Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | config ARM |
| 2 | bool |
| 3 | default y |
Catalin Marinas | 7463449 | 2012-07-30 14:41:09 -0700 | [diff] [blame] | 4 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
Dan Williams | 21266be | 2015-11-19 18:19:29 -0800 | [diff] [blame] | 5 | select ARCH_HAS_DEVMEM_IS_ALLOWED |
Kees Cook | 2b68f6c | 2015-04-14 15:48:00 -0700 | [diff] [blame] | 6 | select ARCH_HAS_ELF_RANDOMIZE |
Mark Rutland | 3d06770 | 2012-10-30 12:13:42 +0000 | [diff] [blame] | 7 | select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 8 | select ARCH_HAVE_CUSTOM_GPIO_H |
Riku Voipio | 957e3fa | 2014-12-12 16:57:44 -0800 | [diff] [blame] | 9 | select ARCH_HAS_GCOV_PROFILE_ALL |
Mark Salter | d701884 | 2013-10-07 22:07:58 -0400 | [diff] [blame] | 10 | select ARCH_MIGHT_HAVE_PC_PARPORT |
Peter Zijlstra | 4badad3 | 2014-06-06 19:53:16 +0200 | [diff] [blame] | 11 | select ARCH_SUPPORTS_ATOMIC_RMW |
Kim Phillips | 017f161 | 2013-11-06 05:15:24 +0100 | [diff] [blame] | 12 | select ARCH_USE_BUILTIN_BSWAP |
Will Deacon | 0cbad9c | 2013-10-09 17:19:22 +0100 | [diff] [blame] | 13 | select ARCH_USE_CMPXCHG_LOCKREF |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 14 | select ARCH_WANT_IPC_PARSE_VERSION |
Stephen Boyd | ee951c6 | 2012-10-29 19:19:34 +0100 | [diff] [blame] | 15 | select BUILDTIME_EXTABLE_SORT if MMU |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 16 | select CLONE_BACKWARDS |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 17 | select CPU_PM if (SUSPEND || CPU_IDLE) |
Will Deacon | dce5c9e | 2013-12-17 19:50:16 +0100 | [diff] [blame] | 18 | select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS |
Borislav Petkov | b01aec9 | 2015-05-21 19:59:31 +0200 | [diff] [blame] | 19 | select EDAC_SUPPORT |
| 20 | select EDAC_ATOMIC_SCRUB |
Laura Abbott | 36d0fd2 | 2014-10-09 15:26:42 -0700 | [diff] [blame] | 21 | select GENERIC_ALLOCATOR |
Uwe Kleine-König | 4477ca4 | 2013-03-21 21:02:37 +0100 | [diff] [blame] | 22 | select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI) |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 23 | select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
Ard Biesheuvel | 2937367 | 2015-09-01 08:59:28 +0200 | [diff] [blame] | 24 | select GENERIC_EARLY_IOREMAP |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 25 | select GENERIC_IDLE_POLL_SETUP |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 26 | select GENERIC_IRQ_PROBE |
| 27 | select GENERIC_IRQ_SHOW |
Geert Uytterhoeven | 7c07005 | 2015-04-01 13:37:11 +0100 | [diff] [blame] | 28 | select GENERIC_IRQ_SHOW_LEVEL |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 29 | select GENERIC_PCI_IOMAP |
Stephen Boyd | 38ff87f | 2013-06-01 23:39:40 -0700 | [diff] [blame] | 30 | select GENERIC_SCHED_CLOCK |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 31 | select GENERIC_SMP_IDLE_THREAD |
| 32 | select GENERIC_STRNCPY_FROM_USER |
| 33 | select GENERIC_STRNLEN_USER |
Marc Zyngier | a71b092 | 2014-08-26 11:03:18 +0100 | [diff] [blame] | 34 | select HANDLE_DOMAIN_IRQ |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 35 | select HARDIRQS_SW_RESEND |
AKASHI Takahiro | 7a01772 | 2014-02-25 18:16:24 +0900 | [diff] [blame] | 36 | select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT) |
Yalin Wang | 0b7857d | 2015-01-16 02:45:55 +0100 | [diff] [blame] | 37 | select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6 |
Arnd Bergmann | 437682ee | 2015-11-19 13:30:42 +0100 | [diff] [blame] | 38 | select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU |
| 39 | select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU |
Daniel Cashman | e0c25d9 | 2016-01-14 15:19:57 -0800 | [diff] [blame] | 40 | select HAVE_ARCH_MMAP_RND_BITS if MMU |
Kees Cook | 9170217 | 2013-11-09 00:51:56 +0100 | [diff] [blame] | 41 | select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT) |
Wade Farnsworth | 0693bf6 | 2012-04-04 16:19:47 +0100 | [diff] [blame] | 42 | select HAVE_ARCH_TRACEHOOK |
Jens Wiklander | b329f95 | 2016-01-04 15:42:55 +0100 | [diff] [blame] | 43 | select HAVE_ARM_SMCCC if CPU_V7 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 44 | select HAVE_BPF_JIT |
Russell King | 51aaf81 | 2014-04-22 22:26:27 +0100 | [diff] [blame] | 45 | select HAVE_CC_STACKPROTECTOR |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 46 | select HAVE_CONTEXT_TRACKING |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 47 | select HAVE_C_RECORDMCOUNT |
| 48 | select HAVE_DEBUG_KMEMLEAK |
| 49 | select HAVE_DMA_API_DEBUG |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 50 | select HAVE_DMA_CONTIGUOUS if MMU |
Arnd Bergmann | 437682ee | 2015-11-19 13:30:42 +0100 | [diff] [blame] | 51 | select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU |
Will Deacon | dce5c9e | 2013-12-17 19:50:16 +0100 | [diff] [blame] | 52 | select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 53 | select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) |
| 54 | select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) |
| 55 | select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) |
| 56 | select HAVE_GENERIC_DMA_COHERENT |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 57 | select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)) |
| 58 | select HAVE_IDE if PCI || ISA || PCMCIA |
Russell King | 87c46b6 | 2013-05-04 14:38:59 +0100 | [diff] [blame] | 59 | select HAVE_IRQ_TIME_ACCOUNTING |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 60 | select HAVE_KERNEL_GZIP |
Kyungsik Lee | f9b493a | 2013-07-08 16:01:48 -0700 | [diff] [blame] | 61 | select HAVE_KERNEL_LZ4 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 62 | select HAVE_KERNEL_LZMA |
| 63 | select HAVE_KERNEL_LZO |
| 64 | select HAVE_KERNEL_XZ |
Arnd Bergmann | cb1293e | 2015-05-26 15:40:44 +0100 | [diff] [blame] | 65 | select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M |
Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 66 | select HAVE_KRETPROBES if (HAVE_KPROBES) |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 67 | select HAVE_MEMBLOCK |
Ard Biesheuvel | 7d485f6 | 2014-11-24 16:54:35 +0100 | [diff] [blame] | 68 | select HAVE_MOD_ARCH_SPECIFIC |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 69 | select HAVE_OPROFILE if (HAVE_PERF_EVENTS) |
Wang Nan | 0dc016d | 2015-01-09 14:37:36 +0800 | [diff] [blame] | 70 | select HAVE_OPTPROBES if !THUMB2_KERNEL |
Jamie Iles | 7ada189 | 2010-02-02 20:24:58 +0100 | [diff] [blame] | 71 | select HAVE_PERF_EVENTS |
Will Deacon | 4986389 | 2013-09-26 12:36:35 +0100 | [diff] [blame] | 72 | select HAVE_PERF_REGS |
| 73 | select HAVE_PERF_USER_STACK_DUMP |
Steve Capper | a0ad549 | 2014-10-09 15:29:18 -0700 | [diff] [blame] | 74 | select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE) |
Will Deacon | e513f8b | 2010-06-25 12:24:53 +0100 | [diff] [blame] | 75 | select HAVE_REGS_AND_STACK_ACCESS_API |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 76 | select HAVE_SYSCALL_TRACEPOINTS |
Catalin Marinas | af1839e | 2012-10-08 16:28:08 -0700 | [diff] [blame] | 77 | select HAVE_UID16 |
Kevin Hilman | 31c1fc8 | 2013-09-16 15:28:22 -0700 | [diff] [blame] | 78 | select HAVE_VIRT_CPU_ACCOUNTING_GEN |
Thomas Gleixner | da0ec6f | 2013-08-14 20:43:17 +0100 | [diff] [blame] | 79 | select IRQ_FORCED_THREADING |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 80 | select MODULES_USE_ELF_REL |
Santosh Shilimkar | 84f452b | 2013-06-30 00:28:46 -0400 | [diff] [blame] | 81 | select NO_BOOTMEM |
Arnd Bergmann | aa7d5f1 | 2015-11-19 13:20:54 +0100 | [diff] [blame] | 82 | select OF_EARLY_FLATTREE if OF |
| 83 | select OF_RESERVED_MEM if OF |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 84 | select OLD_SIGACTION |
| 85 | select OLD_SIGSUSPEND3 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 86 | select PERF_USE_VMALLOC |
| 87 | select RTC_LIB |
| 88 | select SYS_SUPPORTS_APM_EMULATION |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 89 | # Above selects are sorted alphabetically; please add new ones |
| 90 | # according to that. Thanks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | help |
| 92 | The ARM series is a line of low-power-consumption RISC chip designs |
Martin Michlmayr | f6c8965 | 2006-02-08 21:09:07 +0000 | [diff] [blame] | 93 | licensed by ARM Ltd and targeted at embedded applications and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
Martin Michlmayr | f6c8965 | 2006-02-08 21:09:07 +0000 | [diff] [blame] | 95 | manufactured, but legacy ARM-based PC hardware remains popular in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | Europe. There is an ARM Linux project with a web page at |
| 97 | <http://www.arm.linux.org.uk/>. |
| 98 | |
Russell King | 74facff | 2011-06-02 11:16:22 +0100 | [diff] [blame] | 99 | config ARM_HAS_SG_CHAIN |
Laura Abbott | 308c09f | 2014-08-08 14:23:25 -0700 | [diff] [blame] | 100 | select ARCH_HAS_SG_CHAIN |
Russell King | 74facff | 2011-06-02 11:16:22 +0100 | [diff] [blame] | 101 | bool |
| 102 | |
Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 103 | config NEED_SG_DMA_LENGTH |
| 104 | bool |
| 105 | |
| 106 | config ARM_DMA_USE_IOMMU |
Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 107 | bool |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 108 | select ARM_HAS_SG_CHAIN |
| 109 | select NEED_SG_DMA_LENGTH |
Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 110 | |
Seung-Woo Kim | 60460ab | 2013-02-06 13:21:14 +0900 | [diff] [blame] | 111 | if ARM_DMA_USE_IOMMU |
| 112 | |
| 113 | config ARM_DMA_IOMMU_ALIGNMENT |
| 114 | int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers" |
| 115 | range 4 9 |
| 116 | default 8 |
| 117 | help |
| 118 | DMA mapping framework by default aligns all buffers to the smallest |
| 119 | PAGE_SIZE order which is greater than or equal to the requested buffer |
| 120 | size. This works well for buffers up to a few hundreds kilobytes, but |
| 121 | for larger buffers it just a waste of address space. Drivers which has |
| 122 | relatively small addressing window (like 64Mib) might run out of |
| 123 | virtual space with just a few allocations. |
| 124 | |
| 125 | With this parameter you can specify the maximum PAGE_SIZE order for |
| 126 | DMA IOMMU buffers. Larger buffers will be aligned only to this |
| 127 | specified order. The order is expressed as a power of two multiplied |
| 128 | by the PAGE_SIZE. |
| 129 | |
| 130 | endif |
| 131 | |
Hans Ulli Kroll | 0b05da7 | 2010-12-02 12:32:15 +0100 | [diff] [blame] | 132 | config MIGHT_HAVE_PCI |
| 133 | bool |
| 134 | |
Ralf Baechle | 75e7153 | 2007-02-09 17:08:58 +0000 | [diff] [blame] | 135 | config SYS_SUPPORTS_APM_EMULATION |
| 136 | bool |
| 137 | |
Linus Walleij | bc58177 | 2009-09-15 17:30:37 +0100 | [diff] [blame] | 138 | config HAVE_TCM |
| 139 | bool |
| 140 | select GENERIC_ALLOCATOR |
| 141 | |
Russell King | e119bff | 2010-01-10 17:23:29 +0000 | [diff] [blame] | 142 | config HAVE_PROC_CPU |
| 143 | bool |
| 144 | |
Uwe Kleine-König | ce816fa | 2014-04-07 15:39:19 -0700 | [diff] [blame] | 145 | config NO_IOPORT_MAP |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 146 | bool |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | config EISA |
| 149 | bool |
| 150 | ---help--- |
| 151 | The Extended Industry Standard Architecture (EISA) bus was |
| 152 | developed as an open alternative to the IBM MicroChannel bus. |
| 153 | |
| 154 | The EISA bus provided some of the features of the IBM MicroChannel |
| 155 | bus while maintaining backward compatibility with cards made for |
| 156 | the older ISA bus. The EISA bus saw limited use between 1988 and |
| 157 | 1995 when it was made obsolete by the PCI bus. |
| 158 | |
| 159 | Say Y here if you are building a kernel for an EISA-based machine. |
| 160 | |
| 161 | Otherwise, say N. |
| 162 | |
| 163 | config SBUS |
| 164 | bool |
| 165 | |
Russell King | f16fb1e | 2007-04-28 09:59:37 +0100 | [diff] [blame] | 166 | config STACKTRACE_SUPPORT |
| 167 | bool |
| 168 | default y |
| 169 | |
| 170 | config LOCKDEP_SUPPORT |
| 171 | bool |
| 172 | default y |
| 173 | |
Russell King | 7ad1bcb | 2006-08-27 12:07:02 +0100 | [diff] [blame] | 174 | config TRACE_IRQFLAGS_SUPPORT |
| 175 | bool |
Arnd Bergmann | cb1293e | 2015-05-26 15:40:44 +0100 | [diff] [blame] | 176 | default !CPU_V7M |
Russell King | 7ad1bcb | 2006-08-27 12:07:02 +0100 | [diff] [blame] | 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | config RWSEM_XCHGADD_ALGORITHM |
| 179 | bool |
Will Deacon | 8a87411 | 2014-05-02 17:06:19 +0100 | [diff] [blame] | 180 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 182 | config ARCH_HAS_ILOG2_U32 |
| 183 | bool |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 184 | |
| 185 | config ARCH_HAS_ILOG2_U64 |
| 186 | bool |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 187 | |
Eduardo Valentin | 4a1b573 | 2013-06-13 22:58:52 +0100 | [diff] [blame] | 188 | config ARCH_HAS_BANDGAP |
| 189 | bool |
| 190 | |
Stefan Agner | a5f4c56 | 2015-08-13 00:01:52 +0100 | [diff] [blame] | 191 | config FIX_EARLYCON_MEM |
| 192 | def_bool y if MMU |
| 193 | |
Akinobu Mita | b89c3b1 | 2006-03-26 01:39:19 -0800 | [diff] [blame] | 194 | config GENERIC_HWEIGHT |
| 195 | bool |
| 196 | default y |
| 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | config GENERIC_CALIBRATE_DELAY |
| 199 | bool |
| 200 | default y |
| 201 | |
viro@ZenIV.linux.org.uk | a08b6b7 | 2005-09-06 01:48:42 +0100 | [diff] [blame] | 202 | config ARCH_MAY_HAVE_PC_FDC |
| 203 | bool |
| 204 | |
Christoph Lameter | 5ac6da6 | 2007-02-10 01:43:14 -0800 | [diff] [blame] | 205 | config ZONE_DMA |
| 206 | bool |
Christoph Lameter | 5ac6da6 | 2007-02-10 01:43:14 -0800 | [diff] [blame] | 207 | |
FUJITA Tomonori | ccd7ab7 | 2010-03-10 15:23:23 -0800 | [diff] [blame] | 208 | config NEED_DMA_MAP_STATE |
| 209 | def_bool y |
| 210 | |
David A. Long | c7edc9e | 2014-03-07 11:23:04 -0500 | [diff] [blame] | 211 | config ARCH_SUPPORTS_UPROBES |
| 212 | def_bool y |
| 213 | |
Rob Herring | 58af4a2 | 2012-03-20 14:33:01 -0500 | [diff] [blame] | 214 | config ARCH_HAS_DMA_SET_COHERENT_MASK |
| 215 | bool |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | config GENERIC_ISA_DMA |
| 218 | bool |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | config FIQ |
| 221 | bool |
| 222 | |
Rob Herring | 13a5045 | 2012-02-07 09:28:22 -0600 | [diff] [blame] | 223 | config NEED_RET_TO_USER |
| 224 | bool |
| 225 | |
Al Viro | 034d2f5 | 2005-12-19 16:27:59 -0500 | [diff] [blame] | 226 | config ARCH_MTD_XIP |
| 227 | bool |
| 228 | |
Hyok S. Choi | c760fc1 | 2006-03-27 15:18:50 +0100 | [diff] [blame] | 229 | config VECTORS_BASE |
| 230 | hex |
Hyok S. Choi | 6afd6fa | 2006-09-28 21:46:34 +0900 | [diff] [blame] | 231 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
Hyok S. Choi | c760fc1 | 2006-03-27 15:18:50 +0100 | [diff] [blame] | 232 | default DRAM_BASE if REMAP_VECTORS_TO_RAM |
| 233 | default 0x00000000 |
| 234 | help |
Russell King | 19accfd | 2013-07-04 11:40:32 +0100 | [diff] [blame] | 235 | The base address of exception vectors. This must be two pages |
| 236 | in size. |
Hyok S. Choi | c760fc1 | 2006-03-27 15:18:50 +0100 | [diff] [blame] | 237 | |
Russell King | dc21af9 | 2011-01-04 19:09:43 +0000 | [diff] [blame] | 238 | config ARM_PATCH_PHYS_VIRT |
Russell King | c1beced | 2011-08-10 10:23:45 +0100 | [diff] [blame] | 239 | bool "Patch physical to virtual translations at runtime" if EMBEDDED |
| 240 | default y |
Nicolas Pitre | b511d75 | 2011-02-21 06:53:35 +0100 | [diff] [blame] | 241 | depends on !XIP_KERNEL && MMU |
Russell King | dc21af9 | 2011-01-04 19:09:43 +0000 | [diff] [blame] | 242 | help |
Russell King | 111e9a5 | 2011-05-12 10:02:42 +0100 | [diff] [blame] | 243 | Patch phys-to-virt and virt-to-phys translation functions at |
| 244 | boot and module load time according to the position of the |
| 245 | kernel in system memory. |
Russell King | dc21af9 | 2011-01-04 19:09:43 +0000 | [diff] [blame] | 246 | |
Russell King | 111e9a5 | 2011-05-12 10:02:42 +0100 | [diff] [blame] | 247 | This can only be used with non-XIP MMU kernels where the base |
Nicolas Pitre | daece59 | 2011-08-12 00:14:29 +0100 | [diff] [blame] | 248 | of physical memory is at a 16MB boundary. |
Russell King | dc21af9 | 2011-01-04 19:09:43 +0000 | [diff] [blame] | 249 | |
Russell King | c1beced | 2011-08-10 10:23:45 +0100 | [diff] [blame] | 250 | Only disable this option if you know that you do not require |
| 251 | this feature (eg, building a kernel for a single machine) and |
| 252 | you need to shrink the kernel to the minimal size. |
| 253 | |
Rob Herring | c334bc1 | 2012-03-04 22:03:33 -0600 | [diff] [blame] | 254 | config NEED_MACH_IO_H |
| 255 | bool |
| 256 | help |
| 257 | Select this when mach/io.h is required to provide special |
| 258 | definitions for this platform. The need for mach/io.h should |
| 259 | be avoided when possible. |
| 260 | |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 261 | config NEED_MACH_MEMORY_H |
Nicolas Pitre | 1b9f95f | 2011-07-05 22:52:51 -0400 | [diff] [blame] | 262 | bool |
Russell King | 111e9a5 | 2011-05-12 10:02:42 +0100 | [diff] [blame] | 263 | help |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 264 | Select this when mach/memory.h is required to provide special |
| 265 | definitions for this platform. The need for mach/memory.h should |
| 266 | be avoided when possible. |
Nicolas Pitre | 1b9f95f | 2011-07-05 22:52:51 -0400 | [diff] [blame] | 267 | |
| 268 | config PHYS_OFFSET |
Nicolas Pitre | 974c072 | 2011-12-02 23:09:42 +0100 | [diff] [blame] | 269 | hex "Physical address of main memory" if MMU |
Uwe Kleine-König | c6f54a9 | 2014-07-23 20:37:43 +0100 | [diff] [blame] | 270 | depends on !ARM_PATCH_PHYS_VIRT |
Nicolas Pitre | 974c072 | 2011-12-02 23:09:42 +0100 | [diff] [blame] | 271 | default DRAM_BASE if !MMU |
Uwe Kleine-König | c6f54a9 | 2014-07-23 20:37:43 +0100 | [diff] [blame] | 272 | default 0x00000000 if ARCH_EBSA110 || \ |
Uwe Kleine-König | c6f54a9 | 2014-07-23 20:37:43 +0100 | [diff] [blame] | 273 | ARCH_FOOTBRIDGE || \ |
| 274 | ARCH_INTEGRATOR || \ |
| 275 | ARCH_IOP13XX || \ |
| 276 | ARCH_KS8695 || \ |
| 277 | (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET) |
| 278 | default 0x10000000 if ARCH_OMAP1 || ARCH_RPC |
| 279 | default 0x20000000 if ARCH_S5PV210 |
| 280 | default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET |
H Hartley Sweeten | b8824c9 | 2015-06-15 10:35:06 -0700 | [diff] [blame] | 281 | default 0xc0000000 if ARCH_SA1100 |
Nicolas Pitre | 1b9f95f | 2011-07-05 22:52:51 -0400 | [diff] [blame] | 282 | help |
| 283 | Please provide the physical address corresponding to the |
| 284 | location of main memory in your system. |
Russell King | cada3c0 | 2011-01-04 19:39:29 +0000 | [diff] [blame] | 285 | |
Simon Glass | 87e040b | 2011-08-16 23:44:26 +0100 | [diff] [blame] | 286 | config GENERIC_BUG |
| 287 | def_bool y |
| 288 | depends on BUG |
| 289 | |
Kirill A. Shutemov | 1bcad26 | 2015-04-14 15:45:42 -0700 | [diff] [blame] | 290 | config PGTABLE_LEVELS |
| 291 | int |
| 292 | default 3 if ARM_LPAE |
| 293 | default 2 |
| 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | source "init/Kconfig" |
| 296 | |
Matt Helsley | dc52ddc | 2008-10-18 20:27:21 -0700 | [diff] [blame] | 297 | source "kernel/Kconfig.freezer" |
| 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | menu "System Type" |
| 300 | |
Hyok S. Choi | 3c42797 | 2009-07-24 12:35:00 +0100 | [diff] [blame] | 301 | config MMU |
| 302 | bool "MMU-based Paged Memory Management Support" |
| 303 | default y |
| 304 | help |
| 305 | Select if you want MMU-based virtualised addressing space |
| 306 | support by paged memory management. If unsure, say 'Y'. |
| 307 | |
Daniel Cashman | e0c25d9 | 2016-01-14 15:19:57 -0800 | [diff] [blame] | 308 | config ARCH_MMAP_RND_BITS_MIN |
| 309 | default 8 |
| 310 | |
| 311 | config ARCH_MMAP_RND_BITS_MAX |
| 312 | default 14 if PAGE_OFFSET=0x40000000 |
| 313 | default 15 if PAGE_OFFSET=0x80000000 |
| 314 | default 16 |
| 315 | |
Russell King | ccf50e2 | 2010-03-15 19:03:06 +0000 | [diff] [blame] | 316 | # |
| 317 | # The "ARM system type" choice list is ordered alphabetically by option |
| 318 | # text. Please add new entries in the option alphabetic order. |
| 319 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | choice |
| 321 | prompt "ARM system type" |
Arnd Bergmann | 7072280 | 2015-12-17 17:45:47 +0100 | [diff] [blame] | 322 | default ARM_SINGLE_ARMV7M if !MMU |
Arnd Bergmann | 1420b22 | 2013-02-14 13:33:36 +0100 | [diff] [blame] | 323 | default ARCH_MULTIPLATFORM if MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 325 | config ARCH_MULTIPLATFORM |
| 326 | bool "Allow multiple platforms to be selected" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 327 | depends on MMU |
Rob Herring | ddb902c | 2013-11-22 09:29:37 -0600 | [diff] [blame] | 328 | select ARCH_WANT_OPTIONAL_GPIOLIB |
Olof Johansson | 42dc836 | 2014-03-09 12:46:59 -0700 | [diff] [blame] | 329 | select ARM_HAS_SG_CHAIN |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 330 | select ARM_PATCH_PHYS_VIRT |
| 331 | select AUTO_ZRELADDR |
Rob Herring | 6d0add4 | 2014-04-16 08:42:13 -0500 | [diff] [blame] | 332 | select CLKSRC_OF |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 333 | select COMMON_CLK |
Rob Herring | ddb902c | 2013-11-22 09:29:37 -0600 | [diff] [blame] | 334 | select GENERIC_CLOCKEVENTS |
Will Deacon | 08d38be | 2014-05-27 23:26:35 +0100 | [diff] [blame] | 335 | select MIGHT_HAVE_PCI |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 336 | select MULTI_IRQ_HANDLER |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 337 | select SPARSE_IRQ |
| 338 | select USE_OF |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 339 | |
Stefan Agner | 9c77bc4 | 2015-05-20 00:03:51 +0200 | [diff] [blame] | 340 | config ARM_SINGLE_ARMV7M |
| 341 | bool "ARMv7-M based platforms (Cortex-M0/M3/M4)" |
| 342 | depends on !MMU |
| 343 | select ARCH_WANT_OPTIONAL_GPIOLIB |
| 344 | select ARM_NVIC |
Stefan Agner | 499f164 | 2015-05-21 00:35:44 +0200 | [diff] [blame] | 345 | select AUTO_ZRELADDR |
Stefan Agner | 9c77bc4 | 2015-05-20 00:03:51 +0200 | [diff] [blame] | 346 | select CLKSRC_OF |
| 347 | select COMMON_CLK |
| 348 | select CPU_V7M |
| 349 | select GENERIC_CLOCKEVENTS |
| 350 | select NO_IOPORT_MAP |
| 351 | select SPARSE_IRQ |
| 352 | select USE_OF |
| 353 | |
Deepak Saxena | 4af6fee | 2006-06-20 21:30:44 +0100 | [diff] [blame] | 354 | |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 355 | config ARCH_CLPS711X |
| 356 | bool "Cirrus Logic CLPS711x/EP721x/EP731x-based" |
Alexander Shiyan | a3b8d4a | 2012-10-09 20:05:56 +0400 | [diff] [blame] | 357 | select ARCH_REQUIRE_GPIOLIB |
Alexander Shiyan | ea7d1bc | 2012-11-17 17:57:11 +0400 | [diff] [blame] | 358 | select AUTO_ZRELADDR |
Alexander Shiyan | c99f72a | 2013-05-13 21:07:32 +0400 | [diff] [blame] | 359 | select CLKSRC_MMIO |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 360 | select COMMON_CLK |
| 361 | select CPU_ARM720T |
Alexander Shiyan | 4a8355c | 2012-10-10 19:45:27 +0400 | [diff] [blame] | 362 | select GENERIC_CLOCKEVENTS |
Alexander Shiyan | 6597619 | 2013-05-13 21:07:36 +0400 | [diff] [blame] | 363 | select MFD_SYSCON |
Alexander Shiyan | e4e3a37 | 2014-08-19 16:31:15 +0400 | [diff] [blame] | 364 | select SOC_BUS |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 365 | help |
| 366 | Support for Cirrus Logic 711x/721x/731x based boards. |
| 367 | |
Russell King | 788c970 | 2009-04-26 14:21:59 +0100 | [diff] [blame] | 368 | config ARCH_GEMINI |
| 369 | bool "Cortina Systems Gemini" |
Russell King | 788c970 | 2009-04-26 14:21:59 +0100 | [diff] [blame] | 370 | select ARCH_REQUIRE_GPIOLIB |
Linus Walleij | f3372c0 | 2013-10-01 12:57:20 +0200 | [diff] [blame] | 371 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 372 | select CPU_FA526 |
Linus Walleij | f3372c0 | 2013-10-01 12:57:20 +0200 | [diff] [blame] | 373 | select GENERIC_CLOCKEVENTS |
Russell King | 788c970 | 2009-04-26 14:21:59 +0100 | [diff] [blame] | 374 | help |
| 375 | Support for the Cortina Systems Gemini family SoCs |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | config ARCH_EBSA110 |
| 378 | bool "EBSA-110" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 379 | select ARCH_USES_GETTIMEOFFSET |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 380 | select CPU_SA110 |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 381 | select ISA |
Rob Herring | c334bc1 | 2012-03-04 22:03:33 -0600 | [diff] [blame] | 382 | select NEED_MACH_IO_H |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 383 | select NEED_MACH_MEMORY_H |
Uwe Kleine-König | ce816fa | 2014-04-07 15:39:19 -0700 | [diff] [blame] | 384 | select NO_IOPORT_MAP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | help |
| 386 | This is an evaluation board for the StrongARM processor available |
Martin Michlmayr | f6c8965 | 2006-02-08 21:09:07 +0000 | [diff] [blame] | 387 | from Digital. It has limited hardware on-board, including an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
| 389 | parallel port. |
| 390 | |
Lennert Buytenhek | e7736d4 | 2006-03-20 17:10:13 +0000 | [diff] [blame] | 391 | config ARCH_EP93XX |
| 392 | bool "EP93xx-based" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 393 | select ARCH_HAS_HOLES_MEMORYMODEL |
| 394 | select ARCH_REQUIRE_GPIOLIB |
Lennert Buytenhek | e7736d4 | 2006-03-20 17:10:13 +0000 | [diff] [blame] | 395 | select ARM_AMBA |
H Hartley Sweeten | b8824c9 | 2015-06-15 10:35:06 -0700 | [diff] [blame] | 396 | select ARM_PATCH_PHYS_VIRT |
Lennert Buytenhek | e7736d4 | 2006-03-20 17:10:13 +0000 | [diff] [blame] | 397 | select ARM_VIC |
H Hartley Sweeten | b8824c9 | 2015-06-15 10:35:06 -0700 | [diff] [blame] | 398 | select AUTO_ZRELADDR |
Jean-Christop PLAGNIOL-VILLARD | 6d803ba | 2010-11-17 10:04:33 +0100 | [diff] [blame] | 399 | select CLKDEV_LOOKUP |
Linus Walleij | 000bc17 | 2015-06-15 14:34:03 +0200 | [diff] [blame] | 400 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 401 | select CPU_ARM920T |
Linus Walleij | 000bc17 | 2015-06-15 14:34:03 +0200 | [diff] [blame] | 402 | select GENERIC_CLOCKEVENTS |
Lennert Buytenhek | e7736d4 | 2006-03-20 17:10:13 +0000 | [diff] [blame] | 403 | help |
| 404 | This enables support for the Cirrus EP93xx series of CPUs. |
| 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | config ARCH_FOOTBRIDGE |
| 407 | bool "FootBridge" |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 408 | select CPU_SA110 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | select FOOTBRIDGE |
Russell King | 4e8d763 | 2011-01-28 21:00:39 +0000 | [diff] [blame] | 410 | select GENERIC_CLOCKEVENTS |
Arnd Bergmann | d0ee9f4 | 2011-10-01 21:10:32 +0200 | [diff] [blame] | 411 | select HAVE_IDE |
Rob Herring | 8ef6e62 | 2012-03-01 20:48:12 -0600 | [diff] [blame] | 412 | select NEED_MACH_IO_H if !MMU |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 413 | select NEED_MACH_MEMORY_H |
Martin Michlmayr | f999b8b | 2006-02-08 21:09:05 +0000 | [diff] [blame] | 414 | help |
| 415 | Support for systems based on the DC21285 companion chip |
| 416 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Deepak Saxena | 4af6fee | 2006-06-20 21:30:44 +0100 | [diff] [blame] | 418 | config ARCH_NETX |
| 419 | bool "Hilscher NetX based" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 420 | select ARM_VIC |
Russell King | 234b6ced | 2011-05-08 14:09:47 +0100 | [diff] [blame] | 421 | select CLKSRC_MMIO |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 422 | select CPU_ARM926T |
Uwe Kleine-König | 2fcfe6b | 2008-12-09 21:57:24 +0100 | [diff] [blame] | 423 | select GENERIC_CLOCKEVENTS |
Martin Michlmayr | f999b8b | 2006-02-08 21:09:05 +0000 | [diff] [blame] | 424 | help |
Deepak Saxena | 4af6fee | 2006-06-20 21:30:44 +0100 | [diff] [blame] | 425 | This enables support for systems based on the Hilscher NetX Soc |
| 426 | |
Russell King | 3b938be | 2007-05-12 11:25:44 +0100 | [diff] [blame] | 427 | config ARCH_IOP13XX |
| 428 | bool "IOP13xx-based" |
| 429 | depends on MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 430 | select CPU_XSC3 |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 431 | select NEED_MACH_MEMORY_H |
Rob Herring | 13a5045 | 2012-02-07 09:28:22 -0600 | [diff] [blame] | 432 | select NEED_RET_TO_USER |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 433 | select PCI |
| 434 | select PLAT_IOP |
| 435 | select VMSPLIT_1G |
Thomas Gleixner | 37ebbcf | 2014-05-07 15:44:04 +0000 | [diff] [blame] | 436 | select SPARSE_IRQ |
Russell King | 3b938be | 2007-05-12 11:25:44 +0100 | [diff] [blame] | 437 | help |
| 438 | Support for Intel's IOP13XX (XScale) family of processors. |
| 439 | |
Lennert Buytenhek | 3f7e581 | 2006-09-18 23:10:26 +0100 | [diff] [blame] | 440 | config ARCH_IOP32X |
| 441 | bool "IOP32x-based" |
Russell King | a4f7e76 | 2006-06-28 12:52:41 +0100 | [diff] [blame] | 442 | depends on MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 443 | select ARCH_REQUIRE_GPIOLIB |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 444 | select CPU_XSCALE |
Linus Walleij | e9004f5 | 2013-09-09 11:59:51 +0200 | [diff] [blame] | 445 | select GPIO_IOP |
Rob Herring | 13a5045 | 2012-02-07 09:28:22 -0600 | [diff] [blame] | 446 | select NEED_RET_TO_USER |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 447 | select PCI |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 448 | select PLAT_IOP |
Martin Michlmayr | f999b8b | 2006-02-08 21:09:05 +0000 | [diff] [blame] | 449 | help |
Lennert Buytenhek | 3f7e581 | 2006-09-18 23:10:26 +0100 | [diff] [blame] | 450 | Support for Intel's 80219 and IOP32X (XScale) family of |
| 451 | processors. |
| 452 | |
| 453 | config ARCH_IOP33X |
| 454 | bool "IOP33x-based" |
| 455 | depends on MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 456 | select ARCH_REQUIRE_GPIOLIB |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 457 | select CPU_XSCALE |
Linus Walleij | e9004f5 | 2013-09-09 11:59:51 +0200 | [diff] [blame] | 458 | select GPIO_IOP |
Rob Herring | 13a5045 | 2012-02-07 09:28:22 -0600 | [diff] [blame] | 459 | select NEED_RET_TO_USER |
Lennert Buytenhek | 3f7e581 | 2006-09-18 23:10:26 +0100 | [diff] [blame] | 460 | select PCI |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 461 | select PLAT_IOP |
Lennert Buytenhek | 3f7e581 | 2006-09-18 23:10:26 +0100 | [diff] [blame] | 462 | help |
| 463 | Support for Intel's IOP33X (XScale) family of processors. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
Russell King | 3b938be | 2007-05-12 11:25:44 +0100 | [diff] [blame] | 465 | config ARCH_IXP4XX |
| 466 | bool "IXP4xx-based" |
Russell King | a4f7e76 | 2006-06-28 12:52:41 +0100 | [diff] [blame] | 467 | depends on MMU |
Rob Herring | 58af4a2 | 2012-03-20 14:33:01 -0500 | [diff] [blame] | 468 | select ARCH_HAS_DMA_SET_COHERENT_MASK |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 469 | select ARCH_REQUIRE_GPIOLIB |
Russell King | 51aaf81 | 2014-04-22 22:26:27 +0100 | [diff] [blame] | 470 | select ARCH_SUPPORTS_BIG_ENDIAN |
Russell King | 234b6ced | 2011-05-08 14:09:47 +0100 | [diff] [blame] | 471 | select CLKSRC_MMIO |
Russell King | c750815 | 2008-10-26 10:55:14 +0000 | [diff] [blame] | 472 | select CPU_XSCALE |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 473 | select DMABOUNCE if PCI |
Russell King | 3b938be | 2007-05-12 11:25:44 +0100 | [diff] [blame] | 474 | select GENERIC_CLOCKEVENTS |
Hans Ulli Kroll | 0b05da7 | 2010-12-02 12:32:15 +0100 | [diff] [blame] | 475 | select MIGHT_HAVE_PCI |
Rob Herring | c334bc1 | 2012-03-04 22:03:33 -0600 | [diff] [blame] | 476 | select NEED_MACH_IO_H |
Florian Fainelli | 9296d94 | 2013-04-09 14:29:26 +0200 | [diff] [blame] | 477 | select USB_EHCI_BIG_ENDIAN_DESC |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 478 | select USB_EHCI_BIG_ENDIAN_MMIO |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 479 | help |
Russell King | 3b938be | 2007-05-12 11:25:44 +0100 | [diff] [blame] | 480 | Support for Intel's IXP4XX (XScale) family of processors. |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 481 | |
Saeed Bishara | edabd38 | 2009-08-06 15:12:43 +0300 | [diff] [blame] | 482 | config ARCH_DOVE |
| 483 | bool "Marvell Dove" |
Saeed Bishara | edabd38 | 2009-08-06 15:12:43 +0300 | [diff] [blame] | 484 | select ARCH_REQUIRE_GPIOLIB |
Sebastian Hesselbarth | 756b253 | 2013-05-02 19:56:12 +0100 | [diff] [blame] | 485 | select CPU_PJ4 |
Saeed Bishara | edabd38 | 2009-08-06 15:12:43 +0300 | [diff] [blame] | 486 | select GENERIC_CLOCKEVENTS |
Russell King | 0f81bd4 | 2012-09-09 20:34:13 +0100 | [diff] [blame] | 487 | select MIGHT_HAVE_PCI |
Arnd Bergmann | b8cd337 | 2015-12-02 22:27:04 +0100 | [diff] [blame] | 488 | select MULTI_IRQ_HANDLER |
Russell King | 171b3f0 | 2013-09-12 21:24:42 +0100 | [diff] [blame] | 489 | select MVEBU_MBUS |
Sebastian Hesselbarth | 9139acd | 2012-11-19 10:39:55 +0100 | [diff] [blame] | 490 | select PINCTRL |
| 491 | select PINCTRL_DOVE |
Thomas Petazzoni | abcda1d | 2012-09-11 14:27:27 +0200 | [diff] [blame] | 492 | select PLAT_ORION_LEGACY |
Arnd Bergmann | 5cdbe5d | 2015-12-02 22:27:05 +0100 | [diff] [blame] | 493 | select SPARSE_IRQ |
Russell King | c5d431e | 2015-12-08 10:58:09 +0000 | [diff] [blame] | 494 | select PM_GENERIC_DOMAINS if PM |
Saeed Bishara | edabd38 | 2009-08-06 15:12:43 +0300 | [diff] [blame] | 495 | help |
| 496 | Support for the Marvell Dove SoC 88AP510 |
| 497 | |
Andrew Victor | c53c9cf | 2007-05-11 21:01:28 +0100 | [diff] [blame] | 498 | config ARCH_KS8695 |
| 499 | bool "Micrel/Kendin KS8695" |
Hartley Sweeten | 98830bc | 2010-05-17 17:18:10 +0100 | [diff] [blame] | 500 | select ARCH_REQUIRE_GPIOLIB |
Linus Walleij | c7e783d | 2012-08-29 20:27:22 +0200 | [diff] [blame] | 501 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 502 | select CPU_ARM922T |
Linus Walleij | c7e783d | 2012-08-29 20:27:22 +0200 | [diff] [blame] | 503 | select GENERIC_CLOCKEVENTS |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 504 | select NEED_MACH_MEMORY_H |
Andrew Victor | c53c9cf | 2007-05-11 21:01:28 +0100 | [diff] [blame] | 505 | help |
| 506 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based |
| 507 | System-on-Chip devices. |
| 508 | |
Russell King | 788c970 | 2009-04-26 14:21:59 +0100 | [diff] [blame] | 509 | config ARCH_W90X900 |
| 510 | bool "Nuvoton W90X900 CPU" |
wanzongshun | c52d3d6 | 2009-06-10 15:49:32 +0100 | [diff] [blame] | 511 | select ARCH_REQUIRE_GPIOLIB |
Jean-Christop PLAGNIOL-VILLARD | 6d803ba | 2010-11-17 10:04:33 +0100 | [diff] [blame] | 512 | select CLKDEV_LOOKUP |
Russell King | 6fa5d5f | 2011-05-08 15:34:39 +0100 | [diff] [blame] | 513 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 514 | select CPU_ARM926T |
wanzongshun | 58b5369 | 2009-08-14 15:36:44 +0100 | [diff] [blame] | 515 | select GENERIC_CLOCKEVENTS |
Lennert Buytenhek | 777f9be | 2008-06-22 22:45:02 +0200 | [diff] [blame] | 516 | help |
wanzongshun | a8bc4ea | 2009-08-14 15:38:29 +0100 | [diff] [blame] | 517 | Support for Nuvoton (Winbond logic dept.) ARM9 processor, |
| 518 | At present, the w90x900 has been renamed nuc900, regarding |
| 519 | the ARM series product line, you can login the following |
| 520 | link address to know more. |
| 521 | |
| 522 | <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ |
| 523 | ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> |
Tzachi Perelstein | 585cf17 | 2007-10-23 15:14:41 -0400 | [diff] [blame] | 524 | |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 525 | config ARCH_LPC32XX |
| 526 | bool "NXP LPC32XX" |
| 527 | select ARCH_REQUIRE_GPIOLIB |
| 528 | select ARM_AMBA |
Russell King | 4073723 | 2011-01-06 22:32:52 +0000 | [diff] [blame] | 529 | select CLKDEV_LOOKUP |
Russell King | 234b6ced | 2011-05-08 14:09:47 +0100 | [diff] [blame] | 530 | select CLKSRC_MMIO |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 531 | select CPU_ARM926T |
| 532 | select GENERIC_CLOCKEVENTS |
| 533 | select HAVE_IDE |
Russell King | 93e2256 | 2012-10-12 14:20:52 +0100 | [diff] [blame] | 534 | select USE_OF |
| 535 | help |
| 536 | Support for the NXP LPC32XX family of processors |
| 537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | config ARCH_PXA |
eric miao | 2c8086a | 2007-09-11 19:13:17 -0700 | [diff] [blame] | 539 | bool "PXA2xx/PXA3xx-based" |
Russell King | a4f7e76 | 2006-06-28 12:52:41 +0100 | [diff] [blame] | 540 | depends on MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 541 | select ARCH_MTD_XIP |
| 542 | select ARCH_REQUIRE_GPIOLIB |
| 543 | select ARM_CPU_SUSPEND if PM |
| 544 | select AUTO_ZRELADDR |
Robert Jarzmik | a1c0a6a | 2015-02-07 22:54:03 +0100 | [diff] [blame] | 545 | select COMMON_CLK |
Jean-Christop PLAGNIOL-VILLARD | 6d803ba | 2010-11-17 10:04:33 +0100 | [diff] [blame] | 546 | select CLKDEV_LOOKUP |
Daniel Lezcano | 389d9b5 | 2015-10-09 15:48:38 +0200 | [diff] [blame] | 547 | select CLKSRC_PXA |
Russell King | 234b6ced | 2011-05-08 14:09:47 +0100 | [diff] [blame] | 548 | select CLKSRC_MMIO |
Robert Jarzmik | 6f6caea | 2014-07-14 18:52:03 +0200 | [diff] [blame] | 549 | select CLKSRC_OF |
Eric Miao | 981d0f3 | 2007-07-24 01:22:43 +0100 | [diff] [blame] | 550 | select GENERIC_CLOCKEVENTS |
Haojian Zhuang | 157d264 | 2011-10-17 20:37:52 +0800 | [diff] [blame] | 551 | select GPIO_PXA |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 552 | select HAVE_IDE |
Robert Jarzmik | d6cf30c | 2015-02-14 22:41:56 +0100 | [diff] [blame] | 553 | select IRQ_DOMAIN |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 554 | select MULTI_IRQ_HANDLER |
Eric Miao | bd5ce43 | 2009-01-20 12:06:01 +0800 | [diff] [blame] | 555 | select PLAT_PXA |
Haojian Zhuang | 6ac6b81 | 2010-08-20 15:23:59 +0800 | [diff] [blame] | 556 | select SPARSE_IRQ |
Martin Michlmayr | f999b8b | 2006-02-08 21:09:05 +0000 | [diff] [blame] | 557 | help |
eric miao | 2c8086a | 2007-09-11 19:13:17 -0700 | [diff] [blame] | 558 | Support for Intel/Marvell's PXA2xx/PXA3xx processor line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
| 560 | config ARCH_RPC |
| 561 | bool "RiscPC" |
Russell King | 868e87c | 2015-09-28 10:31:50 +0100 | [diff] [blame] | 562 | depends on MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | select ARCH_ACORN |
viro@ZenIV.linux.org.uk | a08b6b7 | 2005-09-06 01:48:42 +0100 | [diff] [blame] | 564 | select ARCH_MAY_HAVE_PC_FDC |
Russell King | 07f841b | 2008-10-01 17:11:06 +0100 | [diff] [blame] | 565 | select ARCH_SPARSEMEM_ENABLE |
John Stultz | 5cfc8ee | 2010-03-24 00:22:36 +0000 | [diff] [blame] | 566 | select ARCH_USES_GETTIMEOFFSET |
Arnd Bergmann | fa04e20 | 2014-02-26 17:39:12 +0100 | [diff] [blame] | 567 | select CPU_SA110 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 568 | select FIQ |
Arnd Bergmann | d0ee9f4 | 2011-10-01 21:10:32 +0200 | [diff] [blame] | 569 | select HAVE_IDE |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 570 | select HAVE_PATA_PLATFORM |
| 571 | select ISA_DMA_API |
Rob Herring | c334bc1 | 2012-03-04 22:03:33 -0600 | [diff] [blame] | 572 | select NEED_MACH_IO_H |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 573 | select NEED_MACH_MEMORY_H |
Uwe Kleine-König | ce816fa | 2014-04-07 15:39:19 -0700 | [diff] [blame] | 574 | select NO_IOPORT_MAP |
Arnd Bergmann | b4811ba | 2013-03-13 17:36:37 +0100 | [diff] [blame] | 575 | select VIRT_TO_BUS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | help |
| 577 | On the Acorn Risc-PC, Linux can support the internal IDE disk and |
| 578 | CD-ROM interface, serial and parallel port, and the floppy drive. |
| 579 | |
| 580 | config ARCH_SA1100 |
| 581 | bool "SA1100-based" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 582 | select ARCH_MTD_XIP |
Michael Buesch | 7444a72 | 2008-07-25 01:46:11 -0700 | [diff] [blame] | 583 | select ARCH_REQUIRE_GPIOLIB |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 584 | select ARCH_SPARSEMEM_ENABLE |
| 585 | select CLKDEV_LOOKUP |
| 586 | select CLKSRC_MMIO |
Daniel Lezcano | 389d9b5 | 2015-10-09 15:48:38 +0200 | [diff] [blame] | 587 | select CLKSRC_PXA |
| 588 | select CLKSRC_OF if OF |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 589 | select CPU_FREQ |
| 590 | select CPU_SA1100 |
| 591 | select GENERIC_CLOCKEVENTS |
Arnd Bergmann | d0ee9f4 | 2011-10-01 21:10:32 +0200 | [diff] [blame] | 592 | select HAVE_IDE |
Dmitry Eremin-Solenikov | 1eca42b | 2014-11-28 15:56:54 +0100 | [diff] [blame] | 593 | select IRQ_DOMAIN |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 594 | select ISA |
Dmitry Eremin-Solenikov | affcab3 | 2014-11-28 15:55:16 +0100 | [diff] [blame] | 595 | select MULTI_IRQ_HANDLER |
Nicolas Pitre | 0cdc8b9 | 2011-09-02 22:26:55 -0400 | [diff] [blame] | 596 | select NEED_MACH_MEMORY_H |
Russell King | 375dec9 | 2012-02-23 14:29:33 +0100 | [diff] [blame] | 597 | select SPARSE_IRQ |
Martin Michlmayr | f999b8b | 2006-02-08 21:09:05 +0000 | [diff] [blame] | 598 | help |
| 599 | Support for StrongARM 11x0 based boards. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Kukjin Kim | b130d5c | 2012-02-03 14:29:23 +0900 | [diff] [blame] | 601 | config ARCH_S3C24XX |
| 602 | bool "Samsung S3C24XX SoCs" |
Kukjin Kim | 5365043 | 2013-04-04 09:04:30 +0900 | [diff] [blame] | 603 | select ARCH_REQUIRE_GPIOLIB |
Arnd Bergmann | 335cce7 | 2014-03-13 14:11:16 +0100 | [diff] [blame] | 604 | select ATAGS |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 605 | select CLKDEV_LOOKUP |
Tomasz Figa | 4280506 | 2013-04-28 02:25:01 +0200 | [diff] [blame] | 606 | select CLKSRC_SAMSUNG_PWM |
Romain Naour | 7f78b6e | 2013-01-09 18:47:04 -0800 | [diff] [blame] | 607 | select GENERIC_CLOCKEVENTS |
Tomasz Figa | 880cf07 | 2013-06-19 01:22:20 +0900 | [diff] [blame] | 608 | select GPIO_SAMSUNG |
Kukjin Kim | 20676c1 | 2010-11-13 16:08:32 +0900 | [diff] [blame] | 609 | select HAVE_S3C2410_I2C if I2C |
Kukjin Kim | b130d5c | 2012-02-03 14:29:23 +0900 | [diff] [blame] | 610 | select HAVE_S3C2410_WATCHDOG if WATCHDOG |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 611 | select HAVE_S3C_RTC if RTC_CLASS |
Heiko Stuebner | 17453dd | 2013-03-07 12:38:25 +0900 | [diff] [blame] | 612 | select MULTI_IRQ_HANDLER |
Rob Herring | c334bc1 | 2012-03-04 22:03:33 -0600 | [diff] [blame] | 613 | select NEED_MACH_IO_H |
Tomasz Figa | cd8dc7a | 2013-06-15 09:01:49 +0900 | [diff] [blame] | 614 | select SAMSUNG_ATAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | help |
Kukjin Kim | b130d5c | 2012-02-03 14:29:23 +0900 | [diff] [blame] | 616 | Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 |
| 617 | and S3C2450 SoCs based systems, such as the Simtec Electronics BAST |
| 618 | (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the |
| 619 | Samsung SMDK2410 development board (and derivatives). |
Ben Dooks | 63b1f51 | 2010-04-30 16:32:26 +0900 | [diff] [blame] | 620 | |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 621 | config ARCH_DAVINCI |
| 622 | bool "TI DaVinci" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 623 | select ARCH_HAS_HOLES_MEMORYMODEL |
David Brownell | dce1115 | 2008-09-07 23:41:04 -0700 | [diff] [blame] | 624 | select ARCH_REQUIRE_GPIOLIB |
Jean-Christop PLAGNIOL-VILLARD | 6d803ba | 2010-11-17 10:04:33 +0100 | [diff] [blame] | 625 | select CLKDEV_LOOKUP |
David Brownell | 20e9969 | 2009-05-07 09:31:42 -0700 | [diff] [blame] | 626 | select GENERIC_ALLOCATOR |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 627 | select GENERIC_CLOCKEVENTS |
Russell King | dc7ad3b | 2011-05-22 10:01:21 +0100 | [diff] [blame] | 628 | select GENERIC_IRQ_CHIP |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 629 | select HAVE_IDE |
Sekhar Nori | 689e331 | 2012-08-28 15:27:52 +0530 | [diff] [blame] | 630 | select USE_OF |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 631 | select ZONE_DMA |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 632 | help |
| 633 | Support for TI's DaVinci platform. |
| 634 | |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 635 | config ARCH_OMAP1 |
| 636 | bool "TI OMAP1" |
Arnd Bergmann | 00a3669 | 2012-06-07 18:50:51 -0600 | [diff] [blame] | 637 | depends on MMU |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 638 | select ARCH_HAS_HOLES_MEMORYMODEL |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 639 | select ARCH_OMAP |
Alexey Charkov | 21f47fb | 2010-12-23 13:11:21 +0100 | [diff] [blame] | 640 | select ARCH_REQUIRE_GPIOLIB |
Tony Prisk | e9a91de | 2012-08-03 21:00:06 +1200 | [diff] [blame] | 641 | select CLKDEV_LOOKUP |
viresh kumar | cee37e5 | 2010-04-01 12:31:05 +0100 | [diff] [blame] | 642 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 643 | select GENERIC_CLOCKEVENTS |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 644 | select GENERIC_IRQ_CHIP |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 645 | select HAVE_IDE |
| 646 | select IRQ_DOMAIN |
Tony Lindgren | b694331 | 2015-05-20 09:01:21 -0700 | [diff] [blame] | 647 | select MULTI_IRQ_HANDLER |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 648 | select NEED_MACH_IO_H if PCCARD |
| 649 | select NEED_MACH_MEMORY_H |
Tony Lindgren | 685e2d0 | 2015-05-20 09:01:21 -0700 | [diff] [blame] | 650 | select SPARSE_IRQ |
Alexey Charkov | 21f47fb | 2010-12-23 13:11:21 +0100 | [diff] [blame] | 651 | help |
Tony Lindgren | a069486 | 2013-01-11 11:24:20 -0800 | [diff] [blame] | 652 | Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) |
Binghua Duan | 02c981c | 2011-07-08 17:40:12 +0800 | [diff] [blame] | 653 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | endchoice |
| 655 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 656 | menu "Multiple platform selection" |
| 657 | depends on ARCH_MULTIPLATFORM |
| 658 | |
| 659 | comment "CPU Core family selection" |
| 660 | |
Arnd Bergmann | f8afae4 | 2014-03-25 22:19:00 +0100 | [diff] [blame] | 661 | config ARCH_MULTI_V4 |
| 662 | bool "ARMv4 based platforms (FA526)" |
| 663 | depends on !ARCH_MULTI_V6_V7 |
| 664 | select ARCH_MULTI_V4_V5 |
| 665 | select CPU_FA526 |
| 666 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 667 | config ARCH_MULTI_V4T |
| 668 | bool "ARMv4T based platforms (ARM720T, ARM920T, ...)" |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 669 | depends on !ARCH_MULTI_V6_V7 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 670 | select ARCH_MULTI_V4_V5 |
Arnd Bergmann | 24e860f | 2013-06-03 15:38:58 +0200 | [diff] [blame] | 671 | select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \ |
| 672 | CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \ |
| 673 | CPU_ARM925T || CPU_ARM940T) |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 674 | |
| 675 | config ARCH_MULTI_V5 |
| 676 | bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)" |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 677 | depends on !ARCH_MULTI_V6_V7 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 678 | select ARCH_MULTI_V4_V5 |
Andrew Lunn | 12567bb | 2014-02-22 20:14:54 +0100 | [diff] [blame] | 679 | select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \ |
Arnd Bergmann | 24e860f | 2013-06-03 15:38:58 +0200 | [diff] [blame] | 680 | CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \ |
| 681 | CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON) |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 682 | |
| 683 | config ARCH_MULTI_V4_V5 |
| 684 | bool |
| 685 | |
| 686 | config ARCH_MULTI_V6 |
Stephen Boyd | 8dda05c | 2013-03-04 15:19:19 -0800 | [diff] [blame] | 687 | bool "ARMv6 based platforms (ARM11)" |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 688 | select ARCH_MULTI_V6_V7 |
Rob Herring | 42f4754 | 2014-01-31 14:26:04 -0600 | [diff] [blame] | 689 | select CPU_V6K |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 690 | |
| 691 | config ARCH_MULTI_V7 |
Stephen Boyd | 8dda05c | 2013-03-04 15:19:19 -0800 | [diff] [blame] | 692 | bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)" |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 693 | default y |
| 694 | select ARCH_MULTI_V6_V7 |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 695 | select CPU_V7 |
Rob Herring | 90bc8ac | 2014-01-31 15:32:02 -0600 | [diff] [blame] | 696 | select HAVE_SMP |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 697 | |
| 698 | config ARCH_MULTI_V6_V7 |
| 699 | bool |
Rob Herring | 9352b05 | 2014-01-31 15:36:10 -0600 | [diff] [blame] | 700 | select MIGHT_HAVE_CACHE_L2X0 |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 701 | |
| 702 | config ARCH_MULTI_CPU_AUTO |
| 703 | def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7) |
| 704 | select ARCH_MULTI_V5 |
| 705 | |
| 706 | endmenu |
| 707 | |
Rob Herring | 05e2a3d | 2013-12-05 10:04:54 -0600 | [diff] [blame] | 708 | config ARCH_VIRT |
Masahiro Yamada | e324654 | 2015-11-16 12:06:10 +0900 | [diff] [blame] | 709 | bool "Dummy Virtual Machine" |
| 710 | depends on ARCH_MULTI_V7 |
Rob Herring | 4b8b5f2 | 2013-12-05 10:10:34 -0600 | [diff] [blame] | 711 | select ARM_AMBA |
Rob Herring | 05e2a3d | 2013-12-05 10:04:54 -0600 | [diff] [blame] | 712 | select ARM_GIC |
Pavel Fedin | 0e2f91e | 2015-11-27 12:56:26 +0100 | [diff] [blame] | 713 | select ARM_GIC_V2M if PCI_MSI |
Jean-Philippe Brucker | 0b28f1d | 2015-10-01 13:47:18 +0100 | [diff] [blame] | 714 | select ARM_GIC_V3 |
Rob Herring | 05e2a3d | 2013-12-05 10:04:54 -0600 | [diff] [blame] | 715 | select ARM_PSCI |
Rob Herring | 4b8b5f2 | 2013-12-05 10:10:34 -0600 | [diff] [blame] | 716 | select HAVE_ARM_ARCH_TIMER |
Rob Herring | 05e2a3d | 2013-12-05 10:04:54 -0600 | [diff] [blame] | 717 | |
Russell King | ccf50e2 | 2010-03-15 19:03:06 +0000 | [diff] [blame] | 718 | # |
| 719 | # This is sorted alphabetically by mach-* pathname. However, plat-* |
| 720 | # Kconfigs may be included either alphabetically (according to the |
| 721 | # plat- suffix) or along side the corresponding mach-* source. |
| 722 | # |
Gregory CLEMENT | 3e93a22 | 2012-06-04 18:38:56 +0200 | [diff] [blame] | 723 | source "arch/arm/mach-mvebu/Kconfig" |
| 724 | |
Tsahee Zidenberg | 445d9b3 | 2015-03-12 13:53:00 +0200 | [diff] [blame] | 725 | source "arch/arm/mach-alpine/Kconfig" |
| 726 | |
Oleksij Rempel | d9bfc86 | 2014-11-24 12:08:27 +0100 | [diff] [blame] | 727 | source "arch/arm/mach-asm9260/Kconfig" |
| 728 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 729 | source "arch/arm/mach-at91/Kconfig" |
| 730 | |
Anders Berg | 1d22924e | 2014-05-23 11:08:35 +0200 | [diff] [blame] | 731 | source "arch/arm/mach-axxia/Kconfig" |
| 732 | |
Christian Daudt | 8ac49e0 | 2012-11-19 09:46:10 -0800 | [diff] [blame] | 733 | source "arch/arm/mach-bcm/Kconfig" |
| 734 | |
Sebastian Hesselbarth | 1c37fa1 | 2013-09-09 14:36:19 +0200 | [diff] [blame] | 735 | source "arch/arm/mach-berlin/Kconfig" |
| 736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | source "arch/arm/mach-clps711x/Kconfig" |
| 738 | |
Anton Vorontsov | d94f944 | 2010-03-25 17:12:41 +0300 | [diff] [blame] | 739 | source "arch/arm/mach-cns3xxx/Kconfig" |
| 740 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 741 | source "arch/arm/mach-davinci/Kconfig" |
| 742 | |
Baruch Siach | df8d742 | 2015-01-14 10:40:30 +0200 | [diff] [blame] | 743 | source "arch/arm/mach-digicolor/Kconfig" |
| 744 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 745 | source "arch/arm/mach-dove/Kconfig" |
| 746 | |
Lennert Buytenhek | e7736d4 | 2006-03-20 17:10:13 +0000 | [diff] [blame] | 747 | source "arch/arm/mach-ep93xx/Kconfig" |
| 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | source "arch/arm/mach-footbridge/Kconfig" |
| 750 | |
Paulius Zaleckas | 59d3a19 | 2009-03-26 10:06:08 +0200 | [diff] [blame] | 751 | source "arch/arm/mach-gemini/Kconfig" |
| 752 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 753 | source "arch/arm/mach-highbank/Kconfig" |
| 754 | |
Haojian Zhuang | 389ee0c | 2013-12-20 10:52:56 +0800 | [diff] [blame] | 755 | source "arch/arm/mach-hisi/Kconfig" |
| 756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | source "arch/arm/mach-integrator/Kconfig" |
| 758 | |
Lennert Buytenhek | 3f7e581 | 2006-09-18 23:10:26 +0100 | [diff] [blame] | 759 | source "arch/arm/mach-iop32x/Kconfig" |
| 760 | |
| 761 | source "arch/arm/mach-iop33x/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
Dan Williams | 285f5fa | 2006-12-07 02:59:39 +0100 | [diff] [blame] | 763 | source "arch/arm/mach-iop13xx/Kconfig" |
| 764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | source "arch/arm/mach-ixp4xx/Kconfig" |
| 766 | |
Santosh Shilimkar | 828989a | 2013-06-10 11:27:13 -0400 | [diff] [blame] | 767 | source "arch/arm/mach-keystone/Kconfig" |
| 768 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 769 | source "arch/arm/mach-ks8695/Kconfig" |
| 770 | |
Carlo Caione | 3b8f503 | 2014-09-10 22:16:59 +0200 | [diff] [blame] | 771 | source "arch/arm/mach-meson/Kconfig" |
| 772 | |
Jonas Jensen | 17723fd3 | 2013-12-18 13:58:45 +0100 | [diff] [blame] | 773 | source "arch/arm/mach-moxart/Kconfig" |
| 774 | |
Stanislav Samsonov | 794d15b | 2008-06-22 22:45:10 +0200 | [diff] [blame] | 775 | source "arch/arm/mach-mv78xx0/Kconfig" |
| 776 | |
Shawn Guo | 3995eb8 | 2012-09-13 19:48:07 +0800 | [diff] [blame] | 777 | source "arch/arm/mach-imx/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
Matthias Brugger | f682a21 | 2014-05-13 01:06:13 +0200 | [diff] [blame] | 779 | source "arch/arm/mach-mediatek/Kconfig" |
| 780 | |
Shawn Guo | 1d3f33d | 2010-12-13 20:55:03 +0800 | [diff] [blame] | 781 | source "arch/arm/mach-mxs/Kconfig" |
| 782 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 783 | source "arch/arm/mach-netx/Kconfig" |
Eric Miao | 49cbe78 | 2009-01-20 14:15:18 +0800 | [diff] [blame] | 784 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 785 | source "arch/arm/mach-nomadik/Kconfig" |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 786 | |
Daniel Tang | 9851ca5 | 2013-06-11 18:40:17 +1000 | [diff] [blame] | 787 | source "arch/arm/mach-nspire/Kconfig" |
| 788 | |
Tony Lindgren | d48af15 | 2005-07-10 19:58:17 +0100 | [diff] [blame] | 789 | source "arch/arm/plat-omap/Kconfig" |
| 790 | |
| 791 | source "arch/arm/mach-omap1/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 793 | source "arch/arm/mach-omap2/Kconfig" |
| 794 | |
Lennert Buytenhek | 9dd0b19 | 2008-03-27 14:51:41 -0400 | [diff] [blame] | 795 | source "arch/arm/mach-orion5x/Kconfig" |
Tzachi Perelstein | 585cf17 | 2007-10-23 15:14:41 -0400 | [diff] [blame] | 796 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 797 | source "arch/arm/mach-picoxcell/Kconfig" |
| 798 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 799 | source "arch/arm/mach-pxa/Kconfig" |
| 800 | source "arch/arm/plat-pxa/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 802 | source "arch/arm/mach-mmp/Kconfig" |
| 803 | |
Kumar Gala | 8fc1b0f | 2014-01-21 17:14:10 -0600 | [diff] [blame] | 804 | source "arch/arm/mach-qcom/Kconfig" |
| 805 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 806 | source "arch/arm/mach-realview/Kconfig" |
| 807 | |
Heiko Stuebner | d63dc05 | 2013-06-02 23:09:41 +0200 | [diff] [blame] | 808 | source "arch/arm/mach-rockchip/Kconfig" |
| 809 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 810 | source "arch/arm/mach-sa1100/Kconfig" |
Saeed Bishara | edabd38 | 2009-08-06 15:12:43 +0300 | [diff] [blame] | 811 | |
Rob Herring | 387798b | 2012-09-06 13:41:12 -0500 | [diff] [blame] | 812 | source "arch/arm/mach-socfpga/Kconfig" |
| 813 | |
Arnd Bergmann | a7ed099 | 2012-12-02 15:12:47 +0100 | [diff] [blame] | 814 | source "arch/arm/mach-spear/Kconfig" |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 815 | |
Srinivas Kandagatla | 65ebcc1 | 2013-06-25 12:15:10 +0100 | [diff] [blame] | 816 | source "arch/arm/mach-sti/Kconfig" |
| 817 | |
Kukjin Kim | 85fd6d6 | 2012-02-06 09:38:19 +0900 | [diff] [blame] | 818 | source "arch/arm/mach-s3c24xx/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
Ben Dooks | 431107e | 2010-01-26 10:11:04 +0900 | [diff] [blame] | 820 | source "arch/arm/mach-s3c64xx/Kconfig" |
Ben Dooks | a08ab63 | 2008-10-21 14:06:39 +0100 | [diff] [blame] | 821 | |
Kukjin Kim | 170f4e4 | 2010-02-24 16:40:44 +0900 | [diff] [blame] | 822 | source "arch/arm/mach-s5pv210/Kconfig" |
| 823 | |
Kukjin Kim | 8301457 | 2011-11-06 13:54:56 +0900 | [diff] [blame] | 824 | source "arch/arm/mach-exynos/Kconfig" |
Rob Herring | e509b28 | 2014-06-10 09:06:09 -0500 | [diff] [blame] | 825 | source "arch/arm/plat-samsung/Kconfig" |
Changhwan Youn | cc0e72b | 2010-07-16 12:15:38 +0900 | [diff] [blame] | 826 | |
Russell King | 882d01f | 2010-03-02 23:40:15 +0000 | [diff] [blame] | 827 | source "arch/arm/mach-shmobile/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
Maxime Ripard | 3b52634 | 2012-11-08 12:40:16 +0100 | [diff] [blame] | 829 | source "arch/arm/mach-sunxi/Kconfig" |
| 830 | |
Barry Song | 156a099 | 2012-08-23 13:41:58 +0800 | [diff] [blame] | 831 | source "arch/arm/mach-prima2/Kconfig" |
| 832 | |
Marc Gonzalez | d6de5b0 | 2015-12-15 10:41:13 +0100 | [diff] [blame] | 833 | source "arch/arm/mach-tango/Kconfig" |
| 834 | |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 835 | source "arch/arm/mach-tegra/Kconfig" |
| 836 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 837 | source "arch/arm/mach-u300/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Masahiro Yamada | ba56a98 | 2015-05-08 13:07:11 +0900 | [diff] [blame] | 839 | source "arch/arm/mach-uniphier/Kconfig" |
| 840 | |
Russell King | 95b8f20 | 2010-01-14 11:43:54 +0000 | [diff] [blame] | 841 | source "arch/arm/mach-ux500/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
| 843 | source "arch/arm/mach-versatile/Kconfig" |
| 844 | |
Russell King | ceade89 | 2010-02-11 21:44:53 +0000 | [diff] [blame] | 845 | source "arch/arm/mach-vexpress/Kconfig" |
Russell King | 420c34e | 2011-01-18 20:08:06 +0000 | [diff] [blame] | 846 | source "arch/arm/plat-versatile/Kconfig" |
Russell King | ceade89 | 2010-02-11 21:44:53 +0000 | [diff] [blame] | 847 | |
Tony Prisk | 6f35f9a | 2012-10-11 20:13:09 +1300 | [diff] [blame] | 848 | source "arch/arm/mach-vt8500/Kconfig" |
| 849 | |
wanzongshun | 7ec80dd | 2008-12-03 03:55:38 +0100 | [diff] [blame] | 850 | source "arch/arm/mach-w90x900/Kconfig" |
| 851 | |
Jun Nie | acede51 | 2015-04-28 17:18:05 +0800 | [diff] [blame] | 852 | source "arch/arm/mach-zx/Kconfig" |
| 853 | |
Josh Cartwright | 9a45eb6 | 2012-11-19 11:38:29 -0600 | [diff] [blame] | 854 | source "arch/arm/mach-zynq/Kconfig" |
| 855 | |
Stefan Agner | 499f164 | 2015-05-21 00:35:44 +0200 | [diff] [blame] | 856 | # ARMv7-M architecture |
| 857 | config ARCH_EFM32 |
| 858 | bool "Energy Micro efm32" |
| 859 | depends on ARM_SINGLE_ARMV7M |
| 860 | select ARCH_REQUIRE_GPIOLIB |
| 861 | help |
| 862 | Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko |
| 863 | processors. |
| 864 | |
| 865 | config ARCH_LPC18XX |
| 866 | bool "NXP LPC18xx/LPC43xx" |
| 867 | depends on ARM_SINGLE_ARMV7M |
| 868 | select ARCH_HAS_RESET_CONTROLLER |
| 869 | select ARM_AMBA |
| 870 | select CLKSRC_LPC32XX |
| 871 | select PINCTRL |
| 872 | help |
| 873 | Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4 |
| 874 | high performance microcontrollers. |
| 875 | |
| 876 | config ARCH_STM32 |
| 877 | bool "STMicrolectronics STM32" |
| 878 | depends on ARM_SINGLE_ARMV7M |
| 879 | select ARCH_HAS_RESET_CONTROLLER |
| 880 | select ARMV7M_SYSTICK |
Maxime Coquelin | 2526318 | 2015-05-22 23:50:52 +0200 | [diff] [blame] | 881 | select CLKSRC_STM32 |
Stefan Agner | 499f164 | 2015-05-21 00:35:44 +0200 | [diff] [blame] | 882 | select RESET_CONTROLLER |
| 883 | help |
| 884 | Support for STMicroelectronics STM32 processors. |
| 885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | # Definitions to make life easier |
| 887 | config ARCH_ACORN |
| 888 | bool |
| 889 | |
Lennert Buytenhek | 7ae1f7e | 2006-09-18 23:12:53 +0100 | [diff] [blame] | 890 | config PLAT_IOP |
| 891 | bool |
Mikael Pettersson | 469d3044 | 2009-10-29 11:46:54 -0700 | [diff] [blame] | 892 | select GENERIC_CLOCKEVENTS |
Lennert Buytenhek | 7ae1f7e | 2006-09-18 23:12:53 +0100 | [diff] [blame] | 893 | |
Lennert Buytenhek | 69b02f6 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 894 | config PLAT_ORION |
| 895 | bool |
Russell King | bfe45e0 | 2011-05-08 15:33:30 +0100 | [diff] [blame] | 896 | select CLKSRC_MMIO |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 897 | select COMMON_CLK |
Russell King | dc7ad3b | 2011-05-22 10:01:21 +0100 | [diff] [blame] | 898 | select GENERIC_IRQ_CHIP |
Andrew Lunn | 278b45b | 2012-06-27 13:40:04 +0200 | [diff] [blame] | 899 | select IRQ_DOMAIN |
Lennert Buytenhek | 69b02f6 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 900 | |
Thomas Petazzoni | abcda1d | 2012-09-11 14:27:27 +0200 | [diff] [blame] | 901 | config PLAT_ORION_LEGACY |
| 902 | bool |
| 903 | select PLAT_ORION |
| 904 | |
Eric Miao | bd5ce43 | 2009-01-20 12:06:01 +0800 | [diff] [blame] | 905 | config PLAT_PXA |
| 906 | bool |
| 907 | |
Russell King | f4b8b31 | 2010-01-14 12:48:06 +0000 | [diff] [blame] | 908 | config PLAT_VERSATILE |
| 909 | bool |
| 910 | |
Alexandre Courbot | d9a1bea | 2013-11-24 15:30:46 +0900 | [diff] [blame] | 911 | source "arch/arm/firmware/Kconfig" |
| 912 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | source arch/arm/mm/Kconfig |
| 914 | |
Lennert Buytenhek | afe4b25 | 2006-12-03 18:51:14 +0100 | [diff] [blame] | 915 | config IWMMXT |
Sebastian Hesselbarth | d93003e | 2014-04-24 22:58:30 +0100 | [diff] [blame] | 916 | bool "Enable iWMMXt support" |
| 917 | depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B |
| 918 | default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B |
Lennert Buytenhek | afe4b25 | 2006-12-03 18:51:14 +0100 | [diff] [blame] | 919 | help |
| 920 | Enable support for iWMMXt context switching at run time if |
| 921 | running on a CPU that supports it. |
| 922 | |
eric miao | 5210864 | 2010-12-13 09:42:34 +0100 | [diff] [blame] | 923 | config MULTI_IRQ_HANDLER |
| 924 | bool |
| 925 | help |
| 926 | Allow each machine to specify it's own IRQ handler at run time. |
| 927 | |
Hyok S. Choi | 3b93e7b | 2006-06-22 11:48:56 +0100 | [diff] [blame] | 928 | if !MMU |
| 929 | source "arch/arm/Kconfig-nommu" |
| 930 | endif |
| 931 | |
Gregory CLEMENT | 3e0a07f | 2013-06-23 10:17:11 +0100 | [diff] [blame] | 932 | config PJ4B_ERRATA_4742 |
| 933 | bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation" |
| 934 | depends on CPU_PJ4B && MACH_ARMADA_370 |
| 935 | default y |
| 936 | help |
| 937 | When coming out of either a Wait for Interrupt (WFI) or a Wait for |
| 938 | Event (WFE) IDLE states, a specific timing sensitivity exists between |
| 939 | the retiring WFI/WFE instructions and the newly issued subsequent |
| 940 | instructions. This sensitivity can result in a CPU hang scenario. |
| 941 | Workaround: |
| 942 | The software must insert either a Data Synchronization Barrier (DSB) |
| 943 | or Data Memory Barrier (DMB) command immediately after the WFI/WFE |
| 944 | instruction |
| 945 | |
Will Deacon | f0c4b8d | 2012-04-20 17:20:08 +0100 | [diff] [blame] | 946 | config ARM_ERRATA_326103 |
| 947 | bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" |
| 948 | depends on CPU_V6 |
| 949 | help |
| 950 | Executing a SWP instruction to read-only memory does not set bit 11 |
| 951 | of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to |
| 952 | treat the access as a read, preventing a COW from occurring and |
| 953 | causing the faulting task to livelock. |
| 954 | |
Catalin Marinas | 9cba3cc | 2009-04-30 17:06:03 +0100 | [diff] [blame] | 955 | config ARM_ERRATA_411920 |
| 956 | bool "ARM errata: Invalidation of the Instruction Cache operation can fail" |
Russell King | e399b1a | 2011-01-17 15:08:32 +0000 | [diff] [blame] | 957 | depends on CPU_V6 || CPU_V6K |
Catalin Marinas | 9cba3cc | 2009-04-30 17:06:03 +0100 | [diff] [blame] | 958 | help |
| 959 | Invalidation of the Instruction Cache operation can |
| 960 | fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. |
| 961 | It does not affect the MPCore. This option enables the ARM Ltd. |
| 962 | recommended workaround. |
| 963 | |
Catalin Marinas | 7ce236f | 2009-04-30 17:06:09 +0100 | [diff] [blame] | 964 | config ARM_ERRATA_430973 |
| 965 | bool "ARM errata: Stale prediction on replaced interworking branch" |
| 966 | depends on CPU_V7 |
| 967 | help |
| 968 | This option enables the workaround for the 430973 Cortex-A8 |
Russell King | 79403cd | 2015-04-13 16:14:37 +0100 | [diff] [blame] | 969 | r1p* erratum. If a code sequence containing an ARM/Thumb |
Catalin Marinas | 7ce236f | 2009-04-30 17:06:09 +0100 | [diff] [blame] | 970 | interworking branch is replaced with another code sequence at the |
| 971 | same virtual address, whether due to self-modifying code or virtual |
| 972 | to physical address re-mapping, Cortex-A8 does not recover from the |
| 973 | stale interworking branch prediction. This results in Cortex-A8 |
| 974 | executing the new code sequence in the incorrect ARM or Thumb state. |
| 975 | The workaround enables the BTB/BTAC operations by setting ACTLR.IBE |
| 976 | and also flushes the branch target cache at every context switch. |
| 977 | Note that setting specific bits in the ACTLR register may not be |
| 978 | available in non-secure mode. |
| 979 | |
Catalin Marinas | 855c551 | 2009-04-30 17:06:15 +0100 | [diff] [blame] | 980 | config ARM_ERRATA_458693 |
| 981 | bool "ARM errata: Processor deadlock when a false hazard is created" |
| 982 | depends on CPU_V7 |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 983 | depends on !ARCH_MULTIPLATFORM |
Catalin Marinas | 855c551 | 2009-04-30 17:06:15 +0100 | [diff] [blame] | 984 | help |
| 985 | This option enables the workaround for the 458693 Cortex-A8 (r2p0) |
| 986 | erratum. For very specific sequences of memory operations, it is |
| 987 | possible for a hazard condition intended for a cache line to instead |
| 988 | be incorrectly associated with a different cache line. This false |
| 989 | hazard might then cause a processor deadlock. The workaround enables |
| 990 | the L1 caching of the NEON accesses and disables the PLD instruction |
| 991 | in the ACTLR register. Note that setting specific bits in the ACTLR |
| 992 | register may not be available in non-secure mode. |
| 993 | |
Catalin Marinas | 0516e46 | 2009-04-30 17:06:20 +0100 | [diff] [blame] | 994 | config ARM_ERRATA_460075 |
| 995 | bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" |
| 996 | depends on CPU_V7 |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 997 | depends on !ARCH_MULTIPLATFORM |
Catalin Marinas | 0516e46 | 2009-04-30 17:06:20 +0100 | [diff] [blame] | 998 | help |
| 999 | This option enables the workaround for the 460075 Cortex-A8 (r2p0) |
| 1000 | erratum. Any asynchronous access to the L2 cache may encounter a |
| 1001 | situation in which recent store transactions to the L2 cache are lost |
| 1002 | and overwritten with stale memory contents from external memory. The |
| 1003 | workaround disables the write-allocate mode for the L2 cache via the |
| 1004 | ACTLR register. Note that setting specific bits in the ACTLR register |
| 1005 | may not be available in non-secure mode. |
| 1006 | |
Will Deacon | 9f05027 | 2010-09-14 09:51:43 +0100 | [diff] [blame] | 1007 | config ARM_ERRATA_742230 |
| 1008 | bool "ARM errata: DMB operation may be faulty" |
| 1009 | depends on CPU_V7 && SMP |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 1010 | depends on !ARCH_MULTIPLATFORM |
Will Deacon | 9f05027 | 2010-09-14 09:51:43 +0100 | [diff] [blame] | 1011 | help |
| 1012 | This option enables the workaround for the 742230 Cortex-A9 |
| 1013 | (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction |
| 1014 | between two write operations may not ensure the correct visibility |
| 1015 | ordering of the two writes. This workaround sets a specific bit in |
| 1016 | the diagnostic register of the Cortex-A9 which causes the DMB |
| 1017 | instruction to behave as a DSB, ensuring the correct behaviour of |
| 1018 | the two writes. |
| 1019 | |
Will Deacon | a672e99 | 2010-09-14 09:53:02 +0100 | [diff] [blame] | 1020 | config ARM_ERRATA_742231 |
| 1021 | bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" |
| 1022 | depends on CPU_V7 && SMP |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 1023 | depends on !ARCH_MULTIPLATFORM |
Will Deacon | a672e99 | 2010-09-14 09:53:02 +0100 | [diff] [blame] | 1024 | help |
| 1025 | This option enables the workaround for the 742231 Cortex-A9 |
| 1026 | (r2p0..r2p2) erratum. Under certain conditions, specific to the |
| 1027 | Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, |
| 1028 | accessing some data located in the same cache line, may get corrupted |
| 1029 | data due to bad handling of the address hazard when the line gets |
| 1030 | replaced from one of the CPUs at the same time as another CPU is |
| 1031 | accessing it. This workaround sets specific bits in the diagnostic |
| 1032 | register of the Cortex-A9 which reduces the linefill issuing |
| 1033 | capabilities of the processor. |
| 1034 | |
Jon Medhurst | 6915579 | 2013-06-07 10:35:35 +0100 | [diff] [blame] | 1035 | config ARM_ERRATA_643719 |
| 1036 | bool "ARM errata: LoUIS bit field in CLIDR register is incorrect" |
| 1037 | depends on CPU_V7 && SMP |
Russell King | e5a5de4 | 2015-04-02 23:58:55 +0100 | [diff] [blame] | 1038 | default y |
Jon Medhurst | 6915579 | 2013-06-07 10:35:35 +0100 | [diff] [blame] | 1039 | help |
| 1040 | This option enables the workaround for the 643719 Cortex-A9 (prior to |
| 1041 | r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR |
| 1042 | register returns zero when it should return one. The workaround |
| 1043 | corrects this value, ensuring cache maintenance operations which use |
| 1044 | it behave as intended and avoiding data corruption. |
| 1045 | |
Will Deacon | cdf357f | 2010-08-05 11:20:51 +0100 | [diff] [blame] | 1046 | config ARM_ERRATA_720789 |
| 1047 | bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" |
Dave Martin | e66dc74 | 2011-12-08 13:37:46 +0100 | [diff] [blame] | 1048 | depends on CPU_V7 |
Will Deacon | cdf357f | 2010-08-05 11:20:51 +0100 | [diff] [blame] | 1049 | help |
| 1050 | This option enables the workaround for the 720789 Cortex-A9 (prior to |
| 1051 | r2p0) erratum. A faulty ASID can be sent to the other CPUs for the |
| 1052 | broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. |
| 1053 | As a consequence of this erratum, some TLB entries which should be |
| 1054 | invalidated are not, resulting in an incoherency in the system page |
| 1055 | tables. The workaround changes the TLB flushing routines to invalidate |
| 1056 | entries regardless of the ASID. |
Will Deacon | 475d92f | 2010-09-28 14:02:02 +0100 | [diff] [blame] | 1057 | |
| 1058 | config ARM_ERRATA_743622 |
| 1059 | bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" |
| 1060 | depends on CPU_V7 |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 1061 | depends on !ARCH_MULTIPLATFORM |
Will Deacon | 475d92f | 2010-09-28 14:02:02 +0100 | [diff] [blame] | 1062 | help |
| 1063 | This option enables the workaround for the 743622 Cortex-A9 |
Will Deacon | efbc74a | 2012-02-24 12:12:38 +0100 | [diff] [blame] | 1064 | (r2p*) erratum. Under very rare conditions, a faulty |
Will Deacon | 475d92f | 2010-09-28 14:02:02 +0100 | [diff] [blame] | 1065 | optimisation in the Cortex-A9 Store Buffer may lead to data |
| 1066 | corruption. This workaround sets a specific bit in the diagnostic |
| 1067 | register of the Cortex-A9 which disables the Store Buffer |
| 1068 | optimisation, preventing the defect from occurring. This has no |
| 1069 | visible impact on the overall performance or power consumption of the |
| 1070 | processor. |
| 1071 | |
Will Deacon | 9a27c27 | 2011-02-18 16:36:35 +0100 | [diff] [blame] | 1072 | config ARM_ERRATA_751472 |
| 1073 | bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" |
Dave Martin | ba90c51 | 2011-12-08 13:41:06 +0100 | [diff] [blame] | 1074 | depends on CPU_V7 |
Rob Herring | 62e4d35 | 2012-12-21 22:42:40 +0100 | [diff] [blame] | 1075 | depends on !ARCH_MULTIPLATFORM |
Will Deacon | 9a27c27 | 2011-02-18 16:36:35 +0100 | [diff] [blame] | 1076 | help |
| 1077 | This option enables the workaround for the 751472 Cortex-A9 (prior |
| 1078 | to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the |
| 1079 | completion of a following broadcasted operation if the second |
| 1080 | operation is received by a CPU before the ICIALLUIS has completed, |
| 1081 | potentially leading to corrupted entries in the cache or TLB. |
| 1082 | |
Will Deacon | fcbdc5fe | 2011-02-28 18:15:16 +0100 | [diff] [blame] | 1083 | config ARM_ERRATA_754322 |
| 1084 | bool "ARM errata: possible faulty MMU translations following an ASID switch" |
| 1085 | depends on CPU_V7 |
| 1086 | help |
| 1087 | This option enables the workaround for the 754322 Cortex-A9 (r2p*, |
| 1088 | r3p*) erratum. A speculative memory access may cause a page table walk |
| 1089 | which starts prior to an ASID switch but completes afterwards. This |
| 1090 | can populate the micro-TLB with a stale entry which may be hit with |
| 1091 | the new ASID. This workaround places two dsb instructions in the mm |
| 1092 | switching code so that no page table walks can cross the ASID switch. |
| 1093 | |
Will Deacon | 5dab26a | 2011-03-04 12:38:54 +0100 | [diff] [blame] | 1094 | config ARM_ERRATA_754327 |
| 1095 | bool "ARM errata: no automatic Store Buffer drain" |
| 1096 | depends on CPU_V7 && SMP |
| 1097 | help |
| 1098 | This option enables the workaround for the 754327 Cortex-A9 (prior to |
| 1099 | r2p0) erratum. The Store Buffer does not have any automatic draining |
| 1100 | mechanism and therefore a livelock may occur if an external agent |
| 1101 | continuously polls a memory location waiting to observe an update. |
| 1102 | This workaround defines cpu_relax() as smp_mb(), preventing correctly |
| 1103 | written polling loops from denying visibility of updates to memory. |
| 1104 | |
Catalin Marinas | 145e10e | 2011-08-15 11:04:41 +0100 | [diff] [blame] | 1105 | config ARM_ERRATA_364296 |
| 1106 | bool "ARM errata: Possible cache data corruption with hit-under-miss enabled" |
Fabio Estevam | fd83247 | 2013-07-09 18:34:01 +0100 | [diff] [blame] | 1107 | depends on CPU_V6 |
Catalin Marinas | 145e10e | 2011-08-15 11:04:41 +0100 | [diff] [blame] | 1108 | help |
| 1109 | This options enables the workaround for the 364296 ARM1136 |
| 1110 | r0p2 erratum (possible cache data corruption with |
| 1111 | hit-under-miss enabled). It sets the undocumented bit 31 in |
| 1112 | the auxiliary control register and the FI bit in the control |
| 1113 | register, thus disabling hit-under-miss without putting the |
| 1114 | processor into full low interrupt latency mode. ARM11MPCore |
| 1115 | is not affected. |
| 1116 | |
Will Deacon | f630c1b | 2011-09-15 11:45:15 +0100 | [diff] [blame] | 1117 | config ARM_ERRATA_764369 |
| 1118 | bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" |
| 1119 | depends on CPU_V7 && SMP |
| 1120 | help |
| 1121 | This option enables the workaround for erratum 764369 |
| 1122 | affecting Cortex-A9 MPCore with two or more processors (all |
| 1123 | current revisions). Under certain timing circumstances, a data |
| 1124 | cache line maintenance operation by MVA targeting an Inner |
| 1125 | Shareable memory region may fail to proceed up to either the |
| 1126 | Point of Coherency or to the Point of Unification of the |
| 1127 | system. This workaround adds a DSB instruction before the |
| 1128 | relevant cache maintenance functions and sets a specific bit |
| 1129 | in the diagnostic control register of the SCU. |
| 1130 | |
Simon Horman | 7253b85 | 2012-09-28 02:12:45 +0100 | [diff] [blame] | 1131 | config ARM_ERRATA_775420 |
| 1132 | bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock" |
| 1133 | depends on CPU_V7 |
| 1134 | help |
| 1135 | This option enables the workaround for the 775420 Cortex-A9 (r2p2, |
| 1136 | r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance |
| 1137 | operation aborts with MMU exception, it might cause the processor |
| 1138 | to deadlock. This workaround puts DSB before executing ISB if |
| 1139 | an abort may occur on cache maintenance. |
| 1140 | |
Catalin Marinas | 93dc688 | 2013-03-26 23:35:04 +0100 | [diff] [blame] | 1141 | config ARM_ERRATA_798181 |
| 1142 | bool "ARM errata: TLBI/DSB failure on Cortex-A15" |
| 1143 | depends on CPU_V7 && SMP |
| 1144 | help |
| 1145 | On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not |
| 1146 | adequately shooting down all use of the old entries. This |
| 1147 | option enables the Linux kernel workaround for this erratum |
| 1148 | which sends an IPI to the CPUs that are running the same ASID |
| 1149 | as the one being invalidated. |
| 1150 | |
Will Deacon | 84b6504 | 2013-08-20 17:29:55 +0100 | [diff] [blame] | 1151 | config ARM_ERRATA_773022 |
| 1152 | bool "ARM errata: incorrect instructions may be executed from loop buffer" |
| 1153 | depends on CPU_V7 |
| 1154 | help |
| 1155 | This option enables the workaround for the 773022 Cortex-A15 |
| 1156 | (up to r0p4) erratum. In certain rare sequences of code, the |
| 1157 | loop buffer may deliver incorrect instructions. This |
| 1158 | workaround disables the loop buffer to avoid the erratum. |
| 1159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | endmenu |
| 1161 | |
| 1162 | source "arch/arm/common/Kconfig" |
| 1163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | menu "Bus support" |
| 1165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | config ISA |
| 1167 | bool |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | help |
| 1169 | Find out whether you have ISA slots on your motherboard. ISA is the |
| 1170 | name of a bus system, i.e. the way the CPU talks to the other stuff |
| 1171 | inside your box. Other bus systems are PCI, EISA, MicroChannel |
| 1172 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; |
| 1173 | newer boards don't support it. If you have ISA, say Y, otherwise N. |
| 1174 | |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 1175 | # Select ISA DMA controller support |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | config ISA_DMA |
| 1177 | bool |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 1178 | select ISA_DMA_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 1180 | # Select ISA DMA interface |
Al Viro | 5cae841 | 2005-05-04 05:39:22 +0100 | [diff] [blame] | 1181 | config ISA_DMA_API |
| 1182 | bool |
Al Viro | 5cae841 | 2005-05-04 05:39:22 +0100 | [diff] [blame] | 1183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | config PCI |
Hans Ulli Kroll | 0b05da7 | 2010-12-02 12:32:15 +0100 | [diff] [blame] | 1185 | bool "PCI support" if MIGHT_HAVE_PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | help |
| 1187 | Find out whether you have a PCI motherboard. PCI is the name of a |
| 1188 | bus system, i.e. the way the CPU talks to the other stuff inside |
| 1189 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or |
| 1190 | VESA. If you have PCI, say Y, otherwise N. |
| 1191 | |
Anton Vorontsov | 5288217 | 2010-04-19 13:20:49 +0100 | [diff] [blame] | 1192 | config PCI_DOMAINS |
| 1193 | bool |
| 1194 | depends on PCI |
| 1195 | |
Lorenzo Pieralisi | 8c7d1474 | 2014-11-21 11:29:26 +0000 | [diff] [blame] | 1196 | config PCI_DOMAINS_GENERIC |
| 1197 | def_bool PCI_DOMAINS |
| 1198 | |
Marcelo Roberto Jimenez | b080ac8 | 2010-12-16 21:34:51 +0100 | [diff] [blame] | 1199 | config PCI_NANOENGINE |
| 1200 | bool "BSE nanoEngine PCI support" |
| 1201 | depends on SA1100_NANOENGINE |
| 1202 | help |
| 1203 | Enable PCI on the BSE nanoEngine board. |
| 1204 | |
Matthew Wilcox | 36e2359 | 2007-07-10 10:54:40 -0600 | [diff] [blame] | 1205 | config PCI_SYSCALL |
| 1206 | def_bool PCI |
| 1207 | |
Mike Rapoport | a0113a9 | 2007-11-25 08:55:34 +0100 | [diff] [blame] | 1208 | config PCI_HOST_ITE8152 |
| 1209 | bool |
| 1210 | depends on PCI && MACH_ARMCORE |
| 1211 | default y |
| 1212 | select DMABOUNCE |
| 1213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | source "drivers/pci/Kconfig" |
Jingoo Han | 3f06d15 | 2013-06-21 16:25:29 +0900 | [diff] [blame] | 1215 | source "drivers/pci/pcie/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | |
| 1217 | source "drivers/pcmcia/Kconfig" |
| 1218 | |
| 1219 | endmenu |
| 1220 | |
| 1221 | menu "Kernel Features" |
| 1222 | |
Dave Martin | 3b55658 | 2011-12-07 15:38:04 +0000 | [diff] [blame] | 1223 | config HAVE_SMP |
| 1224 | bool |
| 1225 | help |
| 1226 | This option should be selected by machines which have an SMP- |
| 1227 | capable CPU. |
| 1228 | |
| 1229 | The only effect of this option is to make the SMP-related |
| 1230 | options available to the user for configuration. |
| 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | config SMP |
Russell King | bb2d813 | 2011-05-12 09:52:02 +0100 | [diff] [blame] | 1233 | bool "Symmetric Multi-Processing" |
Russell King | fbb4dda | 2011-01-17 18:01:58 +0000 | [diff] [blame] | 1234 | depends on CPU_V6K || CPU_V7 |
Russell King | bc28248 | 2009-05-17 18:58:34 +0100 | [diff] [blame] | 1235 | depends on GENERIC_CLOCKEVENTS |
Dave Martin | 3b55658 | 2011-12-07 15:38:04 +0000 | [diff] [blame] | 1236 | depends on HAVE_SMP |
Jonathan Austin | 801bb21 | 2013-02-22 18:56:04 +0000 | [diff] [blame] | 1237 | depends on MMU || ARM_MPU |
Arnd Bergmann | 0361748 | 2015-05-26 15:36:58 +0100 | [diff] [blame] | 1238 | select IRQ_WORK |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | help |
| 1240 | This enables support for systems with more than one CPU. If you have |
Robert Graffham | 4a47415 | 2014-01-23 15:55:29 -0800 | [diff] [blame] | 1241 | a system with only one CPU, say N. If you have a system with more |
| 1242 | than one CPU, say Y. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
Robert Graffham | 4a47415 | 2014-01-23 15:55:29 -0800 | [diff] [blame] | 1244 | If you say N here, the kernel will run on uni- and multiprocessor |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | machines, but will use only one CPU of a multiprocessor machine. If |
Robert Graffham | 4a47415 | 2014-01-23 15:55:29 -0800 | [diff] [blame] | 1246 | you say Y here, the kernel will run on many, but not all, |
| 1247 | uniprocessor machines. On a uniprocessor machine, the kernel |
| 1248 | will run faster if you say N here. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | |
Paul Bolle | 395cf96 | 2011-08-15 02:02:26 +0200 | [diff] [blame] | 1250 | See also <file:Documentation/x86/i386/IO-APIC.txt>, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
Justin P. Mattock | 50a23e6 | 2010-10-16 10:36:23 -0700 | [diff] [blame] | 1252 | <http://tldp.org/HOWTO/SMP-HOWTO.html>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | |
| 1254 | If you don't know what to do here, say N. |
| 1255 | |
Russell King | f00ec48 | 2010-09-04 10:47:48 +0100 | [diff] [blame] | 1256 | config SMP_ON_UP |
Russell King | 5744ff4 | 2015-02-13 11:04:21 +0000 | [diff] [blame] | 1257 | bool "Allow booting SMP kernel on uniprocessor systems" |
Jonathan Austin | 801bb21 | 2013-02-22 18:56:04 +0000 | [diff] [blame] | 1258 | depends on SMP && !XIP_KERNEL && MMU |
Russell King | f00ec48 | 2010-09-04 10:47:48 +0100 | [diff] [blame] | 1259 | default y |
| 1260 | help |
| 1261 | SMP kernels contain instructions which fail on non-SMP processors. |
| 1262 | Enabling this option allows the kernel to modify itself to make |
| 1263 | these instructions safe. Disabling it allows about 1K of space |
| 1264 | savings. |
| 1265 | |
| 1266 | If you don't know what to do here, say Y. |
| 1267 | |
Vincent Guittot | c9018aa | 2011-08-08 13:21:59 +0100 | [diff] [blame] | 1268 | config ARM_CPU_TOPOLOGY |
| 1269 | bool "Support cpu topology definition" |
| 1270 | depends on SMP && CPU_V7 |
| 1271 | default y |
| 1272 | help |
| 1273 | Support ARM cpu topology definition. The MPIDR register defines |
| 1274 | affinity between processors which is then used to describe the cpu |
| 1275 | topology of an ARM System. |
| 1276 | |
| 1277 | config SCHED_MC |
| 1278 | bool "Multi-core scheduler support" |
| 1279 | depends on ARM_CPU_TOPOLOGY |
| 1280 | help |
| 1281 | Multi-core scheduler support improves the CPU scheduler's decision |
| 1282 | making when dealing with multi-core CPU chips at a cost of slightly |
| 1283 | increased overhead in some places. If unsure say N here. |
| 1284 | |
| 1285 | config SCHED_SMT |
| 1286 | bool "SMT scheduler support" |
| 1287 | depends on ARM_CPU_TOPOLOGY |
| 1288 | help |
| 1289 | Improves the CPU scheduler's decision making when dealing with |
| 1290 | MultiThreading at a cost of slightly increased overhead in some |
| 1291 | places. If unsure say N here. |
| 1292 | |
Russell King | a8cbcd9 | 2009-05-16 11:51:14 +0100 | [diff] [blame] | 1293 | config HAVE_ARM_SCU |
| 1294 | bool |
Russell King | a8cbcd9 | 2009-05-16 11:51:14 +0100 | [diff] [blame] | 1295 | help |
| 1296 | This option enables support for the ARM system coherency unit |
| 1297 | |
Mark Rutland | 8a4da6e | 2012-11-12 14:33:44 +0000 | [diff] [blame] | 1298 | config HAVE_ARM_ARCH_TIMER |
Marc Zyngier | 022c03a | 2012-01-11 17:25:17 +0000 | [diff] [blame] | 1299 | bool "Architected timer support" |
| 1300 | depends on CPU_V7 |
Mark Rutland | 8a4da6e | 2012-11-12 14:33:44 +0000 | [diff] [blame] | 1301 | select ARM_ARCH_TIMER |
Will Deacon | 0c403462 | 2013-11-19 15:46:17 +0100 | [diff] [blame] | 1302 | select GENERIC_CLOCKEVENTS |
Marc Zyngier | 022c03a | 2012-01-11 17:25:17 +0000 | [diff] [blame] | 1303 | help |
| 1304 | This option enables support for the ARM architected timer |
| 1305 | |
Russell King | f32f4ce | 2009-05-16 12:14:21 +0100 | [diff] [blame] | 1306 | config HAVE_ARM_TWD |
| 1307 | bool |
Rob Herring | da4a686 | 2013-02-06 21:17:47 -0600 | [diff] [blame] | 1308 | select CLKSRC_OF if OF |
Russell King | f32f4ce | 2009-05-16 12:14:21 +0100 | [diff] [blame] | 1309 | help |
| 1310 | This options enables support for the ARM timer and watchdog unit |
| 1311 | |
Nicolas Pitre | e8db288 | 2012-04-12 02:45:22 -0400 | [diff] [blame] | 1312 | config MCPM |
| 1313 | bool "Multi-Cluster Power Management" |
| 1314 | depends on CPU_V7 && SMP |
| 1315 | help |
| 1316 | This option provides the common power management infrastructure |
| 1317 | for (multi-)cluster based systems, such as big.LITTLE based |
| 1318 | systems. |
| 1319 | |
Haojian Zhuang | ebf4a5c | 2014-04-15 14:52:00 +0800 | [diff] [blame] | 1320 | config MCPM_QUAD_CLUSTER |
| 1321 | bool |
| 1322 | depends on MCPM |
| 1323 | help |
| 1324 | To avoid wasting resources unnecessarily, MCPM only supports up |
| 1325 | to 2 clusters by default. |
| 1326 | Platforms with 3 or 4 clusters that use MCPM must select this |
| 1327 | option to allow the additional clusters to be managed. |
| 1328 | |
Nicolas Pitre | 1c33be5 | 2012-04-12 02:56:10 -0400 | [diff] [blame] | 1329 | config BIG_LITTLE |
| 1330 | bool "big.LITTLE support (Experimental)" |
| 1331 | depends on CPU_V7 && SMP |
| 1332 | select MCPM |
| 1333 | help |
| 1334 | This option enables support selections for the big.LITTLE |
| 1335 | system architecture. |
| 1336 | |
| 1337 | config BL_SWITCHER |
| 1338 | bool "big.LITTLE switcher support" |
Arnd Bergmann | 6c044fe | 2015-11-19 15:49:23 +0100 | [diff] [blame] | 1339 | depends on BIG_LITTLE && MCPM && HOTPLUG_CPU && ARM_GIC |
Nicolas Pitre | 1c33be5 | 2012-04-12 02:56:10 -0400 | [diff] [blame] | 1340 | select ARM_CPU_SUSPEND |
Russell King | 51aaf81 | 2014-04-22 22:26:27 +0100 | [diff] [blame] | 1341 | select CPU_PM |
Nicolas Pitre | 1c33be5 | 2012-04-12 02:56:10 -0400 | [diff] [blame] | 1342 | help |
| 1343 | The big.LITTLE "switcher" provides the core functionality to |
| 1344 | transparently handle transition between a cluster of A15's |
| 1345 | and a cluster of A7's in a big.LITTLE system. |
| 1346 | |
Nicolas Pitre | b22537c | 2012-04-12 03:04:28 -0400 | [diff] [blame] | 1347 | config BL_SWITCHER_DUMMY_IF |
| 1348 | tristate "Simple big.LITTLE switcher user interface" |
| 1349 | depends on BL_SWITCHER && DEBUG_KERNEL |
| 1350 | help |
| 1351 | This is a simple and dummy char dev interface to control |
| 1352 | the big.LITTLE switcher core code. It is meant for |
| 1353 | debugging purposes only. |
| 1354 | |
Lennert Buytenhek | 8d5796d | 2008-08-25 21:03:32 +0100 | [diff] [blame] | 1355 | choice |
| 1356 | prompt "Memory split" |
Russell King | 006fa25 | 2014-02-26 19:40:46 +0000 | [diff] [blame] | 1357 | depends on MMU |
Lennert Buytenhek | 8d5796d | 2008-08-25 21:03:32 +0100 | [diff] [blame] | 1358 | default VMSPLIT_3G |
| 1359 | help |
| 1360 | Select the desired split between kernel and user memory. |
| 1361 | |
| 1362 | If you are not absolutely sure what you are doing, leave this |
| 1363 | option alone! |
| 1364 | |
| 1365 | config VMSPLIT_3G |
| 1366 | bool "3G/1G user/kernel split" |
Nicolas Pitre | 63ce446 | 2015-09-13 03:30:11 +0100 | [diff] [blame] | 1367 | config VMSPLIT_3G_OPT |
| 1368 | bool "3G/1G user/kernel split (for full 1G low memory)" |
Lennert Buytenhek | 8d5796d | 2008-08-25 21:03:32 +0100 | [diff] [blame] | 1369 | config VMSPLIT_2G |
| 1370 | bool "2G/2G user/kernel split" |
| 1371 | config VMSPLIT_1G |
| 1372 | bool "1G/3G user/kernel split" |
| 1373 | endchoice |
| 1374 | |
| 1375 | config PAGE_OFFSET |
| 1376 | hex |
Russell King | 006fa25 | 2014-02-26 19:40:46 +0000 | [diff] [blame] | 1377 | default PHYS_OFFSET if !MMU |
Lennert Buytenhek | 8d5796d | 2008-08-25 21:03:32 +0100 | [diff] [blame] | 1378 | default 0x40000000 if VMSPLIT_1G |
| 1379 | default 0x80000000 if VMSPLIT_2G |
Nicolas Pitre | 63ce446 | 2015-09-13 03:30:11 +0100 | [diff] [blame] | 1380 | default 0xB0000000 if VMSPLIT_3G_OPT |
Lennert Buytenhek | 8d5796d | 2008-08-25 21:03:32 +0100 | [diff] [blame] | 1381 | default 0xC0000000 |
| 1382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | config NR_CPUS |
| 1384 | int "Maximum number of CPUs (2-32)" |
| 1385 | range 2 32 |
| 1386 | depends on SMP |
| 1387 | default "4" |
| 1388 | |
Russell King | a054a81 | 2005-11-02 22:24:33 +0000 | [diff] [blame] | 1389 | config HOTPLUG_CPU |
Russell King | 00b7ded | 2012-10-22 22:54:30 +0100 | [diff] [blame] | 1390 | bool "Support for hot-pluggable CPUs" |
Stephen Rothwell | 40b3136 | 2013-05-21 13:49:35 +1000 | [diff] [blame] | 1391 | depends on SMP |
Russell King | a054a81 | 2005-11-02 22:24:33 +0000 | [diff] [blame] | 1392 | help |
| 1393 | Say Y here to experiment with turning CPUs off and on. CPUs |
| 1394 | can be controlled through /sys/devices/system/cpu. |
| 1395 | |
Will Deacon | 2bdd424 | 2012-12-12 19:20:52 +0000 | [diff] [blame] | 1396 | config ARM_PSCI |
| 1397 | bool "Support for the ARM Power State Coordination Interface (PSCI)" |
Jens Wiklander | e679660 | 2016-01-04 15:46:47 +0100 | [diff] [blame] | 1398 | depends on HAVE_ARM_SMCCC |
Mark Rutland | be12039 | 2015-07-31 15:46:19 +0100 | [diff] [blame] | 1399 | select ARM_PSCI_FW |
Will Deacon | 2bdd424 | 2012-12-12 19:20:52 +0000 | [diff] [blame] | 1400 | help |
| 1401 | Say Y here if you want Linux to communicate with system firmware |
| 1402 | implementing the PSCI specification for CPU-centric power |
| 1403 | management operations described in ARM document number ARM DEN |
| 1404 | 0022A ("Power State Coordination Interface System Software on |
| 1405 | ARM processors"). |
| 1406 | |
Maxime Ripard | 2a6ad87 | 2013-02-03 12:24:48 +0100 | [diff] [blame] | 1407 | # The GPIO number here must be sorted by descending number. In case of |
| 1408 | # a multiplatform kernel, we just want the highest value required by the |
| 1409 | # selected platforms. |
Peter De Schrijver (NVIDIA) | 44986ab | 2011-12-21 10:48:45 +0100 | [diff] [blame] | 1410 | config ARCH_NR_GPIO |
| 1411 | int |
Gregory Fong | b35d2e5 | 2015-05-28 19:14:10 -0700 | [diff] [blame] | 1412 | default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \ |
| 1413 | ARCH_ZYNQ |
Tomasz Figa | aa42587 | 2014-07-03 13:17:12 +0200 | [diff] [blame] | 1414 | default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \ |
| 1415 | SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 |
Boris BREZILLON | eb171a9 | 2014-04-10 15:52:46 +0200 | [diff] [blame] | 1416 | default 416 if ARCH_SUNXI |
Olof Johansson | 06b851e | 2013-04-02 18:33:58 -0700 | [diff] [blame] | 1417 | default 392 if ARCH_U8500 |
Tony Prisk | 01bb914 | 2013-03-09 18:22:30 +1300 | [diff] [blame] | 1418 | default 352 if ARCH_VT8500 |
Heiko Stuebner | 7b5da4c | 2014-05-26 00:13:51 +0200 | [diff] [blame] | 1419 | default 288 if ARCH_ROCKCHIP |
Maxime Ripard | 2a6ad87 | 2013-02-03 12:24:48 +0100 | [diff] [blame] | 1420 | default 264 if MACH_H4700 |
Peter De Schrijver (NVIDIA) | 44986ab | 2011-12-21 10:48:45 +0100 | [diff] [blame] | 1421 | default 0 |
| 1422 | help |
| 1423 | Maximum number of GPIOs in the system. |
| 1424 | |
| 1425 | If unsure, leave the default value. |
| 1426 | |
Uwe Kleine-König | d45a398 | 2009-08-13 20:38:17 +0200 | [diff] [blame] | 1427 | source kernel/Kconfig.preempt |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | |
Russell King | c9218b1 | 2013-04-27 23:31:10 +0100 | [diff] [blame] | 1429 | config HZ_FIXED |
Russell King | f806581 | 2006-03-02 22:41:59 +0000 | [diff] [blame] | 1430 | int |
Kukjin Kim | 070b8b4 | 2014-07-02 07:50:15 +0900 | [diff] [blame] | 1431 | default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \ |
Kukjin Kim | a73ddc6 | 2011-05-11 16:27:51 +0900 | [diff] [blame] | 1432 | ARCH_S5PV210 || ARCH_EXYNOS4 |
Alexandre Belloni | 1164f67 | 2015-03-13 22:57:24 +0100 | [diff] [blame] | 1433 | default 128 if SOC_AT91RM9200 |
Russell King | 47d8468 | 2013-09-10 23:47:55 +0100 | [diff] [blame] | 1434 | default 0 |
Russell King | c9218b1 | 2013-04-27 23:31:10 +0100 | [diff] [blame] | 1435 | |
| 1436 | choice |
Russell King | 47d8468 | 2013-09-10 23:47:55 +0100 | [diff] [blame] | 1437 | depends on HZ_FIXED = 0 |
Russell King | c9218b1 | 2013-04-27 23:31:10 +0100 | [diff] [blame] | 1438 | prompt "Timer frequency" |
| 1439 | |
| 1440 | config HZ_100 |
| 1441 | bool "100 Hz" |
| 1442 | |
| 1443 | config HZ_200 |
| 1444 | bool "200 Hz" |
| 1445 | |
| 1446 | config HZ_250 |
| 1447 | bool "250 Hz" |
| 1448 | |
| 1449 | config HZ_300 |
| 1450 | bool "300 Hz" |
| 1451 | |
| 1452 | config HZ_500 |
| 1453 | bool "500 Hz" |
| 1454 | |
| 1455 | config HZ_1000 |
| 1456 | bool "1000 Hz" |
| 1457 | |
| 1458 | endchoice |
| 1459 | |
| 1460 | config HZ |
| 1461 | int |
Russell King | 47d8468 | 2013-09-10 23:47:55 +0100 | [diff] [blame] | 1462 | default HZ_FIXED if HZ_FIXED != 0 |
Russell King | c9218b1 | 2013-04-27 23:31:10 +0100 | [diff] [blame] | 1463 | default 100 if HZ_100 |
| 1464 | default 200 if HZ_200 |
| 1465 | default 250 if HZ_250 |
| 1466 | default 300 if HZ_300 |
| 1467 | default 500 if HZ_500 |
| 1468 | default 1000 |
| 1469 | |
| 1470 | config SCHED_HRTICK |
| 1471 | def_bool HIGH_RES_TIMERS |
Russell King | f806581 | 2006-03-02 22:41:59 +0000 | [diff] [blame] | 1472 | |
Catalin Marinas | 16c7965 | 2009-07-24 12:33:02 +0100 | [diff] [blame] | 1473 | config THUMB2_KERNEL |
Uwe Kleine-König | bc7dea0 | 2011-12-09 20:52:10 +0100 | [diff] [blame] | 1474 | bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY |
Uwe Kleine-König | 4477ca4 | 2013-03-21 21:02:37 +0100 | [diff] [blame] | 1475 | depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K |
Uwe Kleine-König | bc7dea0 | 2011-12-09 20:52:10 +0100 | [diff] [blame] | 1476 | default y if CPU_THUMBONLY |
Catalin Marinas | 16c7965 | 2009-07-24 12:33:02 +0100 | [diff] [blame] | 1477 | select AEABI |
| 1478 | select ARM_ASM_UNIFIED |
Arnd Bergmann | 89bace6 | 2011-06-10 14:12:21 +0000 | [diff] [blame] | 1479 | select ARM_UNWIND |
Catalin Marinas | 16c7965 | 2009-07-24 12:33:02 +0100 | [diff] [blame] | 1480 | help |
| 1481 | By enabling this option, the kernel will be compiled in |
| 1482 | Thumb-2 mode. A compiler/assembler that understand the unified |
| 1483 | ARM-Thumb syntax is needed. |
| 1484 | |
| 1485 | If unsure, say N. |
| 1486 | |
Dave Martin | 6f685c5 | 2011-03-03 11:41:12 +0100 | [diff] [blame] | 1487 | config THUMB2_AVOID_R_ARM_THM_JUMP11 |
| 1488 | bool "Work around buggy Thumb-2 short branch relocations in gas" |
| 1489 | depends on THUMB2_KERNEL && MODULES |
| 1490 | default y |
| 1491 | help |
| 1492 | Various binutils versions can resolve Thumb-2 branches to |
| 1493 | locally-defined, preemptible global symbols as short-range "b.n" |
| 1494 | branch instructions. |
| 1495 | |
| 1496 | This is a problem, because there's no guarantee the final |
| 1497 | destination of the symbol, or any candidate locations for a |
| 1498 | trampoline, are within range of the branch. For this reason, the |
| 1499 | kernel does not support fixing up the R_ARM_THM_JUMP11 (102) |
| 1500 | relocation in modules at all, and it makes little sense to add |
| 1501 | support. |
| 1502 | |
| 1503 | The symptom is that the kernel fails with an "unsupported |
| 1504 | relocation" error when loading some modules. |
| 1505 | |
| 1506 | Until fixed tools are available, passing |
| 1507 | -fno-optimize-sibling-calls to gcc should prevent gcc generating |
| 1508 | code which hits this problem, at the cost of a bit of extra runtime |
| 1509 | stack usage in some cases. |
| 1510 | |
| 1511 | The problem is described in more detail at: |
| 1512 | https://bugs.launchpad.net/binutils-linaro/+bug/725126 |
| 1513 | |
| 1514 | Only Thumb-2 kernels are affected. |
| 1515 | |
| 1516 | Unless you are sure your tools don't have this problem, say Y. |
| 1517 | |
Catalin Marinas | 0becb08 | 2009-07-24 12:32:53 +0100 | [diff] [blame] | 1518 | config ARM_ASM_UNIFIED |
| 1519 | bool |
| 1520 | |
Nicolas Pitre | 42f25bd | 2015-12-12 02:49:21 +0100 | [diff] [blame] | 1521 | config ARM_PATCH_IDIV |
| 1522 | bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()" |
| 1523 | depends on CPU_32v7 && !XIP_KERNEL |
| 1524 | default y |
| 1525 | help |
| 1526 | The ARM compiler inserts calls to __aeabi_idiv() and |
| 1527 | __aeabi_uidiv() when it needs to perform division on signed |
| 1528 | and unsigned integers. Some v7 CPUs have support for the sdiv |
| 1529 | and udiv instructions that can be used to implement those |
| 1530 | functions. |
| 1531 | |
| 1532 | Enabling this option allows the kernel to modify itself to |
| 1533 | replace the first two instructions of these library functions |
| 1534 | with the sdiv or udiv plus "bx lr" instructions when the CPU |
| 1535 | it is running on supports them. Typically this will be faster |
| 1536 | and less power intensive than running the original library |
| 1537 | code to do integer division. |
| 1538 | |
Nicolas Pitre | 704bdda | 2006-01-14 16:33:50 +0000 | [diff] [blame] | 1539 | config AEABI |
| 1540 | bool "Use the ARM EABI to compile the kernel" |
| 1541 | help |
| 1542 | This option allows for the kernel to be compiled using the latest |
| 1543 | ARM ABI (aka EABI). This is only useful if you are using a user |
| 1544 | space environment that is also compiled with EABI. |
| 1545 | |
| 1546 | Since there are major incompatibilities between the legacy ABI and |
| 1547 | EABI, especially with regard to structure member alignment, this |
| 1548 | option also changes the kernel syscall calling convention to |
| 1549 | disambiguate both ABIs and allow for backward compatibility support |
| 1550 | (selected with CONFIG_OABI_COMPAT). |
| 1551 | |
| 1552 | To use this you need GCC version 4.0.0 or later. |
| 1553 | |
Nicolas Pitre | 6c90c87 | 2006-01-14 16:37:15 +0000 | [diff] [blame] | 1554 | config OABI_COMPAT |
Russell King | a73a3ff | 2006-02-08 21:09:55 +0000 | [diff] [blame] | 1555 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
Kees Cook | d6f94fa | 2013-01-16 18:53:14 -0800 | [diff] [blame] | 1556 | depends on AEABI && !THUMB2_KERNEL |
Nicolas Pitre | 6c90c87 | 2006-01-14 16:37:15 +0000 | [diff] [blame] | 1557 | help |
| 1558 | This option preserves the old syscall interface along with the |
| 1559 | new (ARM EABI) one. It also provides a compatibility layer to |
| 1560 | intercept syscalls that have structure arguments which layout |
| 1561 | in memory differs between the legacy ABI and the new ARM EABI |
| 1562 | (only for non "thumb" binaries). This option adds a tiny |
| 1563 | overhead to all syscalls and produces a slightly larger kernel. |
Kees Cook | 9170217 | 2013-11-09 00:51:56 +0100 | [diff] [blame] | 1564 | |
| 1565 | The seccomp filter system will not be available when this is |
| 1566 | selected, since there is no way yet to sensibly distinguish |
| 1567 | between calling conventions during filtering. |
| 1568 | |
Nicolas Pitre | 6c90c87 | 2006-01-14 16:37:15 +0000 | [diff] [blame] | 1569 | If you know you'll be using only pure EABI user space then you |
| 1570 | can say N here. If this option is not selected and you attempt |
| 1571 | to execute a legacy ABI binary then the result will be |
| 1572 | UNPREDICTABLE (in fact it can be predicted that it won't work |
Kees Cook | b02f846 | 2013-11-09 00:31:11 +0100 | [diff] [blame] | 1573 | at all). If in doubt say N. |
Nicolas Pitre | 6c90c87 | 2006-01-14 16:37:15 +0000 | [diff] [blame] | 1574 | |
Mel Gorman | eb33575 | 2009-05-13 17:34:48 +0100 | [diff] [blame] | 1575 | config ARCH_HAS_HOLES_MEMORYMODEL |
Mel Gorman | e80d6a2 | 2008-08-14 11:10:14 +0100 | [diff] [blame] | 1576 | bool |
Mel Gorman | e80d6a2 | 2008-08-14 11:10:14 +0100 | [diff] [blame] | 1577 | |
Russell King | 05944d7 | 2006-11-30 20:43:51 +0000 | [diff] [blame] | 1578 | config ARCH_SPARSEMEM_ENABLE |
| 1579 | bool |
| 1580 | |
Russell King | 07a2f73 | 2008-10-01 21:39:58 +0100 | [diff] [blame] | 1581 | config ARCH_SPARSEMEM_DEFAULT |
| 1582 | def_bool ARCH_SPARSEMEM_ENABLE |
| 1583 | |
Russell King | 05944d7 | 2006-11-30 20:43:51 +0000 | [diff] [blame] | 1584 | config ARCH_SELECT_MEMORY_MODEL |
Russell King | be37030 | 2010-05-07 17:40:33 +0100 | [diff] [blame] | 1585 | def_bool ARCH_SPARSEMEM_ENABLE |
Yasunori Goto | c80d79d | 2006-04-10 22:53:53 -0700 | [diff] [blame] | 1586 | |
Will Deacon | 7b7bf49 | 2011-05-19 13:21:14 +0100 | [diff] [blame] | 1587 | config HAVE_ARCH_PFN_VALID |
| 1588 | def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM |
| 1589 | |
Steve Capper | b8cd51a | 2014-10-09 15:29:20 -0700 | [diff] [blame] | 1590 | config HAVE_GENERIC_RCU_GUP |
| 1591 | def_bool y |
| 1592 | depends on ARM_LPAE |
| 1593 | |
Nicolas Pitre | 053a96c | 2008-09-19 00:36:12 -0400 | [diff] [blame] | 1594 | config HIGHMEM |
Russell King | e8db89a | 2011-05-12 09:53:05 +0100 | [diff] [blame] | 1595 | bool "High Memory Support" |
| 1596 | depends on MMU |
Nicolas Pitre | 053a96c | 2008-09-19 00:36:12 -0400 | [diff] [blame] | 1597 | help |
| 1598 | The address space of ARM processors is only 4 Gigabytes large |
| 1599 | and it has to accommodate user address space, kernel address |
| 1600 | space as well as some memory mapped IO. That means that, if you |
| 1601 | have a large amount of physical memory and/or IO, not all of the |
| 1602 | memory can be "permanently mapped" by the kernel. The physical |
| 1603 | memory that is not permanently mapped is called "high memory". |
| 1604 | |
| 1605 | Depending on the selected kernel/user memory split, minimum |
| 1606 | vmalloc space and actual amount of RAM, you may not need this |
| 1607 | option which should result in a slightly faster kernel. |
| 1608 | |
| 1609 | If unsure, say n. |
| 1610 | |
Russell King | 65cec8e | 2009-08-17 20:02:06 +0100 | [diff] [blame] | 1611 | config HIGHPTE |
Russell King | 9a431bd | 2015-06-25 10:44:08 +0100 | [diff] [blame] | 1612 | bool "Allocate 2nd-level pagetables from highmem" if EXPERT |
Russell King | 65cec8e | 2009-08-17 20:02:06 +0100 | [diff] [blame] | 1613 | depends on HIGHMEM |
Russell King | 9a431bd | 2015-06-25 10:44:08 +0100 | [diff] [blame] | 1614 | default y |
Russell King | b4d103d | 2015-06-25 10:49:45 +0100 | [diff] [blame] | 1615 | help |
| 1616 | The VM uses one page of physical memory for each page table. |
| 1617 | For systems with a lot of processes, this can use a lot of |
| 1618 | precious low memory, eventually leading to low memory being |
| 1619 | consumed by page tables. Setting this option will allow |
| 1620 | user-space 2nd level page tables to reside in high memory. |
Russell King | 65cec8e | 2009-08-17 20:02:06 +0100 | [diff] [blame] | 1621 | |
Russell King | a5e090a | 2015-08-19 20:40:41 +0100 | [diff] [blame] | 1622 | config CPU_SW_DOMAIN_PAN |
| 1623 | bool "Enable use of CPU domains to implement privileged no-access" |
| 1624 | depends on MMU && !ARM_LPAE |
Jamie Iles | 1b8873a | 2010-02-02 20:25:44 +0100 | [diff] [blame] | 1625 | default y |
| 1626 | help |
Russell King | a5e090a | 2015-08-19 20:40:41 +0100 | [diff] [blame] | 1627 | Increase kernel security by ensuring that normal kernel accesses |
| 1628 | are unable to access userspace addresses. This can help prevent |
| 1629 | use-after-free bugs becoming an exploitable privilege escalation |
| 1630 | by ensuring that magic values (such as LIST_POISON) will always |
| 1631 | fault when dereferenced. |
| 1632 | |
| 1633 | CPUs with low-vector mappings use a best-efforts implementation. |
| 1634 | Their lower 1MB needs to remain accessible for the vectors, but |
| 1635 | the remainder of userspace will become appropriately inaccessible. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | |
| 1637 | config HW_PERF_EVENTS |
Mark Rutland | fa8ad78 | 2015-07-06 12:23:53 +0100 | [diff] [blame] | 1638 | def_bool y |
| 1639 | depends on ARM_PMU |
Jamie Iles | 1b8873a | 2010-02-02 20:25:44 +0100 | [diff] [blame] | 1640 | |
Catalin Marinas | 1355e2a | 2012-07-25 14:32:38 +0100 | [diff] [blame] | 1641 | config SYS_SUPPORTS_HUGETLBFS |
| 1642 | def_bool y |
| 1643 | depends on ARM_LPAE |
| 1644 | |
Catalin Marinas | 8d96250 | 2012-07-25 14:39:26 +0100 | [diff] [blame] | 1645 | config HAVE_ARCH_TRANSPARENT_HUGEPAGE |
| 1646 | def_bool y |
| 1647 | depends on ARM_LPAE |
| 1648 | |
Steven Capper | 4bfab20 | 2013-07-26 14:58:22 +0100 | [diff] [blame] | 1649 | config ARCH_WANT_GENERAL_HUGETLB |
| 1650 | def_bool y |
| 1651 | |
Ard Biesheuvel | 7d485f6 | 2014-11-24 16:54:35 +0100 | [diff] [blame] | 1652 | config ARM_MODULE_PLTS |
| 1653 | bool "Use PLTs to allow module memory to spill over into vmalloc area" |
| 1654 | depends on MODULES |
| 1655 | help |
| 1656 | Allocate PLTs when loading modules so that jumps and calls whose |
| 1657 | targets are too far away for their relative offsets to be encoded |
| 1658 | in the instructions themselves can be bounced via veneers in the |
| 1659 | module's PLT. This allows modules to be allocated in the generic |
| 1660 | vmalloc area after the dedicated module memory area has been |
| 1661 | exhausted. The modules will use slightly more memory, but after |
| 1662 | rounding up to page size, the actual memory footprint is usually |
| 1663 | the same. |
| 1664 | |
| 1665 | Say y if you are getting out of memory errors while loading modules |
| 1666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | source "mm/Kconfig" |
| 1668 | |
Magnus Damm | c1b2d97 | 2010-07-05 10:00:11 +0100 | [diff] [blame] | 1669 | config FORCE_MAX_ZONEORDER |
Ulrich Hecht | 36d6c92 | 2015-08-14 15:51:06 +0200 | [diff] [blame] | 1670 | int "Maximum zone order" |
Yegor Yefremov | 898f08e | 2012-10-08 14:37:53 -0700 | [diff] [blame] | 1671 | default "12" if SOC_AM33XX |
Uwe Kleine-König | 6d85e2b | 2011-11-17 14:36:23 +0100 | [diff] [blame] | 1672 | default "9" if SA1111 || ARCH_EFM32 |
Magnus Damm | c1b2d97 | 2010-07-05 10:00:11 +0100 | [diff] [blame] | 1673 | default "11" |
| 1674 | help |
| 1675 | The kernel memory allocator divides physically contiguous memory |
| 1676 | blocks into "zones", where each zone is a power of two number of |
| 1677 | pages. This option selects the largest power of two that the kernel |
| 1678 | keeps in the memory allocator. If you need to allocate very large |
| 1679 | blocks of physically contiguous memory, then you may need to |
| 1680 | increase this value. |
| 1681 | |
| 1682 | This config option is actually maximum order plus one. For example, |
| 1683 | a value of 11 means that the largest free memory block is 2^10 pages. |
| 1684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | config ALIGNMENT_TRAP |
| 1686 | bool |
Hyok S. Choi | f12d0d7 | 2006-09-26 17:36:37 +0900 | [diff] [blame] | 1687 | depends on CPU_CP15_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | default y if !ARCH_EBSA110 |
Russell King | e119bff | 2010-01-10 17:23:29 +0000 | [diff] [blame] | 1689 | select HAVE_PROC_CPU if PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | help |
Matt LaPlante | 84eb8d0 | 2006-10-03 22:53:09 +0200 | [diff] [blame] | 1691 | ARM processors cannot fetch/store information which is not |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
| 1693 | address divisible by 4. On 32-bit ARM processors, these non-aligned |
| 1694 | fetch/store instructions will be emulated in software if you say |
| 1695 | here, which has a severe performance impact. This is necessary for |
| 1696 | correct operation of some network protocols. With an IP-only |
| 1697 | configuration it is safe to say N, otherwise say Y. |
| 1698 | |
Lennert Buytenhek | 39ec58f | 2009-03-09 14:30:09 -0400 | [diff] [blame] | 1699 | config UACCESS_WITH_MEMCPY |
Linus Walleij | 38ef2ad | 2012-09-10 16:36:37 +0100 | [diff] [blame] | 1700 | bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()" |
| 1701 | depends on MMU |
Lennert Buytenhek | 39ec58f | 2009-03-09 14:30:09 -0400 | [diff] [blame] | 1702 | default y if CPU_FEROCEON |
| 1703 | help |
| 1704 | Implement faster copy_to_user and clear_user methods for CPU |
| 1705 | cores where a 8-word STM instruction give significantly higher |
| 1706 | memory write throughput than a sequence of individual 32bit stores. |
| 1707 | |
| 1708 | A possible side effect is a slight increase in scheduling latency |
| 1709 | between threads sharing the same address space if they invoke |
| 1710 | such copy operations with large buffers. |
| 1711 | |
| 1712 | However, if the CPU data cache is using a write-allocate mode, |
| 1713 | this option is unlikely to provide any performance gain. |
| 1714 | |
Nicolas Pitre | 70c70d9 | 2010-08-26 15:08:35 -0700 | [diff] [blame] | 1715 | config SECCOMP |
| 1716 | bool |
| 1717 | prompt "Enable seccomp to safely compute untrusted bytecode" |
| 1718 | ---help--- |
| 1719 | This kernel feature is useful for number crunching applications |
| 1720 | that may need to compute untrusted bytecode during their |
| 1721 | execution. By using pipes or other transports made available to |
| 1722 | the process as file descriptors supporting the read/write |
| 1723 | syscalls, it's possible to isolate those applications in |
| 1724 | their own address space using seccomp. Once seccomp is |
| 1725 | enabled via prctl(PR_SET_SECCOMP), it cannot be disabled |
| 1726 | and the task is only allowed to execute a few safe syscalls |
| 1727 | defined by each seccomp mode. |
| 1728 | |
Stefano Stabellini | 06e6295 | 2013-10-15 15:47:14 +0000 | [diff] [blame] | 1729 | config SWIOTLB |
| 1730 | def_bool y |
| 1731 | |
| 1732 | config IOMMU_HELPER |
| 1733 | def_bool SWIOTLB |
| 1734 | |
Stefano Stabellini | 02c2433 | 2015-11-23 10:32:57 +0000 | [diff] [blame] | 1735 | config PARAVIRT |
| 1736 | bool "Enable paravirtualization code" |
| 1737 | help |
| 1738 | This changes the kernel so it can modify itself when it is run |
| 1739 | under a hypervisor, potentially improving performance significantly |
| 1740 | over full virtualization. |
| 1741 | |
| 1742 | config PARAVIRT_TIME_ACCOUNTING |
| 1743 | bool "Paravirtual steal time accounting" |
| 1744 | select PARAVIRT |
| 1745 | default n |
| 1746 | help |
| 1747 | Select this option to enable fine granularity task steal time |
| 1748 | accounting. Time spent executing other tasks in parallel with |
| 1749 | the current vCPU is discounted from the vCPU power. To account for |
| 1750 | that, there can be a small performance impact. |
| 1751 | |
| 1752 | If in doubt, say N here. |
| 1753 | |
Stefano Stabellini | eff8d64 | 2012-09-17 14:58:17 +0000 | [diff] [blame] | 1754 | config XEN_DOM0 |
| 1755 | def_bool y |
| 1756 | depends on XEN |
| 1757 | |
| 1758 | config XEN |
Julien Grall | c2ba1f7 | 2014-09-17 14:07:06 -0700 | [diff] [blame] | 1759 | bool "Xen guest support on ARM" |
Ian Campbell | 85323a9 | 2013-03-07 07:17:25 +0000 | [diff] [blame] | 1760 | depends on ARM && AEABI && OF |
Arnd Bergmann | f880b67 | 2012-10-09 10:33:52 +0000 | [diff] [blame] | 1761 | depends on CPU_V7 && !CPU_V6 |
Ian Campbell | 85323a9 | 2013-03-07 07:17:25 +0000 | [diff] [blame] | 1762 | depends on !GENERIC_ATOMIC64 |
Uwe Kleine-König | 7693dec | 2014-03-03 09:25:52 -0500 | [diff] [blame] | 1763 | depends on MMU |
Russell King | 51aaf81 | 2014-04-22 22:26:27 +0100 | [diff] [blame] | 1764 | select ARCH_DMA_ADDR_T_64BIT |
Stefano Stabellini | 17b7ab8 | 2013-04-24 18:47:18 +0000 | [diff] [blame] | 1765 | select ARM_PSCI |
Stefano Stabellini | 83862cc | 2013-10-10 13:40:44 +0000 | [diff] [blame] | 1766 | select SWIOTLB_XEN |
Stefano Stabellini | 02c2433 | 2015-11-23 10:32:57 +0000 | [diff] [blame] | 1767 | select PARAVIRT |
Stefano Stabellini | eff8d64 | 2012-09-17 14:58:17 +0000 | [diff] [blame] | 1768 | help |
| 1769 | Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. |
| 1770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | endmenu |
| 1772 | |
| 1773 | menu "Boot options" |
| 1774 | |
Grant Likely | 9eb8f67 | 2011-04-28 14:27:20 -0600 | [diff] [blame] | 1775 | config USE_OF |
| 1776 | bool "Flattened Device Tree support" |
Russell King | b1b3f49 | 2012-10-06 17:12:25 +0100 | [diff] [blame] | 1777 | select IRQ_DOMAIN |
Grant Likely | 9eb8f67 | 2011-04-28 14:27:20 -0600 | [diff] [blame] | 1778 | select OF |
Grant Likely | 9eb8f67 | 2011-04-28 14:27:20 -0600 | [diff] [blame] | 1779 | help |
| 1780 | Include support for flattened device tree machine descriptions. |
| 1781 | |
Nicolas Pitre | bd51e2f | 2012-09-01 03:03:25 +0100 | [diff] [blame] | 1782 | config ATAGS |
| 1783 | bool "Support for the traditional ATAGS boot data passing" if USE_OF |
| 1784 | default y |
| 1785 | help |
| 1786 | This is the traditional way of passing data to the kernel at boot |
| 1787 | time. If you are solely relying on the flattened device tree (or |
| 1788 | the ARM_ATAG_DTB_COMPAT option) then you may unselect this option |
| 1789 | to remove ATAGS support from your kernel binary. If unsure, |
| 1790 | leave this to y. |
| 1791 | |
| 1792 | config DEPRECATED_PARAM_STRUCT |
| 1793 | bool "Provide old way to pass kernel parameters" |
| 1794 | depends on ATAGS |
| 1795 | help |
| 1796 | This was deprecated in 2001 and announced to live on for 5 years. |
| 1797 | Some old boot loaders still use this way. |
| 1798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | # Compressed boot loader in ROM. Yes, we really want to ask about |
| 1800 | # TEXT and BSS so we preserve their values in the config files. |
| 1801 | config ZBOOT_ROM_TEXT |
| 1802 | hex "Compressed ROM boot loader base address" |
| 1803 | default "0" |
| 1804 | help |
| 1805 | The physical address at which the ROM-able zImage is to be |
| 1806 | placed in the target. Platforms which normally make use of |
| 1807 | ROM-able zImage formats normally set this to a suitable |
| 1808 | value in their defconfig file. |
| 1809 | |
| 1810 | If ZBOOT_ROM is not enabled, this has no effect. |
| 1811 | |
| 1812 | config ZBOOT_ROM_BSS |
| 1813 | hex "Compressed ROM boot loader BSS address" |
| 1814 | default "0" |
| 1815 | help |
Dan Fandrich | f8c440b | 2006-09-20 23:28:51 +0100 | [diff] [blame] | 1816 | The base address of an area of read/write memory in the target |
| 1817 | for the ROM-able zImage which must be available while the |
| 1818 | decompressor is running. It must be large enough to hold the |
| 1819 | entire decompressed kernel plus an additional 128 KiB. |
| 1820 | Platforms which normally make use of ROM-able zImage formats |
| 1821 | normally set this to a suitable value in their defconfig file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
| 1823 | If ZBOOT_ROM is not enabled, this has no effect. |
| 1824 | |
| 1825 | config ZBOOT_ROM |
| 1826 | bool "Compressed boot loader in ROM/flash" |
| 1827 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS |
Russell King | 1096813 | 2014-01-01 11:59:44 +0000 | [diff] [blame] | 1828 | depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | help |
| 1830 | Say Y here if you intend to execute your compressed kernel image |
| 1831 | (zImage) directly from ROM or flash. If unsure, say N. |
| 1832 | |
John Bonesio | e2a6a3a | 2011-05-27 18:45:50 -0400 | [diff] [blame] | 1833 | config ARM_APPENDED_DTB |
| 1834 | bool "Use appended device tree blob to zImage (EXPERIMENTAL)" |
Russell King | 1096813 | 2014-01-01 11:59:44 +0000 | [diff] [blame] | 1835 | depends on OF |
John Bonesio | e2a6a3a | 2011-05-27 18:45:50 -0400 | [diff] [blame] | 1836 | help |
| 1837 | With this option, the boot code will look for a device tree binary |
| 1838 | (DTB) appended to zImage |
| 1839 | (e.g. cat zImage <filename>.dtb > zImage_w_dtb). |
| 1840 | |
| 1841 | This is meant as a backward compatibility convenience for those |
| 1842 | systems with a bootloader that can't be upgraded to accommodate |
| 1843 | the documented boot protocol using a device tree. |
| 1844 | |
| 1845 | Beware that there is very little in terms of protection against |
| 1846 | this option being confused by leftover garbage in memory that might |
| 1847 | look like a DTB header after a reboot if no actual DTB is appended |
| 1848 | to zImage. Do not leave this option active in a production kernel |
| 1849 | if you don't intend to always append a DTB. Proper passing of the |
| 1850 | location into r2 of a bootloader provided DTB is always preferable |
| 1851 | to this option. |
| 1852 | |
Nicolas Pitre | b90b9a3 | 2011-09-13 22:37:07 -0400 | [diff] [blame] | 1853 | config ARM_ATAG_DTB_COMPAT |
| 1854 | bool "Supplement the appended DTB with traditional ATAG information" |
| 1855 | depends on ARM_APPENDED_DTB |
| 1856 | help |
| 1857 | Some old bootloaders can't be updated to a DTB capable one, yet |
| 1858 | they provide ATAGs with memory configuration, the ramdisk address, |
| 1859 | the kernel cmdline string, etc. Such information is dynamically |
| 1860 | provided by the bootloader and can't always be stored in a static |
| 1861 | DTB. To allow a device tree enabled kernel to be used with such |
| 1862 | bootloaders, this option allows zImage to extract the information |
| 1863 | from the ATAG list and store it at run time into the appended DTB. |
| 1864 | |
Genoud Richard | d0f34a1 | 2012-06-26 16:37:59 +0100 | [diff] [blame] | 1865 | choice |
| 1866 | prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT |
| 1867 | default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER |
| 1868 | |
| 1869 | config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER |
| 1870 | bool "Use bootloader kernel arguments if available" |
| 1871 | help |
| 1872 | Uses the command-line options passed by the boot loader instead of |
| 1873 | the device tree bootargs property. If the boot loader doesn't provide |
| 1874 | any, the device tree bootargs property will be used. |
| 1875 | |
| 1876 | config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND |
| 1877 | bool "Extend with bootloader kernel arguments" |
| 1878 | help |
| 1879 | The command-line arguments provided by the boot loader will be |
| 1880 | appended to the the device tree bootargs property. |
| 1881 | |
| 1882 | endchoice |
| 1883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | config CMDLINE |
| 1885 | string "Default kernel command string" |
| 1886 | default "" |
| 1887 | help |
| 1888 | On some architectures (EBSA110 and CATS), there is currently no way |
| 1889 | for the boot loader to pass arguments to the kernel. For these |
| 1890 | architectures, you should supply some command-line options at build |
| 1891 | time by entering them here. As a minimum, you should specify the |
| 1892 | memory size and the root device (e.g., mem=64M root=/dev/nfs). |
| 1893 | |
Victor Boivie | 4394c12 | 2011-05-04 17:07:55 +0100 | [diff] [blame] | 1894 | choice |
| 1895 | prompt "Kernel command line type" if CMDLINE != "" |
| 1896 | default CMDLINE_FROM_BOOTLOADER |
Nicolas Pitre | bd51e2f | 2012-09-01 03:03:25 +0100 | [diff] [blame] | 1897 | depends on ATAGS |
Victor Boivie | 4394c12 | 2011-05-04 17:07:55 +0100 | [diff] [blame] | 1898 | |
| 1899 | config CMDLINE_FROM_BOOTLOADER |
| 1900 | bool "Use bootloader kernel arguments if available" |
| 1901 | help |
| 1902 | Uses the command-line options passed by the boot loader. If |
| 1903 | the boot loader doesn't provide any, the default kernel command |
| 1904 | string provided in CMDLINE will be used. |
| 1905 | |
| 1906 | config CMDLINE_EXTEND |
| 1907 | bool "Extend bootloader kernel arguments" |
| 1908 | help |
| 1909 | The command-line arguments provided by the boot loader will be |
| 1910 | appended to the default kernel command string. |
| 1911 | |
Alexander Holler | 92d2040 | 2010-02-16 19:04:53 +0100 | [diff] [blame] | 1912 | config CMDLINE_FORCE |
| 1913 | bool "Always use the default kernel command string" |
Alexander Holler | 92d2040 | 2010-02-16 19:04:53 +0100 | [diff] [blame] | 1914 | help |
| 1915 | Always use the default kernel command string, even if the boot |
| 1916 | loader passes other arguments to the kernel. |
| 1917 | This is useful if you cannot or don't want to change the |
| 1918 | command-line options your boot loader passes to the kernel. |
Victor Boivie | 4394c12 | 2011-05-04 17:07:55 +0100 | [diff] [blame] | 1919 | endchoice |
Alexander Holler | 92d2040 | 2010-02-16 19:04:53 +0100 | [diff] [blame] | 1920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | config XIP_KERNEL |
| 1922 | bool "Kernel Execute-In-Place from ROM" |
Russell King | 1096813 | 2014-01-01 11:59:44 +0000 | [diff] [blame] | 1923 | depends on !ARM_LPAE && !ARCH_MULTIPLATFORM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | help |
| 1925 | Execute-In-Place allows the kernel to run from non-volatile storage |
| 1926 | directly addressable by the CPU, such as NOR flash. This saves RAM |
| 1927 | space since the text section of the kernel is not loaded from flash |
| 1928 | to RAM. Read-write sections, such as the data section and stack, |
| 1929 | are still copied to RAM. The XIP kernel is not compressed since |
| 1930 | it has to run directly from flash, so it will take more space to |
| 1931 | store it. The flash address used to link the kernel object files, |
| 1932 | and for storing it, is configuration dependent. Therefore, if you |
| 1933 | say Y here, you must know the proper physical address where to |
| 1934 | store the kernel image depending on your own flash memory usage. |
| 1935 | |
| 1936 | Also note that the make target becomes "make xipImage" rather than |
| 1937 | "make zImage" or "make Image". The final kernel binary to put in |
| 1938 | ROM memory will be arch/arm/boot/xipImage. |
| 1939 | |
| 1940 | If unsure, say N. |
| 1941 | |
| 1942 | config XIP_PHYS_ADDR |
| 1943 | hex "XIP Kernel Physical Location" |
| 1944 | depends on XIP_KERNEL |
| 1945 | default "0x00080000" |
| 1946 | help |
| 1947 | This is the physical address in your flash memory the kernel will |
| 1948 | be linked for and stored to. This address is dependent on your |
| 1949 | own flash usage. |
| 1950 | |
Richard Purdie | c587e4a | 2007-02-06 21:29:00 +0100 | [diff] [blame] | 1951 | config KEXEC |
| 1952 | bool "Kexec system call (EXPERIMENTAL)" |
Stephen Warren | 19ab428 | 2013-06-14 16:14:14 +0100 | [diff] [blame] | 1953 | depends on (!SMP || PM_SLEEP_SMP) |
Arnd Bergmann | cb1293e | 2015-05-26 15:40:44 +0100 | [diff] [blame] | 1954 | depends on !CPU_V7M |
Dave Young | 2965faa | 2015-09-09 15:38:55 -0700 | [diff] [blame] | 1955 | select KEXEC_CORE |
Richard Purdie | c587e4a | 2007-02-06 21:29:00 +0100 | [diff] [blame] | 1956 | help |
| 1957 | kexec is a system call that implements the ability to shutdown your |
| 1958 | current kernel, and to start another kernel. It is like a reboot |
Matt LaPlante | 01dd2fb | 2007-10-20 01:34:40 +0200 | [diff] [blame] | 1959 | but it is independent of the system firmware. And like a reboot |
Richard Purdie | c587e4a | 2007-02-06 21:29:00 +0100 | [diff] [blame] | 1960 | you can start any kernel with it, not just Linux. |
| 1961 | |
| 1962 | It is an ongoing process to be certain the hardware in a machine |
| 1963 | is properly shutdown, so do not be surprised if this code does not |
Geert Uytterhoeven | bf22069 | 2013-08-20 21:38:03 +0200 | [diff] [blame] | 1964 | initially work for you. |
Richard Purdie | c587e4a | 2007-02-06 21:29:00 +0100 | [diff] [blame] | 1965 | |
Richard Purdie | 4cd9d6f | 2008-01-02 00:56:46 +0100 | [diff] [blame] | 1966 | config ATAGS_PROC |
| 1967 | bool "Export atags in procfs" |
Nicolas Pitre | bd51e2f | 2012-09-01 03:03:25 +0100 | [diff] [blame] | 1968 | depends on ATAGS && KEXEC |
Uli Luckas | b98d729 | 2008-02-22 16:45:18 +0100 | [diff] [blame] | 1969 | default y |
Richard Purdie | 4cd9d6f | 2008-01-02 00:56:46 +0100 | [diff] [blame] | 1970 | help |
| 1971 | Should the atags used to boot the kernel be exported in an "atags" |
| 1972 | file in procfs. Useful with kexec. |
| 1973 | |
Mika Westerberg | cb5d39b | 2010-11-18 19:14:52 +0100 | [diff] [blame] | 1974 | config CRASH_DUMP |
| 1975 | bool "Build kdump crash kernel (EXPERIMENTAL)" |
Mika Westerberg | cb5d39b | 2010-11-18 19:14:52 +0100 | [diff] [blame] | 1976 | help |
| 1977 | Generate crash dump after being started by kexec. This should |
| 1978 | be normally only set in special crash dump kernels which are |
| 1979 | loaded in the main kernel with kexec-tools into a specially |
| 1980 | reserved region and then later executed after a crash by |
| 1981 | kdump/kexec. The crash dump kernel must be compiled to a |
| 1982 | memory address not used by the main kernel |
| 1983 | |
| 1984 | For more details see Documentation/kdump/kdump.txt |
| 1985 | |
Eric Miao | e69edc79 | 2010-07-05 15:56:50 +0200 | [diff] [blame] | 1986 | config AUTO_ZRELADDR |
| 1987 | bool "Auto calculation of the decompressed kernel image address" |
Eric Miao | e69edc79 | 2010-07-05 15:56:50 +0200 | [diff] [blame] | 1988 | help |
| 1989 | ZRELADDR is the physical address where the decompressed kernel |
| 1990 | image will be placed. If AUTO_ZRELADDR is selected, the address |
| 1991 | will be determined at run-time by masking the current IP with |
| 1992 | 0xf8000000. This assumes the zImage being placed in the first 128MB |
| 1993 | from start of memory. |
| 1994 | |
Roy Franz | 81a0bc3 | 2015-09-23 20:17:54 -0700 | [diff] [blame] | 1995 | config EFI_STUB |
| 1996 | bool |
| 1997 | |
| 1998 | config EFI |
| 1999 | bool "UEFI runtime support" |
| 2000 | depends on OF && !CPU_BIG_ENDIAN && MMU && AUTO_ZRELADDR && !XIP_KERNEL |
| 2001 | select UCS2_STRING |
| 2002 | select EFI_PARAMS_FROM_FDT |
| 2003 | select EFI_STUB |
| 2004 | select EFI_ARMSTUB |
| 2005 | select EFI_RUNTIME_WRAPPERS |
| 2006 | ---help--- |
| 2007 | This option provides support for runtime services provided |
| 2008 | by UEFI firmware (such as non-volatile variables, realtime |
| 2009 | clock, and platform reset). A UEFI stub is also provided to |
| 2010 | allow the kernel to be booted as an EFI application. This |
| 2011 | is only useful for kernels that may run on systems that have |
| 2012 | UEFI firmware. |
| 2013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | endmenu |
| 2015 | |
Russell King | ac9d7ef | 2008-08-18 17:26:00 +0100 | [diff] [blame] | 2016 | menu "CPU Power Management" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | source "drivers/cpufreq/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | |
Russell King | ac9d7ef | 2008-08-18 17:26:00 +0100 | [diff] [blame] | 2020 | source "drivers/cpuidle/Kconfig" |
| 2021 | |
| 2022 | endmenu |
| 2023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | menu "Floating point emulation" |
| 2025 | |
| 2026 | comment "At least one emulation must be selected" |
| 2027 | |
| 2028 | config FPE_NWFPE |
| 2029 | bool "NWFPE math emulation" |
Dave Martin | 593c252 | 2010-12-13 21:56:03 +0100 | [diff] [blame] | 2030 | depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | ---help--- |
| 2032 | Say Y to include the NWFPE floating point emulator in the kernel. |
| 2033 | This is necessary to run most binaries. Linux does not currently |
| 2034 | support floating point hardware so you need to say Y here even if |
| 2035 | your machine has an FPA or floating point co-processor podule. |
| 2036 | |
| 2037 | You may say N here if you are going to load the Acorn FPEmulator |
| 2038 | early in the bootup. |
| 2039 | |
| 2040 | config FPE_NWFPE_XP |
| 2041 | bool "Support extended precision" |
Lennert Buytenhek | bedf142 | 2005-11-07 21:12:08 +0000 | [diff] [blame] | 2042 | depends on FPE_NWFPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | help |
| 2044 | Say Y to include 80-bit support in the kernel floating-point |
| 2045 | emulator. Otherwise, only 32 and 64-bit support is compiled in. |
| 2046 | Note that gcc does not generate 80-bit operations by default, |
| 2047 | so in most cases this option only enlarges the size of the |
| 2048 | floating point emulator without any good reason. |
| 2049 | |
| 2050 | You almost surely want to say N here. |
| 2051 | |
| 2052 | config FPE_FASTFPE |
| 2053 | bool "FastFPE math emulation (EXPERIMENTAL)" |
Kees Cook | d6f94fa | 2013-01-16 18:53:14 -0800 | [diff] [blame] | 2054 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | ---help--- |
| 2056 | Say Y here to include the FAST floating point emulator in the kernel. |
| 2057 | This is an experimental much faster emulator which now also has full |
| 2058 | precision for the mantissa. It does not support any exceptions. |
| 2059 | It is very simple, and approximately 3-6 times faster than NWFPE. |
| 2060 | |
| 2061 | It should be sufficient for most programs. It may be not suitable |
| 2062 | for scientific calculations, but you have to check this for yourself. |
| 2063 | If you do not feel you need a faster FP emulation you should better |
| 2064 | choose NWFPE. |
| 2065 | |
| 2066 | config VFP |
| 2067 | bool "VFP-format floating point maths" |
Russell King | e399b1a | 2011-01-17 15:08:32 +0000 | [diff] [blame] | 2068 | depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | help |
| 2070 | Say Y to include VFP support code in the kernel. This is needed |
| 2071 | if your hardware includes a VFP unit. |
| 2072 | |
| 2073 | Please see <file:Documentation/arm/VFP/release-notes.txt> for |
| 2074 | release notes and additional status information. |
| 2075 | |
| 2076 | Say N if your target does not have VFP hardware. |
| 2077 | |
Catalin Marinas | 25ebee0 | 2007-09-25 15:22:24 +0100 | [diff] [blame] | 2078 | config VFPv3 |
| 2079 | bool |
| 2080 | depends on VFP |
| 2081 | default y if CPU_V7 |
| 2082 | |
Catalin Marinas | b5872db | 2008-01-10 19:16:17 +0100 | [diff] [blame] | 2083 | config NEON |
| 2084 | bool "Advanced SIMD (NEON) Extension support" |
| 2085 | depends on VFPv3 && CPU_V7 |
| 2086 | help |
| 2087 | Say Y to include support code for NEON, the ARMv7 Advanced SIMD |
| 2088 | Extension. |
| 2089 | |
Ard Biesheuvel | 73c132c | 2013-05-16 11:41:48 +0200 | [diff] [blame] | 2090 | config KERNEL_MODE_NEON |
| 2091 | bool "Support for NEON in kernel mode" |
Russell King | c4a30c3 | 2013-09-22 11:08:50 +0100 | [diff] [blame] | 2092 | depends on NEON && AEABI |
Ard Biesheuvel | 73c132c | 2013-05-16 11:41:48 +0200 | [diff] [blame] | 2093 | help |
| 2094 | Say Y to include support for NEON in kernel mode. |
| 2095 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | endmenu |
| 2097 | |
| 2098 | menu "Userspace binary formats" |
| 2099 | |
| 2100 | source "fs/Kconfig.binfmt" |
| 2101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | endmenu |
| 2103 | |
| 2104 | menu "Power management options" |
| 2105 | |
Russell King | eceab4a | 2005-11-15 11:31:41 +0000 | [diff] [blame] | 2106 | source "kernel/power/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | |
Johannes Berg | f4cb570 | 2007-12-08 02:14:00 +0100 | [diff] [blame] | 2108 | config ARCH_SUSPEND_POSSIBLE |
Ezequiel Garcia | 19a0519 | 2013-08-16 10:28:24 +0100 | [diff] [blame] | 2109 | depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \ |
Uwe Kleine-König | f0d7515 | 2012-02-01 10:00:00 +0100 | [diff] [blame] | 2110 | CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK |
Johannes Berg | f4cb570 | 2007-12-08 02:14:00 +0100 | [diff] [blame] | 2111 | def_bool y |
| 2112 | |
Arnd Bergmann | 15e0d9e | 2011-10-01 21:09:39 +0200 | [diff] [blame] | 2113 | config ARM_CPU_SUSPEND |
| 2114 | def_bool PM_SLEEP |
| 2115 | |
Sebastian Capella | 603fb42 | 2014-03-25 01:20:29 +0100 | [diff] [blame] | 2116 | config ARCH_HIBERNATION_POSSIBLE |
| 2117 | bool |
| 2118 | depends on MMU |
| 2119 | default y if ARCH_SUSPEND_POSSIBLE |
| 2120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | endmenu |
| 2122 | |
Sam Ravnborg | d5950b4 | 2005-07-11 21:03:49 -0700 | [diff] [blame] | 2123 | source "net/Kconfig" |
| 2124 | |
Uwe Kleine-König | ac25150 | 2009-08-13 21:09:21 +0200 | [diff] [blame] | 2125 | source "drivers/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | |
Kumar Gala | 916f743 | 2015-02-26 15:49:09 -0600 | [diff] [blame] | 2127 | source "drivers/firmware/Kconfig" |
| 2128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | source "fs/Kconfig" |
| 2130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | source "arch/arm/Kconfig.debug" |
| 2132 | |
| 2133 | source "security/Kconfig" |
| 2134 | |
| 2135 | source "crypto/Kconfig" |
Ard Biesheuvel | 652ccae | 2015-03-10 09:47:44 +0100 | [diff] [blame] | 2136 | if CRYPTO |
| 2137 | source "arch/arm/crypto/Kconfig" |
| 2138 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | |
| 2140 | source "lib/Kconfig" |
Christoffer Dall | 749cf76c | 2013-01-20 18:28:06 -0500 | [diff] [blame] | 2141 | |
| 2142 | source "arch/arm/kvm/Kconfig" |