Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | menu "Kernel hacking" |
| 2 | |
Paul Mundt | afbfb52 | 2006-12-04 18:17:28 +0900 | [diff] [blame] | 3 | config TRACE_IRQFLAGS_SUPPORT |
Harvey Harrison | d7ef4fb | 2007-12-11 13:49:35 +0900 | [diff] [blame] | 4 | def_bool y |
Paul Mundt | afbfb52 | 2006-12-04 18:17:28 +0900 | [diff] [blame] | 5 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | source "lib/Kconfig.debug" |
| 7 | |
| 8 | config SH_STANDARD_BIOS |
| 9 | bool "Use LinuxSH standard BIOS" |
Paul Mundt | 1a013e2 | 2008-04-25 11:54:06 +0900 | [diff] [blame] | 10 | depends on SUPERH32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | help |
| 12 | Say Y here if your target has the gdb-sh-stub |
| 13 | package from www.m17n.org (or any conforming standard LinuxSH BIOS) |
| 14 | in FLASH or EPROM. The kernel will use standard BIOS calls during |
| 15 | boot for various housekeeping tasks (including calls to read and |
| 16 | write characters to a system console, get a MAC address from an |
| 17 | on-board Ethernet interface, and shut down the hardware). Note this |
| 18 | does not work with machines with an existing operating system in |
| 19 | mask ROM and no flash (WindowsCE machines fall in this category). |
| 20 | If unsure, say N. |
| 21 | |
| 22 | config EARLY_SCIF_CONSOLE |
| 23 | bool "Use early SCIF console" |
Paul Mundt | 6fc21b8 | 2006-11-27 12:10:23 +0900 | [diff] [blame] | 24 | help |
| 25 | This enables an early console using a fixed SCIF port. This can |
| 26 | be used by platforms that are either not running the SH |
| 27 | standard BIOS, or do not wish to use the BIOS callbacks for the |
| 28 | serial I/O. |
| 29 | |
| 30 | config EARLY_SCIF_CONSOLE_PORT |
Paul Mundt | 8d797cd | 2007-08-07 18:52:29 +0900 | [diff] [blame] | 31 | hex |
Paul Mundt | 6fc21b8 | 2006-11-27 12:10:23 +0900 | [diff] [blame] | 32 | depends on EARLY_SCIF_CONSOLE |
Paul Mundt | 2ad6990 | 2008-03-13 12:52:44 +0900 | [diff] [blame] | 33 | default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 |
| 34 | default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721 |
| 35 | default "0xf8420000" if CPU_SUBTYPE_SH7619 |
| 36 | default "0xff804000" if CPU_SUBTYPE_MXG |
| 37 | default "0xffc30000" if CPU_SUBTYPE_SHX3 |
| 38 | default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \ |
| 39 | CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366 |
| 40 | default "0xffe80000" if CPU_SH4 |
Magnus Damm | 5cbc3af | 2007-09-10 12:05:10 +0900 | [diff] [blame] | 41 | default "0xffea0000" if CPU_SUBTYPE_SH7785 |
Paul Mundt | 6d01f51 | 2007-11-26 18:17:21 +0900 | [diff] [blame] | 42 | default "0xfffe8000" if CPU_SUBTYPE_SH7203 |
Paul Mundt | a8f67f4 | 2007-11-26 19:54:02 +0900 | [diff] [blame] | 43 | default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263 |
Paul Mundt | 8d797cd | 2007-08-07 18:52:29 +0900 | [diff] [blame] | 44 | default "0x00000000" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | config EARLY_PRINTK |
| 47 | bool "Early printk support" |
| 48 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE |
| 49 | help |
| 50 | Say Y here to redirect kernel printk messages to the serial port |
| 51 | used by the SH-IPL bootloader, starting very early in the boot |
| 52 | process and ending when the kernel's serial console is initialised. |
| 53 | This option is only useful porting the kernel to a new machine, |
| 54 | when the kernel may crash or hang before the serial console is |
| 55 | initialised. If unsure, say N. |
| 56 | |
Paul Mundt | 6fc21b8 | 2006-11-27 12:10:23 +0900 | [diff] [blame] | 57 | On devices that are running SH-IPL and want to keep the port |
| 58 | initialization consistent while not using the BIOS callbacks, |
| 59 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using |
| 60 | the kernel command line option to toggle back and forth. |
| 61 | |
Paul Mundt | 91e656a | 2007-06-01 14:19:22 +0900 | [diff] [blame] | 62 | config DEBUG_BOOTMEM |
| 63 | depends on DEBUG_KERNEL |
| 64 | bool "Debug BOOTMEM initialization" |
| 65 | |
Paul Mundt | d153ea8 | 2006-09-27 18:20:16 +0900 | [diff] [blame] | 66 | config DEBUG_STACKOVERFLOW |
| 67 | bool "Check for stack overflows" |
Paul Mundt | 5db141a | 2007-11-21 17:47:15 +0900 | [diff] [blame] | 68 | depends on DEBUG_KERNEL && SUPERH32 |
Paul Mundt | d153ea8 | 2006-09-27 18:20:16 +0900 | [diff] [blame] | 69 | help |
| 70 | This option will cause messages to be printed if free stack space |
| 71 | drops below a certain limit. |
| 72 | |
| 73 | config DEBUG_STACK_USAGE |
| 74 | bool "Stack utilization instrumentation" |
| 75 | depends on DEBUG_KERNEL |
| 76 | help |
| 77 | Enables the display of the minimum amount of free stack which each |
| 78 | task has ever had available in the sysrq-T and sysrq-P debug output. |
| 79 | |
| 80 | This option will slow down process creation somewhat. |
| 81 | |
Paul Mundt | a6a31139 | 2006-09-27 18:22:14 +0900 | [diff] [blame] | 82 | config 4KSTACKS |
| 83 | bool "Use 4Kb for kernel stacks instead of 8Kb" |
Paul Mundt | 1f8404e | 2008-06-02 13:48:59 +0900 | [diff] [blame^] | 84 | depends on DEBUG_KERNEL && (MMU || BROKEN) |
Paul Mundt | a6a31139 | 2006-09-27 18:22:14 +0900 | [diff] [blame] | 85 | help |
| 86 | If you say Y here the kernel will use a 4Kb stacksize for the |
| 87 | kernel stack attached to each process/thread. This facilitates |
| 88 | running more threads on a system and also reduces the pressure |
| 89 | on the VM subsystem for higher order allocations. This option |
| 90 | will also use IRQ stacks to compensate for the reduced stackspace. |
| 91 | |
Paul Mundt | 110ed28 | 2007-11-02 12:16:51 +0900 | [diff] [blame] | 92 | config IRQSTACKS |
| 93 | bool "Use separate kernel stacks when processing interrupts" |
Paul Mundt | 5db141a | 2007-11-21 17:47:15 +0900 | [diff] [blame] | 94 | depends on DEBUG_KERNEL && SUPERH32 |
Paul Mundt | 110ed28 | 2007-11-02 12:16:51 +0900 | [diff] [blame] | 95 | help |
| 96 | If you say Y here the kernel will use separate kernel stacks |
| 97 | for handling hard and soft interrupts. This can help avoid |
| 98 | overflowing the process kernel stacks. |
| 99 | |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 100 | config SH_KGDB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | bool "Include KGDB kernel debugger" |
Paul Mundt | 2549b32 | 2006-09-27 16:22:33 +0900 | [diff] [blame] | 102 | select FRAME_POINTER |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 103 | select DEBUG_INFO |
Paul Mundt | 357d594 | 2007-06-11 15:32:07 +0900 | [diff] [blame] | 104 | depends on CPU_SH3 || CPU_SH4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | help |
| 106 | Include in-kernel hooks for kgdb, the Linux kernel source level |
| 107 | debugger. See <http://kgdb.sourceforge.net/> for more information. |
| 108 | Unless you are intending to debug the kernel, say N here. |
| 109 | |
| 110 | menu "KGDB configuration options" |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 111 | depends on SH_KGDB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | config MORE_COMPILE_OPTIONS |
| 114 | bool "Add any additional compile options" |
| 115 | help |
| 116 | If you want to add additional CFLAGS to the kernel build, enable this |
| 117 | option and then enter what you would like to add in the next question. |
| 118 | Note however that -g is already appended with the selection of KGDB. |
| 119 | |
| 120 | config COMPILE_OPTIONS |
| 121 | string "Additional compile arguments" |
| 122 | depends on MORE_COMPILE_OPTIONS |
| 123 | |
| 124 | config KGDB_NMI |
Harvey Harrison | d7ef4fb | 2007-12-11 13:49:35 +0900 | [diff] [blame] | 125 | def_bool n |
| 126 | prompt "Enter KGDB on NMI" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | config SH_KGDB_CONSOLE |
Harvey Harrison | d7ef4fb | 2007-12-11 13:49:35 +0900 | [diff] [blame] | 129 | def_bool n |
| 130 | prompt "Console messages through GDB" |
Paul Mundt | 808bde2 | 2007-11-06 17:34:33 +0900 | [diff] [blame] | 131 | depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 132 | select SERIAL_CORE_CONSOLE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | config KGDB_SYSRQ |
Harvey Harrison | d7ef4fb | 2007-12-11 13:49:35 +0900 | [diff] [blame] | 135 | def_bool y |
| 136 | prompt "Allow SysRq 'G' to enter KGDB" |
Paul Mundt | 0acc729 | 2007-11-06 17:50:07 +0900 | [diff] [blame] | 137 | depends on MAGIC_SYSRQ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | comment "Serial port setup" |
| 140 | |
| 141 | config KGDB_DEFPORT |
| 142 | int "Port number (ttySCn)" |
| 143 | default "1" |
| 144 | |
| 145 | config KGDB_DEFBAUD |
| 146 | int "Baud rate" |
| 147 | default "115200" |
| 148 | |
| 149 | choice |
| 150 | prompt "Parity" |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 151 | depends on SH_KGDB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | default KGDB_DEFPARITY_N |
| 153 | |
| 154 | config KGDB_DEFPARITY_N |
| 155 | bool "None" |
| 156 | |
| 157 | config KGDB_DEFPARITY_E |
| 158 | bool "Even" |
| 159 | |
| 160 | config KGDB_DEFPARITY_O |
| 161 | bool "Odd" |
| 162 | |
| 163 | endchoice |
| 164 | |
| 165 | choice |
| 166 | prompt "Data bits" |
Paul Mundt | fa5da2f | 2007-03-08 17:27:37 +0900 | [diff] [blame] | 167 | depends on SH_KGDB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | default KGDB_DEFBITS_8 |
| 169 | |
| 170 | config KGDB_DEFBITS_8 |
| 171 | bool "8" |
| 172 | |
| 173 | config KGDB_DEFBITS_7 |
| 174 | bool "7" |
| 175 | |
| 176 | endchoice |
| 177 | |
| 178 | endmenu |
| 179 | |
Paul Mundt | 8214d52 | 2007-11-21 16:58:56 +0900 | [diff] [blame] | 180 | if SUPERH64 |
| 181 | |
| 182 | config SH64_PROC_ASIDS |
| 183 | bool "Debug: report ASIDs through /proc/asids" |
| 184 | depends on PROC_FS |
| 185 | |
| 186 | config SH64_SR_WATCH |
| 187 | bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" |
| 188 | |
| 189 | config POOR_MANS_STRACE |
| 190 | bool "Debug: enable rudimentary strace facility" |
| 191 | help |
| 192 | This option allows system calls to be traced to the console. It also |
| 193 | aids in detecting kernel stack underflow. It is useful for debugging |
| 194 | early-userland problems (e.g. init incurring fatal exceptions.) |
| 195 | |
| 196 | config SH_ALPHANUMERIC |
| 197 | bool "Enable debug outputs to on-board alphanumeric display" |
| 198 | depends on SH_CAYMAN |
| 199 | |
| 200 | config SH_NO_BSS_INIT |
| 201 | bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" |
| 202 | |
| 203 | endif |
| 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | endmenu |