MIPS: Add Cavium OCTEON processor support files to arch/mips/cavium-octeon.
These are the rest of the new files needed to add OCTEON processor
support to the Linux kernel. Other than Makefile and Kconfig which
should be obvious, we have:
csrc-octeon.c -- Clock source driver for OCTEON.
dma-octeon.c -- Helper functions for mapping DMA memory.
flash_setup.c -- Register on-board flash with the MTD subsystem.
octeon-irq.c -- OCTEON interrupt controller managment.
octeon-memcpy.S -- Optimized memcpy() implementation.
serial.c -- Register 8250 platform driver and early console.
setup.c -- Early architecture initialization.
smp.c -- OCTEON SMP support.
octeon_switch.S -- Scheduler context switch for OCTEON.
c-octeon.c -- OCTEON cache controller support.
cex-oct.S -- OCTEON cache exception handler.
asm/mach-cavium-octeon/*.h -- Architecture include files.
Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
create mode 100644 arch/mips/cavium-octeon/Kconfig
create mode 100644 arch/mips/cavium-octeon/Makefile
create mode 100644 arch/mips/cavium-octeon/csrc-octeon.c
create mode 100644 arch/mips/cavium-octeon/dma-octeon.c
create mode 100644 arch/mips/cavium-octeon/flash_setup.c
create mode 100644 arch/mips/cavium-octeon/octeon-irq.c
create mode 100644 arch/mips/cavium-octeon/octeon-memcpy.S
create mode 100644 arch/mips/cavium-octeon/serial.c
create mode 100644 arch/mips/cavium-octeon/setup.c
create mode 100644 arch/mips/cavium-octeon/smp.c
create mode 100644 arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
create mode 100644 arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
create mode 100644 arch/mips/include/asm/mach-cavium-octeon/irq.h
create mode 100644 arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
create mode 100644 arch/mips/include/asm/mach-cavium-octeon/war.h
create mode 100644 arch/mips/include/asm/octeon/octeon.h
create mode 100644 arch/mips/kernel/octeon_switch.S
create mode 100644 arch/mips/mm/c-octeon.c
create mode 100644 arch/mips/mm/cex-oct.S
diff --git a/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
new file mode 100644
index 0000000..04ce6e6
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
@@ -0,0 +1,78 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004 Cavium Networks
+ */
+#ifndef __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_CAVIUM_OCTEON_CPU_FEATURE_OVERRIDES_H
+
+#include <linux/types.h>
+#include <asm/mipsregs.h>
+
+/*
+ * Cavium Octeons are MIPS64v2 processors
+ */
+#define cpu_dcache_line_size() 128
+#define cpu_icache_line_size() 128
+
+
+#define cpu_has_4kex 1
+#define cpu_has_3k_cache 0
+#define cpu_has_4k_cache 0
+#define cpu_has_tx39_cache 0
+#define cpu_has_fpu 0
+#define cpu_has_counter 1
+#define cpu_has_watch 1
+#define cpu_has_divec 1
+#define cpu_has_vce 0
+#define cpu_has_cache_cdex_p 0
+#define cpu_has_cache_cdex_s 0
+#define cpu_has_prefetch 1
+
+/*
+ * We should disable LL/SC on non SMP systems as it is faster to
+ * disable interrupts for atomic access than a LL/SC. Unfortunatly we
+ * cannot as this breaks asm/futex.h
+ */
+#define cpu_has_llsc 1
+#define cpu_has_vtag_icache 1
+#define cpu_has_dc_aliases 0
+#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_64bits 1
+#define cpu_has_octeon_cache 1
+#define cpu_has_saa octeon_has_saa()
+#define cpu_has_mips32r1 0
+#define cpu_has_mips32r2 0
+#define cpu_has_mips64r1 0
+#define cpu_has_mips64r2 1
+#define cpu_has_dsp 0
+#define cpu_has_mipsmt 0
+#define cpu_has_userlocal 0
+#define cpu_has_vint 0
+#define cpu_has_veic 0
+#define ARCH_HAS_READ_CURRENT_TIMER 1
+#define ARCH_HAS_IRQ_PER_CPU 1
+#define ARCH_HAS_SPINLOCK_PREFETCH 1
+#define spin_lock_prefetch(x) prefetch(x)
+#define PREFETCH_STRIDE 128
+
+static inline int read_current_timer(unsigned long *result)
+{
+ asm volatile ("rdhwr %0,$31\n"
+#ifndef CONFIG_64BIT
+ "\tsll %0, 0"
+#endif
+ : "=r" (*result));
+ return 0;
+}
+
+static inline int octeon_has_saa(void)
+{
+ int id;
+ asm volatile ("mfc0 %0, $15,0" : "=r" (id));
+ return id >= 0x000d0300;
+}
+
+#endif
diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
new file mode 100644
index 0000000..f30fce9
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
@@ -0,0 +1,64 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
+ *
+ *
+ * Similar to mach-generic/dma-coherence.h except
+ * plat_device_is_coherent hard coded to return 1.
+ *
+ */
+#ifndef __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
+#define __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
+
+struct device;
+
+dma_addr_t octeon_map_dma_mem(struct device *, void *, size_t);
+void octeon_unmap_dma_mem(struct device *, dma_addr_t);
+
+static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
+ size_t size)
+{
+ return octeon_map_dma_mem(dev, addr, size);
+}
+
+static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
+ struct page *page)
+{
+ return octeon_map_dma_mem(dev, page_address(page), PAGE_SIZE);
+}
+
+static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+ return dma_addr;
+}
+
+static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
+{
+ octeon_unmap_dma_mem(dev, dma_addr);
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+ return 1;
+}
+
+static inline void plat_extra_sync_for_device(struct device *dev)
+{
+ mb();
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+ return 1;
+}
+
+static inline int plat_dma_mapping_error(struct device *dev,
+ dma_addr_t dma_addr)
+{
+ return dma_addr == -1;
+}
+
+#endif /* __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/irq.h b/arch/mips/include/asm/mach-cavium-octeon/irq.h
new file mode 100644
index 0000000..d32220f
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/irq.h
@@ -0,0 +1,244 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004-2008 Cavium Networks
+ */
+#ifndef __OCTEON_IRQ_H__
+#define __OCTEON_IRQ_H__
+
+#define NR_IRQS OCTEON_IRQ_LAST
+#define MIPS_CPU_IRQ_BASE OCTEON_IRQ_SW0
+
+/* 0 - 7 represent the i8259 master */
+#define OCTEON_IRQ_I8259M0 0
+#define OCTEON_IRQ_I8259M1 1
+#define OCTEON_IRQ_I8259M2 2
+#define OCTEON_IRQ_I8259M3 3
+#define OCTEON_IRQ_I8259M4 4
+#define OCTEON_IRQ_I8259M5 5
+#define OCTEON_IRQ_I8259M6 6
+#define OCTEON_IRQ_I8259M7 7
+/* 8 - 15 represent the i8259 slave */
+#define OCTEON_IRQ_I8259S0 8
+#define OCTEON_IRQ_I8259S1 9
+#define OCTEON_IRQ_I8259S2 10
+#define OCTEON_IRQ_I8259S3 11
+#define OCTEON_IRQ_I8259S4 12
+#define OCTEON_IRQ_I8259S5 13
+#define OCTEON_IRQ_I8259S6 14
+#define OCTEON_IRQ_I8259S7 15
+/* 16 - 23 represent the 8 MIPS standard interrupt sources */
+#define OCTEON_IRQ_SW0 16
+#define OCTEON_IRQ_SW1 17
+#define OCTEON_IRQ_CIU0 18
+#define OCTEON_IRQ_CIU1 19
+#define OCTEON_IRQ_CIU4 20
+#define OCTEON_IRQ_5 21
+#define OCTEON_IRQ_PERF 22
+#define OCTEON_IRQ_TIMER 23
+/* 24 - 87 represent the sources in CIU_INTX_EN0 */
+#define OCTEON_IRQ_WORKQ0 24
+#define OCTEON_IRQ_WORKQ1 25
+#define OCTEON_IRQ_WORKQ2 26
+#define OCTEON_IRQ_WORKQ3 27
+#define OCTEON_IRQ_WORKQ4 28
+#define OCTEON_IRQ_WORKQ5 29
+#define OCTEON_IRQ_WORKQ6 30
+#define OCTEON_IRQ_WORKQ7 31
+#define OCTEON_IRQ_WORKQ8 32
+#define OCTEON_IRQ_WORKQ9 33
+#define OCTEON_IRQ_WORKQ10 34
+#define OCTEON_IRQ_WORKQ11 35
+#define OCTEON_IRQ_WORKQ12 36
+#define OCTEON_IRQ_WORKQ13 37
+#define OCTEON_IRQ_WORKQ14 38
+#define OCTEON_IRQ_WORKQ15 39
+#define OCTEON_IRQ_GPIO0 40
+#define OCTEON_IRQ_GPIO1 41
+#define OCTEON_IRQ_GPIO2 42
+#define OCTEON_IRQ_GPIO3 43
+#define OCTEON_IRQ_GPIO4 44
+#define OCTEON_IRQ_GPIO5 45
+#define OCTEON_IRQ_GPIO6 46
+#define OCTEON_IRQ_GPIO7 47
+#define OCTEON_IRQ_GPIO8 48
+#define OCTEON_IRQ_GPIO9 49
+#define OCTEON_IRQ_GPIO10 50
+#define OCTEON_IRQ_GPIO11 51
+#define OCTEON_IRQ_GPIO12 52
+#define OCTEON_IRQ_GPIO13 53
+#define OCTEON_IRQ_GPIO14 54
+#define OCTEON_IRQ_GPIO15 55
+#define OCTEON_IRQ_MBOX0 56
+#define OCTEON_IRQ_MBOX1 57
+#define OCTEON_IRQ_UART0 58
+#define OCTEON_IRQ_UART1 59
+#define OCTEON_IRQ_PCI_INT0 60
+#define OCTEON_IRQ_PCI_INT1 61
+#define OCTEON_IRQ_PCI_INT2 62
+#define OCTEON_IRQ_PCI_INT3 63
+#define OCTEON_IRQ_PCI_MSI0 64
+#define OCTEON_IRQ_PCI_MSI1 65
+#define OCTEON_IRQ_PCI_MSI2 66
+#define OCTEON_IRQ_PCI_MSI3 67
+#define OCTEON_IRQ_RESERVED68 68 /* Summary of CIU_INT_SUM1 */
+#define OCTEON_IRQ_TWSI 69
+#define OCTEON_IRQ_RML 70
+#define OCTEON_IRQ_TRACE 71
+#define OCTEON_IRQ_GMX_DRP0 72
+#define OCTEON_IRQ_GMX_DRP1 73
+#define OCTEON_IRQ_IPD_DRP 74
+#define OCTEON_IRQ_KEY_ZERO 75
+#define OCTEON_IRQ_TIMER0 76
+#define OCTEON_IRQ_TIMER1 77
+#define OCTEON_IRQ_TIMER2 78
+#define OCTEON_IRQ_TIMER3 79
+#define OCTEON_IRQ_USB0 80
+#define OCTEON_IRQ_PCM 81
+#define OCTEON_IRQ_MPI 82
+#define OCTEON_IRQ_TWSI2 83
+#define OCTEON_IRQ_POWIQ 84
+#define OCTEON_IRQ_IPDPPTHR 85
+#define OCTEON_IRQ_MII0 86
+#define OCTEON_IRQ_BOOTDMA 87
+/* 88 - 151 represent the sources in CIU_INTX_EN1 */
+#define OCTEON_IRQ_WDOG0 88
+#define OCTEON_IRQ_WDOG1 89
+#define OCTEON_IRQ_WDOG2 90
+#define OCTEON_IRQ_WDOG3 91
+#define OCTEON_IRQ_WDOG4 92
+#define OCTEON_IRQ_WDOG5 93
+#define OCTEON_IRQ_WDOG6 94
+#define OCTEON_IRQ_WDOG7 95
+#define OCTEON_IRQ_WDOG8 96
+#define OCTEON_IRQ_WDOG9 97
+#define OCTEON_IRQ_WDOG10 98
+#define OCTEON_IRQ_WDOG11 99
+#define OCTEON_IRQ_WDOG12 100
+#define OCTEON_IRQ_WDOG13 101
+#define OCTEON_IRQ_WDOG14 102
+#define OCTEON_IRQ_WDOG15 103
+#define OCTEON_IRQ_UART2 104
+#define OCTEON_IRQ_USB1 105
+#define OCTEON_IRQ_MII1 106
+#define OCTEON_IRQ_RESERVED107 107
+#define OCTEON_IRQ_RESERVED108 108
+#define OCTEON_IRQ_RESERVED109 109
+#define OCTEON_IRQ_RESERVED110 110
+#define OCTEON_IRQ_RESERVED111 111
+#define OCTEON_IRQ_RESERVED112 112
+#define OCTEON_IRQ_RESERVED113 113
+#define OCTEON_IRQ_RESERVED114 114
+#define OCTEON_IRQ_RESERVED115 115
+#define OCTEON_IRQ_RESERVED116 116
+#define OCTEON_IRQ_RESERVED117 117
+#define OCTEON_IRQ_RESERVED118 118
+#define OCTEON_IRQ_RESERVED119 119
+#define OCTEON_IRQ_RESERVED120 120
+#define OCTEON_IRQ_RESERVED121 121
+#define OCTEON_IRQ_RESERVED122 122
+#define OCTEON_IRQ_RESERVED123 123
+#define OCTEON_IRQ_RESERVED124 124
+#define OCTEON_IRQ_RESERVED125 125
+#define OCTEON_IRQ_RESERVED126 126
+#define OCTEON_IRQ_RESERVED127 127
+#define OCTEON_IRQ_RESERVED128 128
+#define OCTEON_IRQ_RESERVED129 129
+#define OCTEON_IRQ_RESERVED130 130
+#define OCTEON_IRQ_RESERVED131 131
+#define OCTEON_IRQ_RESERVED132 132
+#define OCTEON_IRQ_RESERVED133 133
+#define OCTEON_IRQ_RESERVED134 134
+#define OCTEON_IRQ_RESERVED135 135
+#define OCTEON_IRQ_RESERVED136 136
+#define OCTEON_IRQ_RESERVED137 137
+#define OCTEON_IRQ_RESERVED138 138
+#define OCTEON_IRQ_RESERVED139 139
+#define OCTEON_IRQ_RESERVED140 140
+#define OCTEON_IRQ_RESERVED141 141
+#define OCTEON_IRQ_RESERVED142 142
+#define OCTEON_IRQ_RESERVED143 143
+#define OCTEON_IRQ_RESERVED144 144
+#define OCTEON_IRQ_RESERVED145 145
+#define OCTEON_IRQ_RESERVED146 146
+#define OCTEON_IRQ_RESERVED147 147
+#define OCTEON_IRQ_RESERVED148 148
+#define OCTEON_IRQ_RESERVED149 149
+#define OCTEON_IRQ_RESERVED150 150
+#define OCTEON_IRQ_RESERVED151 151
+
+#ifdef CONFIG_PCI_MSI
+/* 152 - 215 represent the MSI interrupts 0-63 */
+#define OCTEON_IRQ_MSI_BIT0 152
+#define OCTEON_IRQ_MSI_BIT1 153
+#define OCTEON_IRQ_MSI_BIT2 154
+#define OCTEON_IRQ_MSI_BIT3 155
+#define OCTEON_IRQ_MSI_BIT4 156
+#define OCTEON_IRQ_MSI_BIT5 157
+#define OCTEON_IRQ_MSI_BIT6 158
+#define OCTEON_IRQ_MSI_BIT7 159
+#define OCTEON_IRQ_MSI_BIT8 160
+#define OCTEON_IRQ_MSI_BIT9 161
+#define OCTEON_IRQ_MSI_BIT10 162
+#define OCTEON_IRQ_MSI_BIT11 163
+#define OCTEON_IRQ_MSI_BIT12 164
+#define OCTEON_IRQ_MSI_BIT13 165
+#define OCTEON_IRQ_MSI_BIT14 166
+#define OCTEON_IRQ_MSI_BIT15 167
+#define OCTEON_IRQ_MSI_BIT16 168
+#define OCTEON_IRQ_MSI_BIT17 169
+#define OCTEON_IRQ_MSI_BIT18 170
+#define OCTEON_IRQ_MSI_BIT19 171
+#define OCTEON_IRQ_MSI_BIT20 172
+#define OCTEON_IRQ_MSI_BIT21 173
+#define OCTEON_IRQ_MSI_BIT22 174
+#define OCTEON_IRQ_MSI_BIT23 175
+#define OCTEON_IRQ_MSI_BIT24 176
+#define OCTEON_IRQ_MSI_BIT25 177
+#define OCTEON_IRQ_MSI_BIT26 178
+#define OCTEON_IRQ_MSI_BIT27 179
+#define OCTEON_IRQ_MSI_BIT28 180
+#define OCTEON_IRQ_MSI_BIT29 181
+#define OCTEON_IRQ_MSI_BIT30 182
+#define OCTEON_IRQ_MSI_BIT31 183
+#define OCTEON_IRQ_MSI_BIT32 184
+#define OCTEON_IRQ_MSI_BIT33 185
+#define OCTEON_IRQ_MSI_BIT34 186
+#define OCTEON_IRQ_MSI_BIT35 187
+#define OCTEON_IRQ_MSI_BIT36 188
+#define OCTEON_IRQ_MSI_BIT37 189
+#define OCTEON_IRQ_MSI_BIT38 190
+#define OCTEON_IRQ_MSI_BIT39 191
+#define OCTEON_IRQ_MSI_BIT40 192
+#define OCTEON_IRQ_MSI_BIT41 193
+#define OCTEON_IRQ_MSI_BIT42 194
+#define OCTEON_IRQ_MSI_BIT43 195
+#define OCTEON_IRQ_MSI_BIT44 196
+#define OCTEON_IRQ_MSI_BIT45 197
+#define OCTEON_IRQ_MSI_BIT46 198
+#define OCTEON_IRQ_MSI_BIT47 199
+#define OCTEON_IRQ_MSI_BIT48 200
+#define OCTEON_IRQ_MSI_BIT49 201
+#define OCTEON_IRQ_MSI_BIT50 202
+#define OCTEON_IRQ_MSI_BIT51 203
+#define OCTEON_IRQ_MSI_BIT52 204
+#define OCTEON_IRQ_MSI_BIT53 205
+#define OCTEON_IRQ_MSI_BIT54 206
+#define OCTEON_IRQ_MSI_BIT55 207
+#define OCTEON_IRQ_MSI_BIT56 208
+#define OCTEON_IRQ_MSI_BIT57 209
+#define OCTEON_IRQ_MSI_BIT58 210
+#define OCTEON_IRQ_MSI_BIT59 211
+#define OCTEON_IRQ_MSI_BIT60 212
+#define OCTEON_IRQ_MSI_BIT61 213
+#define OCTEON_IRQ_MSI_BIT62 214
+#define OCTEON_IRQ_MSI_BIT63 215
+
+#define OCTEON_IRQ_LAST 216
+#else
+#define OCTEON_IRQ_LAST 152
+#endif
+
+#endif
diff --git a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
new file mode 100644
index 0000000..0b2b5eb
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
@@ -0,0 +1,131 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005-2008 Cavium Networks, Inc
+ */
+#ifndef __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
+#define __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
+
+
+#define CP0_CYCLE_COUNTER $9, 6
+#define CP0_CVMCTL_REG $9, 7
+#define CP0_CVMMEMCTL_REG $11,7
+#define CP0_PRID_REG $15, 0
+#define CP0_PRID_OCTEON_PASS1 0x000d0000
+#define CP0_PRID_OCTEON_CN30XX 0x000d0200
+
+.macro kernel_entry_setup
+ # Registers set by bootloader:
+ # (only 32 bits set by bootloader, all addresses are physical
+ # addresses, and need to have the appropriate memory region set
+ # by the kernel
+ # a0 = argc
+ # a1 = argv (kseg0 compat addr)
+ # a2 = 1 if init core, zero otherwise
+ # a3 = address of boot descriptor block
+ .set push
+ .set arch=octeon
+ # Read the cavium mem control register
+ dmfc0 v0, CP0_CVMMEMCTL_REG
+ # Clear the lower 6 bits, the CVMSEG size
+ dins v0, $0, 0, 6
+ ori v0, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE
+ dmtc0 v0, CP0_CVMMEMCTL_REG # Write the cavium mem control register
+ dmfc0 v0, CP0_CVMCTL_REG # Read the cavium control register
+#ifdef CONFIG_CAVIUM_OCTEON_HW_FIX_UNALIGNED
+ # Disable unaligned load/store support but leave HW fixup enabled
+ or v0, v0, 0x5001
+ xor v0, v0, 0x1001
+#else
+ # Disable unaligned load/store and HW fixup support
+ or v0, v0, 0x5001
+ xor v0, v0, 0x5001
+#endif
+ # Read the processor ID register
+ mfc0 v1, CP0_PRID_REG
+ # Disable instruction prefetching (Octeon Pass1 errata)
+ or v0, v0, 0x2000
+ # Skip reenable of prefetching for Octeon Pass1
+ beq v1, CP0_PRID_OCTEON_PASS1, skip
+ nop
+ # Reenable instruction prefetching, not on Pass1
+ xor v0, v0, 0x2000
+ # Strip off pass number off of processor id
+ srl v1, 8
+ sll v1, 8
+ # CN30XX needs some extra stuff turned off for better performance
+ bne v1, CP0_PRID_OCTEON_CN30XX, skip
+ nop
+ # CN30XX Use random Icache replacement
+ or v0, v0, 0x400
+ # CN30XX Disable instruction prefetching
+ or v0, v0, 0x2000
+skip:
+ # Write the cavium control register
+ dmtc0 v0, CP0_CVMCTL_REG
+ sync
+ # Flush dcache after config change
+ cache 9, 0($0)
+ # Get my core id
+ rdhwr v0, $0
+ # Jump the master to kernel_entry
+ bne a2, zero, octeon_main_processor
+ nop
+
+#ifdef CONFIG_SMP
+
+ #
+ # All cores other than the master need to wait here for SMP bootstrap
+ # to begin
+ #
+
+ # This is the variable where the next core to boot os stored
+ PTR_LA t0, octeon_processor_boot
+octeon_spin_wait_boot:
+ # Get the core id of the next to be booted
+ LONG_L t1, (t0)
+ # Keep looping if it isn't me
+ bne t1, v0, octeon_spin_wait_boot
+ nop
+ # Get my GP from the global variable
+ PTR_LA t0, octeon_processor_gp
+ LONG_L gp, (t0)
+ # Get my SP from the global variable
+ PTR_LA t0, octeon_processor_sp
+ LONG_L sp, (t0)
+ # Set the SP global variable to zero so the master knows we've started
+ LONG_S zero, (t0)
+#ifdef __OCTEON__
+ syncw
+ syncw
+#else
+ sync
+#endif
+ # Jump to the normal Linux SMP entry point
+ j smp_bootstrap
+ nop
+#else /* CONFIG_SMP */
+
+ #
+ # Someone tried to boot SMP with a non SMP kernel. All extra cores
+ # will halt here.
+ #
+octeon_wait_forever:
+ wait
+ b octeon_wait_forever
+ nop
+
+#endif /* CONFIG_SMP */
+octeon_main_processor:
+ .set pop
+.endm
+
+/*
+ * Do SMP slave processor setup necessary before we can savely execute C code.
+ */
+ .macro smp_slave_setup
+ .endm
+
+#endif /* __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/war.h b/arch/mips/include/asm/mach-cavium-octeon/war.h
new file mode 100644
index 0000000..c4712d7
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/war.h
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2008 Cavium Networks <support@caviumnetworks.com>
+ */
+#ifndef __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
+#define __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR 0
+#define R4600_V1_HIT_CACHEOP_WAR 0
+#define R4600_V2_HIT_CACHEOP_WAR 0
+#define R5432_CP0_INTERRUPT_WAR 0
+#define BCM1250_M3_WAR 0
+#define SIBYTE_1956_WAR 0
+#define MIPS4K_ICACHE_REFILL_WAR 0
+#define MIPS_CACHE_SYNC_WAR 0
+#define TX49XX_ICACHE_INDEX_INV_WAR 0
+#define RM9000_CDEX_SMP_WAR 0
+#define ICACHE_REFILLS_WORKAROUND_WAR 0
+#define R10000_LLSC_WAR 0
+#define MIPS34K_MISSED_ITLB_WAR 0
+
+#endif /* __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H */