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

5 files changed, 543 insertions, 0 deletions

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 000000000000..04ce6e6569da
--- /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 000000000000..f30fce92aabb
--- /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 000000000000..d32220fbf4f1
--- /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 000000000000..0b2b5eb22e9b
--- /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 000000000000..c4712d7cc81d
--- /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 */