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diff --git a/cpu/mpc824x/start.S b/cpu/mpc824x/start.S
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-/*
- * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
- * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
- * Copyright (C) 2000,2001,2002 Wolfgang Denk <wd@denx.de>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/* U-Boot - Startup Code for PowerPC based Embedded Boards
- *
- *
- * The processor starts at 0x00000100 and the code is executed
- * from flash. The code is organized to be at an other address
- * in memory, but as long we don't jump around before relocating.
- * board_init lies at a quite high address and when the cpu has
- * jumped there, everything is ok.
- * This works because the cpu gives the FLASH (CS0) the whole
- * address space at startup, and board_init lies as a echo of
- * the flash somewhere up there in the memorymap.
- *
- * board_init will change CS0 to be positioned at the correct
- * address and (s)dram will be positioned at address 0
- */
-#include <config.h>
-#include <mpc824x.h>
-#include <timestamp.h>
-#include <version.h>
-
-#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
-
-#include <ppc_asm.tmpl>
-#include <ppc_defs.h>
-
-#include <asm/cache.h>
-#include <asm/mmu.h>
-
-#ifndef CONFIG_IDENT_STRING
-#define CONFIG_IDENT_STRING ""
-#endif
-
-/* We don't want the MMU yet.
-*/
-#undef MSR_KERNEL
-/* FP, Machine Check and Recoverable Interr. */
-#define MSR_KERNEL ( MSR_FP | MSR_ME | MSR_RI )
-
-/*
- * Set up GOT: Global Offset Table
- *
- * Use r12 to access the GOT
- */
- START_GOT
- GOT_ENTRY(_GOT2_TABLE_)
- GOT_ENTRY(_FIXUP_TABLE_)
-
- GOT_ENTRY(_start)
- GOT_ENTRY(_start_of_vectors)
- GOT_ENTRY(_end_of_vectors)
- GOT_ENTRY(transfer_to_handler)
-
- GOT_ENTRY(__init_end)
- GOT_ENTRY(_end)
- GOT_ENTRY(__bss_start)
-#if defined(CONFIG_FADS)
- GOT_ENTRY(environment)
-#endif
- END_GOT
-
-/*
- * r3 - 1st arg to board_init(): IMMP pointer
- * r4 - 2nd arg to board_init(): boot flag
- */
- .text
- .long 0x27051956 /* U-Boot Magic Number */
- .globl version_string
-version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
- .ascii CONFIG_IDENT_STRING, "\0"
-
- . = EXC_OFF_SYS_RESET
- .globl _start
-_start:
- li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */
- b boot_cold
-
- . = EXC_OFF_SYS_RESET + 0x10
-
- .globl _start_warm
-_start_warm:
- li r21, BOOTFLAG_WARM /* Software reboot */
- b boot_warm
-
-boot_cold:
-boot_warm:
-
- /* Initialize machine status; enable machine check interrupt */
- /*----------------------------------------------------------------------*/
- li r3, MSR_KERNEL /* Set FP, ME, RI flags */
- mtmsr r3
- mtspr SRR1, r3 /* Make SRR1 match MSR */
-
- addis r0,0,0x0000 /* lets make sure that r0 is really 0 */
- mtspr HID0, r0 /* disable I and D caches */
-
- mfspr r3, ICR /* clear Interrupt Cause Register */
-
- mfmsr r3 /* turn off address translation */
- addis r4,0,0xffff
- ori r4,r4,0xffcf
- and r3,r3,r4
- mtmsr r3
- isync
- sync /* the MMU should be off... */
-
-
-in_flash:
-#if defined(CONFIG_BMW)
- bl early_init_f /* Must be ASM: no stack yet! */
-#endif
- /*
- * Setup BATs - cannot be done in C since we don't have a stack yet
- */
- bl setup_bats
-
- /* Enable MMU.
- */
- mfmsr r3
- ori r3, r3, (MSR_IR | MSR_DR)
- mtmsr r3
-#if !defined(CONFIG_BMW)
- /* Enable and invalidate data cache.
- */
- mfspr r3, HID0
- mr r2, r3
- ori r3, r3, HID0_DCE | HID0_DCI
- ori r2, r2, HID0_DCE
- sync
- mtspr HID0, r3
- mtspr HID0, r2
- sync
-
- /* Allocate Initial RAM in data cache.
- */
- lis r3, CONFIG_SYS_INIT_RAM_ADDR@h
- ori r3, r3, CONFIG_SYS_INIT_RAM_ADDR@l
- li r2, 128
- mtctr r2
-1:
- dcbz r0, r3
- addi r3, r3, 32
- bdnz 1b
-
- /* Lock way0 in data cache.
- */
- mfspr r3, 1011
- lis r2, 0xffff
- ori r2, r2, 0xff1f
- and r3, r3, r2
- ori r3, r3, 0x0080
- sync
- mtspr 1011, r3
-#endif /* !CONFIG_BMW */
- /*
- * Thisk the stack pointer *somewhere* sensible. Doesnt
- * matter much where as we'll move it when we relocate
- */
- lis r1, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@h
- ori r1, r1, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@l
-
- li r0, 0 /* Make room for stack frame header and */
- stwu r0, -4(r1) /* clear final stack frame so that */
- stwu r0, -4(r1) /* stack backtraces terminate cleanly */
-
- /* let the C-code set up the rest */
- /* */
- /* Be careful to keep code relocatable ! */
- /*----------------------------------------------------------------------*/
-
- GET_GOT /* initialize GOT access */
-
- /* r3: IMMR */
- bl cpu_init_f /* run low-level CPU init code (from Flash) */
-
- mr r3, r21
- /* r3: BOOTFLAG */
- bl board_init_f /* run 1st part of board init code (from Flash) */
-
-
- .globl _start_of_vectors
-_start_of_vectors:
-
-/* Machine check */
- STD_EXCEPTION(EXC_OFF_MACH_CHCK, MachineCheck, MachineCheckException)
-
-/* Data Storage exception. "Never" generated on the 860. */
- STD_EXCEPTION(EXC_OFF_DATA_STOR, DataStorage, UnknownException)
-
-/* Instruction Storage exception. "Never" generated on the 860. */
- STD_EXCEPTION(EXC_OFF_INS_STOR, InstStorage, UnknownException)
-
-/* External Interrupt exception. */
- STD_EXCEPTION(EXC_OFF_EXTERNAL, ExtInterrupt, external_interrupt)
-
-/* Alignment exception. */
- . = EXC_OFF_ALIGN
-Alignment:
- EXCEPTION_PROLOG(SRR0, SRR1)
- mfspr r4,DAR
- stw r4,_DAR(r21)
- mfspr r5,DSISR
- stw r5,_DSISR(r21)
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
-
-/* Program check exception */
- . = EXC_OFF_PROGRAM
-ProgramCheck:
- EXCEPTION_PROLOG(SRR0, SRR1)
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
- MSR_KERNEL, COPY_EE)
-
- /* No FPU on MPC8xx. This exception is not supposed to happen.
- */
- STD_EXCEPTION(EXC_OFF_FPUNAVAIL, FPUnavailable, UnknownException)
-
- /* I guess we could implement decrementer, and may have
- * to someday for timekeeping.
- */
- STD_EXCEPTION(EXC_OFF_DECR, Decrementer, timer_interrupt)
- STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
- STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
- STD_EXCEPTION(0xc00, SystemCall, UnknownException)
-
- STD_EXCEPTION(EXC_OFF_TRACE, SingleStep, UnknownException)
-
- STD_EXCEPTION(EXC_OFF_FPUNASSIST, Trap_0e, UnknownException)
- STD_EXCEPTION(EXC_OFF_PMI, Trap_0f, UnknownException)
-
- STD_EXCEPTION(EXC_OFF_ITME, InstructionTransMiss, UnknownException)
- STD_EXCEPTION(EXC_OFF_DLTME, DataLoadTransMiss, UnknownException)
- STD_EXCEPTION(EXC_OFF_DSTME, DataStoreTransMiss, UnknownException)
- STD_EXCEPTION(EXC_OFF_IABE, InstructionBreakpoint, DebugException)
- STD_EXCEPTION(EXC_OFF_SMIE, SysManageInt, UnknownException)
- STD_EXCEPTION(0x1500, Reserved5, UnknownException)
- STD_EXCEPTION(0x1600, Reserved6, UnknownException)
- STD_EXCEPTION(0x1700, Reserved7, UnknownException)
- STD_EXCEPTION(0x1800, Reserved8, UnknownException)
- STD_EXCEPTION(0x1900, Reserved9, UnknownException)
- STD_EXCEPTION(0x1a00, ReservedA, UnknownException)
- STD_EXCEPTION(0x1b00, ReservedB, UnknownException)
- STD_EXCEPTION(0x1c00, ReservedC, UnknownException)
- STD_EXCEPTION(0x1d00, ReservedD, UnknownException)
- STD_EXCEPTION(0x1e00, ReservedE, UnknownException)
- STD_EXCEPTION(0x1f00, ReservedF, UnknownException)
-
- STD_EXCEPTION(EXC_OFF_RMTE, RunModeTrace, UnknownException)
-
- .globl _end_of_vectors
-_end_of_vectors:
-
-
- . = 0x3000
-
-/*
- * This code finishes saving the registers to the exception frame
- * and jumps to the appropriate handler for the exception.
- * Register r21 is pointer into trap frame, r1 has new stack pointer.
- */
- .globl transfer_to_handler
-transfer_to_handler:
- stw r22,_NIP(r21)
- lis r22,MSR_POW@h
- andc r23,r23,r22
- stw r23,_MSR(r21)
- SAVE_GPR(7, r21)
- SAVE_4GPRS(8, r21)
- SAVE_8GPRS(12, r21)
- SAVE_8GPRS(24, r21)
-#if 0
- andi. r23,r23,MSR_PR
- mfspr r23,SPRG3 /* if from user, fix up tss.regs */
- beq 2f
- addi r24,r1,STACK_FRAME_OVERHEAD
- stw r24,PT_REGS(r23)
-2: addi r2,r23,-TSS /* set r2 to current */
- tovirt(r2,r2,r23)
-#endif
- mflr r23
- andi. r24,r23,0x3f00 /* get vector offset */
- stw r24,TRAP(r21)
- li r22,0
- stw r22,RESULT(r21)
- mtspr SPRG2,r22 /* r1 is now kernel sp */
-#if 0
- addi r24,r2,TASK_STRUCT_SIZE /* check for kernel stack overflow */
- cmplw 0,r1,r2
- cmplw 1,r1,r24
- crand 1,1,4
- bgt stack_ovf /* if r2 < r1 < r2+TASK_STRUCT_SIZE */
-#endif
- lwz r24,0(r23) /* virtual address of handler */
- lwz r23,4(r23) /* where to go when done */
- mtspr SRR0,r24
- ori r20,r20,0x30 /* enable IR, DR */
- mtspr SRR1,r20
- mtlr r23
- SYNC
- rfi /* jump to handler, enable MMU */
-
-int_return:
- mfmsr r28 /* Disable interrupts */
- li r4,0
- ori r4,r4,MSR_EE
- andc r28,r28,r4
- SYNC /* Some chip revs need this... */
- mtmsr r28
- SYNC
- lwz r2,_CTR(r1)
- lwz r0,_LINK(r1)
- mtctr r2
- mtlr r0
- lwz r2,_XER(r1)
- lwz r0,_CCR(r1)
- mtspr XER,r2
- mtcrf 0xFF,r0
- REST_10GPRS(3, r1)
- REST_10GPRS(13, r1)
- REST_8GPRS(23, r1)
- REST_GPR(31, r1)
- lwz r2,_NIP(r1) /* Restore environment */
- lwz r0,_MSR(r1)
- mtspr SRR0,r2
- mtspr SRR1,r0
- lwz r0,GPR0(r1)
- lwz r2,GPR2(r1)
- lwz r1,GPR1(r1)
- SYNC
- rfi
-
-/* Cache functions.
-*/
- .globl icache_enable
-icache_enable:
- mfspr r5,HID0 /* turn on the I cache. */
- ori r5,r5,0x8800 /* Instruction cache only! */
- addis r6,0,0xFFFF
- ori r6,r6,0xF7FF
- and r6,r5,r6 /* clear the invalidate bit */
- sync
- mtspr HID0,r5
- mtspr HID0,r6
- isync
- sync
- blr
-
- .globl icache_disable
-icache_disable:
- mfspr r5,HID0
- addis r6,0,0xFFFF
- ori r6,r6,0x7FFF
- and r5,r5,r6
- sync
- mtspr HID0,r5
- isync
- sync
- blr
-
- .globl icache_status
-icache_status:
- mfspr r3, HID0
- srwi r3, r3, 15 /* >>15 & 1=> select bit 16 */
- andi. r3, r3, 1
- blr
-
- .globl dcache_enable
-dcache_enable:
- mfspr r5,HID0 /* turn on the D cache. */
- ori r5,r5,0x4400 /* Data cache only! */
- mfspr r4, PVR /* read PVR */
- srawi r3, r4, 16 /* shift off the least 16 bits */
- cmpi 0, 0, r3, 0xC /* Check for Max pvr */
- bne NotMax
- ori r5,r5,0x0040 /* setting the DCFA bit, for Max rev 1 errata */
-NotMax:
- addis r6,0,0xFFFF
- ori r6,r6,0xFBFF
- and r6,r5,r6 /* clear the invalidate bit */
- sync
- mtspr HID0,r5
- mtspr HID0,r6
- isync
- sync
- blr
-
- .globl dcache_disable
-dcache_disable:
- mfspr r5,HID0
- addis r6,0,0xFFFF
- ori r6,r6,0xBFFF
- and r5,r5,r6
- sync
- mtspr HID0,r5
- isync
- sync
- blr
-
- .globl dcache_status
-dcache_status:
- mfspr r3, HID0
- srwi r3, r3, 14 /* >>14 & 1=> select bit 17 */
- andi. r3, r3, 1
- blr
-
- .globl dc_read
-dc_read:
-/*TODO : who uses this, what should it do?
-*/
- blr
-
-
- .globl get_pvr
-get_pvr:
- mfspr r3, PVR
- blr
-
-
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code (addr_sp, gd, addr_moni)
- *
- * This "function" does not return, instead it continues in RAM
- * after relocating the monitor code.
- *
- * r3 = dest
- * r4 = src
- * r5 = length in bytes
- * r6 = cachelinesize
- */
- .globl relocate_code
-relocate_code:
-
- mr r1, r3 /* Set new stack pointer */
- mr r9, r4 /* Save copy of Global Data pointer */
- mr r10, r5 /* Save copy of Destination Address */
-
- GET_GOT
- mr r3, r5 /* Destination Address */
-#ifdef CONFIG_SYS_RAMBOOT
- lis r4, CONFIG_SYS_SDRAM_BASE@h /* Source Address */
- ori r4, r4, CONFIG_SYS_SDRAM_BASE@l
-#else
- lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */
- ori r4, r4, CONFIG_SYS_MONITOR_BASE@l
-#endif
- lwz r5, GOT(__init_end)
- sub r5, r5, r4
- li r6, CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
-
- /*
- * Fix GOT pointer:
- *
- * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
- *
- * Offset:
- */
- sub r15, r10, r4
-
- /* First our own GOT */
- add r12, r12, r15
- /* the the one used by the C code */
- add r30, r30, r15
-
- /*
- * Now relocate code
- */
-
- cmplw cr1,r3,r4
- addi r0,r5,3
- srwi. r0,r0,2
- beq cr1,4f /* In place copy is not necessary */
- beq 7f /* Protect against 0 count */
- mtctr r0
- bge cr1,2f
-
- la r8,-4(r4)
- la r7,-4(r3)
-1: lwzu r0,4(r8)
- stwu r0,4(r7)
- bdnz 1b
- b 4f
-
-2: slwi r0,r0,2
- add r8,r4,r0
- add r7,r3,r0
-3: lwzu r0,-4(r8)
- stwu r0,-4(r7)
- bdnz 3b
-
-4:
-#if !defined(CONFIG_BMW)
-/* Unlock the data cache and invalidate locked area */
- xor r0, r0, r0
- mtspr 1011, r0
- lis r4, CONFIG_SYS_INIT_RAM_ADDR@h
- ori r4, r4, CONFIG_SYS_INIT_RAM_ADDR@l
- li r0, 128
- mtctr r0
-41:
- dcbi r0, r4
- addi r4, r4, 32
- bdnz 41b
-#endif
-
-/*
- * Now flush the cache: note that we must start from a cache aligned
- * address. Otherwise we might miss one cache line.
- */
- cmpwi r6,0
- add r5,r3,r5
- beq 7f /* Always flush prefetch queue in any case */
- subi r0,r6,1
- andc r3,r3,r0
- mr r4,r3
-5: dcbst 0,r4
- add r4,r4,r6
- cmplw r4,r5
- blt 5b
- sync /* Wait for all dcbst to complete on bus */
- mr r4,r3
-6: icbi 0,r4
- add r4,r4,r6
- cmplw r4,r5
- blt 6b
-7: sync /* Wait for all icbi to complete on bus */
- isync
-
-/*
- * We are done. Do not return, instead branch to second part of board
- * initialization, now running from RAM.
- */
-
- addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
- mtlr r0
- blr
-
-in_ram:
-
- /*
- * Relocation Function, r12 point to got2+0x8000
- *
- * Adjust got2 pointers, no need to check for 0, this code
- * already puts a few entries in the table.
- */
- li r0,__got2_entries@sectoff@l
- la r3,GOT(_GOT2_TABLE_)
- lwz r11,GOT(_GOT2_TABLE_)
- mtctr r0
- sub r11,r3,r11
- addi r3,r3,-4
-1: lwzu r0,4(r3)
- cmpwi r0,0
- beq- 2f
- add r0,r0,r11
- stw r0,0(r3)
-2: bdnz 1b
-
- /*
- * Now adjust the fixups and the pointers to the fixups
- * in case we need to move ourselves again.
- */
- li r0,__fixup_entries@sectoff@l
- lwz r3,GOT(_FIXUP_TABLE_)
- cmpwi r0,0
- mtctr r0
- addi r3,r3,-4
- beq 4f
-3: lwzu r4,4(r3)
- lwzux r0,r4,r11
- add r0,r0,r11
- stw r10,0(r3)
- stw r0,0(r4)
- bdnz 3b
-4:
-clear_bss:
- /*
- * Now clear BSS segment
- */
- lwz r3,GOT(__bss_start)
- lwz r4,GOT(_end)
-
- cmplw 0, r3, r4
- beq 6f
-
- li r0, 0
-5:
- stw r0, 0(r3)
- addi r3, r3, 4
- cmplw 0, r3, r4
- blt 5b
-6:
-
- mr r3, r9 /* Global Data pointer */
- mr r4, r10 /* Destination Address */
- bl board_init_r
-
- /*
- * Copy exception vector code to low memory
- *
- * r3: dest_addr
- * r7: source address, r8: end address, r9: target address
- */
- .globl trap_init
-trap_init:
- mflr r4 /* save link register */
- GET_GOT
- lwz r7, GOT(_start)
- lwz r8, GOT(_end_of_vectors)
-
- li r9, 0x100 /* reset vector always at 0x100 */
-
- cmplw 0, r7, r8
- bgelr /* return if r7>=r8 - just in case */
-1:
- lwz r0, 0(r7)
- stw r0, 0(r9)
- addi r7, r7, 4
- addi r9, r9, 4
- cmplw 0, r7, r8
- bne 1b
-
- /*
- * relocate `hdlr' and `int_return' entries
- */
- li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
- li r8, Alignment - _start + EXC_OFF_SYS_RESET
-2:
- bl trap_reloc
- addi r7, r7, 0x100 /* next exception vector */
- cmplw 0, r7, r8
- blt 2b
-
- li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
- bl trap_reloc
-
- li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
- bl trap_reloc
-
- li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
- li r8, SystemCall - _start + EXC_OFF_SYS_RESET
-3:
- bl trap_reloc
- addi r7, r7, 0x100 /* next exception vector */
- cmplw 0, r7, r8
- blt 3b
-
- li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
- li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
-4:
- bl trap_reloc
- addi r7, r7, 0x100 /* next exception vector */
- cmplw 0, r7, r8
- blt 4b
-
- mtlr r4 /* restore link register */
- blr
-
- /* Setup the BAT registers.
- */
-setup_bats:
- lis r4, CONFIG_SYS_IBAT0L@h
- ori r4, r4, CONFIG_SYS_IBAT0L@l
- lis r3, CONFIG_SYS_IBAT0U@h
- ori r3, r3, CONFIG_SYS_IBAT0U@l
- mtspr IBAT0L, r4
- mtspr IBAT0U, r3
- isync
-
- lis r4, CONFIG_SYS_DBAT0L@h
- ori r4, r4, CONFIG_SYS_DBAT0L@l
- lis r3, CONFIG_SYS_DBAT0U@h
- ori r3, r3, CONFIG_SYS_DBAT0U@l
- mtspr DBAT0L, r4
- mtspr DBAT0U, r3
- isync
-
- lis r4, CONFIG_SYS_IBAT1L@h
- ori r4, r4, CONFIG_SYS_IBAT1L@l
- lis r3, CONFIG_SYS_IBAT1U@h
- ori r3, r3, CONFIG_SYS_IBAT1U@l
- mtspr IBAT1L, r4
- mtspr IBAT1U, r3
- isync
-
- lis r4, CONFIG_SYS_DBAT1L@h
- ori r4, r4, CONFIG_SYS_DBAT1L@l
- lis r3, CONFIG_SYS_DBAT1U@h
- ori r3, r3, CONFIG_SYS_DBAT1U@l
- mtspr DBAT1L, r4
- mtspr DBAT1U, r3
- isync
-
- lis r4, CONFIG_SYS_IBAT2L@h
- ori r4, r4, CONFIG_SYS_IBAT2L@l
- lis r3, CONFIG_SYS_IBAT2U@h
- ori r3, r3, CONFIG_SYS_IBAT2U@l
- mtspr IBAT2L, r4
- mtspr IBAT2U, r3
- isync
-
- lis r4, CONFIG_SYS_DBAT2L@h
- ori r4, r4, CONFIG_SYS_DBAT2L@l
- lis r3, CONFIG_SYS_DBAT2U@h
- ori r3, r3, CONFIG_SYS_DBAT2U@l
- mtspr DBAT2L, r4
- mtspr DBAT2U, r3
- isync
-
- lis r4, CONFIG_SYS_IBAT3L@h
- ori r4, r4, CONFIG_SYS_IBAT3L@l
- lis r3, CONFIG_SYS_IBAT3U@h
- ori r3, r3, CONFIG_SYS_IBAT3U@l
- mtspr IBAT3L, r4
- mtspr IBAT3U, r3
- isync
-
- lis r4, CONFIG_SYS_DBAT3L@h
- ori r4, r4, CONFIG_SYS_DBAT3L@l
- lis r3, CONFIG_SYS_DBAT3U@h
- ori r3, r3, CONFIG_SYS_DBAT3U@l
- mtspr DBAT3L, r4
- mtspr DBAT3U, r3
- isync
-
- /* Invalidate TLBs.
- * -> for (val = 0; val < 0x20000; val+=0x1000)
- * -> tlbie(val);
- */
- lis r3, 0
- lis r5, 2
-
-1:
- tlbie r3
- addi r3, r3, 0x1000
- cmp 0, 0, r3, r5
- blt 1b
-
- blr