diff options
Diffstat (limited to 'arch/ppc/kernel/relocate_kernel.S')
| -rw-r--r-- | arch/ppc/kernel/relocate_kernel.S | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/arch/ppc/kernel/relocate_kernel.S b/arch/ppc/kernel/relocate_kernel.S deleted file mode 100644 index 9b2ad48e988c..000000000000 --- a/arch/ppc/kernel/relocate_kernel.S +++ /dev/null @@ -1,123 +0,0 @@ -/* - * relocate_kernel.S - put the kernel image in place to boot - * Copyright (C) 2002-2003 Eric Biederman <ebiederm@xmission.com> - * - * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz - * - * This source code is licensed under the GNU General Public License, - * Version 2. See the file COPYING for more details. - */ - -#include <asm/reg.h> -#include <asm/ppc_asm.h> -#include <asm/processor.h> - -#include <asm/kexec.h> - -#define PAGE_SIZE 4096 /* must be same value as in <asm/page.h> */ - - /* - * Must be relocatable PIC code callable as a C function. - */ - .globl relocate_new_kernel -relocate_new_kernel: - /* r3 = page_list */ - /* r4 = reboot_code_buffer */ - /* r5 = start_address */ - - li r0, 0 - - /* - * Set Machine Status Register to a known status, - * switch the MMU off and jump to 1: in a single step. - */ - - mr r8, r0 - ori r8, r8, MSR_RI|MSR_ME - mtspr SPRN_SRR1, r8 - addi r8, r4, 1f - relocate_new_kernel - mtspr SPRN_SRR0, r8 - sync - rfi - -1: - /* from this point address translation is turned off */ - /* and interrupts are disabled */ - - /* set a new stack at the bottom of our page... */ - /* (not really needed now) */ - addi r1, r4, KEXEC_CONTROL_CODE_SIZE - 8 /* for LR Save+Back Chain */ - stw r0, 0(r1) - - /* Do the copies */ - li r6, 0 /* checksum */ - mr r0, r3 - b 1f - -0: /* top, read another word for the indirection page */ - lwzu r0, 4(r3) - -1: - /* is it a destination page? (r8) */ - rlwinm. r7, r0, 0, 31, 31 /* IND_DESTINATION (1<<0) */ - beq 2f - - rlwinm r8, r0, 0, 0, 19 /* clear kexec flags, page align */ - b 0b - -2: /* is it an indirection page? (r3) */ - rlwinm. r7, r0, 0, 30, 30 /* IND_INDIRECTION (1<<1) */ - beq 2f - - rlwinm r3, r0, 0, 0, 19 /* clear kexec flags, page align */ - subi r3, r3, 4 - b 0b - -2: /* are we done? */ - rlwinm. r7, r0, 0, 29, 29 /* IND_DONE (1<<2) */ - beq 2f - b 3f - -2: /* is it a source page? (r9) */ - rlwinm. r7, r0, 0, 28, 28 /* IND_SOURCE (1<<3) */ - beq 0b - - rlwinm r9, r0, 0, 0, 19 /* clear kexec flags, page align */ - - li r7, PAGE_SIZE / 4 - mtctr r7 - subi r9, r9, 4 - subi r8, r8, 4 -9: - lwzu r0, 4(r9) /* do the copy */ - xor r6, r6, r0 - stwu r0, 4(r8) - dcbst 0, r8 - sync - icbi 0, r8 - bdnz 9b - - addi r9, r9, 4 - addi r8, r8, 4 - b 0b - -3: - - /* To be certain of avoiding problems with self-modifying code - * execute a serializing instruction here. - */ - isync - sync - - /* jump to the entry point, usually the setup routine */ - mtlr r5 - blrl - -1: b 1b - -relocate_new_kernel_end: - - .globl relocate_new_kernel_size -relocate_new_kernel_size: - .long relocate_new_kernel_end - relocate_new_kernel - |