diff options
| -rw-r--r-- | src/arch/ppc/init/Config.lb | 2 | ||||
| -rw-r--r-- | src/arch/ppc/init/crt0.S.lb | 66 |
2 files changed, 68 insertions, 0 deletions
diff --git a/src/arch/ppc/init/Config.lb b/src/arch/ppc/init/Config.lb new file mode 100644 index 0000000000..fcda384bb6 --- /dev/null +++ b/src/arch/ppc/init/Config.lb @@ -0,0 +1,2 @@ +init crt0.S.lb +#initobject stuff.o diff --git a/src/arch/ppc/init/crt0.S.lb b/src/arch/ppc/init/crt0.S.lb new file mode 100644 index 0000000000..2f26f0ea34 --- /dev/null +++ b/src/arch/ppc/init/crt0.S.lb @@ -0,0 +1,66 @@ +/* $Id$ */ +/* Copyright 2000 AG Electronics Ltd. */ +/* This code is distributed without warranty under the GPL v2 (see COPYING) */ + +#define ASM +#include "ppcreg.h" +#include <ppc_asm.tmpl> + +.section ".rom.data", "a", @progbits +.section ".rom.text", "ax", @progbits + +.globl _start +.type _start, @function +.globl __bss_end +.globl __start_address_check + + /* + * Locate at hreset vector + */ + .space (0x100) + +_start: + b system_reset + + /* + * Space for exception table + */ + .space (0x3000) + +system_reset: + +%%EARLY_INIT%% + +start_payload: + /* + * Relocate payload (text & data) to ram + */ + lis r3, _liseg@ha + addi r3, r3, _liseg@l + lis r4, _iseg@ha + addi r4, r4, _iseg@l + + /* + * Skip if they're the same + */ + cmp 0, 0, r3, r4 + beq 1f + + lis r7, _eliseg@ha + addi r7, r7, _eliseg@l + +2: + lwzx r5, 0, r3 + stwx r5, 0, r4 + addi r3, r3, 4 + addi r4, r4, 4 + cmp 0, 0, r3, r7 + ble 2b + +1: + /* + * Start payload + */ + b _iseg + +%%NORTHBRIDGE_INIT%% |