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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/arch/sh/cpu/sh2/start.S | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/arch/sh/cpu/sh2/start.S')
| -rw-r--r-- | roms/u-boot/arch/sh/cpu/sh2/start.S | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/roms/u-boot/arch/sh/cpu/sh2/start.S b/roms/u-boot/arch/sh/cpu/sh2/start.S new file mode 100644 index 00000000..5b92a015 --- /dev/null +++ b/roms/u-boot/arch/sh/cpu/sh2/start.S @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * Copyright (C) 2008 Renesas Solutions Corp. + + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm-offsets.h> +#include <config.h> +#include <version.h> + + .text + .align 2 + + .global _start +_sh_start: + .long 0x00000010 /* Ppower ON reset PC*/ + .long 0x00000000 + .long 0x00000010 /* Manual reset PC */ + .long 0x00000000 +_init: + mov.l ._lowlevel_init, r0 +100: bsrf r0 + nop + bsr 1f + nop +1: sts pr, r5 + mov.l ._reloc_dst, r4 + add #(_sh_start-1b), r5 + mov.l ._reloc_dst_end, r6 + +2: mov.l @r5+, r1 + mov.l r1, @r4 + add #4, r4 + cmp/hs r6, r4 + bf 2b + + mov.l ._bss_start, r4 + mov.l ._bss_end, r5 + mov #0, r1 + +3: mov.l r1, @r4 /* bss clear */ + add #4, r4 + cmp/hs r5, r4 + bf 3b + + mov.l ._gd_init, r13 /* global data */ + mov.l ._stack_init, r15 /* stack */ + + mov.l ._sh_generic_init, r0 + jsr @r0 + nop + +loop: + bra loop + + .align 2 + +._lowlevel_init: .long (lowlevel_init - (100b + 4)) +._reloc_dst: .long reloc_dst +._reloc_dst_end: .long reloc_dst_end +._bss_start: .long bss_start +._bss_end: .long bss_end +._gd_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE) +._stack_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) +._sh_generic_init: .long sh_generic_init |