It is easy to note that SH2/SH3/SH4 start.S code is practically the same with a minor difference for SH2 where a short data header is present. To avoid unwanted code duplication and to automatically convert SH2 and SH3 platforms to generic board support move fixed SH4 start.S into arch/sh/lib/start.S and share it among all platforms. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>master
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/* |
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* Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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* Copyright (C) 2008 Renesas Solutions Corp. |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <asm-offsets.h> |
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#include <config.h> |
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.text |
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.align 2
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.global _start
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_sh_start: |
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.long 0x00000010 /* Ppower ON reset PC*/ |
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.long 0x00000000
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.long 0x00000010 /* Manual reset PC */ |
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.long 0x00000000
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_init: |
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mov.l ._lowlevel_init, r0 |
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100: bsrf r0 |
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nop |
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bsr 1f |
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nop |
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1: sts pr, r5 |
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mov.l ._reloc_dst, r4 |
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add #(_sh_start-1b), r5 |
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mov.l ._reloc_dst_end, r6 |
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2: mov.l @r5+, r1
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mov.l r1, @r4
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add #4, r4 |
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cmp/hs r6, r4 |
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bf 2b |
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mov.l ._bss_start, r4 |
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mov.l ._bss_end, r5 |
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mov #0, r1 |
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3: mov.l r1, @r4 /* bss clear */
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add #4, r4 |
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cmp/hs r5, r4 |
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bf 3b |
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mov.l ._gd_init, r13 /* global data */ |
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mov.l ._stack_init, r15 /* stack */ |
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#TODO(sh maintainer): Fix this up to call the correct code |
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#mov.l ._sh_generic_init, r0 |
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#jsr @r0
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nop |
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loop: |
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bra loop |
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.align 2
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._lowlevel_init: .long (lowlevel_init - (100b + 4)) |
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._reloc_dst: .long reloc_dst
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._reloc_dst_end: .long reloc_dst_end
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._bss_start: .long bss_start
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._bss_end: .long bss_end
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._gd_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE) |
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._stack_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) |
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#._sh_generic_init: .long sh_generic_init
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@ -1,65 +0,0 @@ |
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/* |
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* (C) Copyright 2007 |
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* Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
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* |
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* (C) Copyright 2007 |
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* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <asm-offsets.h> |
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#include <config.h> |
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.text |
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.align 2
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.global _start
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_sh_start: |
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mov.l ._lowlevel_init, r0 |
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100: bsrf r0 |
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nop |
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bsr 1f |
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nop |
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1: sts pr, r5 |
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mov.l ._reloc_dst, r4 |
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add #(_sh_start-1b), r5 |
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mov.l ._reloc_dst_end, r6 |
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2: mov.l @r5+, r1
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mov.l r1, @r4
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add #4, r4 |
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cmp/hs r6, r4 |
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bf 2b |
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mov.l ._bss_start, r4 |
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mov.l ._bss_end, r5 |
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mov #0, r1 |
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3: mov.l r1, @r4 /* bss clear */
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add #4, r4 |
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cmp/hs r5, r4 |
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bf 3b |
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mov.l ._gd_init, r13 /* global data */ |
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mov.l ._stack_init, r15 /* stack */ |
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#TODO(sh maintainer): Fix this up to call the correct code |
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#mov.l ._sh_generic_init, r0 |
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#jsr @r0
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nop |
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loop: |
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bra loop |
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.align 2
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._lowlevel_init: .long (lowlevel_init - (100b + 4)) |
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._reloc_dst: .long reloc_dst
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._reloc_dst_end: .long reloc_dst_end
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._bss_start: .long bss_start
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._bss_end: .long bss_end
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._gd_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE) |
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._stack_init: .long (_sh_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) |
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#._sh_generic_init: .long sh_generic_init
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