sh: share the correct version of start.S among all cpus
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>
This commit is contained in:
parent
9c141b2bd7
commit
3500581ef3
|
@ -2,7 +2,7 @@
|
||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
head-y := arch/sh/cpu/$(CPU)/start.o
|
head-y := arch/sh/lib/start.o
|
||||||
|
|
||||||
libs-y += arch/sh/cpu/$(CPU)/
|
libs-y += arch/sh/cpu/$(CPU)/
|
||||||
libs-y += arch/sh/lib/
|
libs-y += arch/sh/lib/
|
||||||
|
|
|
@ -8,5 +8,4 @@
|
||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
extra-y = start.o
|
|
||||||
obj-y = cpu.o interrupts.o watchdog.o
|
obj-y = cpu.o interrupts.o watchdog.o
|
||||||
|
|
|
@ -1,66 +0,0 @@
|
||||||
/*
|
|
||||||
* 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>
|
|
||||||
|
|
||||||
.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 */
|
|
||||||
|
|
||||||
#TODO(sh maintainer): Fix this up to call the correct code
|
|
||||||
#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
|
|
|
@ -11,5 +11,4 @@
|
||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
extra-y = start.o
|
|
||||||
obj-y = cpu.o interrupts.o watchdog.o
|
obj-y = cpu.o interrupts.o watchdog.o
|
||||||
|
|
|
@ -1,65 +0,0 @@
|
||||||
/*
|
|
||||||
* (C) Copyright 2007
|
|
||||||
* Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
|
|
||||||
*
|
|
||||||
* (C) Copyright 2007
|
|
||||||
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
|
|
||||||
*
|
|
||||||
* SPDX-License-Identifier: GPL-2.0+
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <asm-offsets.h>
|
|
||||||
#include <config.h>
|
|
||||||
|
|
||||||
.text
|
|
||||||
.align 2
|
|
||||||
|
|
||||||
.global _start
|
|
||||||
_sh_start:
|
|
||||||
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 */
|
|
||||||
|
|
||||||
#TODO(sh maintainer): Fix this up to call the correct code
|
|
||||||
#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
|
|
|
@ -8,5 +8,4 @@
|
||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
extra-y = start.o
|
|
||||||
obj-y = cpu.o interrupts.o watchdog.o cache.o
|
obj-y = cpu.o interrupts.o watchdog.o cache.o
|
||||||
|
|
|
@ -5,6 +5,8 @@
|
||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
|
extra-y += start.o
|
||||||
|
|
||||||
obj-y += board.o
|
obj-y += board.o
|
||||||
obj-$(CONFIG_CMD_BOOTM) += bootm.o
|
obj-$(CONFIG_CMD_BOOTM) += bootm.o
|
||||||
ifeq ($(CONFIG_CPU_SH2),y)
|
ifeq ($(CONFIG_CPU_SH2),y)
|
||||||
|
|
|
@ -13,6 +13,12 @@
|
||||||
|
|
||||||
.global _start
|
.global _start
|
||||||
_start:
|
_start:
|
||||||
|
#ifdef CONFIG_CPU_SH2
|
||||||
|
.long 0x00000010 /* Ppower ON reset PC*/
|
||||||
|
.long 0x00000000
|
||||||
|
.long 0x00000010 /* Manual reset PC */
|
||||||
|
.long 0x00000000
|
||||||
|
#endif
|
||||||
mov.l ._lowlevel_init, r0
|
mov.l ._lowlevel_init, r0
|
||||||
100: bsrf r0
|
100: bsrf r0
|
||||||
nop
|
nop
|
Loading…
Reference in New Issue