u-boot-brain/arch/sh/lib/start.S
Marek Vasut 7de3ea8b98 sh: sh2: Remove CPU support
This CPU core is old, no boards using the CPU are left in mainline,
it has no prospects of ever being converted to DM, drop it.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: Yoshihiro Shimoda <shimoda.yoshihiro.uh@renesas.com>
2019-05-10 22:43:18 +02:00

61 lines
1.1 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2016 Vladimir Zapolskiy <vz@mleia.com>
* Copyright (C) 2007, 2010 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*/
#include <asm-offsets.h>
#include <config.h>
.text
.align 2
.global _start
_start:
mov.l ._lowlevel_init, r0
100: bsrf r0
nop
bsr 1f
nop
1: sts pr, r5
mov.l ._reloc_dst, r4
add #(_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
mov #0, r4
loop:
bra loop
.align 2
._lowlevel_init: .long (lowlevel_init - (100b + 4))
._reloc_dst: .long _start
._reloc_dst_end: .long reloc_dst_end
._bss_start: .long bss_start
._bss_end: .long bss_end
._gd_init: .long (_start - GENERATED_GBL_DATA_SIZE)
._stack_init: .long (_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
._sh_generic_init: .long board_init_f