81 lines
1.5 KiB
ArmAsm
81 lines
1.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2016 Vladimir Zapolskiy <vz@mleia.com>
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* Copyright (C) 2007, 2010 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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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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_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 #(_start-1b), r5
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mov.l ._reloc_dst_end, r6
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#ifdef CONFIG_OF_SEPARATE
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mov.l ._reloc_size, r0
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add r5, r0
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add #4, r0
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mov.l @r0, r0
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swap.b r0, r0
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swap.w r0, r0
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swap.b r0, r0
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add #4, r0
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add r0, r6
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#endif
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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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#ifndef CONFIG_OF_SEPARATE
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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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#endif
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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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#if CONFIG_VAL(SYS_MALLOC_F_LEN)
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mov.l ._gd_malloc_base, r14
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mov.l r15, @r14
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#endif
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mov.l ._sh_generic_init, r0
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jsr @r0
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mov #0, r4
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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 _start
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._reloc_dst_end: .long reloc_dst_end
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._reloc_size: .long (_end - _start)
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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 (_start - GENERATED_GBL_DATA_SIZE)
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#if CONFIG_VAL(SYS_MALLOC_F_LEN)
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._gd_malloc_base: .long (_start - GENERATED_GBL_DATA_SIZE + GD_MALLOC_BASE)
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#endif
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._stack_init: .long (_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
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._sh_generic_init: .long board_init_f
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