1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2016 Vladimir Zapolskiy <vz (at) mleia.com> 4 * Copyright (C) 2007, 2010 Nobuhiro Iwamatsu <iwamatsu (at) nigauri.org> 5 */ 6 7 #include <asm-offsets.h> 8 #include <config.h> 9 10 .text 11 .align 2 12 13 .global _start 14 _start: 15 #ifdef CONFIG_CPU_SH2 16 .long 0x00000010 /* Ppower ON reset PC*/ 17 .long 0x00000000 18 .long 0x00000010 /* Manual reset PC */ 19 .long 0x00000000 20 #endif 21 mov.l ._lowlevel_init, r0 22 100: bsrf r0 23 nop 24 25 bsr 1f 26 nop 27 1: sts pr, r5 28 mov.l ._reloc_dst, r4 29 add #(_start-1b), r5 30 mov.l ._reloc_dst_end, r6 31 32 2: mov.l @r5+, r1 33 mov.l r1, @r4 34 add #4, r4 35 cmp/hs r6, r4 36 bf 2b 37 38 mov.l ._bss_start, r4 39 mov.l ._bss_end, r5 40 mov #0, r1 41 42 3: mov.l r1, @r4 /* bss clear */ 43 add #4, r4 44 cmp/hs r5, r4 45 bf 3b 46 47 mov.l ._gd_init, r13 /* global data */ 48 mov.l ._stack_init, r15 /* stack */ 49 50 mov.l ._sh_generic_init, r0 51 jsr @r0 52 mov #0, r4 53 54 loop: 55 bra loop 56 57 .align 2 58 59 ._lowlevel_init: .long (lowlevel_init - (100b + 4)) 60 ._reloc_dst: .long _start 61 ._reloc_dst_end: .long reloc_dst_end 62 ._bss_start: .long bss_start 63 ._bss_end: .long bss_end 64 ._gd_init: .long (_start - GENERATED_GBL_DATA_SIZE) 65 ._stack_init: .long (_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) 66 ._sh_generic_init: .long board_init_f 67
