LXR uboot/arch/sh/lib/start.S

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Copyright (C) 2016 Vladimir Zapolskiy <vz@mleia.com>
   4 * Copyright (C) 2007, 2010 Nobuhiro Iwamatsu <iwamatsu@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        mov.l   ._lowlevel_init, r0
  16100:    bsrf    r0
  17        nop
  18
  19        bsr     1f
  20        nop
  211:      sts     pr, r5
  22        mov.l   ._reloc_dst, r4
  23        add     #(_start-1b), r5
  24        mov.l   ._reloc_dst_end, r6
  25#ifdef CONFIG_OF_SEPARATE
  26        mov.l   ._reloc_size, r0
  27        add     r5, r0
  28        add     #4, r0
  29        mov.l   @r0, r0
  30        swap.b  r0, r0
  31        swap.w  r0, r0
  32        swap.b  r0, r0
  33        add     #4, r0
  34        add     r0, r6
  35#endif
  36
  372:      mov.l   @r5+, r1
  38        mov.l   r1, @r4
  39        add     #4, r4
  40        cmp/hs  r6, r4
  41        bf      2b
  42
  43#ifndef CONFIG_OF_SEPARATE
  44        mov.l   ._bss_start, r4
  45        mov.l   ._bss_end, r5
  46        mov     #0, r1
  47
  483:      mov.l   r1, @r4                 /* bss clear */
  49        add     #4, r4
  50        cmp/hs  r5, r4
  51        bf      3b
  52#endif
  53
  54        mov.l   ._gd_init, r13          /* global data */
  55        mov.l   ._stack_init, r15       /* stack */
  56
  57        mov.l   ._sh_generic_init, r0
  58        jsr     @r0
  59        mov     #0, r4
  60
  61loop:
  62        bra     loop
  63
  64        .align  2
  65
  66._lowlevel_init:        .long   (lowlevel_init - (100b + 4))
  67._reloc_dst:            .long   _start
  68._reloc_dst_end:        .long   reloc_dst_end
  69._reloc_size:           .long   (_end - _start)
  70._bss_start:            .long   bss_start
  71._bss_end:              .long   bss_end
  72._gd_init:              .long   (_start - GENERATED_GBL_DATA_SIZE)
  73._stack_init:           .long   (_start - GENERATED_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
  74._sh_generic_init:      .long   board_init_f
  75