root/arch/h8300/boot/compressed/head.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  linux/arch/h8300/boot/compressed/head.S
   4  *
   5  *  Copyright (C) 2006 Yoshinori Sato
   6  */
   7 
   8 #include <linux/linkage.h>
   9 
  10         .section        .text..startup,"ax"
  11         .global startup
  12 startup:
  13         mov.l   #startup, sp
  14         mov.l   er0, er4
  15         mov.l   #__sbss, er0
  16         mov.l   #__ebss, er1
  17         sub.l   er0, er1
  18         shlr    er1
  19         shlr    er1
  20         sub.l   er2, er2
  21 1:
  22         mov.l   er2, @er0
  23         adds    #4, er0
  24         dec.l   #1, er1
  25         bne     1b
  26         jsr     @decompress_kernel
  27         mov.l   er4, er0
  28         jmp     @output
  29 
  30         .align  9
  31 fake_headers_as_bzImage:
  32         .word   0
  33         .ascii  "HdrS"          ; header signature
  34         .word   0x0202          ; header version number (>= 0x0105)
  35                                 ; or else old loadlin-1.5 will fail)
  36         .word   0               ; default_switch
  37         .word   0               ; SETUPSEG
  38         .word   0x1000
  39         .word   0               ; pointing to kernel version string
  40         .byte   0               ; = 0, old one (LILO, Loadlin,
  41                                 ; 0xTV: T=0 for LILO
  42                                 ;       V = version
  43         .byte   1               ; Load flags bzImage=1
  44         .word   0x8000          ; size to move, when setup is not
  45         .long   0x100000        ; 0x100000 = default for big kernel
  46         .long   0               ; address of loaded ramdisk image
  47         .long   0               ; its size in bytes
  48 
  49         .end