arch/h8300/boot/compressed/head.S

   1 /*
   2  *  linux/arch/h8300/boot/compressed/head.S
   3  *
   4  *  Copyright (C) 2006 Yoshinori Sato
   5  */
   6
   7         .h8300h
   8 #include <linux/linkage.h>
   9
  10 #define SRAM_START 0xff4000
  11
  12         .section        .text..startup
  13         .global startup
  14 startup:
  15         mov.l   #SRAM_START+0x8000, sp
  16         mov.l   #__sbss, er0
  17         mov.l   #__ebss, er1
  18         sub.l   er0, er1
  19         shlr    er1
  20         shlr    er1
  21         sub.l   er2, er2
  22 1:
  23         mov.l   er2, @er0
  24         adds    #4, er0
  25         dec.l   #1, er1
  26         bne     1b
  27         jsr     @_decompress_kernel
  28         jmp     @0x400000
  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