arch/cris/arch-v32/boot/rescue/head.S

   1 /* $Id: head.S,v 1.4 2004/11/01 16:10:28 starvik Exp $
   2  *
   3  * This used to be the rescue code but now that is handled by the
   4  * RedBoot based RFL instead. Nothing to see here, move along.
   5  */
   6
   7 #include <asm/arch/hwregs/reg_map_asm.h>
   8 #include <asm/arch/hwregs/config_defs_asm.h>
   9
  10         .text
  11
  12         ;; Start clocks for used blocks.
  13         move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1
  14         move.d [$r1], $r0
  15         or.d   REG_STATE(config, rw_clk_ctrl, cpu, yes) | \
  16                REG_STATE(config, rw_clk_ctrl, bif, yes) | \
  17                REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0
  18         move.d $r0, [$r1]
  19
  20         ;; Copy 68KB NAND flash to Internal RAM (if NAND boot)
  21         move.d 0x38004000, $r10
  22         move.d 0x8000, $r11
  23         move.d 0x11000, $r12
  24         move.d copy_complete, $r13
  25         and.d  0x000fffff, $r13
  26         or.d   0x38000000, $r13
  27
  28 #include "../../lib/nand_init.S"
  29
  30         ;; No NAND found
  31         move.d  CONFIG_ETRAX_PTABLE_SECTOR, $r10
  32         jump    $r10 ; Jump to decompresser
  33         nop
  34
  35 copy_complete:
  36         move.d  0x38000000 + CONFIG_ETRAX_PTABLE_SECTOR, $r10
  37         jump    $r10 ; Jump to decompresser
  38         nop