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| author | Jesper Nilsson <jesper.nilsson@axis.com> | 2007-11-30 17:20:00 +0100 |
|---|---|---|
| committer | Jesper Nilsson <jesper.nilsson@axis.com> | 2008-02-08 11:06:27 +0100 |
| commit | 3f50c0673cf5edd2c6bb76243410c3cd59b3b62d (patch) | |
| tree | 85bdd17d7c9828e47beb1d56595b3d3f136b6404 /arch/cris | |
| parent | a5d204bf368ed9f326d0ce46b47523a786203acb (diff) | |
| download | blackbird-op-linux-3f50c0673cf5edd2c6bb76243410c3cd59b3b62d.tar.gz blackbird-op-linux-3f50c0673cf5edd2c6bb76243410c3cd59b3b62d.zip | |
CRIS v32: Update boot/rescue/head.S code.
- Add ifdef for ETRAX_AXISFLASHMAP to avoid compiling file unless it is set.
- Use assembler macros for setting up clocks.
- Don't copy image, just jump to it (only works for NOR flash)
Diffstat (limited to 'arch/cris')
| -rw-r--r-- | arch/cris/arch-v32/boot/rescue/head.S | 42 |
1 files changed, 15 insertions, 27 deletions
diff --git a/arch/cris/arch-v32/boot/rescue/head.S b/arch/cris/arch-v32/boot/rescue/head.S index 8cdb4011bc16..5f846b7700a3 100644 --- a/arch/cris/arch-v32/boot/rescue/head.S +++ b/arch/cris/arch-v32/boot/rescue/head.S @@ -1,38 +1,26 @@ -/* $Id: head.S,v 1.4 2004/11/01 16:10:28 starvik Exp $ +/* + * Just get started by jumping to CONFIG_ETRAX_PTABLE_SECTOR to start + * kernel decompressor. + * + * In practice, this only works for NOR flash (or some convoluted RAM boot) + * and hence is not really useful for Artpec-3, so it's Etrax FS / NOR only. * - * This used to be the rescue code but now that is handled by the - * RedBoot based RFL instead. Nothing to see here, move along. */ -#include <asm/arch/hwregs/reg_map_asm.h> -#include <asm/arch/hwregs/config_defs_asm.h> +#include <mach/startup.inc> - .text +#ifdef CONFIG_ETRAX_AXISFLASHMAP - ;; Start clocks for used blocks. - move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1 - move.d [$r1], $r0 - or.d REG_STATE(config, rw_clk_ctrl, cpu, yes) | \ - REG_STATE(config, rw_clk_ctrl, bif, yes) | \ - REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0 - move.d $r0, [$r1] +;; Code - ;; Copy 68KB NAND flash to Internal RAM (if NAND boot) - move.d 0x38004000, $r10 - move.d 0x8000, $r11 - move.d 0x11000, $r12 - move.d copy_complete, $r13 - and.d 0x000fffff, $r13 - or.d 0x38000000, $r13 + .text +start: -#include "../../lib/nand_init.S" + ;; Start clocks for used blocks. + START_CLOCKS - ;; No NAND found move.d CONFIG_ETRAX_PTABLE_SECTOR, $r10 - jump $r10 ; Jump to decompresser + jump $r10 ; Jump to decompressor nop -copy_complete: - move.d 0x38000000 + CONFIG_ETRAX_PTABLE_SECTOR, $r10 - jump $r10 ; Jump to decompresser - nop +#endif |
