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authorJesper Nilsson <jesper.nilsson@axis.com>2007-11-30 17:20:00 +0100
committerJesper Nilsson <jesper.nilsson@axis.com>2008-02-08 11:06:27 +0100
commit3f50c0673cf5edd2c6bb76243410c3cd59b3b62d (patch)
tree85bdd17d7c9828e47beb1d56595b3d3f136b6404 /arch/cris
parenta5d204bf368ed9f326d0ce46b47523a786203acb (diff)
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.S42
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