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Jesper Nilsson
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Feb 8, 2008
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refs/heads/master: a5d204bf368ed9f326d0ce46b47523a786203acb | ||
refs/heads/master: 3f50c0673cf5edd2c6bb76243410c3cd59b3b62d |
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/* $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. | ||
*/ | ||
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#include <asm/arch/hwregs/reg_map_asm.h> | ||
#include <asm/arch/hwregs/config_defs_asm.h> | ||
#include <mach/startup.inc> | ||
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.text | ||
#ifdef CONFIG_ETRAX_AXISFLASHMAP | ||
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;; 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 | ||
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;; 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: | ||
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#include "../../lib/nand_init.S" | ||
;; Start clocks for used blocks. | ||
START_CLOCKS | ||
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;; No NAND found | ||
move.d CONFIG_ETRAX_PTABLE_SECTOR, $r10 | ||
jump $r10 ; Jump to decompresser | ||
jump $r10 ; Jump to decompressor | ||
nop | ||
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copy_complete: | ||
move.d 0x38000000 + CONFIG_ETRAX_PTABLE_SECTOR, $r10 | ||
jump $r10 ; Jump to decompresser | ||
nop | ||
#endif |