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added cp15 macros

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This commit is contained in:
Dave Murphy 2005-07-22 10:42:15 +00:00
parent 38989ba9fe
commit 1dbfb52fd3
1 changed files with 13 additions and 1 deletions
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14
dkarm/crtls/ds_arm9_crt0.s
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@ -20,6 +20,18 @@
#define PAGE_2G (0b11110 << 1)
#define PAGE_4G (0b11111 << 1)
#define ITCM_LOAD (1<<19)
#define ITCM_ENABLE (1<<18)
#define DTCM_LOAD (1<<17)
#define DTCM_ENABLE (1<<16)
#define DISABLE_TBIT (1<<15)
#define ROUND_ROBIN (1<<14)
#define ALT_VECTORS (1<<13)
#define ICACHE_ENABLE (1<<12)
#define BIG_ENDIAN (1<<7)
#define DCACHE_ENABLE (1<<2)
#define PROTECT_ENABLE (1<<0)
@---------------------------------------------------------------------------------
.section ".init"
.global _start
@ -133,7 +145,7 @@ _start:
@ Enable ICache, DCache, ITCM & DTCM
@-------------------------------------------------------------------------
mrc p15, 0, r0, c1, c0, 0
ldr r1,=0x55005
ldr r1,= ITCM_ENABLE | DTCM_ENABLE | ICACHE_ENABLE | DCACHE_ENABLE | PROTECT_ENABLE
orr r0,r0,r1
mcr p15, 0, r0, c1, c0, 0