43 lines
1007 B
ArmAsm
43 lines
1007 B
ArmAsm
|
/*
|
||
|
|
* File : cache_init.S
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2010-05-17 swkyer first version
|
||
|
|
*/
|
||
|
|
#include "../common/mips.inc"
|
||
|
|
#include "../common/mipsregs.h"
|
||
|
|
#include "../common/stackframe.h"
|
||
|
|
|
||
|
|
.text
|
||
|
|
.set noreorder
|
||
|
|
|
||
|
|
.globl cache_init
|
||
|
|
.ent cache_init
|
||
|
|
cache_init:
|
||
|
|
.set noreorder
|
||
|
|
mtc0 zero, CP0_TAGLO
|
||
|
|
move t0, a0 // cache total size
|
||
|
|
move t1, a1 // cache line size
|
||
|
|
li t2, 0x80000000
|
||
|
|
addu t3, t0, t2
|
||
|
|
|
||
|
|
_cache_init_loop:
|
||
|
|
cache 8, 0(t2) // icache_index_store_tag
|
||
|
|
cache 9, 0(t2) // dcache_index_store_tag
|
||
|
|
addu t2, t1
|
||
|
|
bne t2, t3, _cache_init_loop
|
||
|
|
nop
|
||
|
|
|
||
|
|
mfc0 t0, CP0_CONFIG
|
||
|
|
li t1, 0x7
|
||
|
|
not t1
|
||
|
|
and t0, t0, t1
|
||
|
|
or t0, 0x3 // cacheable, noncoherent, write-back, write allocate
|
||
|
|
mtc0 t0, CP0_CONFIG
|
||
|
|
|
||
|
|
jr ra
|
||
|
|
nop
|
||
|
|
|
||
|
|
.set reorder
|
||
|
|
.end cache_init
|