diff options
Diffstat (limited to 'arch/nios2/cpu/start.S')
| -rw-r--r-- | arch/nios2/cpu/start.S | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S index 501ac39e3f..91e9c31b70 100644 --- a/arch/nios2/cpu/start.S +++ b/arch/nios2/cpu/start.S @@ -9,6 +9,15 @@ #include <config.h> #include <version.h> +/* + * icache and dcache configuration used only for start.S. + * the values are chosen so that it will work for all configuration. + */ +#define ICACHE_LINE_SIZE 32 /* fixed 32 */ +#define ICACHE_SIZE_MAX 0x10000 /* 64k max */ +#define DCACHE_LINE_SIZE_MIN 4 /* 4, 16, 32 */ +#define DCACHE_SIZE_MAX 0x10000 /* 64k max */ + /* RESTART */ .text .global _start @@ -22,9 +31,9 @@ _start: * just be invalidating the cache a second time. If cache * is not implemented initi behaves as nop. */ - ori r4, r0, %lo(CONFIG_SYS_ICACHELINE_SIZE) - movhi r5, %hi(CONFIG_SYS_ICACHE_SIZE) - ori r5, r5, %lo(CONFIG_SYS_ICACHE_SIZE) + ori r4, r0, %lo(ICACHE_LINE_SIZE) + movhi r5, %hi(ICACHE_SIZE_MAX) + ori r5, r5, %lo(ICACHE_SIZE_MAX) 0: initi r5 sub r5, r5, r4 bgt r5, r0, 0b @@ -51,10 +60,9 @@ _except_end: * DCACHE INIT -- if dcache not implemented, initd behaves as * nop. */ - movhi r4, %hi(CONFIG_SYS_DCACHELINE_SIZE) - ori r4, r4, %lo(CONFIG_SYS_DCACHELINE_SIZE) - movhi r5, %hi(CONFIG_SYS_DCACHE_SIZE) - ori r5, r5, %lo(CONFIG_SYS_DCACHE_SIZE) + ori r4, r0, %lo(DCACHE_LINE_SIZE_MIN) + movhi r5, %hi(DCACHE_SIZE_MAX) + ori r5, r5, %lo(DCACHE_SIZE_MAX) mov r6, r0 1: initd 0(r6) add r6, r6, r4 |
