diff options
Diffstat (limited to 'arch/mips/lib')
| -rw-r--r-- | arch/mips/lib/cache_init.S | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/arch/mips/lib/cache_init.S b/arch/mips/lib/cache_init.S index 2e036d9b97..dc207a6a1c 100644 --- a/arch/mips/lib/cache_init.S +++ b/arch/mips/lib/cache_init.S @@ -47,28 +47,28 @@ #endif .endm + .macro cache_loop curr, end, line_sz, op +10: cache \op, 0(\curr) + PTR_ADDU \curr, \curr, \line_sz + bne \curr, \end, 10b + .endm + /* * mips_init_icache(uint PRId, ulong icache_size, unchar icache_linesz) */ LEAF(mips_init_icache) blez a1, 9f mtc0 zero, CP0_TAGLO - /* clear tag to invalidate */ PTR_LI t0, INDEX_BASE PTR_ADDU t1, t0, a1 -1: cache INDEX_STORE_TAG_I, 0(t0) - PTR_ADDU t0, a2 - bne t0, t1, 1b + /* clear tag to invalidate */ + cache_loop t0, t1, a2, INDEX_STORE_TAG_I /* fill once, so data field parity is correct */ PTR_LI t0, INDEX_BASE -2: cache FILL, 0(t0) - PTR_ADDU t0, a2 - bne t0, t1, 2b + cache_loop t0, t1, a2, FILL /* invalidate again - prudent but not strictly neccessary */ PTR_LI t0, INDEX_BASE -1: cache INDEX_STORE_TAG_I, 0(t0) - PTR_ADDU t0, a2 - bne t0, t1, 1b + cache_loop t0, t1, a2, INDEX_STORE_TAG_I 9: jr ra END(mips_init_icache) @@ -78,12 +78,10 @@ LEAF(mips_init_icache) LEAF(mips_init_dcache) blez a1, 9f mtc0 zero, CP0_TAGLO - /* clear all tags */ PTR_LI t0, INDEX_BASE PTR_ADDU t1, t0, a1 -1: cache INDEX_STORE_TAG_D, 0(t0) - PTR_ADDU t0, a2 - bne t0, t1, 1b + /* clear all tags */ + cache_loop t0, t1, a2, INDEX_STORE_TAG_D /* load from each line (in cached space) */ PTR_LI t0, INDEX_BASE 2: LONG_L zero, 0(t0) @@ -91,9 +89,7 @@ LEAF(mips_init_dcache) bne t0, t1, 2b /* clear all tags */ PTR_LI t0, INDEX_BASE -1: cache INDEX_STORE_TAG_D, 0(t0) - PTR_ADDU t0, a2 - bne t0, t1, 1b + cache_loop t0, t1, a2, INDEX_STORE_TAG_D 9: jr ra END(mips_init_dcache) |