[MIPS] Fix dcache_status()

You can't judge UNCACHED by Config.K0 LSB.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>

diff --git a/cpu/mips/cache.S b/cpu/mips/cache.S
index bb42616926e3a2dd74a2e39615182e63fc169364..e6f31751bfff9870fd473dee8d0af04e67124596 100644 (file)
--- a/cpu/mips/cache.S
+++ b/cpu/mips/cache.S
@@ -256,9 +256,13 @@ NESTED(mips_cache_reset, 0, ra)
 *
 */
 LEAF(dcache_status)
-       mfc0    v0, CP0_CONFIG
-       andi    v0, v0, 1
-       j       ra
+       mfc0    t0, CP0_CONFIG
+       li      t1, CONF_CM_UNCACHED
+       andi    t0, t0, CONF_CM_CMASK
+       move    v0, zero
+       beq     t0, t1, 2f
+       li      v0, 1
+2:     jr      ra
        END(dcache_status)
 
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