diff --git a/arch/mips/lib/cache_init.S b/arch/mips/lib/cache_init.S index 04a36b2528..137d7283ff 100644 --- a/arch/mips/lib/cache_init.S +++ b/arch/mips/lib/cache_init.S @@ -138,6 +138,14 @@ LEAF(mips_cache_reset) #endif /* CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD */ + /* + * The TagLo registers used depend upon the CPU implementation, but the + * architecture requires that it is safe for software to write to both + * TagLo selects 0 & 2 covering supported cases. + */ + mtc0 zero, CP0_TAGLO + mtc0 zero, CP0_TAGLO, 2 + /* * The caches are probably in an indeterminate state, so we force good * parity into them by doing an invalidate for each line. If @@ -151,7 +159,6 @@ LEAF(mips_cache_reset) * Initialize the I-cache first, */ blez t2, 1f - mtc0 zero, CP0_TAGLO PTR_LI t0, INDEX_BASE PTR_ADDU t1, t0, t2 /* clear tag to invalidate */ @@ -169,7 +176,6 @@ LEAF(mips_cache_reset) * then initialize D-cache. */ 1: blez t3, 3f - mtc0 zero, CP0_TAGLO PTR_LI t0, INDEX_BASE PTR_ADDU t1, t0, t3 /* clear all tags */