X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Fmips%2Flib%2Fcache_init.S;h=137d7283ffefb1f81a60b81fbfb5c559f798787e;hb=a0573d19885236ba03d412f7788104f75f0dea64;hp=04a36b2528849459ed62f9094db4137d4d4799cb;hpb=dd7c72006e51f0d27e5cb1dcf60d5b9bf307565e;p=oweals%2Fu-boot.git

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 */