armv7: move armv7_invalidate_caches() to cache.c

This just moves cache maintenance stuff from the armv7 bootblock
code to cache.c

Change-Id: I0b3ab58a1d8a3fe3d9568e02e156a36b6f33ca0b
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2867
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

src/arch/armv7/bootblock_simple.c

@@ -28,58 +28,6 @@
 
 #include "stages.c"
 
-static void armv7_invalidate_caches(void)
-{
-	uint32_t clidr;
-	int level;
-
-	/* Invalidate branch predictor */
-	bpiall();
-
-	/* Iterate thru each cache identified in CLIDR and invalidate */
-	clidr = read_clidr();
-	for (level = 0; level < 7; level++) {
-		unsigned int ctype = (clidr >> (level * 3)) & 0x7;
-		uint32_t csselr;
-
-		switch(ctype) {
-		case 0x0:
-			/* no cache */
-			break;
-		case 0x1:
-			/* icache only */
-			csselr = (level << 1) | 1;
-			write_csselr(csselr);
-			icache_invalidate_all();
-			break;
-		case 0x2:
-		case 0x4:
-			/* dcache only or unified cache */
-			dcache_invalidate_all();
-			break;
-		case 0x3:
-			/* separate icache and dcache */
-			csselr = (level << 1) | 1;
-			write_csselr(csselr);
-			icache_invalidate_all();
-
-			csselr = level < 1;
-			write_csselr(csselr);
-			dcache_invalidate_all();
-			break;
-		default:
-			/* reserved */
-			break;
-		}
-	}
-
-	/* Invalidate TLB */
-	/* FIXME: ARMv7 Architecture Ref. Manual claims that the distinction
-	 * instruction vs. data TLBs is deprecated in ARMv7. But that doesn't
-	 * really seem true for Cortex-A15? */
-	tlb_invalidate_all();
-}
-
 static int boot_cpu(void)
 {
 	/*

src/arch/armv7/include/arch/cache.h

@@ -225,6 +225,9 @@ void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len);
 /* invalidate entire icache on current level (given by CSSELR) */
 void icache_invalidate_all(void);
 
+/* invalidate all caches on ARMv7 */
+void armv7_invalidate_caches(void);
+
 /* MMU setup by machine virtual address */
 void mmu_setup_by_mva(unsigned long start, unsigned long size);
 

src/arch/armv7/lib/cache.c

@@ -170,6 +170,55 @@ void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len)
 		dccimvac(addr);
 }
 
+void armv7_invalidate_caches(void)
+{
+	uint32_t clidr;
+	int level;
+
+	/* Invalidate branch predictor */
+	bpiall();
+
+	/* Iterate thru each cache identified in CLIDR and invalidate */
+	clidr = read_clidr();
+	for (level = 0; level < 7; level++) {
+		unsigned int ctype = (clidr >> (level * 3)) & 0x7;
+		uint32_t csselr;
+
+		switch(ctype) {
+		case 0x0:
+			/* no cache */
+			break;
+		case 0x1:
+			/* icache only */
+			csselr = (level << 1) | 1;
+			write_csselr(csselr);
+			icache_invalidate_all();
+			break;
+		case 0x2:
+		case 0x4:
+			/* dcache only or unified cache */
+			dcache_invalidate_all();
+			break;
+		case 0x3:
+			/* separate icache and dcache */
+			csselr = (level << 1) | 1;
+			write_csselr(csselr);
+			icache_invalidate_all();
+
+			csselr = level < 1;
+			write_csselr(csselr);
+			dcache_invalidate_all();
+			break;
+		default:
+			/* reserved */
+			break;
+		}
+	}
+
+	/* Invalidate TLB */
+	tlb_invalidate_all();
+}
+
 /* FIXME: wrapper around imported mmu_setup() for now */
 extern void mmu_setup(unsigned long start, unsigned long size);
 void mmu_setup_by_mva(unsigned long start, unsigned long size)