[MIPS] Fix build for PNX platforms.

Build error was caused by commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/c-r4k.c

@@ -1226,6 +1226,28 @@ void au1x00_fixup_config_od(void)
 	}
 }
 
+/* CP0 hazard avoidance. */
+#define NXP_BARRIER()							\
+	 __asm__ __volatile__(						\
+	".set noreorder\n\t"						\
+	"nop; nop; nop; nop; nop; nop;\n\t"				\
+	".set reorder\n\t")
+
+static void nxp_pr4450_fixup_config(void)
+{
+	unsigned long config0;
+
+	config0 = read_c0_config();
+
+	/* clear all three cache coherency fields */
+	config0 &= ~(0x7 | (7 << 25) | (7 << 28));
+	config0 |= (((_page_cachable_default >> _CACHE_SHIFT) <<  0) |
+		    ((_page_cachable_default >> _CACHE_SHIFT) << 25) |
+		    ((_page_cachable_default >> _CACHE_SHIFT) << 28));
+	write_c0_config(config0);
+	NXP_BARRIER();
+}
+
 static int __cpuinitdata cca = -1;
 
 static int __init cca_setup(char *str)
@@ -1271,6 +1293,10 @@ static void __cpuinit coherency_setup(void)
 	case CPU_AU1500: /* rev. AB */
 		au1x00_fixup_config_od();
 		break;
+
+	case PRID_IMP_PR4450:
+		nxp_pr4450_fixup_config();
+		break;
 	}
 }
 

arch/mips/nxp/pnx8550/jbs/board_setup.c

@@ -47,16 +47,7 @@
 
 void __init board_setup(void)
 {
-	unsigned long config0, configpr;
-
-	config0 = read_c0_config();
-
-	/* clear all three cache coherency fields */
-	config0 &= ~(0x7 | (7<<25) | (7<<28));
-	config0 |= (CONF_CM_DEFAULT | (CONF_CM_DEFAULT<<25) |
-			(CONF_CM_DEFAULT<<28));
-	write_c0_config(config0);
-	BARRIER;
+	unsigned long configpr;
 
 	configpr = read_c0_config7();
 	configpr |= (1<<19); /* enable tlb */

arch/mips/nxp/pnx8550/stb810/board_setup.c

@@ -33,15 +33,7 @@
 
 void __init board_setup(void)
 {
-	unsigned long config0, configpr;
-
-	config0 = read_c0_config();
-
-	/* clear all three cache coherency fields */
-	config0 &= ~(0x7 | (7<<25) | (7<<28));
-	config0 |= (CONF_CM_DEFAULT | (CONF_CM_DEFAULT<<25) |
-			(CONF_CM_DEFAULT<<28));
-	write_c0_config(config0);
+	unsigned long configpr;
 
 	configpr = read_c0_config7();
 	configpr |= (1<<19); /* enable tlb */

include/asm-mips/pgtable-bits.h

@@ -134,6 +134,4 @@
 
 #define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _CACHE_MASK)
 
-#define CONF_CM_DEFAULT		(PAGE_CACHABLE_DEFAULT>>_CACHE_SHIFT)
-
 #endif /* _ASM_PGTABLE_BITS_H */