Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

[pandora-kernel.git] / arch / arm / mm / mmu.c

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 3b5e47d..e5d61ee 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -114,6 +114,10 @@ static void __init early_cachepolicy(char **p)
        }
        if (i == ARRAY_SIZE(cache_policies))
                printk(KERN_ERR "ERROR: unknown or unsupported cache policy\n");
+       if (cpu_architecture() >= CPU_ARCH_ARMv6) {
+               printk(KERN_WARNING "Only cachepolicy=writeback supported on ARMv6 and later\n");
+               cachepolicy = CPOLICY_WRITEBACK;
+       }
        flush_cache_all();
        set_cr(cr_alignment);
 }
@@ -252,13 +256,15 @@ static void __init build_mem_type_table(void)
        int cpu_arch = cpu_architecture();
        int i;
 
+       if (cpu_arch < CPU_ARCH_ARMv6) {
 #if defined(CONFIG_CPU_DCACHE_DISABLE)
-       if (cachepolicy > CPOLICY_BUFFERED)
-               cachepolicy = CPOLICY_BUFFERED;
+               if (cachepolicy > CPOLICY_BUFFERED)
+                       cachepolicy = CPOLICY_BUFFERED;
 #elif defined(CONFIG_CPU_DCACHE_WRITETHROUGH)
-       if (cachepolicy > CPOLICY_WRITETHROUGH)
-               cachepolicy = CPOLICY_WRITETHROUGH;
+               if (cachepolicy > CPOLICY_WRITETHROUGH)
+                       cachepolicy = CPOLICY_WRITETHROUGH;
 #endif
+       }
        if (cpu_arch < CPU_ARCH_ARMv5) {
                if (cachepolicy >= CPOLICY_WRITEALLOC)
                        cachepolicy = CPOLICY_WRITEBACK;