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authorMichal Simek <monstr@monstr.eu>2009-10-21 12:29:46 +0200
committerMichal Simek <monstr@monstr.eu>2009-12-14 08:45:05 +0100
commitf6e1f1b4809b6a63e22f82358ba2e750c7e1c1a2 (patch)
treeb79122a5eba48559e70914f31d0a0947c9b36667 /arch/microblaze/kernel
parentd4f182700bb1279ae7e76a59b9be39efa5f23bfe (diff)
microblaze: Checking DTS against PVR for write-back cache
WB cache has special flag in PVR. There is added checking mechanism for PVR and DTS. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
index c5acf2b56ee..f72dbd66c84 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -21,8 +21,14 @@
*/
#define CI(c, p) { ci->c = PVR_##p(pvr); }
+
+#if defined(CONFIG_EARLY_PRINTK) && defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
#define err_printk(x) \
early_printk("ERROR: Microblaze " x "-different for PVR and DTS\n");
+#else
+#define err_printk(x) \
+ printk(KERN_INFO "ERROR: Microblaze " x "-different for PVR and DTS\n");
+#endif
void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
{
@@ -83,6 +89,11 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
CI(dcache_base, DCACHE_BASEADDR);
CI(dcache_high, DCACHE_HIGHADDR);
+ temp = PVR_DCACHE_USE_WRITEBACK(pvr);
+ if (ci->dcache_wb != temp)
+ err_printk("DCACHE WB");
+ ci->dcache_wb = temp;
+
CI(use_dopb, D_OPB);
CI(use_iopb, I_OPB);
CI(use_dlmb, D_LMB);