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authorMichal Simek <monstr@monstr.eu>2009-04-21 14:06:08 +0200
committerMichal Simek <monstr@monstr.eu>2009-04-23 16:27:28 +0200
commitfbeda67782689bf80109512b16ac47264a282d01 (patch)
tree0e2e375116144d1e65b26bad3c94b5a956e115e2
parent79533fd4cb7c261694d3b7d5bdde78836bc35b49 (diff)
microblaze: Do not use PVR configuration for broken MB version
Signed-off-by: Michal Simek <monstr@monstr.eu>
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c9
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo.c2
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
index cf7424a6bb8..153f57c57b6 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -30,6 +30,13 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
int temp; /* for saving temp value */
get_pvr(&pvr);
+ CI(ver_code, VERSION);
+ if (!ci->ver_code) {
+ printk(KERN_ERR "ERROR: MB has broken PVR regs "
+ "-> use DTS setting\n");
+ return;
+ }
+
temp = PVR_USE_BARREL(pvr) | PVR_USE_MSR_INSTR(pvr) |\
PVR_USE_PCMP_INSTR(pvr) | PVR_USE_DIV(pvr);
if (ci->use_instr != temp)
@@ -60,8 +67,6 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
CI(mmu, USE_MMU);
- CI(ver_code, VERSION);
-
CI(use_icache, USE_ICACHE);
CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
CI(icache_write, ICACHE_ALLOW_WR);
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
index 4a740dfcf6d..a10bea119b9 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -71,7 +71,7 @@ void __init setup_cpuinfo(void)
__func__);
set_cpuinfo_static(&cpuinfo, cpu);
break;
-/* FIXME I found weird behavior with MB 7.00.a/b
+/* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
* please do not use FULL PVR with MMU */
case 1:
printk(KERN_INFO "%s: Using full CPU PVR support\n",