From fbeda67782689bf80109512b16ac47264a282d01 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 21 Apr 2009 14:06:08 +0200 Subject: [PATCH] microblaze: Do not use PVR configuration for broken MB version Signed-off-by: Michal Simek --- arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c | 9 +++++++-- arch/microblaze/kernel/cpu/cpuinfo.c | 2 +- 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 cf7424a..153f57c 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 4a740df..a10bea1 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", -- 2.7.4