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authorRobin Getz <rgetz@blackfin.uclinux.org>2009-01-07 23:14:39 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:39 +0800
commit7419a327f6264bef869b195497aaf03b72ca17b7 (patch)
treed260797e70b6a6ab44e66c365c55de3e8b531b28 /arch/blackfin
parentfea05dacdabe14d875093daa2fb6135fa4950142 (diff)
Blackfin arch: panic when running on a chip rev below what we are compiled for
If we are running on a chip revision below what we are compiled for, there will be missing anomaly workarounds, and a panic is inevitable. Do is sooner, rather than later, so people don't look for bugs that already have workarounds (that they turned off). Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/kernel/setup.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 4dffb913147..d3d37e7f465 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -876,9 +876,12 @@ void __init setup_arch(char **cmdline_p)
if (bfin_compiled_revid() == -1)
printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
bfin_revid());
- else if (bfin_compiled_revid() != 0xffff)
+ else if (bfin_compiled_revid() != 0xffff) {
printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
bfin_compiled_revid(), bfin_revid());
+ if (bfin_compiled_revid() > bfin_revid())
+ panic("Error: you are missing anomaly workarounds for this rev\n");
+ }
}
if (bfin_revid() < CONFIG_BF_REV_MIN || bfin_revid() > CONFIG_BF_REV_MAX)
printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",