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Blackfin arch: panic when running on a chip rev below what we are compiled for

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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>
This commit is contained in:
Robin Getz 2009-01-07 23:14:39 +08:00 • committed by Bryan Wu
parent fea05dacda
commit 7419a327f6
1 changed files with 4 additions and 1 deletions
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5
arch/blackfin/kernel/setup.c
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@ -876,9 +876,12 @@ void __init setup_arch(char **cmdline_p)
if (bfin_compiled_revid() == -1) if (bfin_compiled_revid() == -1)
printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n", printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
bfin_revid()); 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", printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
bfin_compiled_revid(), bfin_revid()); 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) 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", printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",