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| author |   Robin Getz <rgetz@blackfin.uclinux.org> | 2009-01-07 23:14:39 +0800 |
|---|---|---|
| committer |   Bryan Wu <cooloney@kernel.org> | 2009-01-07 23:14:39 +0800 |
| commit | 7419a327f6264bef869b195497aaf03b72ca17b7 (patch) | |
| tree | d260797e70b6a6ab44e66c365c55de3e8b531b28 /arch | |
| parent | Blackfin arch: Fix bug - wrong endpoint number and dma channels of USB (diff) | |
| download | linux-dev-7419a327f6264bef869b195497aaf03b72ca17b7.tar.xz linux-dev-7419a327f6264bef869b195497aaf03b72ca17b7.zip | |
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')
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 4dffb913147e..d3d37e7f465b 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", |