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| author | Robin Getz <rgetz@blackfin.uclinux.org> | 2009-03-05 18:18:49 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2009-03-05 18:18:49 +0800 |
| commit | 00049522425e8390d1815e1579733644ad2bb0c7 (patch) | |
| tree | cef5c9a4440f376ad4796a6c1b80f57cd8311950 /arch/blackfin | |
| parent | 5047607f0170b1f797a2fe37bb45310c1e1d5ce0 (diff) | |
| download | lwn-00049522425e8390d1815e1579733644ad2bb0c7.tar.gz lwn-00049522425e8390d1815e1579733644ad2bb0c7.zip | |
Blackfin arch: Random read/write errors are a bad thing
Random read/write errors are a bad thing - so don't let anyone
(including the test bench) run on something we know is bad.
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.c | 4 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/arch_checks.c | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index e5c116230800..4646b985cc9d 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -889,6 +889,10 @@ void __init setup_arch(char **cmdline_p) CPU, bfin_revid()); } + /* We can't run on BF548-0.1 due to ANOMALY 05000448 */ + if (bfin_cpuid() == 0x27de && bfin_revid() == 1) + panic("You can't run on this processor due to 05000448\n"); + printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n"); printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n", diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c index b3a2e3fa15e3..a2ca26aa210d 100644 --- a/arch/blackfin/mach-common/arch_checks.c +++ b/arch/blackfin/mach-common/arch_checks.c @@ -67,3 +67,9 @@ #if ((0xffffffff - L1_CODE_START + 1) + CONFIG_BOOT_LOAD) > 0x1000000 # error "The kernel load address is too high; keep it below 10meg for safety" #endif + +#ifdef ANOMALY_05000448 +# if ANOMALY_05000448 +# error You are using a part with anomaly 05000448, this issue causes random memory read/write failures - that means random crashes. +# endif +#endif |