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Blackfin arch: Random read/write errors are a bad thing

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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>
This commit is contained in:
Robin Getz 2009-03-05 18:18:49 +08:00 committed by Bryan Wu
parent 5047607f01
commit 0004952242
2 changed files with 10 additions and 0 deletions
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4
arch/blackfin/kernel/setup.c
View file

@ -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",

6
arch/blackfin/mach-common/arch_checks.c
View file

@ -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