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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>
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2 changed files with 10 additions and 0 deletions
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@ -889,6 +889,10 @@ void __init setup_arch(char **cmdline_p)
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CPU, bfin_revid());
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}
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/* We can't run on BF548-0.1 due to ANOMALY 05000448 */
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if (bfin_cpuid() == 0x27de && bfin_revid() == 1)
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panic("You can't run on this processor due to 05000448\n");
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printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
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printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n",
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@ -67,3 +67,9 @@
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#if ((0xffffffff - L1_CODE_START + 1) + CONFIG_BOOT_LOAD) > 0x1000000
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# error "The kernel load address is too high; keep it below 10meg for safety"
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#endif
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#ifdef ANOMALY_05000448
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# if ANOMALY_05000448
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# error You are using a part with anomaly 05000448, this issue causes random memory read/write failures - that means random crashes.
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# endif
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#endif
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