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| author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-05 08:14:21 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-06 16:17:11 +0100 |
| commit | 075c733e19ce7530b53b78151cc4d303c8f64548 (patch) | |
| tree | c4f3e9a373b924794c97f5964cd55b121918ab41 | |
| parent | 9349075a15a876f8e82f433ec84f99d19d3e77f9 (diff) | |
| download | linux-stable-075c733e19ce7530b53b78151cc4d303c8f64548.tar.gz linux-stable-075c733e19ce7530b53b78151cc4d303c8f64548.tar.bz2 linux-stable-075c733e19ce7530b53b78151cc4d303c8f64548.zip | |
[MIPS] RM7000: Enable ICACHE_REFILLS_WORKAROUND_WAR.
The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
opposes it being called that) where invalid instructions in the same
I-cache line worth of instructions being fetched may case spurious
exceptions.
The workaround for this was only enabled for E9000 cores; enable it also
for all RM7000-based platforms.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | include/asm-mips/war.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/include/asm-mips/war.h b/include/asm-mips/war.h index 13a3502eef44..ec0eeebd8802 100644 --- a/include/asm-mips/war.h +++ b/include/asm-mips/war.h @@ -177,18 +177,22 @@ #endif /* - * The RM9000 has a bug (though PMC-Sierra opposes it being called that) - * where invalid instructions in the same I-cache line worth of instructions - * being fetched may case spurious exceptions. - */ -#if defined(CONFIG_MOMENCO_JAGUAR_ATX) || defined(CONFIG_MOMENCO_OCELOT_3) || \ - defined(CONFIG_PMC_YOSEMITE) || defined(CONFIG_BASLER_EXCITE) + * The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra + * opposes it being called that) where invalid instructions in the same + * I-cache line worth of instructions being fetched may case spurious + * exceptions. + */ +#if defined(CONFIG_BASLER_EXCITE) || defined(CONFIG_MOMENCO_JAGUAR_ATX) || \ + defined(CONFIG_MIPS_ATLAS) || defined(CONFIG_MIPS_MALTA) || \ + defined(CONFIG_MOMENCO_OCELOT) || defined(CONFIG_MOMENCO_OCELOT_3) || \ + defined(CONFIG_MOMENCO_OCELOT_C) || defined(CONFIG_PMC_YOSEMITE) || \ + defined(CONFIG_SGI_IP32) || defined(CONFIG_WR_PPMC) #define ICACHE_REFILLS_WORKAROUND_WAR 1 #endif /* - * ON the R10000 upto version 2.6 (not sure about 2.7) there is a bug that + * On the R10000 upto version 2.6 (not sure about 2.7) there is a bug that * may cause ll / sc and lld / scd sequences to execute non-atomically. */ #ifdef CONFIG_SGI_IP27 |