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| author |   Mike Frysinger <vapier@gentoo.org> | 2009-11-03 02:57:45 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-11-25 02:35:41 -0500 |
| commit | a2ca78cee1c428843f6833150c7e64db05f9d668 (patch) | |
| tree | c56270c3dd2ff1f6a634d21406cc2aaebe9a2d3d | |
| parent | Blackfin: work around testset anomaly 05000477 (diff) | |
| download | linux-dev-a2ca78cee1c428843f6833150c7e64db05f9d668.tar.xz linux-dev-a2ca78cee1c428843f6833150c7e64db05f9d668.zip | |
Blackfin: check for anomaly 05000475
Parts that have on-chip L2 SRAM cannot safely utilize writeback caching
mode, so reject any attempts to use it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | arch/blackfin/mach-common/arch_checks.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c index 9dbafcdcf479..f2ca211a76a0 100644 --- a/arch/blackfin/mach-common/arch_checks.c +++ b/arch/blackfin/mach-common/arch_checks.c @@ -57,3 +57,8 @@ (!defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) && defined(CONFIG_BFIN_L2_WRITEBACK))) # error You are exposing Anomaly 220 in this config, either config L2 as Write Through, or make External Memory WB. #endif + +#if ANOMALY_05000475 && \ + (defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK)) +# error "Anomaly 475 does not allow you to use Write Back cache with L2 or External Memory" +#endif |