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Blackfin: check for anomaly 05000475

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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>
This commit is contained in:
Mike Frysinger 2009-11-03 02:57:45 +00:00
parent f99e8c1d0f
commit a2ca78cee1
1 changed files with 5 additions and 0 deletions
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5
arch/blackfin/mach-common/arch_checks.c
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@ -57,3 +57,8 @@
(!defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) && defined(CONFIG_BFIN_L2_WRITEBACK))) (!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. # error You are exposing Anomaly 220 in this config, either config L2 as Write Through, or make External Memory WB.
#endif #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