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authorMike Frysinger <vapier@gentoo.org>2009-11-03 02:57:45 +0000
committerMike Frysinger <vapier@gentoo.org>2009-11-25 02:35:41 -0500
commita2ca78cee1c428843f6833150c7e64db05f9d668 (patch)
treec56270c3dd2ff1f6a634d21406cc2aaebe9a2d3d /arch
parentf99e8c1d0f41011870d14d5990c65e65b123f2ef (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/mach-common/arch_checks.c5
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 9dbafcdcf47..f2ca211a76a 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