From a2ca78cee1c428843f6833150c7e64db05f9d668 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 3 Nov 2009 02:57:45 +0000 Subject: [PATCH] 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 --- arch/blackfin/mach-common/arch_checks.c | 5 +++++ 1 file changed, 5 insertions(+) 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 -- 2.20.1