Blackfin: decouple unrelated cache settings to get exact behavior

[safe/jmp/linux-2.6] / arch / blackfin / mach-common / arch_checks.c

diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
index f9160d8..5998d86 100644 (file)
--- a/arch/blackfin/mach-common/arch_checks.c
+++ b/arch/blackfin/mach-common/arch_checks.c
@@ -27,8 +27,9 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include <asm/mach/anomaly.h>
-#include <asm/mach-common/clocks.h>
+#include <asm/fixed_code.h>
+#include <mach/anomaly.h>
+#include <asm/clocks.h>
 
 #ifdef CONFIG_BFIN_KERNEL_CLOCK
 
@@ -53,3 +54,27 @@
 # endif
 
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */
+
+#if CONFIG_BOOT_LOAD < FIXED_CODE_END
+# error "The kernel load address must be after the fixed code section"
+#endif
+
+#if (CONFIG_BOOT_LOAD & 0x3)
+# error "The kernel load address must be 4 byte aligned"
+#endif
+
+/* The entire kernel must be able to make a 24bit pcrel call to start of L1 */
+#if ((0xffffffff - L1_CODE_START + 1) + CONFIG_BOOT_LOAD) > 0x1000000
+# error "The kernel load address is too high; keep it below 10meg for safety"
+#endif
+
+#if ANOMALY_05000448
+# error You are using a part with anomaly 05000448, this issue causes random memory read/write failures - that means random crashes.
+#endif
+
+/* if 220 exists, can not set External Memory WB and L2 not_cached, either External Memory not_cached and L2 WB */
+#if ANOMALY_05000220 && \
+       ((defined(CONFIG_BFIN_EXTMEM_WRITEBACK) && !defined(CONFIG_BFIN_L2_DCACHEABLE)) || \
+        (!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