Blackfin: add blackfin_invalidate_entire_icache for SMP systems
The KGDB code uses this when switching processors to make sure the icache
is in a valid state.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-common/cache-c.c b/arch/blackfin/mach-common/cache-c.c
index e6ab1f8..b59ce3c 100644
--- a/arch/blackfin/mach-common/cache-c.c
+++ b/arch/blackfin/mach-common/cache-c.c
@@ -16,9 +16,21 @@
void blackfin_invalidate_entire_dcache(void)
{
u32 dmem = bfin_read_DMEM_CONTROL();
- SSYNC();
bfin_write_DMEM_CONTROL(dmem & ~0xc);
SSYNC();
bfin_write_DMEM_CONTROL(dmem);
SSYNC();
}
+
+/* Invalidate the Entire Instruction cache by
+ * clearing IMC bit
+ */
+void blackfin_invalidate_entire_icache(void)
+{
+ u32 imem = bfin_read_IMEM_CONTROL();
+ bfin_write_IMEM_CONTROL(imem & ~0x4);
+ SSYNC();
+ bfin_write_IMEM_CONTROL(imem);
+ SSYNC();
+}
+
