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authorJoachim Foerster <joachim.foerster@missinglinkelectronics.com>2011-10-20 10:28:10 +0200
committerThomas Chou <thomas@wytron.com.tw>2011-10-28 09:50:13 +0800
commitf956ad98b2ba10901b6ea04983e679bc5ddc4d7a (patch)
treeb1912eaed3ca0908856ab21c913fb05875854081 /arch/nios2
parentce5207e191c59b3135303fd03b98dd2ac3701ba2 (diff)
downloadu-boot-linaro-stable-f956ad98b2ba10901b6ea04983e679bc5ddc4d7a.tar.gz
nios2: Pseudo implement dcache_status/enable/disable()
AFAIK the NIOS2 architecture does not have any possibility to dynamically switch off the data cache. So _status() always reports 1 and _enable/_disable() just issue a flush of everything. For example, common/cmd_elf.c depends on these symbols. Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Diffstat (limited to 'arch/nios2')
-rw-r--r--arch/nios2/cpu/cpu.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c
index ef360eecb..edf256017 100644
--- a/arch/nios2/cpu/cpu.c
+++ b/arch/nios2/cpu/cpu.c
@@ -24,6 +24,7 @@
#include <common.h>
#include <nios2.h>
#include <nios2-io.h>
+#include <asm/cache.h>
#if defined (CONFIG_SYS_NIOS_SYSID_BASE)
extern void display_sysid (void);
@@ -47,3 +48,18 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
nios2_callr(CONFIG_SYS_RESET_ADDR);
return 0;
}
+
+int dcache_status(void)
+{
+ return 1;
+}
+
+void dcache_enable(void)
+{
+ flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
+}
+
+void dcache_disable(void)
+{
+ flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
+}