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.foers...@missinglinkelectronics.com>
---
arch/nios2/cpu/cpu.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c
index ef360ee..01dd057 100644
--- a/arch/nios2/cpu/cpu.c
+++ b/arch/nios2/cpu/cpu.c
@@ -47,3 +47,20 @@ 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);
+ return;
+}
+
+void dcache_disable(void)
+{
+ flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
+ return;
+}
--
1.7.6
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