If we relocate the code, the data cache must be flushed before
we jump to the new code.
Signed-off-by: Thomas Chou <tho...@wytron.com.tw>
---
cpu/nios2/start.S | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/cpu/nios2/start.S b/cpu/nios2/start.S
index 4b4c560..b0a51a8 100644
--- a/cpu/nios2/start.S
+++ b/cpu/nios2/start.S
@@ -106,6 +106,17 @@ _cur: movhi r5, %hi(_cur - _start)
bne r5, r6, 2b
3:
+ /* DCACHE FLUSH -- after relocating code and data
+ */
+ movhi r4, %hi(CONFIG_SYS_DCACHELINE_SIZE)
+ ori r4, r4, %lo(CONFIG_SYS_DCACHELINE_SIZE)
+ movhi r5, %hi(CONFIG_SYS_DCACHE_SIZE)
+ ori r5, r5, %lo(CONFIG_SYS_DCACHE_SIZE)
+ mov r6, r0
+1: flushd 0(r6)
+ add r6, r6, r4
+ bltu r6, r5, 1b
+
/* ZERO BSS/SBSS -- bss and sbss are assumed to be adjacent
* and between __bss_start and _end.
*/
--
1.6.6.1
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
