If we relocate the code, the data cache must be flushed before we jump to the new code.
Signed-off-by: Thomas Chou thomas@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. */