[U-Boot] [PATCH] ppc4xx: Invalidate d-cache when used as init-ram
We need to invalidate the data cache after it has been used as init-ram.
This problem was detected on the lwmon5 update.
Signed-off-by: Stefan Roese sr@denx.de --- arch/powerpc/cpu/ppc4xx/start.S | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S index 5296dad..4bad32f 100644 --- a/arch/powerpc/cpu/ppc4xx/start.S +++ b/arch/powerpc/cpu/ppc4xx/start.S @@ -1459,6 +1459,11 @@ relocate_code: mtspr SPRN_DTV3,r6 msync isync + + /* Invalidate data cache, now no longer our stack */ + dccci 0,0 + sync + isync #endif /* CONFIG_SYS_INIT_RAM_DCACHE */
/*
On Tuesday 31 August 2010 11:27:14 Stefan Roese wrote:
We need to invalidate the data cache after it has been used as init-ram.
This problem was detected on the lwmon5 update.
Applied to u-boot-ppc4xx/master. Thanks.
Cheers, Stefan
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Stefan Roese