Commit ac337168a unified functions to flush and invalidate dcache by range. These two functions were no-op for SoCs other than 4xx and MPC86xx. Adding these functions seemed to be correct but introduced issues when the dcache is flushed. While the root cause is under investigation, disable these functions for affected SoCs so various drivers can work.
Signed-off-by: York Sun york.sun@nxp.com
---
arch/powerpc/lib/ppccache.S | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/lib/ppccache.S b/arch/powerpc/lib/ppccache.S index b96dbc6..66cf02d 100644 --- a/arch/powerpc/lib/ppccache.S +++ b/arch/powerpc/lib/ppccache.S @@ -65,6 +65,7 @@ ppcSync: * flush_dcache_range(unsigned long start, unsigned long stop) */ _GLOBAL(flush_dcache_range) +#if defined(CONFIG_4xx) || defined(CONFIG_MPC86xx) li r5,L1_CACHE_BYTES-1 andc r3,r3,r5 subf r4,r3,r4 @@ -77,6 +78,7 @@ _GLOBAL(flush_dcache_range) addi r3,r3,L1_CACHE_BYTES bdnz 1b sync /* wait for dcbst's to get to ram */ +#endif blr
/* @@ -87,6 +89,7 @@ _GLOBAL(flush_dcache_range) * invalidate_dcache_range(unsigned long start, unsigned long stop) */ _GLOBAL(invalidate_dcache_range) +#if defined(CONFIG_4xx) || defined(CONFIG_MPC86xx) li r5,L1_CACHE_BYTES-1 andc r3,r3,r5 subf r4,r3,r4 @@ -100,5 +103,6 @@ _GLOBAL(invalidate_dcache_range) addi r3,r3,L1_CACHE_BYTES bdnz 1b sync /* wait for dcbi's to get to ram */ +#endif blr