This simple adds the cache flush for arm926. Most likely
the same works for other families, like arm920t, but I didn't
check as this is currently just an RFC.
Signed-off-by: Alessandro Rubini <rub...@gnudd.com>
---
lib_arm/cache.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/lib_arm/cache.c b/lib_arm/cache.c
index 61ee9d3..b36fd24 100644
--- a/lib_arm/cache.c
+++ b/lib_arm/cache.c
@@ -32,5 +32,11 @@ void flush_cache (unsigned long dummy1, unsigned long
dummy2)
arm1136_cache_flush();
#endif
+#ifdef CONFIG_ARM926EJS
+ /* test and clean, page 2-23 of arm926ejs manual */
+ asm("0: mrc p15, 0, r15, c7, c10, 3\n\t" "bne 0b\n" : : : "memory");
+ /* disable write buffer as well (page 2-22) */
+ asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
+#endif
return;
}
--
1.6.0.2
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