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-rw-r--r--src/arch/arm/armv7/cache.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/src/arch/arm/armv7/cache.c b/src/arch/arm/armv7/cache.c
index acd1f9aefa..4ee2687d38 100644
--- a/src/arch/arm/armv7/cache.c
+++ b/src/arch/arm/armv7/cache.c
@@ -194,17 +194,20 @@ void dcache_invalidate_all(void)
dcache_foreach(OP_DCISW);
}
-static unsigned int line_bytes(void)
+unsigned int dcache_line_bytes(void)
{
uint32_t ccsidr;
- unsigned int size;
+ static unsigned int line_bytes = 0;
+
+ if (line_bytes)
+ return line_bytes;
ccsidr = read_ccsidr();
/* [2:0] - Indicates (Log2(number of words in cache line)) - 2 */
- size = 1 << ((ccsidr & 0x7) + 2); /* words per line */
- size *= sizeof(unsigned int); /* bytes per line */
+ line_bytes = 1 << ((ccsidr & 0x7) + 2); /* words per line */
+ line_bytes *= sizeof(unsigned int); /* bytes per line */
- return size;
+ return line_bytes;
}
/*
@@ -217,7 +220,7 @@ static void dcache_op_mva(void const *addr, size_t len, enum dcache_op op)
{
unsigned long line, linesize;
- linesize = line_bytes();
+ linesize = dcache_line_bytes();
line = (uint32_t)addr & ~(linesize - 1);
dsb();