diff options
Diffstat (limited to 'src/arch/arm64/armv8/cache.c')
| -rw-r--r-- | src/arch/arm64/armv8/cache.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/arch/arm64/armv8/cache.c b/src/arch/arm64/armv8/cache.c index 97822ffdbd..c1dba9259a 100644 --- a/src/arch/arm64/armv8/cache.c +++ b/src/arch/arm64/armv8/cache.c @@ -46,16 +46,17 @@ void tlb_invalidate_all(void) unsigned int dcache_line_bytes(void) { - uint32_t ccsidr; + uint32_t ctr_el0; static unsigned int line_bytes = 0; if (line_bytes) return line_bytes; - ccsidr = raw_read_ccsidr_el1(); - /* [2:0] - Indicates (Log2(number of words in cache line)) - 4 */ - line_bytes = 1 << ((ccsidr & 0x7) + 4); /* words per line */ - line_bytes *= sizeof(uint32_t); /* bytes per word */ + ctr_el0 = raw_read_ctr_el0(); + /* [19:16] - Indicates (Log2(number of words in cache line) */ + line_bytes = 1 << ((ctr_el0 >> 16) & 0xf); + /* Bytes in a word (32-bit) */ + line_bytes *= sizeof(uint32_t); return line_bytes; } |