diff options
| author | Richard Curnow <richard.curnow@st.com> | 2006-09-27 14:09:26 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 14:09:26 +0900 |
| commit | b638d0b921dc95229af0dfd09cd24850336a2f75 (patch) | |
| tree | 0ef34527a47b22421fb92ba2141052fecfe36482 /arch/sh/kernel/cpu/sh4 | |
| parent | fdfc74f9fcebdda14609159d5010b758a9409acf (diff) | |
sh: Optimized cache handling for SH-4/SH-4A caches.
This reworks some of the SH-4 cache handling code to more easily
accomodate newer-style caches (particularly for the > direct-mapped
case), as well as optimizing some of the old code.
Signed-off-by: Richard Curnow <richard.curnow@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh4')
| -rw-r--r-- | arch/sh/kernel/cpu/sh4/probe.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c index 42427b79697..1208da8fe5d 100644 --- a/arch/sh/kernel/cpu/sh4/probe.c +++ b/arch/sh/kernel/cpu/sh4/probe.c @@ -113,6 +113,11 @@ int __init detect_cpu_and_cache_system(void) break; } +#ifdef CONFIG_SH_DIRECT_MAPPED + cpu_data->icache.ways = 1; + cpu_data->dcache.ways = 1; +#endif + /* * On anything that's not a direct-mapped cache, look to the CVR * for I/D-cache specifics. @@ -125,6 +130,9 @@ int __init detect_cpu_and_cache_system(void) (cpu_data->icache.way_incr - (1 << 5)); } + cpu_data->icache.way_size = cpu_data->icache.sets * + cpu_data->icache.linesz; + if (cpu_data->dcache.ways > 1) { size = sizes[(cvr >> 16) & 0xf]; cpu_data->dcache.way_incr = (size >> 1); @@ -133,6 +141,9 @@ int __init detect_cpu_and_cache_system(void) (cpu_data->dcache.way_incr - (1 << 5)); } + cpu_data->dcache.way_size = cpu_data->dcache.sets * + cpu_data->dcache.linesz; + return 0; } |