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| author | Paul Burton <paul.burton@imgtec.com> | 2014-04-14 16:58:45 +0200 |
|---|---|---|
| committer | Paul Burton <paul.burton@imgtec.com> | 2014-05-28 17:20:33 +0200 |
| commit | 33b6866568acce808361fcf25c107c2c94f8eadb (patch) | |
| tree | c2a27225b5118e764549849a712fe89e92427aad /arch/mips/kernel/smp-cps.c | |
| parent | MIPS: smp-cps: prevent multi-core SMP with unsuitable CCA (diff) | |
| download | linux-33b6866568acce808361fcf25c107c2c94f8eadb.tar.xz linux-33b6866568acce808361fcf25c107c2c94f8eadb.zip | |
MIPS: smp-cps: set a coherent default CCA
This patch sets a default CCA suited for use with multi-core SMP on all
current MIPS CPS based systems. It may still be overriden by the cca=
argument on the kernel command line.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Diffstat (limited to 'arch/mips/kernel/smp-cps.c')
| -rw-r--r-- | arch/mips/kernel/smp-cps.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c index e2f78b34ff93..6b96fedf0407 100644 --- a/arch/mips/kernel/smp-cps.c +++ b/arch/mips/kernel/smp-cps.c @@ -76,6 +76,9 @@ static void __init cps_smp_setup(void) __cpu_logical_map[v] = v; } + /* Set a coherent default CCA (CWB) */ + change_c0_config(CONF_CM_CMASK, 0x5); + /* Core 0 is powered up (we're running on it) */ bitmap_set(core_power, 0, 1); |