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| author | Paul Burton <paul.burton@imgtec.com> | 2014-07-14 11:32:14 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-08-02 00:06:45 +0200 |
| commit | 1f6c52ff7225789d20c1d69883f263d502b7eda7 (patch) | |
| tree | c97ef1d8e597e9b046b6adecf305df488d6543c2 /arch/mips/kernel/cpu-probe.c | |
| parent | MIPS: define MAAR register accessors & bits (diff) | |
| download | linux-1f6c52ff7225789d20c1d69883f263d502b7eda7.tar.xz linux-1f6c52ff7225789d20c1d69883f263d502b7eda7.zip | |
MIPS: detect presence of MAARs
Detect the presence of MAAR using the MRP bit in Config5, and record
that presence using a CPU option bit. A cpu_has_maar macro will then
allow code to conditionalise upon the presence of MAARs.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7330/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 66b8fe97f739..e34b10be782e 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -405,6 +405,8 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c) if (config5 & MIPS_CONF5_EVA) c->options |= MIPS_CPU_EVA; + if (config5 & MIPS_CONF5_MRP) + c->options |= MIPS_CPU_MAAR; return config5 & MIPS_CONF_M; } |