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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2023-04-04 11:33:43 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2023-04-05 09:45:09 +0200 |
| commit | 918d779569dafd81fce4257c552aa4205c918c4a (patch) | |
| tree | b3bdb2695300bd994eda271eccc477f503167fb4 | |
| parent | MIPS: mips-cm: Check availability of config registers (diff) | |
| download | linux-918d779569dafd81fce4257c552aa4205c918c4a.tar.xz linux-918d779569dafd81fce4257c552aa4205c918c4a.zip | |
MIPS: Octeon: Opt-out 4k_cache feature
Octeon has a different cache interface with traditional R4K one,
just opt-out this flag for octeon to avoid run R4K cache initialization
code accidentally.
Also remove ISA level assumption for 4k cache.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| -rw-r--r-- | arch/mips/include/asm/cpu-features.h | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index c0983130a44c..c613426b0bfc 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -118,7 +118,7 @@ #define cpu_has_3k_cache __isa_lt_and_opt(1, MIPS_CPU_3K_CACHE) #endif #ifndef cpu_has_4k_cache -#define cpu_has_4k_cache __isa_ge_or_opt(1, MIPS_CPU_4K_CACHE) +#define cpu_has_4k_cache __opt(MIPS_CPU_4K_CACHE) #endif #ifndef cpu_has_octeon_cache #define cpu_has_octeon_cache 0 diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 7ddf07f255f3..6d15a398d389 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1602,6 +1602,8 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu) static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu) { decode_configs(c); + /* Octeon has different cache interface */ + c->options &= ~MIPS_CPU_4K_CACHE; switch (c->processor_id & PRID_IMP_MASK) { case PRID_IMP_CAVIUM_CN38XX: case PRID_IMP_CAVIUM_CN31XX: |