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| author | Jayachandran C <jayachandranc@netlogicmicro.com> | 2011-11-16 00:21:20 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-12-07 22:04:55 +0000 |
| commit | a3d4fb2d2a4c52b22cde90049a78e323cde187e5 (patch) | |
| tree | e5ed7235b8f8a0b29b9aad11b4d1f57ef2f59809 /arch/mips/kernel/cpu-probe.c | |
| parent | 0be3d9bb1460a87170a1b78b9ab12cb0ac02c2dc (diff) | |
| download | lwn-a3d4fb2d2a4c52b22cde90049a78e323cde187e5.tar.gz lwn-a3d4fb2d2a4c52b22cde90049a78e323cde187e5.zip | |
MIPS: Netlogic: XLP CPU support.
Add support for Netlogic's XLP MIPS SoC. This patch adds:
* XLP processor ID in cpu_probe.c and asm/cpu.h
* XLP case to asm/module.h
* CPU_XLP case to mm/tlbex.c
* minor change to r4k cache handling to ignore XLP secondary cache
* XLP cpu overrides to mach-netlogic/cpu-feature-overrides.h
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2966/
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 | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index aa20382b9305..92fae7f459cf 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -192,6 +192,7 @@ void __init check_wait(void) case CPU_CAVIUM_OCTEON2: case CPU_JZRISC: case CPU_XLR: + case CPU_XLP: cpu_wait = r4k_wait; break; @@ -1024,6 +1025,11 @@ static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu) MIPS_CPU_LLSC); switch (c->processor_id & 0xff00) { + case PRID_IMP_NETLOGIC_XLP832: + c->cputype = CPU_XLP; + __cpu_name[cpu] = "Netlogic XLP"; + break; + case PRID_IMP_NETLOGIC_XLR732: case PRID_IMP_NETLOGIC_XLR716: case PRID_IMP_NETLOGIC_XLR532: @@ -1054,14 +1060,21 @@ static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu) break; default: - printk(KERN_INFO "Unknown Netlogic chip id [%02x]!\n", + pr_info("Unknown Netlogic chip id [%02x]!\n", c->processor_id); c->cputype = CPU_XLR; break; } - c->isa_level = MIPS_CPU_ISA_M64R1; - c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1; + if (c->cputype == CPU_XLP) { + c->isa_level = MIPS_CPU_ISA_M64R2; + c->options |= (MIPS_CPU_FPU | MIPS_CPU_ULRI | MIPS_CPU_MCHECK); + /* This will be updated again after all threads are woken up */ + c->tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; + } else { + c->isa_level = MIPS_CPU_ISA_M64R1; + c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1; + } } #ifdef CONFIG_64BIT |