diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2016-02-09 21:55:52 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-05-13 15:30:25 +0200 |
| commit | 2e274768e4dd9565a31cd1979ed6d534cd4e656f (patch) | |
| tree | d1546998deecaf65fa480acdbb20823642f0f18d /arch/mips/kernel | |
| parent | MIPS: Allow RIXI to be used on non-R2 or R6 cores (diff) | |
| download | linux-2e274768e4dd9565a31cd1979ed6d534cd4e656f.tar.xz linux-2e274768e4dd9565a31cd1979ed6d534cd4e656f.zip | |
MIPS: Move RIXI exception enabling after vendor-specific cpu_probe
Some processors may not have the RIXI bit advertised in the Config3 register,
not being a MIPS32R2 or R6 core, yet, they might be supporting it through a
different way, which is overriden during vendor-specific cpu_probe().
Move the RIXI exceptions enabling after the vendor-specific cpu_probe()
function has had a change to run and override the current CPU's options with
MIPS_CPU_RIXI.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: pgynther@google.com
Cc: paul.burton@imgtec.com
Cc: ddaney.cavm@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 8eda42a9ca59..4bcbf002a8f7 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -862,15 +862,6 @@ static void decode_configs(struct cpuinfo_mips *c) mips_probe_watch_registers(c); - if (cpu_has_rixi) { - /* Enable the RIXI exceptions */ - set_c0_pagegrain(PG_IEC); - back_to_back_c0_hazard(); - /* Verify the IEC bit is set */ - if (read_c0_pagegrain() & PG_IEC) - c->options |= MIPS_CPU_RIXIEX; - } - #ifndef CONFIG_MIPS_CPS if (cpu_has_mips_r2_r6) { c->core = get_ebase_cpunum(); @@ -1733,6 +1724,15 @@ void cpu_probe(void) */ BUG_ON(current_cpu_type() != c->cputype); + if (cpu_has_rixi) { + /* Enable the RIXI exceptions */ + set_c0_pagegrain(PG_IEC); + back_to_back_c0_hazard(); + /* Verify the IEC bit is set */ + if (read_c0_pagegrain() & PG_IEC) + c->options |= MIPS_CPU_RIXIEX; + } + if (mips_fpu_disabled) c->options &= ~MIPS_CPU_FPU; |