MIPS: Add R16000 detection
This allows the kernel to correctly detect an R16000 MIPS CPU on systems that
have those. Otherwise, such systems will detect the CPU as an R14000, due to
similarities in the CPU PRId value.
Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Cc: Linux MIPS List <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/9092/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 1bae006..cb436f5 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -852,8 +852,13 @@
c->tlbsize = 64;
break;
case PRID_IMP_R14000:
- c->cputype = CPU_R14000;
- __cpu_name[cpu] = "R14000";
+ if (((c->processor_id >> 4) & 0x0f) > 2) {
+ c->cputype = CPU_R16000;
+ __cpu_name[cpu] = "R16000";
+ } else {
+ c->cputype = CPU_R14000;
+ __cpu_name[cpu] = "R14000";
+ }
set_isa(c, MIPS_CPU_ISA_IV);
c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX |
MIPS_CPU_FPU | MIPS_CPU_32FPR |
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 9d90efe..192e7f5 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -777,6 +777,7 @@
case CPU_R12000:
case CPU_R14000:
+ case CPU_R16000:
counters = 4;
break;