From: "Steven J. Hill" <sjhill@xxxxxxxx>
This patch depends on the M14K core support patch being
applied first.
Signed-off-by: Steven J. Hill <sjhill@xxxxxxxx>
---
arch/mips/include/asm/cpu-features.h | 3 +++
arch/mips/include/asm/cpu.h | 4 +++-
arch/mips/kernel/cpu-probe.c | 10 ++++++++++
arch/mips/mm/c-r4k.c | 1 +
arch/mips/mm/tlbex.c | 2 ++
arch/mips/oprofile/common.c | 1 +
arch/mips/oprofile/op_model_mipsxx.c | 4 ++++
7 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 556afa2..3b50744 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -98,6 +98,9 @@
#ifndef kernel_uses_smartmips_rixi
#define kernel_uses_smartmips_rixi 0
#endif
+#ifndef cpu_has_mmips
+#define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
+#endif
#ifndef cpu_has_vtag_icache
#define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
#endif
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 00e5adf..242a401 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -96,6 +96,7 @@
#define PRID_IMP_1004K 0x9900
#define PRID_IMP_1074K 0x9a00
#define PRID_IMP_14K 0x9c00
+#define PRID_IMP_14KE 0x9e00
/*
* These are the PRID's for when 23:16 == PRID_COMP_SIBYTE
@@ -262,7 +263,7 @@ enum cpu_type_enum {
*/
CPU_4KC, CPU_4KEC, CPU_4KSC, CPU_24K, CPU_34K, CPU_1004K, CPU_74K,
CPU_ALCHEMY, CPU_PR4450, CPU_BMIPS32, CPU_BMIPS3300, CPU_BMIPS4350,
- CPU_BMIPS4380, CPU_BMIPS5000, CPU_JZRISC, CPU_1074K, CPU_14K,
+ CPU_BMIPS4380, CPU_BMIPS5000, CPU_JZRISC, CPU_1074K, CPU_14K, CPU_14KE,
/*
* MIPS64 class processors
@@ -319,6 +320,7 @@ enum cpu_type_enum {
#define MIPS_CPU_VINT 0x00080000 /* CPU supports MIPSR2 vectored interrupts */
#define MIPS_CPU_VEIC 0x00100000 /* CPU supports MIPSR2 external interrupt controller mode */
#define MIPS_CPU_ULRI 0x00200000 /* CPU has ULRI feature */
+#define MIPS_CPU_MICROMIPS 0x01000000 /* CPU has microMIPS capability */
/*
* CPU ASE encodings
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 8770bf5..420518e 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -201,6 +201,7 @@ void __init check_wait(void)
break;
case CPU_14K:
+ case CPU_14KE:
case CPU_24K:
case CPU_34K:
case CPU_1004K:
@@ -745,6 +746,11 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c)
c->ases |= MIPS_ASE_MIPSMT;
if (config3 & MIPS_CONF3_ULRI)
c->options |= MIPS_CPU_ULRI;
+ if (config3 & MIPS_CONF3_ISA)
+ c->options |= MIPS_CPU_MICROMIPS;
+#ifdef CONFIG_CPU_MICROMIPS
+ write_c0_config3(read_c0_config3() | MIPS_CONF3_ISA_OE);
+#endif
return config3 & MIPS_CONF_M;
}
@@ -838,6 +844,10 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
c->cputype = CPU_14K;
__cpu_name[cpu] = "MIPS 14Kc";
break;
+ case PRID_IMP_14KE:
+ c->cputype = CPU_14KE;
+ __cpu_name[cpu] = "MIPS 14KEc";
+ break;
case PRID_IMP_1004K:
c->cputype = CPU_1004K;
__cpu_name[cpu] = "MIPS 1004Kc";
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 9cd86fa..821a8bd 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1074,6 +1074,7 @@ static void __cpuinit probe_pcache(void)
bypass1074:
;
case CPU_14K:
+ case CPU_14KE:
case CPU_24K:
case CPU_34K:
case CPU_1004K:
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 87f57ae..64d631e 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -461,6 +461,7 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
if (cpu_has_mips_r2_exec_hazard) {
switch (current_cpu_type()) {
case CPU_14K:
+ case CPU_14KE:
case CPU_74K:
case CPU_1074K:
break;
@@ -515,6 +516,7 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
case CPU_4KC:
case CPU_4KEC:
case CPU_14K:
+ case CPU_14KE:
case CPU_SB1:
case CPU_SB1A:
case CPU_4KSC:
diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index b2e850e..09b485c 100644
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -79,6 +79,7 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
switch (current_cpu_type()) {
case CPU_5KC:
case CPU_14K:
+ case CPU_14KE:
case CPU_20KC:
case CPU_24K:
case CPU_25KF:
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index fdf3ce5..9ee2aaf 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -321,6 +321,10 @@ static int __init mipsxx_init(void)
op_model_mipsxx_ops.cpu_type = "mips/14K";
break;
+ case CPU_14KE:
+ op_model_mipsxx_ops.cpu_type = "mips/14KE";
+ break;
+
case CPU_20KC:
op_model_mipsxx_ops.cpu_type = "mips/20K";
break;
--
1.7.9.6
