MIPS: Add support for the M14KEc core.
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4682/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index c507b93..00171cd 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -98,6 +98,9 @@
#ifndef cpu_has_rixi
#define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
#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 90112ad..2de2fee 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_M14KC 0x9c00
+#define PRID_IMP_M14KEC 0x9e00
/*
* These are the PRID's for when 23:16 == PRID_COMP_SIBYTE
@@ -264,6 +265,7 @@
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_LOONGSON1, CPU_M14KC,
+ CPU_M14KEC,
/*
* MIPS64 class processors
@@ -322,6 +324,7 @@
#define MIPS_CPU_ULRI 0x00200000 /* CPU has ULRI feature */
#define MIPS_CPU_PCI 0x00400000 /* CPU has Perf Ctr Int indicator */
#define MIPS_CPU_RIXI 0x00800000 /* CPU has TLB Read/eXec Inhibit */
+#define MIPS_CPU_MICROMIPS 0x01000000 /* CPU has microMIPS capability */
/*
* CPU ASE encodings
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 7e4e6f8..3e36745 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -595,6 +595,7 @@
#define MIPS_CONF3_DSP2P (_ULCAST_(1) << 11)
#define MIPS_CONF3_RXI (_ULCAST_(1) << 12)
#define MIPS_CONF3_ULRI (_ULCAST_(1) << 13)
+#define MIPS_CONF3_ISA (_ULCAST_(3) << 14)
#define MIPS_CONF4_MMUSIZEEXT (_ULCAST_(255) << 0)
#define MIPS_CONF4_MMUEXTDEF (_ULCAST_(3) << 14)
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9f31334..ba16902 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -201,6 +201,7 @@
break;
case CPU_M14KC:
+ case CPU_M14KEC:
case CPU_24K:
case CPU_34K:
case CPU_1004K:
@@ -439,6 +440,8 @@
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;
return config3 & MIPS_CONF_M;
}
@@ -861,6 +864,10 @@
c->cputype = CPU_M14KC;
__cpu_name[cpu] = "MIPS M14Kc";
break;
+ case PRID_IMP_M14KEC:
+ c->cputype = CPU_M14KEC;
+ __cpu_name[cpu] = "MIPS M14KEc";
+ break;
case PRID_IMP_1004K:
c->cputype = CPU_1004K;
__cpu_name[cpu] = "MIPS 1004Kc";
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index 07dff54..239ae03 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -73,6 +73,7 @@
if (cpu_has_dsp) seq_printf(m, "%s", " dsp");
if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2");
if (cpu_has_mipsmt) seq_printf(m, "%s", " mt");
+ if (cpu_has_mmips) seq_printf(m, "%s", " micromips");
seq_printf(m, "\n");
seq_printf(m, "shadow register sets\t: %d\n",
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 0f7d788..606e828 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1057,6 +1057,7 @@
break;
case CPU_M14KC:
+ case CPU_M14KEC:
case CPU_24K:
case CPU_34K:
case CPU_74K:
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 1c8ac49..074d659 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -581,6 +581,7 @@
case CPU_4KC:
case CPU_4KEC:
case CPU_M14KC:
+ case CPU_M14KEC:
case CPU_SB1:
case CPU_SB1A:
case CPU_4KSC:
diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index e32db1f..fc41aa9 100644
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -78,6 +78,7 @@
switch (current_cpu_type()) {
case CPU_5KC:
case CPU_M14KC:
+ case CPU_M14KEC:
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 7862546..18c3afe 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -351,6 +351,10 @@
op_model_mipsxx_ops.cpu_type = "mips/M14Kc";
break;
+ case CPU_M14KEC:
+ op_model_mipsxx_ops.cpu_type = "mips/M14KEc";
+ break;
+
case CPU_20KC:
op_model_mipsxx_ops.cpu_type = "mips/20K";
break;