In /proc/cpuinfo, we keep "cpu model" as is, since GCC should use it
for -march=native. Besides, we add __cpu_full_name[] to describe the
processor in a more human-readable manner. The full name is displayed
as "model name" in cpuinfo, which is needed by some userspace tools
such as gnome-system-monitor.
This is only used by Loongson now (ICT is dropped in cpu name, and cpu
name can be overwritten by BIOS).
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
---
arch/mips/include/asm/cpu-info.h | 2 ++
arch/mips/include/asm/mach-loongson64/boot_param.h | 1 +
arch/mips/kernel/cpu-probe.c | 25 ++++++++++++++++------
arch/mips/kernel/proc.c | 4 ++++
arch/mips/loongson64/common/env.c | 18 ++++++++++++++++
5 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h
index cd6efb0..8a8a414 100644
--- a/arch/mips/include/asm/cpu-info.h
+++ b/arch/mips/include/asm/cpu-info.h
@@ -121,7 +121,9 @@ extern void cpu_probe(void);
extern void cpu_report(void);
extern const char *__cpu_name[];
+extern const char *__cpu_full_name[];
#define cpu_name_string() __cpu_name[raw_smp_processor_id()]
+#define cpu_full_name_string() __cpu_full_name[raw_smp_processor_id()]
struct seq_file;
struct notifier_block;
diff --git a/arch/mips/include/asm/mach-loongson64/boot_param.h b/arch/mips/include/asm/mach-loongson64/boot_param.h
index 9f9bb9c..b7ed31b 100644
--- a/arch/mips/include/asm/mach-loongson64/boot_param.h
+++ b/arch/mips/include/asm/mach-loongson64/boot_param.h
@@ -57,6 +57,7 @@ struct efi_cpuinfo_loongson {
u16 reserved_cores_mask;
u32 cpu_clock_freq; /* cpu_clock */
u32 nr_cpus;
+ char cpuname[64];
} __packed;
#define MAX_UARTS 64
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 410fb7c..8c84e42 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1473,30 +1473,40 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
switch (c->processor_id & PRID_REV_MASK) {
case PRID_REV_LOONGSON2E:
c->cputype = CPU_LOONGSON2;
- __cpu_name[cpu] = "ICT Loongson-2";
+ __cpu_name[cpu] = "Loongson-2";
set_elf_platform(cpu, "loongson2e");
set_isa(c, MIPS_CPU_ISA_III);
c->fpu_msk31 |= FPU_CSR_CONDX;
+ __cpu_full_name[cpu] = "Loongson-2E";
break;
case PRID_REV_LOONGSON2F:
c->cputype = CPU_LOONGSON2;
- __cpu_name[cpu] = "ICT Loongson-2";
+ __cpu_name[cpu] = "Loongson-2";
set_elf_platform(cpu, "loongson2f");
set_isa(c, MIPS_CPU_ISA_III);
c->fpu_msk31 |= FPU_CSR_CONDX;
+ __cpu_full_name[cpu] = "Loongson-2F";
break;
case PRID_REV_LOONGSON3A_R1:
c->cputype = CPU_LOONGSON3;
- __cpu_name[cpu] = "ICT Loongson-3";
+ __cpu_name[cpu] = "Loongson-3";
set_elf_platform(cpu, "loongson3a");
set_isa(c, MIPS_CPU_ISA_M64R1);
+ __cpu_full_name[cpu] = "Loongson-3A R1 (Loongson-3A1000)";
break;
case PRID_REV_LOONGSON3B_R1:
+ c->cputype = CPU_LOONGSON3;
+ __cpu_name[cpu] = "Loongson-3";
+ set_elf_platform(cpu, "loongson3b");
+ set_isa(c, MIPS_CPU_ISA_M64R1);
+ __cpu_full_name[cpu] = "Loongson-3B R1 (Loongson-3B1000)";
+ break;
case PRID_REV_LOONGSON3B_R2:
c->cputype = CPU_LOONGSON3;
- __cpu_name[cpu] = "ICT Loongson-3";
+ __cpu_name[cpu] = "Loongson-3";
set_elf_platform(cpu, "loongson3b");
set_isa(c, MIPS_CPU_ISA_M64R1);
+ __cpu_full_name[cpu] = "Loongson-3B R2 (Loongson-3B1500)";
break;
}
@@ -1827,15 +1837,17 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
switch (c->processor_id & PRID_REV_MASK) {
case PRID_REV_LOONGSON3A_R2:
c->cputype = CPU_LOONGSON3;
- __cpu_name[cpu] = "ICT Loongson-3";
+ __cpu_name[cpu] = "Loongson-3";
set_elf_platform(cpu, "loongson3a");
set_isa(c, MIPS_CPU_ISA_M64R2);
+ __cpu_full_name[cpu] = "Loongson-3A R2 (Loongson-3A2000)";
break;
case PRID_REV_LOONGSON3A_R3:
c->cputype = CPU_LOONGSON3;
- __cpu_name[cpu] = "ICT Loongson-3";
+ __cpu_name[cpu] = "Loongson-3";
set_elf_platform(cpu, "loongson3a");
set_isa(c, MIPS_CPU_ISA_M64R2);
+ __cpu_full_name[cpu] = "Loongson-3A R3 (Loongson-3A3000)";
break;
}
@@ -1955,6 +1967,7 @@ EXPORT_SYMBOL(__ua_limit);
#endif
const char *__cpu_name[NR_CPUS];
+const char *__cpu_full_name[NR_CPUS];
const char *__elf_platform;
void cpu_probe(void)
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index 4eff2ae..78db63a 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -14,6 +14,7 @@
#include <asm/mipsregs.h>
#include <asm/processor.h>
#include <asm/prom.h>
+#include <asm/time.h>
unsigned int vced_count, vcei_count;
@@ -62,6 +63,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, fmt, __cpu_name[n],
(version >> 4) & 0x0f, version & 0x0f,
(fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
+ if (__cpu_full_name[n])
+ seq_printf(m, "model name\t\t: %s @ %uMHz\n",
+ __cpu_full_name[n], mips_hpt_frequency / 500000);
seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
cpu_data[n].udelay_val / (500000/HZ),
(cpu_data[n].udelay_val / (5000/HZ)) % 100);
diff --git a/arch/mips/loongson64/common/env.c b/arch/mips/loongson64/common/env.c
index 1e8a955..9ee24ea 100644
--- a/arch/mips/loongson64/common/env.c
+++ b/arch/mips/loongson64/common/env.c
@@ -25,6 +25,7 @@
u32 cpu_clock_freq;
EXPORT_SYMBOL(cpu_clock_freq);
+static char cpu_full_name[64];
struct efi_memory_map_loongson *loongson_memmap;
struct loongson_system_configuration loongson_sysconf;
@@ -151,6 +152,8 @@ void __init prom_init_env(void)
loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus +
loongson_sysconf.cores_per_node - 1) /
loongson_sysconf.cores_per_node;
+ if (!strncmp(ecpu->cpuname, "Loongson", 8))
+ strncpy(cpu_full_name, ecpu->cpuname, 64);
loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
@@ -212,3 +215,18 @@ void __init prom_init_env(void)
}
pr_info("CpuClock = %u\n", cpu_clock_freq);
}
+
+static int __init overwrite_cpu_fullname(void)
+{
+ int cpu;
+
+ if (cpu_full_name[0] == 0)
+ return 0;
+
+ for(cpu = 0; cpu < NR_CPUS; cpu++)
+ __cpu_full_name[cpu] = cpu_full_name;
+
+ return 0;
+}
+
+core_initcall(overwrite_cpu_fullname);
--
2.7.0
