@@ -116,7 +116,9 @@ 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;
@@ -58,6 +58,7 @@ 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
@@ -26,6 +26,8 @@ extern spinlock_t rtc_lock;
*/
extern void plat_time_init(void);
+extern unsigned int mips_cpu_frequency;
+
/*
* mips_hpt_frequency - must be set if you intend to use an R4k-compatible
* counter as a timer interrupt source.
@@ -1560,30 +1560,40 @@ 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;
}
@@ -1934,16 +1944,18 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
case PRID_REV_LOONGSON3A_R2_0:
case PRID_REV_LOONGSON3A_R2_1:
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_0:
case PRID_REV_LOONGSON3A_R3_1:
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;
}
@@ -2063,6 +2075,7 @@ 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)
@@ -15,6 +15,7 @@
#include <asm/mipsregs.h>
#include <asm/processor.h>
#include <asm/prom.h>
+#include <asm/time.h>
unsigned int vced_count, vcei_count;
@@ -63,6 +64,11 @@ 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\n", __cpu_full_name[n]);
+ if (mips_cpu_frequency)
+ seq_printf(m, "CPU MHz\t\t\t: %u.%02u\n",
+ mips_cpu_frequency / 1000000, (mips_cpu_frequency / 10000) % 100);
seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
cpu_data[n].udelay_val / (500000/HZ),
(cpu_data[n].udelay_val / (5000/HZ)) % 100);
@@ -54,6 +54,8 @@ EXPORT_SYMBOL(perf_irq);
* 2) calculate a couple of cached variables for later usage
*/
+unsigned int mips_cpu_frequency;
+EXPORT_SYMBOL_GPL(mips_cpu_frequency);
unsigned int mips_hpt_frequency;
EXPORT_SYMBOL_GPL(mips_hpt_frequency);
@@ -18,6 +18,7 @@
* option) any later version.
*/
#include <linux/export.h>
+#include <asm/time.h>
#include <asm/bootinfo.h>
#include <loongson.h>
#include <boot_param.h>
@@ -25,6 +26,7 @@
u32 cpu_clock_freq;
EXPORT_SYMBOL(cpu_clock_freq);
+char cpu_full_name[64];
struct efi_memory_map_loongson *loongson_memmap;
struct loongson_system_configuration loongson_sysconf;
@@ -45,6 +47,7 @@ do { \
void __init prom_init_env(void)
{
/* pmon passes arguments in 32bit pointers */
+ char freq[12];
unsigned int processor_id;
#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
@@ -151,6 +154,10 @@ 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, sizeof(cpu_full_name));
+ if (cpu_full_name[0] == 0)
+ strncpy(cpu_full_name, __cpu_full_name[0], sizeof(cpu_full_name));
loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
@@ -212,5 +219,11 @@ void __init prom_init_env(void)
break;
}
}
+ mips_cpu_frequency = cpu_clock_freq;
pr_info("CpuClock = %u\n", cpu_clock_freq);
+
+ /* Append default cpu frequency with round-off */
+ sprintf(freq, " @ %uMHz", (cpu_clock_freq + 500000) / 1000000);
+ strncat(cpu_full_name, freq, sizeof(cpu_full_name));
+ __cpu_full_name[0] = cpu_full_name;
}
@@ -341,6 +341,7 @@ static void loongson3_init_secondary(void)
initcount = core0_c0count[cpu] + i/2;
write_c0_count(initcount);
+ __cpu_full_name[cpu] = cpu_full_name;
}
static void loongson3_smp_finish(void)
@@ -3,6 +3,7 @@
#define __LOONGSON_SMP_H_
/* for Loongson-3 smp support */
+extern char cpu_full_name[64];
extern unsigned long long smp_group[4];
/* 4 groups(nodes) in maximum in numa case */
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. The CPU frequency in "model name" is the default value (highest), and there is also a "CPU MHz" whose value can be changed by cpufreq. This is only used by Loongson now (ICT is dropped in cpu name, and cpu name can be overwritten by BIOS). Why drop ICT? At the beginning, Loongson is designed by ICT, but now all Loongson processors is designed by "Loongson Technology Corporation Limited" which is independent from ICT. We have search the code in https://codesearch.debian.net/, and the result is: 1, GCC searches the "cpu model" in cpuinfo, but it only matches "Loongson-2 V0.2" and so on, so drop "ICT" is comfortable; 2, Debian Installer searches the "cpu model" in cpuinfo and matches "ICT Loongson", but Yunqiang Su is modifying the code; 3, Valgrind searches the "cpu model" in cpuinfo and matches "ICT Loongson", and we are planning to fix it up. Signed-off-by: Huacai Chen <chenhc@lemote.com> --- arch/mips/include/asm/cpu-info.h | 2 ++ arch/mips/include/asm/mach-loongson64/boot_param.h | 1 + arch/mips/include/asm/time.h | 2 ++ arch/mips/kernel/cpu-probe.c | 25 ++++++++++++++++------ arch/mips/kernel/proc.c | 6 ++++++ arch/mips/kernel/time.c | 2 ++ arch/mips/loongson64/common/env.c | 13 +++++++++++ arch/mips/loongson64/loongson-3/smp.c | 1 + arch/mips/loongson64/loongson-3/smp.h | 1 + 9 files changed, 47 insertions(+), 6 deletions(-)