diff options
| -rw-r--r-- | arch/arm64/kernel/setup.c | 40 |
1 files changed, 18 insertions, 22 deletions
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index edb146d01857..f6f0ccf35ae6 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -78,7 +78,6 @@ unsigned int compat_elf_hwcap2 __read_mostly; #endif static const char *cpu_name; -static const char *machine_name; phys_addr_t __fdt_pointer __initdata; /* @@ -310,8 +309,6 @@ static void __init setup_machine_fdt(phys_addr_t dt_phys) while (true) cpu_relax(); } - - machine_name = of_flat_dt_get_machine_name(); } /* @@ -450,10 +447,21 @@ static int c_show(struct seq_file *m, void *v) { int i; - seq_printf(m, "Processor\t: %s rev %d (%s)\n", - cpu_name, read_cpuid_id() & 15, ELF_PLATFORM); + /* + * Dump out the common processor features in a single line. Userspace + * should read the hwcaps with getauxval(AT_HWCAP) rather than + * attempting to parse this. + */ + seq_puts(m, "features\t:"); + for (i = 0; hwcap_str[i]; i++) + if (elf_hwcap & (1 << i)) + seq_printf(m, " %s", hwcap_str[i]); + seq_puts(m, "\n\n"); for_each_online_cpu(i) { + struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i); + u32 midr = cpuinfo->reg_midr; + /* * glibc reads /proc/cpuinfo to determine the number of * online processors, looking for lines beginning with @@ -462,25 +470,13 @@ static int c_show(struct seq_file *m, void *v) #ifdef CONFIG_SMP seq_printf(m, "processor\t: %d\n", i); #endif + seq_printf(m, "implementer\t: 0x%02x\n", + MIDR_IMPLEMENTOR(midr)); + seq_printf(m, "variant\t\t: 0x%x\n", MIDR_VARIANT(midr)); + seq_printf(m, "partnum\t\t: 0x%03x\n", MIDR_PARTNUM(midr)); + seq_printf(m, "revision\t: 0x%x\n\n", MIDR_REVISION(midr)); } - /* dump out the processor features */ - seq_puts(m, "Features\t: "); - - for (i = 0; hwcap_str[i]; i++) - if (elf_hwcap & (1 << i)) - seq_printf(m, "%s ", hwcap_str[i]); - - seq_printf(m, "\nCPU implementer\t: 0x%02x\n", read_cpuid_id() >> 24); - seq_printf(m, "CPU architecture: AArch64\n"); - seq_printf(m, "CPU variant\t: 0x%x\n", (read_cpuid_id() >> 20) & 15); - seq_printf(m, "CPU part\t: 0x%03x\n", (read_cpuid_id() >> 4) & 0xfff); - seq_printf(m, "CPU revision\t: %d\n", read_cpuid_id() & 15); - - seq_puts(m, "\n"); - - seq_printf(m, "Hardware\t: %s\n", machine_name); - return 0; } |