arm64: Move /proc/cpuinfo handling code
This patch moves the /proc/cpuinfo handling code:
arch/arm64/kernel/{setup.c to cpuinfo.c}
No functional changes
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Tested-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Suzuki K. Poulose
Catalin Marinas
parent
cdcf817b7e
commit
12d11817ea
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@ -24,8 +24,11 @@
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#include <linux/bug.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/personality.h>
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#include <linux/preempt.h>
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#include <linux/printk.h>
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#include <linux/seq_file.h>
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#include <linux/sched.h>
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#include <linux/smp.h>
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/*
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@ -45,6 +48,127 @@ static char *icache_policy_str[] = {
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unsigned long __icache_flags;
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static const char *hwcap_str[] = {
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"fp",
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"asimd",
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"evtstrm",
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"aes",
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"pmull",
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"sha1",
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"sha2",
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"crc32",
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"atomics",
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NULL
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};
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#ifdef CONFIG_COMPAT
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static const char *compat_hwcap_str[] = {
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"swp",
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"half",
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"thumb",
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"26bit",
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"fastmult",
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"fpa",
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"vfp",
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"edsp",
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"java",
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"iwmmxt",
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"crunch",
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"thumbee",
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"neon",
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"vfpv3",
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"vfpv3d16",
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"tls",
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"vfpv4",
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"idiva",
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"idivt",
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"vfpd32",
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"lpae",
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"evtstrm"
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};
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static const char *compat_hwcap2_str[] = {
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"aes",
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"pmull",
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"sha1",
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"sha2",
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"crc32",
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NULL
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};
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#endif /* CONFIG_COMPAT */
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static int c_show(struct seq_file *m, void *v)
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{
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int i, j;
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for_each_online_cpu(i) {
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struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
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u32 midr = cpuinfo->reg_midr;
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/*
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* glibc reads /proc/cpuinfo to determine the number of
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* online processors, looking for lines beginning with
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* "processor". Give glibc what it expects.
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*/
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seq_printf(m, "processor\t: %d\n", i);
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/*
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* Dump out the common processor features in a single line.
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* Userspace should read the hwcaps with getauxval(AT_HWCAP)
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* rather than attempting to parse this, but there's a body of
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* software which does already (at least for 32-bit).
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*/
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seq_puts(m, "Features\t:");
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if (personality(current->personality) == PER_LINUX32) {
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#ifdef CONFIG_COMPAT
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for (j = 0; compat_hwcap_str[j]; j++)
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if (compat_elf_hwcap & (1 << j))
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seq_printf(m, " %s", compat_hwcap_str[j]);
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for (j = 0; compat_hwcap2_str[j]; j++)
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if (compat_elf_hwcap2 & (1 << j))
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seq_printf(m, " %s", compat_hwcap2_str[j]);
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#endif /* CONFIG_COMPAT */
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} else {
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for (j = 0; hwcap_str[j]; j++)
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if (elf_hwcap & (1 << j))
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seq_printf(m, " %s", hwcap_str[j]);
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}
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seq_puts(m, "\n");
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seq_printf(m, "CPU implementer\t: 0x%02x\n",
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MIDR_IMPLEMENTOR(midr));
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seq_printf(m, "CPU architecture: 8\n");
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seq_printf(m, "CPU variant\t: 0x%x\n", MIDR_VARIANT(midr));
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seq_printf(m, "CPU part\t: 0x%03x\n", MIDR_PARTNUM(midr));
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seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
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}
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < 1 ? (void *)1 : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return NULL;
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = c_show
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};
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static void cpuinfo_detect_icache_policy(struct cpuinfo_arm64 *info)
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{
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unsigned int cpu = smp_processor_id();
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@ -28,7 +28,6 @@
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#include <linux/console.h>
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#include <linux/cache.h>
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#include <linux/bootmem.h>
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#include <linux/seq_file.h>
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#include <linux/screen_info.h>
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#include <linux/init.h>
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#include <linux/kexec.h>
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@ -44,7 +43,6 @@
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#include <linux/of_fdt.h>
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#include <linux/of_platform.h>
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#include <linux/efi.h>
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#include <linux/personality.h>
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#include <linux/psci.h>
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#include <asm/acpi.h>
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@ -381,124 +379,3 @@ static int __init topology_init(void)
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return 0;
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}
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subsys_initcall(topology_init);
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static const char *hwcap_str[] = {
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"fp",
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"asimd",
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"evtstrm",
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"aes",
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"pmull",
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"sha1",
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"sha2",
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"crc32",
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"atomics",
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NULL
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};
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#ifdef CONFIG_COMPAT
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static const char *compat_hwcap_str[] = {
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"swp",
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"half",
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"thumb",
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"26bit",
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"fastmult",
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"fpa",
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"vfp",
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"edsp",
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"java",
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"iwmmxt",
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"crunch",
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"thumbee",
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"neon",
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"vfpv3",
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"vfpv3d16",
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"tls",
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"vfpv4",
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"idiva",
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"idivt",
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"vfpd32",
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"lpae",
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"evtstrm"
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};
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static const char *compat_hwcap2_str[] = {
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"aes",
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"pmull",
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"sha1",
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"sha2",
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"crc32",
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NULL
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};
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#endif /* CONFIG_COMPAT */
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static int c_show(struct seq_file *m, void *v)
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{
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int i, j;
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for_each_online_cpu(i) {
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struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
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u32 midr = cpuinfo->reg_midr;
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/*
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* glibc reads /proc/cpuinfo to determine the number of
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* online processors, looking for lines beginning with
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* "processor". Give glibc what it expects.
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*/
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seq_printf(m, "processor\t: %d\n", i);
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/*
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* Dump out the common processor features in a single line.
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* Userspace should read the hwcaps with getauxval(AT_HWCAP)
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* rather than attempting to parse this, but there's a body of
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* software which does already (at least for 32-bit).
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*/
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seq_puts(m, "Features\t:");
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if (personality(current->personality) == PER_LINUX32) {
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#ifdef CONFIG_COMPAT
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for (j = 0; compat_hwcap_str[j]; j++)
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if (compat_elf_hwcap & (1 << j))
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seq_printf(m, " %s", compat_hwcap_str[j]);
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for (j = 0; compat_hwcap2_str[j]; j++)
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if (compat_elf_hwcap2 & (1 << j))
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seq_printf(m, " %s", compat_hwcap2_str[j]);
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#endif /* CONFIG_COMPAT */
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} else {
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for (j = 0; hwcap_str[j]; j++)
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if (elf_hwcap & (1 << j))
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seq_printf(m, " %s", hwcap_str[j]);
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}
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seq_puts(m, "\n");
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seq_printf(m, "CPU implementer\t: 0x%02x\n",
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MIDR_IMPLEMENTOR(midr));
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seq_printf(m, "CPU architecture: 8\n");
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seq_printf(m, "CPU variant\t: 0x%x\n", MIDR_VARIANT(midr));
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seq_printf(m, "CPU part\t: 0x%03x\n", MIDR_PARTNUM(midr));
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seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
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}
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < 1 ? (void *)1 : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return NULL;
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = c_show
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};
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