Merge branch 'v4.4/topic/mm-kaslr-pax_usercopy' into linux-linaro-lsk-v4.4

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / kernel / cpuinfo.c

diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 706679d0a0b4227c4a7267cd85142192576d7ab3..95a6fae54740e003a0b9b947a15954c389548f9b 100644 (file)
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -22,6 +22,8 @@
 
 #include <linux/bitops.h>
 #include <linux/bug.h>
+#include <linux/compat.h>
+#include <linux/elf.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/personality.h>
@@ -30,6 +32,7 @@
 #include <linux/seq_file.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
+#include <linux/delay.h>
 
 /*
  * In case the boot CPU is hotpluggable, we record its initial state and
@@ -84,7 +87,8 @@ static const char *const compat_hwcap_str[] = {
        "idivt",
        "vfpd32",
        "lpae",
-       "evtstrm"
+       "evtstrm",
+       NULL
 };
 
 static const char *const compat_hwcap2_str[] = {
@@ -100,6 +104,7 @@ static const char *const compat_hwcap2_str[] = {
 static int c_show(struct seq_file *m, void *v)
 {
        int i, j;
+       bool compat = personality(current->personality) == PER_LINUX32;
 
        for_each_online_cpu(i) {
                struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
@@ -111,6 +116,13 @@ static int c_show(struct seq_file *m, void *v)
                 * "processor".  Give glibc what it expects.
                 */
                seq_printf(m, "processor\t: %d\n", i);
+               if (compat)
+                       seq_printf(m, "model name\t: ARMv8 Processor rev %d (%s)\n",
+                                  MIDR_REVISION(midr), COMPAT_ELF_PLATFORM);
+
+               seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+                          loops_per_jiffy / (500000UL/HZ),
+                          loops_per_jiffy / (5000UL/HZ) % 100);
 
                /*
                 * Dump out the common processor features in a single line.
@@ -119,7 +131,7 @@ static int c_show(struct seq_file *m, void *v)
                 * software which does already (at least for 32-bit).
                 */
                seq_puts(m, "Features\t:");
-               if (personality(current->personality) == PER_LINUX32) {
+               if (compat) {
 #ifdef CONFIG_COMPAT
                        for (j = 0; compat_hwcap_str[j]; j++)
                                if (compat_elf_hwcap & (1 << j))
@@ -196,35 +208,36 @@ static void __cpuinfo_store_cpu(struct cpuinfo_arm64 *info)
 {
        info->reg_cntfrq = arch_timer_get_cntfrq();
        info->reg_ctr = read_cpuid_cachetype();
-       info->reg_dczid = read_cpuid(DCZID_EL0);
+       info->reg_dczid = read_cpuid(SYS_DCZID_EL0);
        info->reg_midr = read_cpuid_id();
 
-       info->reg_id_aa64dfr0 = read_cpuid(ID_AA64DFR0_EL1);
-       info->reg_id_aa64dfr1 = read_cpuid(ID_AA64DFR1_EL1);
-       info->reg_id_aa64isar0 = read_cpuid(ID_AA64ISAR0_EL1);
-       info->reg_id_aa64isar1 = read_cpuid(ID_AA64ISAR1_EL1);
-       info->reg_id_aa64mmfr0 = read_cpuid(ID_AA64MMFR0_EL1);
-       info->reg_id_aa64mmfr1 = read_cpuid(ID_AA64MMFR1_EL1);
-       info->reg_id_aa64pfr0 = read_cpuid(ID_AA64PFR0_EL1);
-       info->reg_id_aa64pfr1 = read_cpuid(ID_AA64PFR1_EL1);
-
-       info->reg_id_dfr0 = read_cpuid(ID_DFR0_EL1);
-       info->reg_id_isar0 = read_cpuid(ID_ISAR0_EL1);
-       info->reg_id_isar1 = read_cpuid(ID_ISAR1_EL1);
-       info->reg_id_isar2 = read_cpuid(ID_ISAR2_EL1);
-       info->reg_id_isar3 = read_cpuid(ID_ISAR3_EL1);
-       info->reg_id_isar4 = read_cpuid(ID_ISAR4_EL1);
-       info->reg_id_isar5 = read_cpuid(ID_ISAR5_EL1);
-       info->reg_id_mmfr0 = read_cpuid(ID_MMFR0_EL1);
-       info->reg_id_mmfr1 = read_cpuid(ID_MMFR1_EL1);
-       info->reg_id_mmfr2 = read_cpuid(ID_MMFR2_EL1);
-       info->reg_id_mmfr3 = read_cpuid(ID_MMFR3_EL1);
-       info->reg_id_pfr0 = read_cpuid(ID_PFR0_EL1);
-       info->reg_id_pfr1 = read_cpuid(ID_PFR1_EL1);
-
-       info->reg_mvfr0 = read_cpuid(MVFR0_EL1);
-       info->reg_mvfr1 = read_cpuid(MVFR1_EL1);
-       info->reg_mvfr2 = read_cpuid(MVFR2_EL1);
+       info->reg_id_aa64dfr0 = read_cpuid(SYS_ID_AA64DFR0_EL1);
+       info->reg_id_aa64dfr1 = read_cpuid(SYS_ID_AA64DFR1_EL1);
+       info->reg_id_aa64isar0 = read_cpuid(SYS_ID_AA64ISAR0_EL1);
+       info->reg_id_aa64isar1 = read_cpuid(SYS_ID_AA64ISAR1_EL1);
+       info->reg_id_aa64mmfr0 = read_cpuid(SYS_ID_AA64MMFR0_EL1);
+       info->reg_id_aa64mmfr1 = read_cpuid(SYS_ID_AA64MMFR1_EL1);
+       info->reg_id_aa64mmfr2 = read_cpuid(SYS_ID_AA64MMFR2_EL1);
+       info->reg_id_aa64pfr0 = read_cpuid(SYS_ID_AA64PFR0_EL1);
+       info->reg_id_aa64pfr1 = read_cpuid(SYS_ID_AA64PFR1_EL1);
+
+       info->reg_id_dfr0 = read_cpuid(SYS_ID_DFR0_EL1);
+       info->reg_id_isar0 = read_cpuid(SYS_ID_ISAR0_EL1);
+       info->reg_id_isar1 = read_cpuid(SYS_ID_ISAR1_EL1);
+       info->reg_id_isar2 = read_cpuid(SYS_ID_ISAR2_EL1);
+       info->reg_id_isar3 = read_cpuid(SYS_ID_ISAR3_EL1);
+       info->reg_id_isar4 = read_cpuid(SYS_ID_ISAR4_EL1);
+       info->reg_id_isar5 = read_cpuid(SYS_ID_ISAR5_EL1);
+       info->reg_id_mmfr0 = read_cpuid(SYS_ID_MMFR0_EL1);
+       info->reg_id_mmfr1 = read_cpuid(SYS_ID_MMFR1_EL1);
+       info->reg_id_mmfr2 = read_cpuid(SYS_ID_MMFR2_EL1);
+       info->reg_id_mmfr3 = read_cpuid(SYS_ID_MMFR3_EL1);
+       info->reg_id_pfr0 = read_cpuid(SYS_ID_PFR0_EL1);
+       info->reg_id_pfr1 = read_cpuid(SYS_ID_PFR1_EL1);
+
+       info->reg_mvfr0 = read_cpuid(SYS_MVFR0_EL1);
+       info->reg_mvfr1 = read_cpuid(SYS_MVFR1_EL1);
+       info->reg_mvfr2 = read_cpuid(SYS_MVFR2_EL1);
 
        cpuinfo_detect_icache_policy(info);