1 files changed, 46 insertions, 38 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index da1d1aa20ad9..9a89bf4aefe1 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -383,6 +383,12 @@ void cpu_init(void)
                 BUG();
         }
 
+        /*
+         * This only works on resume and secondary cores. For booting on the
+         * boot cpu, smp_prepare_boot_cpu is called after percpu area setup.
+         */
+        set_my_cpu_offset(per_cpu_offset(cpu));
+
         cpu_proc_init();
 
         /*
@@ -426,13 +432,14 @@ int __cpu_logical_map[NR_CPUS];
 void __init smp_setup_processor_id(void)
 {
         int i;
-        u32 cpu = is_smp() ? read_cpuid_mpidr() & 0xff : 0;
+        u32 mpidr = is_smp() ? read_cpuid_mpidr() & MPIDR_HWID_BITMASK : 0;
+        u32 cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
 
         cpu_logical_map(0) = cpu;
-        for (i = 1; i < NR_CPUS; ++i)
+        for (i = 1; i < nr_cpu_ids; ++i)
                 cpu_logical_map(i) = i == cpu ? 0 : i;
 
-        printk(KERN_INFO "Booting Linux on physical CPU %d\n", cpu);
+        printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr);
 }
 
 static void __init setup_processor(void)
@@ -758,6 +765,7 @@ void __init setup_arch(char **cmdline_p)
 
         unflatten_device_tree();
 
+        arm_dt_init_cpu_maps();
 #ifdef CONFIG_SMP
         if (is_smp()) {
                 smp_set_ops(mdesc->smp);
@@ -841,12 +849,9 @@ static const char *hwcap_str[] = {
 
 static int c_show(struct seq_file *m, void *v)
 {
-        int i;
+        int i, j;
+        u32 cpuid;
 
-        seq_printf(m, "Processor\t: %s rev %d (%s)\n",
-                   cpu_name, read_cpuid_id() & 15, elf_platform);
-
-#if defined(CONFIG_SMP)
         for_each_online_cpu(i) {
                 /*
                  * glibc reads /proc/cpuinfo to determine the number of
@@ -854,45 +859,48 @@ static int c_show(struct seq_file *m, void *v)
                  * "processor".  Give glibc what it expects.
                  */
                 seq_printf(m, "processor\t: %d\n", i);
-                seq_printf(m, "BogoMIPS\t: %lu.%02lu\n\n",
+                cpuid = is_smp() ? per_cpu(cpu_data, i).cpuid : read_cpuid_id();
+                seq_printf(m, "model name\t: %s rev %d (%s)\n",
+                           cpu_name, cpuid & 15, elf_platform);
+
+#if defined(CONFIG_SMP)
+                seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
                            per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
                            (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);
-        }
-#else /* CONFIG_SMP */
-        seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
-                   loops_per_jiffy / (500000/HZ),
-                   (loops_per_jiffy / (5000/HZ)) % 100);
+#else
+                seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+                           loops_per_jiffy / (500000/HZ),
+                           (loops_per_jiffy / (5000/HZ)) % 100);
 #endif
+                /* dump out the processor features */
+                seq_puts(m, "Features\t: ");
 
-        /* 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]);
+                for (j = 0; hwcap_str[j]; j++)
+                        if (elf_hwcap & (1 << j))
+                                seq_printf(m, "%s ", hwcap_str[j]);
 
-        seq_printf(m, "\nCPU implementer\t: 0x%02x\n", read_cpuid_id() >> 24);
-        seq_printf(m, "CPU architecture: %s\n", proc_arch[cpu_architecture()]);
+                seq_printf(m, "\nCPU implementer\t: 0x%02x\n", cpuid >> 24);
+                seq_printf(m, "CPU architecture: %s\n",
+                           proc_arch[cpu_architecture()]);
 
-        if ((read_cpuid_id() & 0x0008f000) == 0x00000000) {
-                /* pre-ARM7 */
-                seq_printf(m, "CPU part\t: %07x\n", read_cpuid_id() >> 4);
-        } else {
-                if ((read_cpuid_id() & 0x0008f000) == 0x00007000) {
-                        /* ARM7 */
-                        seq_printf(m, "CPU variant\t: 0x%02x\n",
-                                   (read_cpuid_id() >> 16) & 127);
+                if ((cpuid & 0x0008f000) == 0x00000000) {
+                        /* pre-ARM7 */
+                        seq_printf(m, "CPU part\t: %07x\n", cpuid >> 4);
                 } else {
-                        /* post-ARM7 */
-                        seq_printf(m, "CPU variant\t: 0x%x\n",
-                                   (read_cpuid_id() >> 20) & 15);
+                        if ((cpuid & 0x0008f000) == 0x00007000) {
+                                /* ARM7 */
+                                seq_printf(m, "CPU variant\t: 0x%02x\n",
+                                           (cpuid >> 16) & 127);
+                        } else {
+                                /* post-ARM7 */
+                                seq_printf(m, "CPU variant\t: 0x%x\n",
+                                           (cpuid >> 20) & 15);
+                        }
+                        seq_printf(m, "CPU part\t: 0x%03x\n",
+                                   (cpuid >> 4) & 0xfff);
                 }
-                seq_printf(m, "CPU part\t: 0x%03x\n",
-                           (read_cpuid_id() >> 4) & 0xfff);
+                seq_printf(m, "CPU revision\t: %d\n\n", cpuid & 15);
         }
-        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);
         seq_printf(m, "Revision\t: %04x\n", system_rev);