diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/avr32/kernel/cpu.c | 94 |
1 files changed, 68 insertions, 26 deletions
diff --git a/arch/avr32/kernel/cpu.c b/arch/avr32/kernel/cpu.c index 2714cf6..1461001 100644 --- a/arch/avr32/kernel/cpu.c +++ b/arch/avr32/kernel/cpu.c @@ -13,6 +13,7 @@ #include <linux/percpu.h> #include <linux/param.h> #include <linux/errno.h> +#include <linux/clk.h> #include <asm/setup.h> #include <asm/sysreg.h> @@ -187,9 +188,20 @@ static int __init topology_init(void) subsys_initcall(topology_init); +struct chip_id_map { + u16 mid; + u16 pn; + const char *name; +}; + +static const struct chip_id_map chip_names[] = { + { .mid = 0x1f, .pn = 0x1e82, .name = "AT32AP700x" }, +}; +#define NR_CHIP_NAMES ARRAY_SIZE(chip_names) + static const char *cpu_names[] = { "Morgan", - "AP7000", + "AP7", }; #define NR_CPU_NAMES ARRAY_SIZE(cpu_names) @@ -206,12 +218,32 @@ static const char *mmu_types[] = { "MPU" }; +static const char *cpu_feature_flags[] = { + "rmw", "dsp", "simd", "ocd", "perfctr", "java", "fpu", +}; + +static const char *get_chip_name(struct avr32_cpuinfo *cpu) +{ + unsigned int i; + unsigned int mid = avr32_get_manufacturer_id(cpu); + unsigned int pn = avr32_get_product_number(cpu); + + for (i = 0; i < NR_CHIP_NAMES; i++) { + if (chip_names[i].mid == mid && chip_names[i].pn == pn) + return chip_names[i].name; + } + + return "(unknown)"; +} + void __init setup_processor(void) { unsigned long config0, config1; unsigned long features; unsigned cpu_id, cpu_rev, arch_id, arch_rev, mmu_type; + unsigned device_id; unsigned tmp; + unsigned i; config0 = sysreg_read(CONFIG0); config1 = sysreg_read(CONFIG1); @@ -221,11 +253,14 @@ void __init setup_processor(void) arch_rev = SYSREG_BFEXT(AR, config0); mmu_type = SYSREG_BFEXT(MMUT, config0); + device_id = ocd_read(DID); + boot_cpu_data.arch_type = arch_id; boot_cpu_data.cpu_type = cpu_id; boot_cpu_data.arch_revision = arch_rev; boot_cpu_data.cpu_revision = cpu_rev; boot_cpu_data.tlb_config = mmu_type; + boot_cpu_data.device_id = device_id; tmp = SYSREG_BFEXT(ILSZ, config1); if (tmp) { @@ -247,41 +282,34 @@ void __init setup_processor(void) return; } - printk ("CPU: %s [%02x] revision %d (%s revision %d)\n", + printk ("CPU: %s chip revision %c\n", get_chip_name(&boot_cpu_data), + avr32_get_chip_revision(&boot_cpu_data) + 'A'); + printk ("CPU: %s [%02x] core revision %d (%s arch revision %d)\n", cpu_names[cpu_id], cpu_id, cpu_rev, arch_names[arch_id], arch_rev); printk ("CPU: MMU configuration: %s\n", mmu_types[mmu_type]); printk ("CPU: features:"); features = 0; - if (config0 & SYSREG_BIT(CONFIG0_R)) { + if (config0 & SYSREG_BIT(CONFIG0_R)) features |= AVR32_FEATURE_RMW; - printk(" rmw"); - } - if (config0 & SYSREG_BIT(CONFIG0_D)) { + if (config0 & SYSREG_BIT(CONFIG0_D)) features |= AVR32_FEATURE_DSP; - printk(" dsp"); - } - if (config0 & SYSREG_BIT(CONFIG0_S)) { + if (config0 & SYSREG_BIT(CONFIG0_S)) features |= AVR32_FEATURE_SIMD; - printk(" simd"); - } - if (config0 & SYSREG_BIT(CONFIG0_O)) { + if (config0 & SYSREG_BIT(CONFIG0_O)) features |= AVR32_FEATURE_OCD; - printk(" ocd"); - } - if (config0 & SYSREG_BIT(CONFIG0_P)) { + if (config0 & SYSREG_BIT(CONFIG0_P)) features |= AVR32_FEATURE_PCTR; - printk(" perfctr"); - } - if (config0 & SYSREG_BIT(CONFIG0_J)) { + if (config0 & SYSREG_BIT(CONFIG0_J)) features |= AVR32_FEATURE_JAVA; - printk(" java"); - } - if (config0 & SYSREG_BIT(CONFIG0_F)) { + if (config0 & SYSREG_BIT(CONFIG0_F)) features |= AVR32_FEATURE_FPU; - printk(" fpu"); - } + + for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++) + if (features & (1 << i)) + printk(" %s", cpu_feature_flags[i]); + printk("\n"); boot_cpu_data.features = features; } @@ -291,6 +319,8 @@ static int c_show(struct seq_file *m, void *v) { unsigned int icache_size, dcache_size; unsigned int cpu = smp_processor_id(); + unsigned int freq; + unsigned int i; icache_size = boot_cpu_data.icache.ways * boot_cpu_data.icache.sets * @@ -301,15 +331,21 @@ static int c_show(struct seq_file *m, void *v) seq_printf(m, "processor\t: %d\n", cpu); + seq_printf(m, "chip type\t: %s revision %c\n", + get_chip_name(&boot_cpu_data), + avr32_get_chip_revision(&boot_cpu_data) + 'A'); if (boot_cpu_data.arch_type < NR_ARCH_NAMES) - seq_printf(m, "cpu family\t: %s revision %d\n", + seq_printf(m, "cpu arch\t: %s revision %d\n", arch_names[boot_cpu_data.arch_type], boot_cpu_data.arch_revision); if (boot_cpu_data.cpu_type < NR_CPU_NAMES) - seq_printf(m, "cpu type\t: %s revision %d\n", + seq_printf(m, "cpu core\t: %s revision %d\n", cpu_names[boot_cpu_data.cpu_type], boot_cpu_data.cpu_revision); + freq = (clk_get_rate(boot_cpu_data.clk) + 500) / 1000; + seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, freq % 1000); + seq_printf(m, "i-cache\t\t: %dK (%u ways x %u sets x %u)\n", icache_size >> 10, boot_cpu_data.icache.ways, @@ -320,7 +356,13 @@ static int c_show(struct seq_file *m, void *v) boot_cpu_data.dcache.ways, boot_cpu_data.dcache.sets, boot_cpu_data.dcache.linesz); - seq_printf(m, "bogomips\t: %lu.%02lu\n", + + seq_printf(m, "features\t:"); + for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++) + if (boot_cpu_data.features & (1 << i)) + seq_printf(m, " %s", cpu_feature_flags[i]); + + seq_printf(m, "\nbogomips\t: %lu.%02lu\n", boot_cpu_data.loops_per_jiffy / (500000/HZ), (boot_cpu_data.loops_per_jiffy / (5000/HZ)) % 100); |