1 /* 2 * Copyright (C) 1995, 1996, 2001 Ralf Baechle 3 * Copyright (C) 2001, 2004 MIPS Technologies, Inc. 4 * Copyright (C) 2004 Maciej W. Rozycki 5 */ 6 #include <linux/delay.h> 7 #include <linux/kernel.h> 8 #include <linux/sched.h> 9 #include <linux/seq_file.h> 10 #include <asm/bootinfo.h> 11 #include <asm/cpu.h> 12 #include <asm/cpu-features.h> 13 #include <asm/idle.h> 14 #include <asm/mipsregs.h> 15 #include <asm/processor.h> 16 #include <asm/prom.h> 17 18 unsigned int vced_count, vcei_count; 19 20 static int show_cpuinfo(struct seq_file *m, void *v) 21 { 22 unsigned long n = (unsigned long) v - 1; 23 unsigned int version = cpu_data[n].processor_id; 24 unsigned int fp_vers = cpu_data[n].fpu_id; 25 char fmt [64]; 26 int i; 27 28 #ifdef CONFIG_SMP 29 if (!cpu_online(n)) 30 return 0; 31 #endif 32 33 /* 34 * For the first processor also print the system type 35 */ 36 if (n == 0) { 37 seq_printf(m, "system type\t\t: %s\n", get_system_type()); 38 if (mips_get_machine_name()) 39 seq_printf(m, "machine\t\t\t: %s\n", 40 mips_get_machine_name()); 41 } 42 43 seq_printf(m, "processor\t\t: %ld\n", n); 44 sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", 45 cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : ""); 46 seq_printf(m, fmt, __cpu_name[n], 47 (version >> 4) & 0x0f, version & 0x0f, 48 (fp_vers >> 4) & 0x0f, fp_vers & 0x0f); 49 seq_printf(m, "BogoMIPS\t\t: %u.%02u\n", 50 cpu_data[n].udelay_val / (500000/HZ), 51 (cpu_data[n].udelay_val / (5000/HZ)) % 100); 52 seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no"); 53 seq_printf(m, "microsecond timers\t: %s\n", 54 cpu_has_counter ? "yes" : "no"); 55 seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize); 56 seq_printf(m, "extra interrupt vector\t: %s\n", 57 cpu_has_divec ? "yes" : "no"); 58 seq_printf(m, "hardware watchpoint\t: %s", 59 cpu_has_watch ? "yes, " : "no\n"); 60 if (cpu_has_watch) { 61 seq_printf(m, "count: %d, address/irw mask: [", 62 cpu_data[n].watch_reg_count); 63 for (i = 0; i < cpu_data[n].watch_reg_count; i++) 64 seq_printf(m, "%s0x%04x", i ? ", " : "" , 65 cpu_data[n].watch_reg_masks[i]); 66 seq_printf(m, "]\n"); 67 } 68 if (cpu_has_mips_r) { 69 seq_printf(m, "isa\t\t\t: mips1"); 70 if (cpu_has_mips_2) 71 seq_printf(m, "%s", " mips2"); 72 if (cpu_has_mips_3) 73 seq_printf(m, "%s", " mips3"); 74 if (cpu_has_mips_4) 75 seq_printf(m, "%s", " mips4"); 76 if (cpu_has_mips_5) 77 seq_printf(m, "%s", " mips5"); 78 if (cpu_has_mips32r1) 79 seq_printf(m, "%s", " mips32r1"); 80 if (cpu_has_mips32r2) 81 seq_printf(m, "%s", " mips32r2"); 82 if (cpu_has_mips64r1) 83 seq_printf(m, "%s", " mips64r1"); 84 if (cpu_has_mips64r2) 85 seq_printf(m, "%s", " mips64r2"); 86 seq_printf(m, "\n"); 87 } 88 89 seq_printf(m, "ASEs implemented\t:"); 90 if (cpu_has_mips16) seq_printf(m, "%s", " mips16"); 91 if (cpu_has_mdmx) seq_printf(m, "%s", " mdmx"); 92 if (cpu_has_mips3d) seq_printf(m, "%s", " mips3d"); 93 if (cpu_has_smartmips) seq_printf(m, "%s", " smartmips"); 94 if (cpu_has_dsp) seq_printf(m, "%s", " dsp"); 95 if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2"); 96 if (cpu_has_mipsmt) seq_printf(m, "%s", " mt"); 97 if (cpu_has_mmips) seq_printf(m, "%s", " micromips"); 98 if (cpu_has_vz) seq_printf(m, "%s", " vz"); 99 seq_printf(m, "\n"); 100 101 if (cpu_has_mmips) { 102 seq_printf(m, "micromips kernel\t: %s\n", 103 (read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no"); 104 } 105 seq_printf(m, "shadow register sets\t: %d\n", 106 cpu_data[n].srsets); 107 seq_printf(m, "kscratch registers\t: %d\n", 108 hweight8(cpu_data[n].kscratch_mask)); 109 seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core); 110 111 sprintf(fmt, "VCE%%c exceptions\t\t: %s\n", 112 cpu_has_vce ? "%u" : "not available"); 113 seq_printf(m, fmt, 'D', vced_count); 114 seq_printf(m, fmt, 'I', vcei_count); 115 seq_printf(m, "\n"); 116 117 return 0; 118 } 119 120 static void *c_start(struct seq_file *m, loff_t *pos) 121 { 122 unsigned long i = *pos; 123 124 return i < NR_CPUS ? (void *) (i + 1) : NULL; 125 } 126 127 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 128 { 129 ++*pos; 130 return c_start(m, pos); 131 } 132 133 static void c_stop(struct seq_file *m, void *v) 134 { 135 } 136 137 const struct seq_operations cpuinfo_op = { 138 .start = c_start, 139 .next = c_next, 140 .stop = c_stop, 141 .show = show_cpuinfo, 142 }; 143