1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited 4 */ 5 #include <linux/delay.h> 6 #include <linux/kernel.h> 7 #include <linux/sched.h> 8 #include <linux/seq_file.h> 9 #include <asm/bootinfo.h> 10 #include <asm/cpu.h> 11 #include <asm/cpu-features.h> 12 #include <asm/idle.h> 13 #include <asm/processor.h> 14 #include <asm/time.h> 15 16 static int show_cpuinfo(struct seq_file *m, void *v) 17 { 18 unsigned long n = (unsigned long) v - 1; 19 unsigned int isa = cpu_data[n].isa_level; 20 unsigned int version = cpu_data[n].processor_id & 0xff; 21 unsigned int fp_version = cpu_data[n].fpu_vers; 22 23 #ifdef CONFIG_SMP 24 if (!cpu_online(n)) 25 return 0; 26 #endif 27 28 /* 29 * For the first processor also print the system type 30 */ 31 if (n == 0) 32 seq_printf(m, "system type\t\t: %s\n\n", get_system_type()); 33 34 seq_printf(m, "processor\t\t: %ld\n", n); 35 seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package); 36 seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core); 37 seq_printf(m, "global_id\t\t: %d\n", cpu_data[n].global_id); 38 seq_printf(m, "CPU Family\t\t: %s\n", __cpu_family[n]); 39 seq_printf(m, "Model Name\t\t: %s\n", __cpu_full_name[n]); 40 seq_printf(m, "CPU Revision\t\t: 0x%02x\n", version); 41 seq_printf(m, "FPU Revision\t\t: 0x%02x\n", fp_version); 42 seq_printf(m, "CPU MHz\t\t\t: %llu.%02llu\n", 43 cpu_clock_freq / 1000000, (cpu_clock_freq / 10000) % 100); 44 seq_printf(m, "BogoMIPS\t\t: %llu.%02llu\n", 45 (lpj_fine * cpu_clock_freq / const_clock_freq) / (500000/HZ), 46 ((lpj_fine * cpu_clock_freq / const_clock_freq) / (5000/HZ)) % 100); 47 seq_printf(m, "TLB Entries\t\t: %d\n", cpu_data[n].tlbsize); 48 seq_printf(m, "Address Sizes\t\t: %d bits physical, %d bits virtual\n", 49 cpu_pabits + 1, cpu_vabits + 1); 50 51 seq_printf(m, "ISA\t\t\t:"); 52 if (isa & LOONGARCH_CPU_ISA_LA32R) 53 seq_printf(m, " loongarch32r"); 54 if (isa & LOONGARCH_CPU_ISA_LA32S) 55 seq_printf(m, " loongarch32s"); 56 if (isa & LOONGARCH_CPU_ISA_LA64) 57 seq_printf(m, " loongarch64"); 58 seq_printf(m, "\n"); 59 60 seq_printf(m, "Features\t\t:"); 61 if (cpu_has_cpucfg) seq_printf(m, " cpucfg"); 62 if (cpu_has_lam) seq_printf(m, " lam"); 63 if (cpu_has_ual) seq_printf(m, " ual"); 64 if (cpu_has_fpu) seq_printf(m, " fpu"); 65 if (cpu_has_lsx) seq_printf(m, " lsx"); 66 if (cpu_has_lasx) seq_printf(m, " lasx"); 67 if (cpu_has_crc32) seq_printf(m, " crc32"); 68 if (cpu_has_complex) seq_printf(m, " complex"); 69 if (cpu_has_crypto) seq_printf(m, " crypto"); 70 if (cpu_has_ptw) seq_printf(m, " ptw"); 71 if (cpu_has_lspw) seq_printf(m, " lspw"); 72 if (cpu_has_lvz) seq_printf(m, " lvz"); 73 if (cpu_has_lbt_x86) seq_printf(m, " lbt_x86"); 74 if (cpu_has_lbt_arm) seq_printf(m, " lbt_arm"); 75 if (cpu_has_lbt_mips) seq_printf(m, " lbt_mips"); 76 seq_printf(m, "\n"); 77 78 seq_printf(m, "Hardware Watchpoint\t: %s", str_yes_no(cpu_has_watch)); 79 if (cpu_has_watch) { 80 seq_printf(m, ", iwatch count: %d, dwatch count: %d", 81 cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_count); 82 } 83 84 seq_printf(m, "\n\n"); 85 86 return 0; 87 } 88 89 static void *c_start(struct seq_file *m, loff_t *pos) 90 { 91 unsigned long i = *pos; 92 93 return i < nr_cpu_ids ? (void *)(i + 1) : NULL; 94 } 95 96 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 97 { 98 ++*pos; 99 return c_start(m, pos); 100 } 101 102 static void c_stop(struct seq_file *m, void *v) 103 { 104 } 105 106 const struct seq_operations cpuinfo_op = { 107 .start = c_start, 108 .next = c_next, 109 .stop = c_stop, 110 .show = show_cpuinfo, 111 }; 112