1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (c) 2015 Google, Inc 4 * Written by Simon Glass <sjg@chromium.org> 5 * Copyright (c) 2017 ��lvaro Fern��ndez Rojas <noltari@gmail.com> 6 */ 7 8#include <common.h> 9#include <command.h> 10#include <cpu.h> 11#include <display_options.h> 12#include <dm.h> 13#include <errno.h> 14 15static const char *cpu_feature_name[CPU_FEAT_COUNT] = { 16 "L1 cache", 17 "MMU", 18 "Microcode", 19 "Device ID", 20}; 21 22static int print_cpu_list(bool detail) 23{ 24 struct udevice *dev; 25 char buf[100]; 26 27 for (uclass_first_device(UCLASS_CPU, &dev); 28 dev; 29 uclass_next_device(&dev)) { 30 struct cpu_plat *plat = dev_get_parent_plat(dev); 31 struct cpu_info info; 32 bool first = true; 33 int ret, i; 34 35 ret = cpu_get_desc(dev, buf, sizeof(buf)); 36 printf("%3d: %-10s %s\n", dev_seq(dev), dev->name, 37 ret ? "<no description>" : buf); 38 if (!detail) 39 continue; 40 ret = cpu_get_info(dev, &info); 41 if (ret) { 42 printf("\t(no detail available"); 43 if (ret != -ENOSYS) 44 printf(": err=%d", ret); 45 printf(")\n"); 46 continue; 47 } 48 printf("\tID = %d, freq = ", plat->cpu_id); 49 print_freq(info.cpu_freq, ""); 50 for (i = 0; i < CPU_FEAT_COUNT; i++) { 51 if (info.features & (1 << i)) { 52 printf("%s%s", first ? ": " : ", ", 53 cpu_feature_name[i]); 54 first = false; 55 } 56 } 57 printf("\n"); 58 if (info.features & (1 << CPU_FEAT_UCODE)) 59 printf("\tMicrocode version %#x\n", 60 plat->ucode_version); 61 if (info.features & (1 << CPU_FEAT_DEVICE_ID)) 62 printf("\tDevice ID %#lx\n", plat->device_id); 63 } 64 65 return 0; 66} 67 68static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc, 69 char *const argv[]) 70{ 71 if (print_cpu_list(false)) 72 return CMD_RET_FAILURE; 73 74 return 0; 75} 76 77static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc, 78 char *const argv[]) 79{ 80 if (print_cpu_list(true)) 81 return CMD_RET_FAILURE; 82 83 return 0; 84} 85 86U_BOOT_LONGHELP(cpu, 87 "list - list available CPUs\n" 88 "cpu detail - show CPU detail"); 89 90U_BOOT_CMD_WITH_SUBCMDS(cpu, "display information about CPUs", cpu_help_text, 91 U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cpu_list), 92 U_BOOT_SUBCMD_MKENT(detail, 1, 0, do_cpu_detail)); 93