/* * Copyright (c) 2015 Google, Inc * Written by Simon Glass <sjg@chromium.org> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <command.h> #include <cpu.h> #include <dm.h> #include <errno.h> static const char *cpu_feature_name[CPU_FEAT_COUNT] = { "L1 cache", "MMU", "Microcode", }; static int print_cpu_list(bool detail) { struct udevice *dev; struct uclass *uc; char buf[100]; int ret; ret = uclass_get(UCLASS_CPU, &uc); if (ret) { printf("Cannot find CPU uclass\n"); return ret; } uclass_foreach_dev(dev, uc) { struct cpu_platdata *plat = dev_get_parent_platdata(dev); struct cpu_info info; bool first; int i; ret = cpu_get_desc(dev, buf, sizeof(buf)); printf("%3d: %-10s %s\n", dev->seq, dev->name, ret ? "<no description>" : buf); if (!detail) continue; ret = cpu_get_info(dev, &info); if (ret) { printf("\t(no detail available"); if (ret != -ENOSYS) printf(": err=%d\n", ret); printf(")\n"); continue; } printf("\tID = %d, freq = ", plat->cpu_id); print_freq(info.cpu_freq, ""); first = true; for (i = 0; i < CPU_FEAT_COUNT; i++) { if (info.features & (1 << i)) { printf("%s%s", first ? ": " : ", ", cpu_feature_name[i]); first = false; } } printf("\n"); if (info.features & (1 << CPU_FEAT_UCODE)) { printf("\tMicrocode version %#x\n", plat->ucode_version); } if (info.features & (1 << CPU_FEAT_DEVICE_ID)) printf("\tDevice ID %#lx\n", plat->device_id); } return 0; } static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { if (print_cpu_list(false)) return CMD_RET_FAILURE; return 0; } static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { if (print_cpu_list(true)) return CMD_RET_FAILURE; return 0; } static cmd_tbl_t cmd_cpu_sub[] = { U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""), U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""), }; /* * Process a cpu sub-command */ static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { cmd_tbl_t *c = NULL; /* Strip off leading 'cpu' command argument */ argc--; argv++; if (argc) c = find_cmd_tbl(argv[0], cmd_cpu_sub, ARRAY_SIZE(cmd_cpu_sub)); if (c) return c->cmd(cmdtp, flag, argc, argv); else return CMD_RET_USAGE; } U_BOOT_CMD( cpu, 2, 1, do_cpu, "display information about CPUs", "list - list available CPUs\n" "cpu detail - show CPU detail" );