| Simon Glass | 8e2fac0 | 2015-04-28 20:25:11 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Google, Inc |
| 3 | * Written by Simon Glass <sjg@chromium.org> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <command.h> |
| 10 | #include <cpu.h> |
| 11 | #include <dm.h> |
| 12 | |
| 13 | static const char *cpu_feature_name[CPU_FEAT_COUNT] = { |
| 14 | "L1 cache", |
| 15 | "MMU", |
| 16 | }; |
| 17 | |
| 18 | static int print_cpu_list(bool detail) |
| 19 | { |
| 20 | struct udevice *dev; |
| 21 | struct uclass *uc; |
| 22 | char buf[100]; |
| 23 | int ret; |
| 24 | |
| 25 | ret = uclass_get(UCLASS_CPU, &uc); |
| 26 | if (ret) { |
| 27 | printf("Cannot find CPU uclass\n"); |
| 28 | return ret; |
| 29 | } |
| 30 | uclass_foreach_dev(dev, uc) { |
| 31 | struct cpu_platdata *plat = dev_get_parent_platdata(dev); |
| 32 | struct cpu_info info; |
| 33 | bool first; |
| 34 | int i; |
| 35 | |
| 36 | ret = cpu_get_desc(dev, buf, sizeof(buf)); |
| 37 | printf("%3d: %-10s %s\n", dev->seq, dev->name, |
| 38 | ret ? "<no description>" : buf); |
| 39 | if (!detail) |
| 40 | continue; |
| 41 | ret = cpu_get_info(dev, &info); |
| 42 | if (ret) { |
| 43 | printf("\t(no detail available"); |
| 44 | if (ret != -ENOSYS) |
| 45 | printf(": err=%d\n", ret); |
| 46 | printf(")\n"); |
| 47 | continue; |
| 48 | } |
| 49 | printf("\tID = %d, freq = ", plat->cpu_id); |
| 50 | print_freq(info.cpu_freq, ""); |
| 51 | first = true; |
| 52 | for (i = 0; i < CPU_FEAT_COUNT; i++) { |
| 53 | if (info.features & (1 << i)) { |
| 54 | printf("%s%s", first ? ": " : ", ", |
| 55 | cpu_feature_name[i]); |
| 56 | first = false; |
| 57 | } |
| 58 | } |
| 59 | printf("\n"); |
| 60 | } |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) |
| 66 | { |
| 67 | if (print_cpu_list(false)) |
| 68 | return CMD_RET_FAILURE; |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc, |
| 74 | char *const argv[]) |
| 75 | { |
| 76 | if (print_cpu_list(true)) |
| 77 | return CMD_RET_FAILURE; |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static cmd_tbl_t cmd_cpu_sub[] = { |
| 83 | U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""), |
| 84 | U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""), |
| 85 | }; |
| 86 | |
| 87 | /* |
| 88 | * Process a cpu sub-command |
| 89 | */ |
| 90 | static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc, |
| 91 | char * const argv[]) |
| 92 | { |
| 93 | cmd_tbl_t *c = NULL; |
| 94 | |
| 95 | /* Strip off leading 'cpu' command argument */ |
| 96 | argc--; |
| 97 | argv++; |
| 98 | |
| 99 | if (argc) |
| 100 | c = find_cmd_tbl(argv[0], cmd_cpu_sub, ARRAY_SIZE(cmd_cpu_sub)); |
| 101 | |
| 102 | if (c) |
| 103 | return c->cmd(cmdtp, flag, argc, argv); |
| 104 | else |
| 105 | return CMD_RET_USAGE; |
| 106 | } |
| 107 | |
| 108 | U_BOOT_CMD( |
| 109 | cpu, 2, 1, do_cpu, |
| 110 | "display information about CPUs", |
| 111 | "list - list available CPUs\n" |
| 112 | "cpu detail - show CPU detail" |
| 113 | ); |