projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e2fac05 SG |
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> | |
| 166c3984 | 12 | #include <errno.h> |
| 8e2fac05 SG |
13 | |
| 14 | static const char *cpu_feature_name[CPU_FEAT_COUNT] = { | |
| 15 | "L1 cache", | |
| 16 | "MMU", | |
| 17 | }; | |
| 18 | ||
| 19 | static int print_cpu_list(bool detail) | |
| 20 | { | |
| 21 | struct udevice *dev; | |
| 22 | struct uclass *uc; | |
| 23 | char buf[100]; | |
| 24 | int ret; | |
| 25 | ||
| 26 | ret = uclass_get(UCLASS_CPU, &uc); | |
| 27 | if (ret) { | |
| 28 | printf("Cannot find CPU uclass\n"); | |
| 29 | return ret; | |
| 30 | } | |
| 31 | uclass_foreach_dev(dev, uc) { | |
| 32 | struct cpu_platdata *plat = dev_get_parent_platdata(dev); | |
| 33 | struct cpu_info info; | |
| 34 | bool first; | |
| 35 | int i; | |
| 36 | ||
| 37 | ret = cpu_get_desc(dev, buf, sizeof(buf)); | |
| 38 | printf("%3d: %-10s %s\n", dev->seq, dev->name, | |
| 39 | ret ? "<no description>" : buf); | |
| 40 | if (!detail) | |
| 41 | continue; | |
| 42 | ret = cpu_get_info(dev, &info); | |
| 43 | if (ret) { | |
| 44 | printf("\t(no detail available"); | |
| 45 | if (ret != -ENOSYS) | |
| 46 | printf(": err=%d\n", ret); | |
| 47 | printf(")\n"); | |
| 48 | continue; | |
| 49 | } | |
| 50 | printf("\tID = %d, freq = ", plat->cpu_id); | |
| 51 | print_freq(info.cpu_freq, ""); | |
| 52 | first = true; | |
| 53 | for (i = 0; i < CPU_FEAT_COUNT; i++) { | |
| 54 | if (info.features & (1 << i)) { | |
| 55 | printf("%s%s", first ? ": " : ", ", | |
| 56 | cpu_feature_name[i]); | |
| 57 | first = false; | |
| 58 | } | |
| 59 | } | |
| 60 | printf("\n"); | |
| 61 | } | |
| 62 | ||
| 63 | return 0; | |
| 64 | } | |
| 65 | ||
| 66 | static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) | |
| 67 | { | |
| 68 | if (print_cpu_list(false)) | |
| 69 | return CMD_RET_FAILURE; | |
| 70 | ||
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 74 | static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc, | |
| 75 | char *const argv[]) | |
| 76 | { | |
| 77 | if (print_cpu_list(true)) | |
| 78 | return CMD_RET_FAILURE; | |
| 79 | ||
| 80 | return 0; | |
| 81 | } | |
| 82 | ||
| 83 | static cmd_tbl_t cmd_cpu_sub[] = { | |
| 84 | U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""), | |
| 85 | U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""), | |
| 86 | }; | |
| 87 | ||
| 88 | /* | |
| 89 | * Process a cpu sub-command | |
| 90 | */ | |
| 91 | static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc, | |
| 92 | char * const argv[]) | |
| 93 | { | |
| 94 | cmd_tbl_t *c = NULL; | |
| 95 | ||
| 96 | /* Strip off leading 'cpu' command argument */ | |
| 97 | argc--; | |
| 98 | argv++; | |
| 99 | ||
| 100 | if (argc) | |
| 101 | c = find_cmd_tbl(argv[0], cmd_cpu_sub, ARRAY_SIZE(cmd_cpu_sub)); | |
| 102 | ||
| 103 | if (c) | |
| 104 | return c->cmd(cmdtp, flag, argc, argv); | |
| 105 | else | |
| 106 | return CMD_RET_USAGE; | |
| 107 | } | |
| 108 | ||
| 109 | U_BOOT_CMD( | |
| 110 | cpu, 2, 1, do_cpu, | |
| 111 | "display information about CPUs", | |
| 112 | "list - list available CPUs\n" | |
| 113 | "cpu detail - show CPU detail" | |
| 114 | ); |