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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glass8e2fac02015-04-28 20:25:11 -06002/*
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +02005 * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
Simon Glass8e2fac02015-04-28 20:25:11 -06006 */
7
8#include <common.h>
9#include <command.h>
10#include <cpu.h>
11#include <dm.h>
Bin Meng166c3982015-06-12 14:52:18 +080012#include <errno.h>
Simon Glass8e2fac02015-04-28 20:25:11 -060013
14static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
15 "L1 cache",
16 "MMU",
Simon Glass740d5d32016-03-06 19:27:49 -070017 "Microcode",
Álvaro Fernández Rojas22c2c172017-04-25 00:39:13 +020018 "Device ID",
Simon Glass8e2fac02015-04-28 20:25:11 -060019};
20
21static int print_cpu_list(bool detail)
22{
23 struct udevice *dev;
Simon Glass8e2fac02015-04-28 20:25:11 -060024 char buf[100];
Simon Glass8e2fac02015-04-28 20:25:11 -060025
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +020026 for (uclass_first_device(UCLASS_CPU, &dev);
27 dev;
28 uclass_next_device(&dev)) {
Simon Glass8a8d24b2020-12-03 16:55:23 -070029 struct cpu_plat *plat = dev_get_parent_plat(dev);
Simon Glass8e2fac02015-04-28 20:25:11 -060030 struct cpu_info info;
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +020031 bool first = true;
32 int ret, i;
Simon Glass8e2fac02015-04-28 20:25:11 -060033
34 ret = cpu_get_desc(dev, buf, sizeof(buf));
Simon Glass8b85dfc2020-12-16 21:20:07 -070035 printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
Simon Glass8e2fac02015-04-28 20:25:11 -060036 ret ? "<no description>" : buf);
37 if (!detail)
38 continue;
39 ret = cpu_get_info(dev, &info);
40 if (ret) {
41 printf("\t(no detail available");
42 if (ret != -ENOSYS)
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +020043 printf(": err=%d", ret);
Simon Glass8e2fac02015-04-28 20:25:11 -060044 printf(")\n");
45 continue;
46 }
47 printf("\tID = %d, freq = ", plat->cpu_id);
48 print_freq(info.cpu_freq, "");
Simon Glass8e2fac02015-04-28 20:25:11 -060049 for (i = 0; i < CPU_FEAT_COUNT; i++) {
50 if (info.features & (1 << i)) {
51 printf("%s%s", first ? ": " : ", ",
52 cpu_feature_name[i]);
53 first = false;
54 }
55 }
56 printf("\n");
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +020057 if (info.features & (1 << CPU_FEAT_UCODE))
Simon Glass740d5d32016-03-06 19:27:49 -070058 printf("\tMicrocode version %#x\n",
59 plat->ucode_version);
Simon Glass740d5d32016-03-06 19:27:49 -070060 if (info.features & (1 << CPU_FEAT_DEVICE_ID))
61 printf("\tDevice ID %#lx\n", plat->device_id);
Simon Glass8e2fac02015-04-28 20:25:11 -060062 }
63
64 return 0;
65}
66
Simon Glass09140112020-05-10 11:40:03 -060067static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +020068 char *const argv[])
Simon Glass8e2fac02015-04-28 20:25:11 -060069{
70 if (print_cpu_list(false))
71 return CMD_RET_FAILURE;
72
73 return 0;
74}
75
Simon Glass09140112020-05-10 11:40:03 -060076static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
Simon Glass8e2fac02015-04-28 20:25:11 -060077 char *const argv[])
78{
79 if (print_cpu_list(true))
80 return CMD_RET_FAILURE;
81
82 return 0;
83}
84
Simon Glass09140112020-05-10 11:40:03 -060085static struct cmd_tbl cmd_cpu_sub[] = {
Simon Glass8e2fac02015-04-28 20:25:11 -060086 U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
87 U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
88};
89
90/*
91 * Process a cpu sub-command
92 */
Simon Glass09140112020-05-10 11:40:03 -060093static int do_cpu(struct cmd_tbl *cmdtp, int flag, int argc,
94 char *const argv[])
Simon Glass8e2fac02015-04-28 20:25:11 -060095{
Simon Glass09140112020-05-10 11:40:03 -060096 struct cmd_tbl *c = NULL;
Simon Glass8e2fac02015-04-28 20:25:11 -060097
98 /* Strip off leading 'cpu' command argument */
99 argc--;
100 argv++;
101
102 if (argc)
Álvaro Fernández Rojas320eca52017-04-25 00:39:17 +0200103 c = find_cmd_tbl(argv[0], cmd_cpu_sub,
104 ARRAY_SIZE(cmd_cpu_sub));
Simon Glass8e2fac02015-04-28 20:25:11 -0600105
106 if (c)
107 return c->cmd(cmdtp, flag, argc, argv);
108 else
109 return CMD_RET_USAGE;
110}
111
112U_BOOT_CMD(
113 cpu, 2, 1, do_cpu,
114 "display information about CPUs",
115 "list - list available CPUs\n"
116 "cpu detail - show CPU detail"
117);