blob: bc4dc5c529b87565c36c7d289e47a7e9533edfd4 [file] [log] [blame]
Simon Glass8e2fac02015-04-28 20:25:11 -06001/*
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>
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",
Simon Glass8e2fac02015-04-28 20:25:11 -060018};
19
20static int print_cpu_list(bool detail)
21{
22 struct udevice *dev;
23 struct uclass *uc;
24 char buf[100];
25 int ret;
26
27 ret = uclass_get(UCLASS_CPU, &uc);
28 if (ret) {
29 printf("Cannot find CPU uclass\n");
30 return ret;
31 }
32 uclass_foreach_dev(dev, uc) {
33 struct cpu_platdata *plat = dev_get_parent_platdata(dev);
34 struct cpu_info info;
35 bool first;
36 int i;
37
38 ret = cpu_get_desc(dev, buf, sizeof(buf));
39 printf("%3d: %-10s %s\n", dev->seq, dev->name,
40 ret ? "<no description>" : buf);
41 if (!detail)
42 continue;
43 ret = cpu_get_info(dev, &info);
44 if (ret) {
45 printf("\t(no detail available");
46 if (ret != -ENOSYS)
47 printf(": err=%d\n", ret);
48 printf(")\n");
49 continue;
50 }
51 printf("\tID = %d, freq = ", plat->cpu_id);
52 print_freq(info.cpu_freq, "");
53 first = true;
54 for (i = 0; i < CPU_FEAT_COUNT; i++) {
55 if (info.features & (1 << i)) {
56 printf("%s%s", first ? ": " : ", ",
57 cpu_feature_name[i]);
58 first = false;
59 }
60 }
61 printf("\n");
Simon Glass740d5d32016-03-06 19:27:49 -070062 if (info.features & (1 << CPU_FEAT_UCODE)) {
63 printf("\tMicrocode version %#x\n",
64 plat->ucode_version);
65 }
66 if (info.features & (1 << CPU_FEAT_DEVICE_ID))
67 printf("\tDevice ID %#lx\n", plat->device_id);
Simon Glass8e2fac02015-04-28 20:25:11 -060068 }
69
70 return 0;
71}
72
73static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
74{
75 if (print_cpu_list(false))
76 return CMD_RET_FAILURE;
77
78 return 0;
79}
80
81static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc,
82 char *const argv[])
83{
84 if (print_cpu_list(true))
85 return CMD_RET_FAILURE;
86
87 return 0;
88}
89
90static cmd_tbl_t cmd_cpu_sub[] = {
91 U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
92 U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
93};
94
95/*
96 * Process a cpu sub-command
97 */
98static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc,
99 char * const argv[])
100{
101 cmd_tbl_t *c = NULL;
102
103 /* Strip off leading 'cpu' command argument */
104 argc--;
105 argv++;
106
107 if (argc)
108 c = find_cmd_tbl(argv[0], cmd_cpu_sub, ARRAY_SIZE(cmd_cpu_sub));
109
110 if (c)
111 return c->cmd(cmdtp, flag, argc, argv);
112 else
113 return CMD_RET_USAGE;
114}
115
116U_BOOT_CMD(
117 cpu, 2, 1, do_cpu,
118 "display information about CPUs",
119 "list - list available CPUs\n"
120 "cpu detail - show CPU detail"
121);