blob: b4af64f54f9ffa40966ef56c77941adac7fc11f6 [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",
17};
18
19static 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
66static 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
74static 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
83static 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 */
91static 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
109U_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);