1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
5 * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
14 static const char *cpu_feature_name
[CPU_FEAT_COUNT
] = {
21 static int print_cpu_list(bool detail
)
26 for (uclass_first_device(UCLASS_CPU
, &dev
);
28 uclass_next_device(&dev
)) {
29 struct cpu_platdata
*plat
= dev_get_parent_platdata(dev
);
34 ret
= cpu_get_desc(dev
, buf
, sizeof(buf
));
35 printf("%3d: %-10s %s\n", dev
->seq
, dev
->name
,
36 ret
? "<no description>" : buf
);
39 ret
= cpu_get_info(dev
, &info
);
41 printf("\t(no detail available");
43 printf(": err=%d", ret
);
47 printf("\tID = %d, freq = ", plat
->cpu_id
);
48 print_freq(info
.cpu_freq
, "");
49 for (i
= 0; i
< CPU_FEAT_COUNT
; i
++) {
50 if (info
.features
& (1 << i
)) {
51 printf("%s%s", first
? ": " : ", ",
57 if (info
.features
& (1 << CPU_FEAT_UCODE
))
58 printf("\tMicrocode version %#x\n",
60 if (info
.features
& (1 << CPU_FEAT_DEVICE_ID
))
61 printf("\tDevice ID %#lx\n", plat
->device_id
);
67 static int do_cpu_list(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
70 if (print_cpu_list(false))
71 return CMD_RET_FAILURE
;
76 static int do_cpu_detail(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
79 if (print_cpu_list(true))
80 return CMD_RET_FAILURE
;
85 static cmd_tbl_t cmd_cpu_sub
[] = {
86 U_BOOT_CMD_MKENT(list
, 2, 1, do_cpu_list
, "", ""),
87 U_BOOT_CMD_MKENT(detail
, 4, 0, do_cpu_detail
, "", ""),
91 * Process a cpu sub-command
93 static int do_cpu(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
98 /* Strip off leading 'cpu' command argument */
103 c
= find_cmd_tbl(argv
[0], cmd_cpu_sub
,
104 ARRAY_SIZE(cmd_cpu_sub
));
107 return c
->cmd(cmdtp
, flag
, argc
, argv
);
109 return CMD_RET_USAGE
;
114 "display information about CPUs",
115 "list - list available CPUs\n"
116 "cpu detail - show CPU detail"