1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2015 Google, Inc
3*4882a593Smuzhiyun * Written by Simon Glass <sjg@chromium.org>
4*4882a593Smuzhiyun * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <command.h>
11*4882a593Smuzhiyun #include <cpu.h>
12*4882a593Smuzhiyun #include <dm.h>
13*4882a593Smuzhiyun #include <errno.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
16*4882a593Smuzhiyun "L1 cache",
17*4882a593Smuzhiyun "MMU",
18*4882a593Smuzhiyun "Microcode",
19*4882a593Smuzhiyun "Device ID",
20*4882a593Smuzhiyun };
21*4882a593Smuzhiyun
print_cpu_list(bool detail)22*4882a593Smuzhiyun static int print_cpu_list(bool detail)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun struct udevice *dev;
25*4882a593Smuzhiyun char buf[100];
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun for (uclass_first_device(UCLASS_CPU, &dev);
28*4882a593Smuzhiyun dev;
29*4882a593Smuzhiyun uclass_next_device(&dev)) {
30*4882a593Smuzhiyun struct cpu_platdata *plat = dev_get_parent_platdata(dev);
31*4882a593Smuzhiyun struct cpu_info info;
32*4882a593Smuzhiyun bool first = true;
33*4882a593Smuzhiyun int ret, i;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun ret = cpu_get_desc(dev, buf, sizeof(buf));
36*4882a593Smuzhiyun printf("%3d: %-10s %s\n", dev->seq, dev->name,
37*4882a593Smuzhiyun ret ? "<no description>" : buf);
38*4882a593Smuzhiyun if (!detail)
39*4882a593Smuzhiyun continue;
40*4882a593Smuzhiyun ret = cpu_get_info(dev, &info);
41*4882a593Smuzhiyun if (ret) {
42*4882a593Smuzhiyun printf("\t(no detail available");
43*4882a593Smuzhiyun if (ret != -ENOSYS)
44*4882a593Smuzhiyun printf(": err=%d", ret);
45*4882a593Smuzhiyun printf(")\n");
46*4882a593Smuzhiyun continue;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun printf("\tID = %d, freq = ", plat->cpu_id);
49*4882a593Smuzhiyun print_freq(info.cpu_freq, "");
50*4882a593Smuzhiyun for (i = 0; i < CPU_FEAT_COUNT; i++) {
51*4882a593Smuzhiyun if (info.features & (1 << i)) {
52*4882a593Smuzhiyun printf("%s%s", first ? ": " : ", ",
53*4882a593Smuzhiyun cpu_feature_name[i]);
54*4882a593Smuzhiyun first = false;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun printf("\n");
58*4882a593Smuzhiyun if (info.features & (1 << CPU_FEAT_UCODE))
59*4882a593Smuzhiyun printf("\tMicrocode version %#x\n",
60*4882a593Smuzhiyun plat->ucode_version);
61*4882a593Smuzhiyun if (info.features & (1 << CPU_FEAT_DEVICE_ID))
62*4882a593Smuzhiyun printf("\tDevice ID %#lx\n", plat->device_id);
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun return 0;
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
do_cpu_list(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])68*4882a593Smuzhiyun static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc,
69*4882a593Smuzhiyun char *const argv[])
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun if (print_cpu_list(false))
72*4882a593Smuzhiyun return CMD_RET_FAILURE;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun return 0;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
do_cpu_detail(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])77*4882a593Smuzhiyun static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc,
78*4882a593Smuzhiyun char *const argv[])
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun if (print_cpu_list(true))
81*4882a593Smuzhiyun return CMD_RET_FAILURE;
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun return 0;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun static cmd_tbl_t cmd_cpu_sub[] = {
87*4882a593Smuzhiyun U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
88*4882a593Smuzhiyun U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
89*4882a593Smuzhiyun };
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun /*
92*4882a593Smuzhiyun * Process a cpu sub-command
93*4882a593Smuzhiyun */
do_cpu(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])94*4882a593Smuzhiyun static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc,
95*4882a593Smuzhiyun char * const argv[])
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun cmd_tbl_t *c = NULL;
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun /* Strip off leading 'cpu' command argument */
100*4882a593Smuzhiyun argc--;
101*4882a593Smuzhiyun argv++;
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun if (argc)
104*4882a593Smuzhiyun c = find_cmd_tbl(argv[0], cmd_cpu_sub,
105*4882a593Smuzhiyun ARRAY_SIZE(cmd_cpu_sub));
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun if (c)
108*4882a593Smuzhiyun return c->cmd(cmdtp, flag, argc, argv);
109*4882a593Smuzhiyun else
110*4882a593Smuzhiyun return CMD_RET_USAGE;
111*4882a593Smuzhiyun }
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun U_BOOT_CMD(
114*4882a593Smuzhiyun cpu, 2, 1, do_cpu,
115*4882a593Smuzhiyun "display information about CPUs",
116*4882a593Smuzhiyun "list - list available CPUs\n"
117*4882a593Smuzhiyun "cpu detail - show CPU detail"
118*4882a593Smuzhiyun );
119