Merge branch 'next'
[J-u-boot.git] / cmd / cpu.c
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83d290c5 1// SPDX-License-Identifier: GPL-2.0+
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SG
2/*
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
320eca5c 5 * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
476fb4d8 6 * Copyright 2024 NXP
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7 */
8
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9#include <command.h>
10#include <cpu.h>
4e4bf944 11#include <display_options.h>
8e2fac05 12#include <dm.h>
166c3984 13#include <errno.h>
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SG
14
15static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
16 "L1 cache",
17 "MMU",
740d5d34 18 "Microcode",
22c2c179 19 "Device ID",
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20};
21
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22static struct udevice *cpu_find_device(unsigned long cpu_id)
23{
24 struct udevice *dev;
25
26 for (uclass_first_device(UCLASS_CPU, &dev); dev;
27 uclass_next_device(&dev)) {
28 if (cpu_id == dev_seq(dev))
29 return dev;
30 }
31
32 return NULL;
33}
34
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35static int print_cpu_list(bool detail)
36{
37 struct udevice *dev;
8e2fac05 38 char buf[100];
8e2fac05 39
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ÁFR
40 for (uclass_first_device(UCLASS_CPU, &dev);
41 dev;
42 uclass_next_device(&dev)) {
8a8d24bd 43 struct cpu_plat *plat = dev_get_parent_plat(dev);
8e2fac05 44 struct cpu_info info;
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45 bool first = true;
46 int ret, i;
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47
48 ret = cpu_get_desc(dev, buf, sizeof(buf));
8b85dfc6 49 printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
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50 ret ? "<no description>" : buf);
51 if (!detail)
52 continue;
53 ret = cpu_get_info(dev, &info);
54 if (ret) {
55 printf("\t(no detail available");
56 if (ret != -ENOSYS)
320eca5c 57 printf(": err=%d", ret);
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58 printf(")\n");
59 continue;
60 }
61 printf("\tID = %d, freq = ", plat->cpu_id);
62 print_freq(info.cpu_freq, "");
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63 for (i = 0; i < CPU_FEAT_COUNT; i++) {
64 if (info.features & (1 << i)) {
65 printf("%s%s", first ? ": " : ", ",
66 cpu_feature_name[i]);
67 first = false;
68 }
69 }
70 printf("\n");
320eca5c 71 if (info.features & (1 << CPU_FEAT_UCODE))
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72 printf("\tMicrocode version %#x\n",
73 plat->ucode_version);
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74 if (info.features & (1 << CPU_FEAT_DEVICE_ID))
75 printf("\tDevice ID %#lx\n", plat->device_id);
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76 }
77
78 return 0;
79}
80
09140113 81static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
320eca5c 82 char *const argv[])
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83{
84 if (print_cpu_list(false))
85 return CMD_RET_FAILURE;
86
87 return 0;
88}
89
09140113 90static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
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91 char *const argv[])
92{
93 if (print_cpu_list(true))
94 return CMD_RET_FAILURE;
95
96 return 0;
97}
98
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99static int do_cpu_release(struct cmd_tbl *cmdtp, int flag, int argc,
100 char *const argv[])
101{
102 struct udevice *dev;
103 unsigned long cpu_id;
104 unsigned long long boot_addr;
105
106 if (argc != 3)
107 return CMD_RET_USAGE;
108
109 cpu_id = dectoul(argv[1], NULL);
110 dev = cpu_find_device(cpu_id);
111 if (!dev)
112 return CMD_RET_FAILURE;
113
114 boot_addr = simple_strtoull(argv[2], NULL, 16);
115
116 if (cpu_release_core(dev, boot_addr))
117 return CMD_RET_FAILURE;
118
119 return 0;
120}
121
3616218b 122U_BOOT_LONGHELP(cpu,
8e2fac05 123 "list - list available CPUs\n"
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124 "cpu detail - show CPU detail\n"
125 "cpu release <core ID> <addr> - Release CPU <core ID> at <addr>\n"
126 " <core ID>: the sequence number in list subcommand outputs");
15c924a7
OP
127
128U_BOOT_CMD_WITH_SUBCMDS(cpu, "display information about CPUs", cpu_help_text,
129 U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cpu_list),
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130 U_BOOT_SUBCMD_MKENT(detail, 1, 0, do_cpu_detail),
131 U_BOOT_SUBCMD_MKENT(release, 3, 0, do_cpu_release));
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