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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
* Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
* Copyright 2024 NXP
*/
#include <command.h>
#include <cpu.h>
#include <display_options.h>
#include <dm.h>
#include <errno.h>
static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
"L1 cache",
"MMU",
"Microcode",
"Device ID",
};
static struct udevice *cpu_find_device(unsigned long cpu_id)
{
struct udevice *dev;
for (uclass_first_device(UCLASS_CPU, &dev); dev;
uclass_next_device(&dev)) {
if (cpu_id == dev_seq(dev))
return dev;
}
return NULL;
}
static int print_cpu_list(bool detail)
{
struct udevice *dev;
char buf[100];
for (uclass_first_device(UCLASS_CPU, &dev);
dev;
uclass_next_device(&dev)) {
struct cpu_plat *plat = dev_get_parent_plat(dev);
struct cpu_info info;
bool first = true;
int ret, i;
ret = cpu_get_desc(dev, buf, sizeof(buf));
printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
ret ? "<no description>" : buf);
if (!detail)
continue;
ret = cpu_get_info(dev, &info);
if (ret) {
printf("\t(no detail available");
if (ret != -ENOSYS)
printf(": err=%d", ret);
printf(")\n");
continue;
}
printf("\tID = %d, freq = ", plat->cpu_id);
print_freq(info.cpu_freq, "");
for (i = 0; i < CPU_FEAT_COUNT; i++) {
if (info.features & (1 << i)) {
printf("%s%s", first ? ": " : ", ",
cpu_feature_name[i]);
first = false;
}
}
printf("\n");
if (info.features & (1 << CPU_FEAT_UCODE))
printf("\tMicrocode version %#x\n",
plat->ucode_version);
if (info.features & (1 << CPU_FEAT_DEVICE_ID))
printf("\tDevice ID %#lx\n", plat->device_id);
}
return 0;
}
static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (print_cpu_list(false))
return CMD_RET_FAILURE;
return 0;
}
static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (print_cpu_list(true))
return CMD_RET_FAILURE;
return 0;
}
static int do_cpu_release(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
unsigned long cpu_id;
unsigned long long boot_addr;
if (argc != 3)
return CMD_RET_USAGE;
cpu_id = dectoul(argv[1], NULL);
dev = cpu_find_device(cpu_id);
if (!dev)
return CMD_RET_FAILURE;
boot_addr = simple_strtoull(argv[2], NULL, 16);
if (cpu_release_core(dev, boot_addr))
return CMD_RET_FAILURE;
return 0;
}
U_BOOT_LONGHELP(cpu,
"list - list available CPUs\n"
"cpu detail - show CPU detail\n"
"cpu release <core ID> <addr> - Release CPU <core ID> at <addr>\n"
" <core ID>: the sequence number in list subcommand outputs");
U_BOOT_CMD_WITH_SUBCMDS(cpu, "display information about CPUs", cpu_help_text,
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cpu_list),
U_BOOT_SUBCMD_MKENT(detail, 1, 0, do_cpu_detail),
U_BOOT_SUBCMD_MKENT(release, 3, 0, do_cpu_release));
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