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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>
- */
- #include <common.h>
- #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 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;
- }
- #if IS_ENABLED(CONFIG_SYS_LONGHELP)
- static char cpu_help_text[] =
- "list - list available CPUs\n"
- "cpu detail - show CPU detail"
- ;
- #endif
- 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));
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