mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 12:45:42 +00:00
320eca5cf7
Use uclass_first_device and uclass_next_device in order to avoid exceptions for drivers that aren't probed when cpu ops are requested. Improve code style and fix indentations. Fix incorrect line break when cpu info is not available. Remove unneeded brackets. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
118 lines
2.4 KiB
C
118 lines
2.4 KiB
C
/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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* Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <cpu.h>
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#include <dm.h>
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#include <errno.h>
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static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
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"L1 cache",
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"MMU",
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"Microcode",
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"Device ID",
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};
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static int print_cpu_list(bool detail)
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{
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struct udevice *dev;
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char buf[100];
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for (uclass_first_device(UCLASS_CPU, &dev);
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dev;
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uclass_next_device(&dev)) {
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struct cpu_platdata *plat = dev_get_parent_platdata(dev);
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struct cpu_info info;
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bool first = true;
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int ret, i;
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ret = cpu_get_desc(dev, buf, sizeof(buf));
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printf("%3d: %-10s %s\n", dev->seq, dev->name,
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ret ? "<no description>" : buf);
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if (!detail)
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continue;
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ret = cpu_get_info(dev, &info);
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if (ret) {
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printf("\t(no detail available");
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if (ret != -ENOSYS)
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printf(": err=%d", ret);
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printf(")\n");
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continue;
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}
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printf("\tID = %d, freq = ", plat->cpu_id);
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print_freq(info.cpu_freq, "");
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for (i = 0; i < CPU_FEAT_COUNT; i++) {
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if (info.features & (1 << i)) {
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printf("%s%s", first ? ": " : ", ",
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cpu_feature_name[i]);
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first = false;
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}
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}
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printf("\n");
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if (info.features & (1 << CPU_FEAT_UCODE))
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printf("\tMicrocode version %#x\n",
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plat->ucode_version);
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if (info.features & (1 << CPU_FEAT_DEVICE_ID))
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printf("\tDevice ID %#lx\n", plat->device_id);
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}
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return 0;
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}
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static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (print_cpu_list(false))
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return CMD_RET_FAILURE;
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return 0;
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}
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static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (print_cpu_list(true))
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return CMD_RET_FAILURE;
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return 0;
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}
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static cmd_tbl_t cmd_cpu_sub[] = {
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U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
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U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
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};
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/*
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* Process a cpu sub-command
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*/
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static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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cmd_tbl_t *c = NULL;
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/* Strip off leading 'cpu' command argument */
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argc--;
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argv++;
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if (argc)
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c = find_cmd_tbl(argv[0], cmd_cpu_sub,
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ARRAY_SIZE(cmd_cpu_sub));
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if (c)
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return c->cmd(cmdtp, flag, argc, argv);
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else
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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cpu, 2, 1, do_cpu,
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"display information about CPUs",
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"list - list available CPUs\n"
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"cpu detail - show CPU detail"
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);
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