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557767f802
It is useful to obtain the results of cpuid queries, so add a command for this. Signed-off-by: Simon Glass <sjg@chromium.org>
37 lines
752 B
C
37 lines
752 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* The 'cpuid' command provides access to the CPU's cpuid information
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*
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* Copyright 2024 Google, LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <command.h>
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#include <vsprintf.h>
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#include <asm/cpu.h>
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static int do_cpuid(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cpuid_result res;
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ulong op;
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if (argc < 2)
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return CMD_RET_USAGE;
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op = hextoul(argv[1], NULL);
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res = cpuid(op);
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printf("eax %08x\n", res.eax);
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printf("ebx %08x\n", res.ebx);
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printf("ecx %08x\n", res.ecx);
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printf("edx %08x\n", res.edx);
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return 0;
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}
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U_BOOT_LONGHELP(cpuid, "Show CPU Identification information");
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U_BOOT_CMD(
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cpuid, 2, 1, do_cpuid,
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"cpuid <op>", cpuid_help_text
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);
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