// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2004 James Cleverdon, IBM.
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*
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* Generic APIC sub-arch probe layer.
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*
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* Hacked for x86-64 by James Cleverdon from i386 architecture code by
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* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
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* James Cleverdon.
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*/
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#include <linux/thread_info.h>
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#include <asm/apic.h>
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#include "local.h"
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/*
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* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
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*/
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void __init default_setup_apic_routing(void)
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{
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struct apic **drv;
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enable_IR_x2apic();
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->probe && (*drv)->probe()) {
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if (apic != *drv) {
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apic = *drv;
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pr_info("Switched APIC routing to %s.\n",
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apic->name);
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}
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break;
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}
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}
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}
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int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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struct apic **drv;
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
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if (apic != *drv) {
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apic = *drv;
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pr_info("Setting APIC routing to %s.\n",
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apic->name);
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}
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return 1;
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}
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}
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return 0;
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}
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