177e135136
This is needed to generate MADT and SRAT where lapicid for threads need to be added last. When CPUID leaf '0xB' is not present assume some defaults that would result in identical ACPI code generation. Change-Id: I2210eb9b663dd90941a64132aa7154440dc7e5a9 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/69222 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
31 lines
718 B
C
31 lines
718 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <device/device.h>
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#include <console/console.h>
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#include <stddef.h>
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struct device *add_cpu_device(struct bus *cpu_bus, unsigned int apic_id,
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int enabled)
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{
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struct device_path cpu_path = {};
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struct device *cpu;
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/* Build the CPU device path */
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cpu_path.type = DEVICE_PATH_APIC;
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cpu_path.apic.apic_id = apic_id;
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cpu_path.apic.initial_lapicid = apic_id;
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/* Update CPU in devicetree. */
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if (enabled)
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cpu = alloc_find_dev(cpu_bus, &cpu_path);
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else
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cpu = find_dev_path(cpu_bus, &cpu_path);
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if (!cpu)
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return NULL;
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cpu->enabled = enabled;
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printk(BIOS_DEBUG, "CPU: %s %s\n",
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dev_path(cpu), cpu->enabled?"enabled":"disabled");
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return cpu;
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}
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