cpu_device.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <console/console.h>
 
struct device *add_cpu_device(struct bus *cpu_bus, unsigned int apic_id,
                              int enabled)
{
        struct device_path cpu_path;
        struct device *cpu;
 
        /* Build the CPU device path */
        cpu_path.type = DEVICE_PATH_APIC;
        cpu_path.apic.apic_id = apic_id;
 
        /* Update CPU in devicetree. */
        if (enabled)
                cpu = alloc_find_dev(cpu_bus, &cpu_path);
        else
                cpu = find_dev_path(cpu_bus, &cpu_path);
        if (!cpu)
                return NULL;
 
        cpu->enabled = enabled;
        printk(BIOS_DEBUG, "CPU: %s %s\n",
                dev_path(cpu), cpu->enabled?"enabled":"disabled");
 
        return cpu;
}
 
void set_cpu_topology(struct device *cpu, unsigned int node,
                      unsigned int package, unsigned int core,
                      unsigned int thread)
{
        cpu->path.apic.node_id = node;
        cpu->path.apic.package_id = package;
        cpu->path.apic.core_id = core;
        cpu->path.apic.thread_id = thread;
}