u-boot/arch/x86/cpu/qemu/cpu.c
Asherah Connor 5b0b43e0e2 x86: qemu: move QFW to its own uclass
We move qfw into its own uclass and split the PIO functions into a
specific driver for that uclass.  The PIO driver is selected in the
qemu-x86 board config (this covers x86 and x86_64).

include/qfw.h is cleaned up and documentation added.

Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2021-04-12 17:44:55 -04:00

50 lines
889 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015, Miao Yan <yanmiaobest@gmail.com>
*/
#include <common.h>
#include <cpu.h>
#include <dm.h>
#include <errno.h>
#include <qfw.h>
#include <asm/cpu.h>
int cpu_qemu_get_desc(const struct udevice *dev, char *buf, int size)
{
if (size < CPU_MAX_NAME_LEN)
return -ENOSPC;
cpu_get_name(buf);
return 0;
}
static int cpu_qemu_get_count(const struct udevice *dev)
{
int ret;
struct udevice *qfw_dev;
ret = qfw_get_dev(&qfw_dev);
if (ret)
return ret;
return qfw_online_cpus(qfw_dev);
}
static const struct cpu_ops cpu_qemu_ops = {
.get_desc = cpu_qemu_get_desc,
.get_count = cpu_qemu_get_count,
};
static const struct udevice_id cpu_qemu_ids[] = {
{ .compatible = "cpu-qemu" },
{ }
};
U_BOOT_DRIVER(cpu_qemu_drv) = {
.name = "cpu_qemu",
.id = UCLASS_CPU,
.of_match = cpu_qemu_ids,
.ops = &cpu_qemu_ops,
};