mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
6e6f4ce4f8
Most of the MP initialization codes in arch/x86/cpu/baytrail/cpu.c is common to all x86 processors, except detect_num_cpus() which varies from cpu to cpu. Move these to arch/x86/cpu/cpu.c and implement the new 'get_count' method for baytrail and cpu_x86 drivers. Now we call cpu_get_count() in mp_init() to get the number of CPUs. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/root.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int cpu_get_desc(struct udevice *dev, char *buf, int size)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_desc)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_desc(dev, buf, size);
|
|
}
|
|
|
|
int cpu_get_info(struct udevice *dev, struct cpu_info *info)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_info)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_info(dev, info);
|
|
}
|
|
|
|
int cpu_get_count(struct udevice *dev)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_count)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_count(dev);
|
|
}
|
|
|
|
U_BOOT_DRIVER(cpu_bus) = {
|
|
.name = "cpu_bus",
|
|
.id = UCLASS_SIMPLE_BUS,
|
|
.per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata),
|
|
};
|
|
|
|
static int uclass_cpu_init(struct uclass *uc)
|
|
{
|
|
struct udevice *dev;
|
|
int node;
|
|
int ret;
|
|
|
|
node = fdt_path_offset(gd->fdt_blob, "/cpus");
|
|
if (node < 0)
|
|
return 0;
|
|
|
|
ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
|
|
&dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
UCLASS_DRIVER(cpu) = {
|
|
.id = UCLASS_CPU,
|
|
.name = "cpu",
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
|
.init = uclass_cpu_init,
|
|
};
|