mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
c0648b7b9d
We already have a function for probing all devices of a specific class, use it. Signed-off-by: Michal Suchanek <msuchanek@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
162 lines
3 KiB
C
162 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_CPU
|
|
|
|
#include <common.h>
|
|
#include <cpu.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <log.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/root.h>
|
|
#include <linux/err.h>
|
|
#include <relocate.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int cpu_probe_all(void)
|
|
{
|
|
int ret = uclass_probe_all(UCLASS_CPU);
|
|
|
|
if (ret) {
|
|
debug("%s: Error while probing CPUs (err = %d %s)\n",
|
|
__func__, ret, errno_str(ret));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int cpu_is_current(struct udevice *cpu)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(cpu);
|
|
|
|
if (ops->is_current) {
|
|
if (ops->is_current(cpu))
|
|
return 1;
|
|
}
|
|
|
|
return -ENOSYS;
|
|
}
|
|
|
|
struct udevice *cpu_get_current_dev(void)
|
|
{
|
|
struct udevice *cpu;
|
|
int ret;
|
|
|
|
uclass_foreach_dev_probe(UCLASS_CPU, cpu) {
|
|
if (cpu_is_current(cpu) > 0)
|
|
return cpu;
|
|
}
|
|
|
|
/* If can't find current cpu device, use the first dev instead */
|
|
ret = uclass_first_device_err(UCLASS_CPU, &cpu);
|
|
if (ret) {
|
|
debug("%s: Could not get CPU device (err = %d)\n",
|
|
__func__, ret);
|
|
return NULL;
|
|
}
|
|
|
|
return cpu;
|
|
}
|
|
|
|
int cpu_get_desc(const 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(const struct udevice *dev, struct cpu_info *info)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_info)
|
|
return -ENOSYS;
|
|
|
|
/* Init cpu_info to 0 */
|
|
memset(info, 0, sizeof(struct cpu_info));
|
|
|
|
return ops->get_info(dev, info);
|
|
}
|
|
|
|
int cpu_get_count(const struct udevice *dev)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_count)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_count(dev);
|
|
}
|
|
|
|
int cpu_get_vendor(const struct udevice *dev, char *buf, int size)
|
|
{
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
|
|
if (!ops->get_vendor)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_vendor(dev, buf, size);
|
|
}
|
|
|
|
U_BOOT_DRIVER(cpu_bus) = {
|
|
.name = "cpu_bus",
|
|
.id = UCLASS_SIMPLE_BUS,
|
|
.per_child_plat_auto = sizeof(struct cpu_plat),
|
|
};
|
|
|
|
static int uclass_cpu_init(struct uclass *uc)
|
|
{
|
|
struct udevice *dev;
|
|
ofnode node;
|
|
int ret;
|
|
|
|
node = ofnode_path("/cpus");
|
|
if (!ofnode_valid(node))
|
|
return 0;
|
|
|
|
ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
|
|
&dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int uclass_cpu_post_bind(struct udevice *dev)
|
|
{
|
|
if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC) &&
|
|
(gd->flags & GD_FLG_RELOC)) {
|
|
struct cpu_ops *ops = cpu_get_ops(dev);
|
|
static int reloc_done;
|
|
|
|
if (!reloc_done) {
|
|
if (ops->get_desc)
|
|
MANUAL_RELOC(ops->get_desc);
|
|
if (ops->get_info)
|
|
MANUAL_RELOC(ops->get_info);
|
|
if (ops->get_count)
|
|
MANUAL_RELOC(ops->get_count);
|
|
if (ops->get_vendor)
|
|
MANUAL_RELOC(ops->get_vendor);
|
|
if (ops->is_current)
|
|
MANUAL_RELOC(ops->is_current);
|
|
|
|
reloc_done++;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(cpu) = {
|
|
.id = UCLASS_CPU,
|
|
.name = "cpu",
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
|
.init = uclass_cpu_init,
|
|
.post_bind = uclass_cpu_post_bind,
|
|
};
|