mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 16:07:30 +00:00
2541ce2c1a
A new driver uclass is created to handle the reboot mode control. The new uclass driver is updating an environment variable with the configured reboot mode. The mode is extracted from a map provided at initialization time. The map contains a list of modes and associated ids. Signed-off-by: Nandor Han <nandor.han@vaisala.com> Reviewed-by: Simon Glass <sjg@chromium.org>
134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c), Vaisala Oyj
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <dm/device_compat.h>
|
|
#include <dm/devres.h>
|
|
#include <exports.h>
|
|
#include <reboot-mode/reboot-mode.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int dm_reboot_mode_update(struct udevice *dev)
|
|
{
|
|
struct reboot_mode_ops *ops = reboot_mode_get_ops(dev);
|
|
u32 rebootmode;
|
|
int ret, i;
|
|
|
|
assert(ops);
|
|
|
|
if (!ops->get)
|
|
return -ENOSYS;
|
|
|
|
ret = ops->get(dev, &rebootmode);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to retrieve the reboot mode value\n");
|
|
return ret;
|
|
}
|
|
|
|
const struct reboot_mode_uclass_platdata *plat_data =
|
|
dev_get_uclass_plat(dev);
|
|
|
|
for (i = 0; i < plat_data->count; i++) {
|
|
if (plat_data->modes[i].mode_id == rebootmode) {
|
|
ret = env_set(plat_data->env_variable,
|
|
plat_data->modes[i].mode_name);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to set env: %s\n",
|
|
plat_data->env_variable);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ops->set) {
|
|
/* Clear the value */
|
|
rebootmode = 0;
|
|
ret = ops->set(dev, rebootmode);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to clear the reboot mode\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dm_reboot_mode_pre_probe(struct udevice *dev)
|
|
{
|
|
struct reboot_mode_uclass_platdata *plat_data;
|
|
|
|
plat_data = dev_get_uclass_plat(dev);
|
|
if (!plat_data)
|
|
return -EINVAL;
|
|
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
const int node = dev_of_offset(dev);
|
|
const char *mode_prefix = "mode-";
|
|
const int mode_prefix_len = strlen(mode_prefix);
|
|
int property;
|
|
const u32 *propvalue;
|
|
const char *propname;
|
|
|
|
plat_data->env_variable = fdt_getprop(gd->fdt_blob,
|
|
node,
|
|
"u-boot,env-variable",
|
|
NULL);
|
|
if (!plat_data->env_variable)
|
|
plat_data->env_variable = "reboot-mode";
|
|
|
|
plat_data->count = 0;
|
|
|
|
fdt_for_each_property_offset(property, gd->fdt_blob, node) {
|
|
propvalue = fdt_getprop_by_offset(gd->fdt_blob,
|
|
property, &propname, NULL);
|
|
if (!propvalue) {
|
|
dev_err(dev, "Could not get the value for property %s\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!strncmp(propname, mode_prefix, mode_prefix_len))
|
|
plat_data->count++;
|
|
}
|
|
|
|
plat_data->modes = devm_kcalloc(dev, plat_data->count,
|
|
sizeof(struct reboot_mode_mode), 0);
|
|
|
|
struct reboot_mode_mode *next = plat_data->modes;
|
|
|
|
fdt_for_each_property_offset(property, gd->fdt_blob, node) {
|
|
propvalue = fdt_getprop_by_offset(gd->fdt_blob,
|
|
property, &propname, NULL);
|
|
if (!propvalue) {
|
|
dev_err(dev, "Could not get the value for property %s\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!strncmp(propname, mode_prefix, mode_prefix_len)) {
|
|
next->mode_name = &propname[mode_prefix_len];
|
|
next->mode_id = fdt32_to_cpu(*propvalue);
|
|
|
|
next++;
|
|
}
|
|
}
|
|
#else
|
|
if (!plat_data->env_variable)
|
|
plat_data->env_variable = "reboot-mode";
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(reboot_mode) = {
|
|
.name = "reboot-mode",
|
|
.id = UCLASS_REBOOT_MODE,
|
|
.pre_probe = dm_reboot_mode_pre_probe,
|
|
.per_device_plat_auto =
|
|
sizeof(struct reboot_mode_uclass_platdata),
|
|
};
|