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/*
* Copyright (C) 2018 Intel Corporation <www.intel.com>
*
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef _FS_LOADER_H_
#define _FS_LOADER_H_
struct udevice;
/**
* struct phandle_part - A place for storing phandle of node and its partition
*
* This holds information about a phandle of the block device, and its
* partition where the firmware would be loaded from.
*
* @phandle: Phandle of storage device node
* @partition: Partition of block device
*/
struct phandle_part {
u32 phandle;
u32 partition;
};
/**
* struct phandle_part - A place for storing all supported storage devices
*
* This holds information about all supported storage devices for driver use.
*
* @phandlepart: Attribute data for block device.
* @mtdpart: MTD partition for ubi partition.
* @ubivol: UBI volume-name for ubifsmount.
*/
struct device_plat {
struct phandle_part phandlepart;
char *mtdpart;
char *ubivol;
};
/**
* request_firmware_into_buf - Load firmware into a previously allocated buffer.
* @dev: An instance of a driver.
* @name: Name of firmware file.
* @buf: Address of buffer to load firmware into.
* @size: Size of buffer.
* @offset: Offset of a file for start reading into buffer.
*
* The firmware is loaded directly into the buffer pointed to by @buf.
*
* Return: Size of total read, negative value when error.
*/
int request_firmware_into_buf(struct udevice *dev,
const char *name,
void *buf, size_t size, u32 offset);
/**
* get_fs_loader() - Get the chosen filesystem loader
* @dev: Where to store the device
*
* This gets a filesystem loader device based on the value of
* /chosen/firmware-loader. If no such property exists, it returns a
* firmware loader which is configured by environmental variables.
*
* Return: 0 on success, negative value on error
*/
int get_fs_loader(struct udevice **dev);
/**
* request_firmware_into_buf_via_script() -
* Load firmware using a U-Boot script and copy to buffer
* @buf: Pointer to a pointer where the firmware buffer will be stored.
* @max_size: Maximum allowed size for the firmware to be loaded.
* @script_name: Name of the U-Boot script to execute for firmware loading.
* @retsize: Return the actual firmware data size (optional).
*
* Executes a U-Boot script (@script_name) that loads firmware into
* memory and sets the environment variables 'fw_addr' (address) and
* 'fw_size' (size in bytes). On success, copies the firmware
* from the given address to user buffer @buf.
*
* The script must set these environment variables:
* fw_addr - Address where firmware is loaded in memory
* fw_size - Size of the firmware in bytes
*
* The script should be defined in the U-Boot environment, for example:
* env set script_name 'load mmc 0:1 ${loadaddr} firmware.bin &&
* env set fw_addr ${loadaddr} && env set fw_size ${filesize}
* Return: 0 on success, negative value on error.
*/
int request_firmware_into_buf_via_script(void **buf, size_t max_size,
const char *script_name,
size_t *retsize);
#endif
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