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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_
#include <dm.h>
/**
* struct firmware - A place for storing firmware and its attribute data.
*
* This holds information about a firmware and its content.
*
* @size: Size of a file
* @data: Buffer for file
* @priv: Firmware loader private fields
*/
struct firmware {
size_t size;
const u8 *data;
void *priv;
};
/**
* 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_platdata {
struct phandle_part phandlepart;
char *mtdpart;
char *ubivol;
};
/**
* release_firmware - Release the resource associated with a firmware image
* @firmware: Firmware resource to release
*/
void release_firmware(struct firmware *firmware);
/**
* request_firmware_into_buf - Load firmware into a previously allocated buffer.
* @plat: Platform data such as storage and partition firmware loading from.
* @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.
* @firmwarep: Pointer to firmware image.
*
* The firmware is loaded directly into the buffer pointed to by @buf and
* the @firmwarep data member is pointed at @buf.
*
* Return: Size of total read, negative value when error.
*/
int request_firmware_into_buf(struct device_platdata *plat,
const char *name,
void *buf, size_t size, u32 offset,
struct firmware **firmwarep);
#endif
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