80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation <www.intel.com>
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#ifndef _FS_LOADER_H_
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#define _FS_LOADER_H_
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#include <dm.h>
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/**
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* struct firmware - A place for storing firmware and its attribute data.
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*
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* This holds information about a firmware and its content.
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*
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* @size: Size of a file
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* @data: Buffer for file
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* @priv: Firmware loader private fields
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*/
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struct firmware {
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size_t size;
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const u8 *data;
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void *priv;
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};
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/**
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* struct phandle_part - A place for storing phandle of node and its partition
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*
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* This holds information about a phandle of the block device, and its
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* partition where the firmware would be loaded from.
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*
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* @phandle: Phandle of storage device node
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* @partition: Partition of block device
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*/
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struct phandle_part {
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u32 phandle;
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u32 partition;
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};
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/**
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* struct phandle_part - A place for storing all supported storage devices
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*
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* This holds information about all supported storage devices for driver use.
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*
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* @phandlepart: Attribute data for block device.
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* @mtdpart: MTD partition for ubi partition.
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* @ubivol: UBI volume-name for ubifsmount.
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*/
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struct device_platdata {
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struct phandle_part phandlepart;
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char *mtdpart;
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char *ubivol;
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};
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/**
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* release_firmware - Release the resource associated with a firmware image
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* @firmware: Firmware resource to release
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*/
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void release_firmware(struct firmware *firmware);
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/**
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* request_firmware_into_buf - Load firmware into a previously allocated buffer.
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* @plat: Platform data such as storage and partition firmware loading from.
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* @name: Name of firmware file.
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* @buf: Address of buffer to load firmware into.
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* @size: Size of buffer.
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* @offset: Offset of a file for start reading into buffer.
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* @firmwarep: Pointer to firmware image.
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*
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* The firmware is loaded directly into the buffer pointed to by @buf and
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* the @firmwarep data member is pointed at @buf.
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*
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* Return: Size of total read, negative value when error.
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*/
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int request_firmware_into_buf(struct device_platdata *plat,
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const char *name,
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void *buf, size_t size, u32 offset,
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struct firmware **firmwarep);
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#endif
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