upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
168 lines
3.9 KiB
168 lines
3.9 KiB
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __CBFS_H
|
|
#define __CBFS_H
|
|
|
|
#include <compiler.h>
|
|
#include <linux/compiler.h>
|
|
|
|
enum cbfs_result {
|
|
CBFS_SUCCESS = 0,
|
|
CBFS_NOT_INITIALIZED,
|
|
CBFS_BAD_HEADER,
|
|
CBFS_BAD_FILE,
|
|
CBFS_FILE_NOT_FOUND
|
|
};
|
|
|
|
enum cbfs_filetype {
|
|
CBFS_TYPE_STAGE = 0x10,
|
|
CBFS_TYPE_PAYLOAD = 0x20,
|
|
CBFS_TYPE_OPTIONROM = 0x30,
|
|
CBFS_TYPE_BOOTSPLASH = 0x40,
|
|
CBFS_TYPE_RAW = 0x50,
|
|
CBFS_TYPE_VSA = 0x51,
|
|
CBFS_TYPE_MBI = 0x52,
|
|
CBFS_TYPE_MICROCODE = 0x53,
|
|
CBFS_COMPONENT_CMOS_DEFAULT = 0xaa,
|
|
CBFS_COMPONENT_CMOS_LAYOUT = 0x01aa
|
|
};
|
|
|
|
struct cbfs_header {
|
|
u32 magic;
|
|
u32 version;
|
|
u32 rom_size;
|
|
u32 boot_block_size;
|
|
u32 align;
|
|
u32 offset;
|
|
u32 pad[2];
|
|
} __packed;
|
|
|
|
struct cbfs_fileheader {
|
|
u8 magic[8];
|
|
u32 len;
|
|
u32 type;
|
|
u32 checksum;
|
|
u32 offset;
|
|
} __packed;
|
|
|
|
struct cbfs_cachenode {
|
|
struct cbfs_cachenode *next;
|
|
u32 type;
|
|
void *data;
|
|
u32 data_length;
|
|
char *name;
|
|
u32 name_length;
|
|
u32 checksum;
|
|
} __packed;
|
|
|
|
extern enum cbfs_result file_cbfs_result;
|
|
|
|
/**
|
|
* file_cbfs_error() - Return a string describing the most recent error
|
|
* condition.
|
|
*
|
|
* @return A pointer to the constant string.
|
|
*/
|
|
const char *file_cbfs_error(void);
|
|
|
|
/**
|
|
* file_cbfs_init() - Initialize the CBFS driver and load metadata into RAM.
|
|
*
|
|
* @end_of_rom: Points to the end of the ROM the CBFS should be read
|
|
* from.
|
|
*/
|
|
void file_cbfs_init(uintptr_t end_of_rom);
|
|
|
|
/**
|
|
* file_cbfs_get_header() - Get the header structure for the current CBFS.
|
|
*
|
|
* @return A pointer to the constant structure, or NULL if there is none.
|
|
*/
|
|
const struct cbfs_header *file_cbfs_get_header(void);
|
|
|
|
/**
|
|
* file_cbfs_get_first() - Get a handle for the first file in CBFS.
|
|
*
|
|
* @return A handle for the first file in CBFS, NULL on error.
|
|
*/
|
|
const struct cbfs_cachenode *file_cbfs_get_first(void);
|
|
|
|
/**
|
|
* file_cbfs_get_next() - Get a handle to the file after this one in CBFS.
|
|
*
|
|
* @file: A pointer to the handle to advance.
|
|
*/
|
|
void file_cbfs_get_next(const struct cbfs_cachenode **file);
|
|
|
|
/**
|
|
* file_cbfs_find() - Find a file with a particular name in CBFS.
|
|
*
|
|
* @name: The name to search for.
|
|
*
|
|
* @return A handle to the file, or NULL on error.
|
|
*/
|
|
const struct cbfs_cachenode *file_cbfs_find(const char *name);
|
|
|
|
|
|
/***************************************************************************/
|
|
/* All of the functions below can be used without first initializing CBFS. */
|
|
/***************************************************************************/
|
|
|
|
/**
|
|
* file_cbfs_find_uncached() - Find a file with a particular name in CBFS
|
|
* without using the heap.
|
|
*
|
|
* @end_of_rom: Points to the end of the ROM the CBFS should be read
|
|
* from.
|
|
* @name: The name to search for.
|
|
*
|
|
* @return A handle to the file, or NULL on error.
|
|
*/
|
|
const struct cbfs_cachenode *file_cbfs_find_uncached(uintptr_t end_of_rom,
|
|
const char *name);
|
|
|
|
/**
|
|
* file_cbfs_name() - Get the name of a file in CBFS.
|
|
*
|
|
* @file: The handle to the file.
|
|
*
|
|
* @return The name of the file, NULL on error.
|
|
*/
|
|
const char *file_cbfs_name(const struct cbfs_cachenode *file);
|
|
|
|
/**
|
|
* file_cbfs_size() - Get the size of a file in CBFS.
|
|
*
|
|
* @file: The handle to the file.
|
|
*
|
|
* @return The size of the file, zero on error.
|
|
*/
|
|
u32 file_cbfs_size(const struct cbfs_cachenode *file);
|
|
|
|
/**
|
|
* file_cbfs_type() - Get the type of a file in CBFS.
|
|
*
|
|
* @file: The handle to the file.
|
|
*
|
|
* @return The type of the file, zero on error.
|
|
*/
|
|
u32 file_cbfs_type(const struct cbfs_cachenode *file);
|
|
|
|
/**
|
|
* file_cbfs_read() - Read a file from CBFS into RAM
|
|
*
|
|
* @file: A handle to the file to read.
|
|
* @buffer: Where to read it into memory.
|
|
* @maxsize: Maximum number of bytes to read
|
|
*
|
|
* @return If positive or zero, the number of characters read. If negative, an
|
|
* error occurred.
|
|
*/
|
|
long file_cbfs_read(const struct cbfs_cachenode *file, void *buffer,
|
|
unsigned long maxsize);
|
|
|
|
#endif /* __CBFS_H */
|
|
|