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/*
* (C) Copyright 2013
*
* Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _IMAGETOOL_H_
#define _IMAGETOOL_H_
#include "os_support.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <u-boot/sha1.h>
/* define __KERNEL__ in order to get the definitions
* required by the linker list. This is probably not
* the best way to do this */
#ifndef __KERNEL__
#define __KERNEL__
#include <linker_lists.h>
#undef __KERNEL__
#endif /* __KERNEL__ */
#include "fdt_host.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define IH_ARCH_DEFAULT IH_ARCH_INVALID
/*
* This structure defines all such variables those are initialized by
* mkimage and dumpimage main core and need to be referred by image
* type specific functions
*/
struct image_tool_params {
int dflag;
int eflag;
int fflag;
int iflag;
int lflag;
int pflag;
int vflag;
int xflag;
int skipcpy;
int os;
int arch;
int type;
int comp;
char *dtc;
unsigned int addr;
unsigned int ep;
char *imagename;
char *imagename2;
char *datafile;
char *imagefile;
char *cmdname;
const char *outfile; /* Output filename */
const char *keydir; /* Directory holding private keys */
const char *keydest; /* Destination .dtb for public key */
const char *comment; /* Comment to add to signature node */
int require_keys; /* 1 to mark signing keys as 'required' */
};
/*
* image type specific variables and callback functions
*/
struct image_type_params {
/* name is an identification tag string for added support */
char *name;
/*
* header size is local to the specific image type to be supported,
* mkimage core treats this as number of bytes
*/
uint32_t header_size;
/* Image type header pointer */
void *hdr;
/*
* There are several arguments that are passed on the command line
* and are registered as flags in image_tool_params structure.
* This callback function can be used to check the passed arguments
* are in-lined with the image type to be supported
*
* Returns 1 if parameter check is successful
*/
int (*check_params) (struct image_tool_params *);
/*
* This function is used by list command (i.e. mkimage -l <filename>)
* image type verification code must be put here
*
* Returns 0 if image header verification is successful
* otherwise, returns respective negative error codes
*/
int (*verify_header) (unsigned char *, int, struct image_tool_params *);
/* Prints image information abstracting from image header */
void (*print_header) (const void *);
/*
* The header or image contents need to be set as per image type to
* be generated using this callback function.
* further output file post processing (for ex. checksum calculation,
* padding bytes etc..) can also be done in this callback function.
*/
void (*set_header) (void *, struct stat *, int,
struct image_tool_params *);
/*
* This function is used by the command to retrieve a component
* (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
* <sub-image-name>).
* Thus the code to extract a file from an image must be put here.
*
* Returns 0 if the file was successfully retrieved from the image,
* or a negative value on error.
*/
int (*extract_subimage)(void *, struct image_tool_params *);
/*
* Some image generation support for ex (default image type) supports
* more than one type_ids, this callback function is used to check
* whether input (-T <image_type>) is supported by registered image
* generation/list low level code
*/
int (*check_image_type) (uint8_t);
/* This callback function will be executed if fflag is defined */
int (*fflag_handle) (struct image_tool_params *);
/*
* This callback function will be executed for variable size record
* It is expected to build this header in memory and return its length
* and a pointer to it by using image_type_params.header_size and
* image_type_params.hdr. The return value shall indicate if an
* additional padding should be used when copying the data image
* by returning the padding length.
*/
int (*vrec_header) (struct image_tool_params *,
struct image_type_params *);
};
/**
* imagetool_get_type() - find the image type params for a given image type
*
* It scans all registers image type supports
* checks the input type for each supported image type
*
* if successful,
* returns respective image_type_params pointer if success
* if input type_id is not supported by any of image_type_support
* returns NULL
*/
struct image_type_params *imagetool_get_type(int type);
/*
* imagetool_verify_print_header() - verifies the image header
*
* Scan registered image types and verify the image_header for each
* supported image type. If verification is successful, this prints
* the respective header.
*
* @return 0 on success, negative if input image format does not match with
* any of supported image types
*/
int imagetool_verify_print_header(
void *ptr,
struct stat *sbuf,
struct image_type_params *tparams,
struct image_tool_params *params);
/**
* imagetool_save_subimage - store data into a file
* @file_name: name of the destination file
* @file_data: data to be written
* @file_len: the amount of data to store
*
* imagetool_save_subimage() store file_len bytes of data pointed by file_data
* into the file name by file_name.
*
* returns:
* zero in case of success or a negative value if fail.
*/
int imagetool_save_subimage(
const char *file_name,
ulong file_data,
ulong file_len);
/*
* There is a c file associated with supported image type low level code
* for ex. default_image.c, fit_image.c
*/
void pbl_load_uboot(int fd, struct image_tool_params *mparams);
#define U_BOOT_IMAGE_TYPE( \
_id, \
_name, \
_header_size, \
_header, \
_check_params, \
_verify_header, \
_print_header, \
_set_header, \
_extract_subimage, \
_check_image_type, \
_fflag_handle, \
_vrec_header \
) \
ll_entry_declare(struct image_type_params, _id, image_type) = { \
.name = _name, \
.header_size = _header_size, \
.hdr = _header, \
.check_params = _check_params, \
.verify_header = _verify_header, \
.print_header = _print_header, \
.set_header = _set_header, \
.extract_subimage = _extract_subimage, \
.check_image_type = _check_image_type, \
.fflag_handle = _fflag_handle, \
.vrec_header = _vrec_header \
}
#endif /* _IMAGETOOL_H_ */
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