tools/imagetool.h

   1 /*
   2  * (C) Copyright 2013
   3  *
   4  * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef _IMAGETOOL_H_
  10 #define _IMAGETOOL_H_
  11
  12 #include "os_support.h"
  13 #include <errno.h>
  14 #include <fcntl.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <sys/stat.h>
  19 #include <time.h>
  20 #include <unistd.h>
  21 #include <u-boot/sha1.h>
  22 #include "fdt_host.h"
  23
  24 #define ARRAY_SIZE(x)           (sizeof(x) / sizeof((x)[0]))
  25
  26 #define IH_ARCH_DEFAULT         IH_ARCH_INVALID
  27
  28 /*
  29  * This structure defines all such variables those are initialized by
  30  * mkimage and dumpimage main core and need to be referred by image
  31  * type specific functions
  32  */
  33 struct image_tool_params {
  34         int dflag;
  35         int eflag;
  36         int fflag;
  37         int iflag;
  38         int lflag;
  39         int pflag;
  40         int vflag;
  41         int xflag;
  42         int skipcpy;
  43         int os;
  44         int arch;
  45         int type;
  46         int comp;
  47         char *dtc;
  48         unsigned int addr;
  49         unsigned int ep;
  50         char *imagename;
  51         char *imagename2;
  52         char *datafile;
  53         char *imagefile;
  54         char *cmdname;
  55         const char *outfile;    /* Output filename */
  56         const char *keydir;     /* Directory holding private keys */
  57         const char *keydest;    /* Destination .dtb for public key */
  58         const char *comment;    /* Comment to add to signature node */
  59         int require_keys;       /* 1 to mark signing keys as 'required' */
  60 };
  61
  62 /*
  63  * image type specific variables and callback functions
  64  */
  65 struct image_type_params {
  66         /* name is an identification tag string for added support */
  67         char *name;
  68         /*
  69          * header size is local to the specific image type to be supported,
  70          * mkimage core treats this as number of bytes
  71          */
  72         uint32_t header_size;
  73         /* Image type header pointer */
  74         void *hdr;
  75         /*
  76          * There are several arguments that are passed on the command line
  77          * and are registered as flags in image_tool_params structure.
  78          * This callback function can be used to check the passed arguments
  79          * are in-lined with the image type to be supported
  80          *
  81          * Returns 1 if parameter check is successful
  82          */
  83         int (*check_params) (struct image_tool_params *);
  84         /*
  85          * This function is used by list command (i.e. mkimage -l <filename>)
  86          * image type verification code must be put here
  87          *
  88          * Returns 0 if image header verification is successful
  89          * otherwise, returns respective negative error codes
  90          */
  91         int (*verify_header) (unsigned char *, int, struct image_tool_params *);
  92         /* Prints image information abstracting from image header */
  93         void (*print_header) (const void *);
  94         /*
  95          * The header or image contents need to be set as per image type to
  96          * be generated using this callback function.
  97          * further output file post processing (for ex. checksum calculation,
  98          * padding bytes etc..) can also be done in this callback function.
  99          */
 100         void (*set_header) (void *, struct stat *, int,
 101                                         struct image_tool_params *);
 102         /*
 103          * This function is used by the command to retrieve a data file from
 104          * the image (i.e. dumpimage -i <image> -p <position> <data_file>).
 105          * Thus the code to extract a file from an image must be put here.
 106          *
 107          * Returns 0 if the file was successfully retrieved from the image,
 108          * or a negative value on error.
 109          */
 110         int (*extract_datafile) (void *, struct image_tool_params *);
 111         /*
 112          * Some image generation support for ex (default image type) supports
 113          * more than one type_ids, this callback function is used to check
 114          * whether input (-T <image_type>) is supported by registered image
 115          * generation/list low level code
 116          */
 117         int (*check_image_type) (uint8_t);
 118         /* This callback function will be executed if fflag is defined */
 119         int (*fflag_handle) (struct image_tool_params *);
 120         /*
 121          * This callback function will be executed for variable size record
 122          * It is expected to build this header in memory and return its length
 123          * and a pointer to it by using image_type_params.header_size and
 124          * image_type_params.hdr. The return value shall indicate if an
 125          * additional padding should be used when copying the data image
 126          * by returning the padding length.
 127          */
 128         int (*vrec_header) (struct image_tool_params *,
 129                 struct image_type_params *);
 130         /* pointer to the next registered entry in linked list */
 131         struct image_type_params *next;
 132 };
 133
 134 /*
 135  * Tool registration function.
 136  */
 137 typedef void (*imagetool_register_t)(struct image_type_params *);
 138
 139 /*
 140  * Initializes all image types with the given registration callback
 141  * function.
 142  * An image tool uses this function to initialize all image types.
 143  */
 144 void register_image_tool(imagetool_register_t image_register);
 145
 146 /*
 147  * Register a image type within a tool.
 148  * An image type uses this function to register itself within
 149  * all tools.
 150  */
 151 void register_image_type(struct image_type_params *tparams);
 152
 153 /*
 154  * There is a c file associated with supported image type low level code
 155  * for ex. default_image.c, fit_image.c
 156  * init_xxx_type() is the only function referred by image tool core to avoid
 157  * a single lined header file, you can define them here
 158  *
 159  * Supported image types init functions
 160  */
 161 void init_default_image_type(void);
 162 void init_atmel_image_type(void);
 163 void init_pbl_image_type(void);
 164 void init_ais_image_type(void);
 165 void init_kwb_image_type(void);
 166 void init_imx_image_type(void);
 167 void init_mxs_image_type(void);
 168 void init_fit_image_type(void);
 169 void init_ubl_image_type(void);
 170 void init_omap_image_type(void);
 171 void init_socfpga_image_type(void);
 172 void init_gpimage_type(void);
 173
 174 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
 175
 176 #endif /* _IMAGETOOL_H_ */