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atjboottool: put afi and fw code in its own files

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Change-Id: I16347ebee0f82d5fdf32f5aa8f955c07fe148eba
This commit is contained in:
Amaury Pouly 2017-09-29 18:22:30 +02:00
parent 95c32a505a
commit ea679de837
7 changed files with 500 additions and 393 deletions
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213
utils/atj2137/atjboottool/fw.c Normal file
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@ -0,0 +1,213 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2017 Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "misc.h"
#include "fw.h"
#include "afi.h"
#define FW_SIG_SIZE 4
#define FW_ENTRIES 240
struct fw_entry_t
{
char name[8];
char ext[3];
uint8_t attr;
uint8_t res[2];
uint16_t version;
uint32_t block_offset; // offset shift by 9
uint32_t size;
uint32_t unk;
uint32_t checksum;
} __attribute__((packed));
struct fw_hdr_t
{
uint8_t sig[FW_SIG_SIZE];
uint32_t res[4];
uint8_t year[2];
uint8_t month;
uint8_t day;
uint16_t usb_vid;
uint16_t usb_pid;
uint32_t checksum;
char productor[16];
char str2[16];
char str3[32];
char dev_name[32];
uint8_t res2[8 * 16];
char usb_name1[8];
char usb_name2[8];
char res3[4 * 16 + 1];
char mtp_name1[33];
char mtp_name2[33];
char mtp_ver[33];
uint16_t mtp_vid;
uint16_t mtp_pid;
char fw_ver[64];
uint32_t res4[2];
struct fw_entry_t entry[FW_ENTRIES];
} __attribute__((packed));
/* the s1fwx source code has a layout but it does not make any sense for firmwares
* found in ATJ2127 for example. In doubt just don't do anything */
struct fw_hdr_f0_t
{
uint8_t sig[FW_SIG_SIZE];
uint8_t res[12];
uint32_t checksum;
uint8_t res2[492];
struct fw_entry_t entry[FW_ENTRIES];
} __attribute__((packed));
const uint8_t g_fw_signature_f2[FW_SIG_SIZE] =
{
0x55, 0xaa, 0xf2, 0x0f
};
const uint8_t g_fw_signature_f0[FW_SIG_SIZE] =
{
0x55, 0xaa, 0xf0, 0x0f
};
static void build_filename_fw(char buf[16], struct fw_entry_t *ent)
{
int pos = 0;
for(int i = 0; i < 8 && ent->name[i] != ' '; i++)
buf[pos++] = ent->name[i];
buf[pos++] = '.';
for(int i = 0; i < 3 && ent->ext[i] != ' '; i++)
buf[pos++] = ent->ext[i];
buf[pos] = 0;
}
int fw_unpack(uint8_t *buf, size_t size, fw_extract_callback_t unpack_cb)
{
struct fw_hdr_t *hdr = (void *)buf;
if(size < sizeof(struct fw_hdr_t))
{
cprintf(GREY, "File too small\n");
return 1;
}
cprintf(BLUE, "Header\n");
cprintf(GREEN, " Signature:");
for(int i = 0; i < FW_SIG_SIZE; i++)
cprintf(YELLOW, " %02x", hdr->sig[i]);
int variant = 0;
if(memcmp(hdr->sig, g_fw_signature_f2, FW_SIG_SIZE) == 0)
{
variant = 0xf2;
cprintf(RED, " Ok (f2 variant)\n");
}
else if(memcmp(hdr->sig, g_fw_signature_f0, FW_SIG_SIZE) == 0)
{
variant = 0xf0;
cprintf(RED, " Ok (f0 variant)\n");
}
else
{
cprintf(RED, " Mismatch\n");
return 1;
}
/* both variants have the same header size, only the fields differ */
if(variant == 0xf2)
{
cprintf_field(" USB VID: ", "0x%x\n", hdr->usb_vid);
cprintf_field(" USB PID: ", "0x%x\n", hdr->usb_pid);
cprintf_field(" Date: ", "%x/%x/%02x%02x\n", hdr->day, hdr->month, hdr->year[0], hdr->year[1]);
cprintf_field(" Checksum: ", "%x\n", hdr->checksum);
cprintf_field(" Productor: ", "%.16s\n", hdr->productor);
cprintf_field(" String 2: ", "%.16s\n", hdr->str2);
cprintf_field(" String 3: ", "%.32s\n", hdr->str3);
cprintf_field(" Device Name: ", "%.32s\n", hdr->dev_name);
cprintf(GREEN, " Unknown:\n");
for(int i = 0; i < 8; i++)
{
cprintf(YELLOW, " ");
for(int j = 0; j < 16; j++)
cprintf(YELLOW, "%02x ", hdr->res2[i * 16 + j]);
cprintf(YELLOW, "\n");
}
cprintf_field(" USB Name 1: ", "%.8s\n", hdr->usb_name1);
cprintf_field(" USB Name 2: ", "%.8s\n", hdr->usb_name2);
cprintf_field(" MTP Name 1: ", "%.32s\n", hdr->mtp_name1);
cprintf_field(" MTP Name 2: ", "%.32s\n", hdr->mtp_name2);
cprintf_field(" MTP Version: ", "%.32s\n", hdr->mtp_ver);
cprintf_field(" MTP VID: ", "0x%x\n", hdr->mtp_vid);
cprintf_field(" MTP PID: ", "0x%x\n", hdr->mtp_pid);
cprintf_field(" FW Version: ", "%.64s\n", hdr->fw_ver);
}
else
{
/* struct fw_hdr_f0_t *hdr_f0 = (void *)hdr; */
cprintf(GREEN, " Header not dumped because format is unclear.\n");
}
cprintf(BLUE, "Entries\n");
for(int i = 0; i < FW_ENTRIES; i++)
{
if(hdr->entry[i].name[0] == 0)
continue;
struct fw_entry_t *entry = &hdr->entry[i];
char filename[16];
build_filename_fw(filename, entry);
cprintf(RED, " %s\n", filename);
cprintf_field(" Attr: ", "%02x\n", entry->attr);
cprintf_field(" Offset: ", "0x%x\n", entry->block_offset << 9);
cprintf_field(" Size: ", "0x%x\n", entry->size);
cprintf_field(" Unknown: ", "%x\n", entry->unk);
cprintf_field(" Checksum: ", "0x%x ", entry->checksum);
uint32_t chk = afi_checksum(buf + (entry->block_offset << 9), entry->size);
if(chk != entry->checksum)
{
cprintf(RED, "Mismatch\n");
return 1;
}
else
cprintf(RED, "Ok\n");
int ret = unpack_cb(filename, buf + (entry->block_offset << 9), entry->size);
if(ret != 0)
return ret;
}
return 0;
}
bool fw_check(uint8_t *buf, size_t size)
{
struct fw_hdr_t *hdr = (void *)buf;
if(size < sizeof(struct fw_hdr_t))
return false;
if(memcmp(hdr->sig, g_fw_signature_f2, FW_SIG_SIZE) == 0)
return true;
if(memcmp(hdr->sig, g_fw_signature_f0, FW_SIG_SIZE) == 0)
return true;
return false;
}