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Diffstat (limited to 'utils/atj2137/atjboottool/fw.c')
-rw-r--r--utils/atj2137/atjboottool/fw.c213
1 files changed, 213 insertions, 0 deletions
diff --git a/utils/atj2137/atjboottool/fw.c b/utils/atj2137/atjboottool/fw.c
new file mode 100644
index 0000000000..07ce4e2f31
--- /dev/null
+++ b/utils/atj2137/atjboottool/fw.c
@@ -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;
+}