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- /*
- gba.c - Game Boy Advance support for uCON64
- Copyright (c) 2001 NoisyB <noisyb@gmx.net>
- Copyright (c) 2001 - 2004 dbjh
- 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 program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #include <sys/stat.h>
- #include "misc/file.h"
- #include "misc/misc.h"
- #include "misc/property.h"
- #ifdef USE_ZLIB
- #include "misc/archive.h"
- #endif
- #include "misc/getopt2.h" // st_getopt2_t
- #include "misc/string.h"
- #include "ucon64.h"
- #include "ucon64_misc.h"
- #include "gba.h"
- #include "backup/fal.h"
- #define GBA_NAME_LEN 12
- #define GBA_HEADER_START 0
- #define GBA_HEADER_LEN (sizeof (st_gba_header_t))
- static int gba_chksum (void);
- const st_getopt2_t gba_usage[] =
- {
- {
- NULL, 0, 0, 0,
- NULL, "Game Boy Advance"/*"2001 Nintendo http://www.nintendo.com"*/,
- NULL
- },
- {
- "gba", 0, 0, UCON64_GBA,
- NULL, "force recognition",
- &ucon64_wf[WF_OBJ_GBA_SWITCH]
- },
- {
- "n", 1, 0, UCON64_N,
- "NEW_NAME", "change internal ROM name to NEW_NAME",
- &ucon64_wf[WF_OBJ_ALL_DEFAULT]
- },
- {
- "logo", 0, 0, UCON64_LOGO,
- NULL, "restore ROM logo character data (offset: 0x04-0x9F)",
- &ucon64_wf[WF_OBJ_ALL_DEFAULT]
- },
- {
- "chk", 0, 0, UCON64_CHK,
- NULL, "fix ROM header checksum",
- &ucon64_wf[WF_OBJ_ALL_DEFAULT]
- },
- {
- "sram", 0, 0, UCON64_SRAM,
- NULL, "patch ROM for SRAM saving",
- &ucon64_wf[WF_OBJ_GBA_DEFAULT]
- },
- {
- "crp", 1, 0, UCON64_CRP,
- "WAIT_TIME", "slow down ROM access (\"crash patch\");\n"
- "WAIT_TIME=0 default in most crash patches\n"
- "WAIT_TIME=4 faster than 0, slower than 8\n"
- "WAIT_TIME=8 faster than 4, slower than 28\n"
- "WAIT_TIME=12 slowest cartridge access speed\n"
- "WAIT_TIME=16 faster than 28, but slower than 20\n"
- "WAIT_TIME=20 default in most original cartridges\n"
- "WAIT_TIME=24 fastest cartridge access speed\n"
- "WAIT_TIME=28 faster than 8 but slower than 16",
- &ucon64_wf[WF_OBJ_GBA_DEFAULT]
- },
- // "n 0 and 28, with a stepping of 4. I.e. 0, 4, 8, 12 ...\n"
- {
- "multi", 1, 0, UCON64_MULTI,
- "SIZE", "make multi-game file for use with FAL/F2A flash card, truncated\n"
- "to SIZE Mbit; file with loader must be specified first, then\n"
- "all the ROMs, multi-game file to create last",
- &ucon64_wf[WF_OBJ_ALL_INIT_PROBE_STOP]
- },
- {NULL, 0, 0, 0, NULL, NULL, NULL}
- };
- /*
- Offset 00h-03h - Start Address - A 32 bit ARM B command with jump destination
- to the start address of the program, cannot be manipulated
- with this tool, there's no reason.
- Offset 04h-9fh - Nintendo logo character data - The fix Nintendo logo graphics
- needed to start a ROM on the real machine as it is verified
- by it.
- Offset a0h-abh - Game title - The game title is an ASCII string, officially
- can use only ASCII characters between the ASCII code 20h and
- 60h. Although it is not a strict rule for hobby programmers,
- it is fun to follow such a rules in my opinion. As I know
- developers can choose their own game title here describing
- the product in short.
- Offset ach-afh - Game code - The 4 bytes long code of the game is an ASCII
- string too, officially can use only ASCII characters between
- the ASCII code 20h and 60h. The first letter is always A as I
- know, probably stands for GBA, so it won't change unless a
- higher hardware with backwards compatibility won't be
- introduced and this letter could hold some more infos about
- it. The second and third letters are the shortened version of
- the name of the game. And the fourth letter is the territory
- code. Don't afraid, there's no territory lockout, this is for
- information purposes only. So far as I know J stands for
- Japan and Asia, E stands for USA and the whole American
- continent and P stands for Europe, Australia and Africa
- (probably came from that these are the PAL video standard
- territories, but I could be wrong). Although it is not a
- strict rule for hobby programmers, it is fun to follow such a
- rules in my opinion. Developers get this 4 letter code right
- from Nintendo and they have to use that.
- Offset b0h-b1h - Maker code - The 2 bytes long code of the developer company
- is an ASCII string too, officially can use only ASCII
- characters between the ASCII code 20h and 60h. Although it is
- not a strict rule for hobby programmers, it is fun to follow
- such a rules in my opinion. Developers get this 2 letter code
- right from Nintendo and they have to use that.
- Offset b2h-b2h - 96h - Fixed 96h byte without any useful information.
- Offset b3h-b3h - Main unit code - This hexadecimal byte is the destination
- hardware code. It is always 00h at the moment as it stands
- for Game Boy Advance, so it won't change in the future either
- unless a higher hardware with backwards compatibility won't
- be introduced and this byte could hold some more infos about
- it. There's no reason to change this or write something
- different than 00h into it.
- Offset b4h-b4h - Device type - This hexadecimal byte is the device type code.
- It is always 00h as the only other possible value stands for
- a debugger cart what I assume won't be available on the
- streets and I assume even if a developer works with such a
- hardware, he or she doesn't have to change this byte, however
- he or she easily can of course. So there's no reason to
- change this or write something different than 00h into it.
- Offset b5h-bbh - Reserved area - Fixed, 00h filled area without any useful
- information.
- Offset bch-bch - Mask ROM version number - This hexadecimal byte holds the
- version number of the ROM. As I know it works somehow that
- way, the first published (and released on the streets) is
- always the first version and for that 00h is stored here. In
- the case it is getting updated, so in the same territory the
- very same game with the very same title is getting replaced
- with a new version, what is happening rarely, the number here
- is getting increased by one. So usually this byte holds 00h
- and there isn't too much reason to write something here and
- something else than 00h.
- Offset bdh-bdh - Complement check - This hexadecimal byte have to be
- calculated automatically, when the whole header is in its
- final state, so nothing will change inside of it. (Manually
- it would be hard to calculate.) Add the bytes between offset
- a0h and bch together, take the number's two's complement and
- add 19h to the result. Store the lowest 8 bits here. Or
- calculate automatically with GBARM. The hardware is
- verifying this byte just like the Nintendo logo character
- data and in the case it isn't correct, the game won't start
- on the real machine.
- Offset beh-bfh - Reserved area - Fixed, 00h filled area without any useful
- information.
- */
- typedef struct st_gba_header
- {
- unsigned char start[4]; // 0x00
- unsigned char logo[GBA_LOGODATA_LEN]; // 0x04
- unsigned char name[GBA_NAME_LEN]; // 0xa0
- unsigned char game_id_prefix; // 0xac
- unsigned char game_id_low; // 0xad
- unsigned char game_id_high; // 0xae
- unsigned char game_id_country; // 0xaf
- unsigned char maker_high; // 0xb0
- unsigned char maker_low; // 0xb1
- unsigned char pad1;
- unsigned char gba_type; // 0xb3
- unsigned char device_type; // 0xb4
- unsigned char pad2[7];
- unsigned char version; // 0xbc
- unsigned char checksum; // 0xbd
- unsigned char pad3[2];
- } st_gba_header_t;
- static st_gba_header_t gba_header;
- const unsigned char gba_logodata[] = // Note: not a static variable
- {
- 0x24, 0xff, 0xae, 0x51,
- 0x69, 0x9a, 0xa2, 0x21, 0x3d, 0x84, 0x82, 0x0a,
- 0x84, 0xe4, 0x09, 0xad, 0x11, 0x24, 0x8b, 0x98,
- 0xc0, 0x81, 0x7f, 0x21, 0xa3, 0x52, 0xbe, 0x19,
- 0x93, 0x09, 0xce, 0x20, 0x10, 0x46, 0x4a, 0x4a,
- 0xf8, 0x27, 0x31, 0xec, 0x58, 0xc7, 0xe8, 0x33,
- 0x82, 0xe3, 0xce, 0xbf, 0x85, 0xf4, 0xdf, 0x94,
- 0xce, 0x4b, 0x09, 0xc1, 0x94, 0x56, 0x8a, 0xc0,
- 0x13, 0x72, 0xa7, 0xfc, 0x9f, 0x84, 0x4d, 0x73,
- 0xa3, 0xca, 0x9a, 0x61, 0x58, 0x97, 0xa3, 0x27,
- 0xfc, 0x03, 0x98, 0x76, 0x23, 0x1d, 0xc7, 0x61,
- 0x03, 0x04, 0xae, 0x56, 0xbf, 0x38, 0x84, 0x00,
- 0x40, 0xa7, 0x0e, 0xfd, 0xff, 0x52, 0xfe, 0x03,
- 0x6f, 0x95, 0x30, 0xf1, 0x97, 0xfb, 0xc0, 0x85,
- 0x60, 0xd6, 0x80, 0x25, 0xa9, 0x63, 0xbe, 0x03,
- 0x01, 0x4e, 0x38, 0xe2, 0xf9, 0xa2, 0x34, 0xff,
- 0xbb, 0x3e, 0x03, 0x44, 0x78, 0x00, 0x90, 0xcb,
- 0x88, 0x11, 0x3a, 0x94, 0x65, 0xc0, 0x7c, 0x63,
- 0x87, 0xf0, 0x3c, 0xaf, 0xd6, 0x25, 0xe4, 0x8b,
- 0x38, 0x0a, 0xac, 0x72, 0x21, 0xd4, 0xf8, 0x07
- };
- int
- gba_n (st_rominfo_t *rominfo, const char *name)
- {
- char buf[GBA_NAME_LEN], dest_name[FILENAME_MAX];
- memset (buf, 0, GBA_NAME_LEN);
- strncpy (buf, name, GBA_NAME_LEN);
- strcpy (dest_name, ucon64.rom);
- ucon64_file_handler (dest_name, NULL, 0);
- fcopy (ucon64.rom, 0, ucon64.file_size, dest_name, "wb");
- ucon64_fwrite (buf, GBA_HEADER_START + rominfo->buheader_len + 0xa0, GBA_NAME_LEN,
- dest_name, "r+b");
- printf (ucon64_msg[WROTE], dest_name);
- return 0;
- }
- int
- gba_logo (st_rominfo_t *rominfo)
- {
- char dest_name[FILENAME_MAX];
- strcpy (dest_name, ucon64.rom);
- ucon64_file_handler (dest_name, NULL, 0);
- fcopy (ucon64.rom, 0, ucon64.file_size, dest_name, "wb");
- ucon64_fwrite (gba_logodata, GBA_HEADER_START + rominfo->buheader_len + 0x04,
- GBA_LOGODATA_LEN, dest_name, "r+b");
- printf (ucon64_msg[WROTE], dest_name);
- return 0;
- }
- int
- gba_chk (st_rominfo_t *rominfo)
- {
- char buf, dest_name[FILENAME_MAX];
- strcpy (dest_name, ucon64.rom);
- ucon64_file_handler (dest_name, NULL, 0);
- fcopy (ucon64.rom, 0, ucon64.file_size, dest_name, "wb");
- buf = rominfo->current_internal_crc;
- ucon64_fputc (dest_name, GBA_HEADER_START + rominfo->buheader_len + 0xbd,
- buf, "r+b");
- dumper (stdout, &buf, 1, GBA_HEADER_START + rominfo->buheader_len + 0xbd, DUMPER_HEX);
- printf (ucon64_msg[WROTE], dest_name);
- return 0;
- }
- int
- gba_sram (void)
- // This function is based on Omar Kilani's gbautil 1.1
- {
- unsigned char st_orig[2][10] =
- {
- { 0x0E, 0x48, 0x39, 0x68, 0x01, 0x60, 0x0E, 0x48, 0x79, 0x68 },
- { 0x13, 0x4B, 0x18, 0x60, 0x13, 0x48, 0x01, 0x60, 0x13, 0x49 }
- },
- st_repl[2][10] =
- {
- { 0x00, 0x48, 0x00, 0x47, 0x01, 0xFF, 0xFF, 0x08, 0x79, 0x68 },
- { 0x01, 0x4C, 0x20, 0x47, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0x08 }
- },
- fl_orig[2][24] =
- {
- {
- 0xD0, 0x20, 0x00, 0x05, 0x01, 0x88, 0x01, 0x22, 0x08, 0x1C,
- 0x10, 0x40, 0x02, 0x1C, 0x11, 0x04, 0x08, 0x0C, 0x00, 0x28,
- 0x01, 0xD0, 0x1B, 0xE0
- },
- {
- 0xD0, 0x21, 0x09, 0x05, 0x01, 0x23, 0x0C, 0x4A, 0x08, 0x88,
- 0x18, 0x40, 0x00, 0x28, 0x08, 0xD1, 0x10, 0x78, 0x00, 0x28,
- 0xF8, 0xD0, 0x08, 0x88
- }
- },
- fl_repl[2][24] =
- {
- {
- 0xE0, 0x20, 0x00, 0x05, 0x01, 0x88, 0x01, 0x22, 0x08, 0x1C,
- 0x10, 0x40, 0x02, 0x1C, 0x11, 0x04, 0x08, 0x0C, 0x00, 0x28,
- 0x01, 0xD0, 0x1B, 0xE0
- },
- {
- 0xE0, 0x21, 0x09, 0x05, 0x01, 0x23, 0x0C, 0x4A, 0x08, 0x88,
- 0x18, 0x40, 0x00, 0x28, 0x08, 0xD1, 0x10, 0x78, 0x00, 0x28,
- 0xF8, 0xD0, 0x08, 0x88
- }
- },
- p_repl[2][188] =
- {
- {
- 0x39, 0x68, 0x27, 0x48, 0x81, 0x42, 0x23, 0xD0, 0x89, 0x1C,
- 0x08, 0x88, 0x01, 0x28, 0x02, 0xD1, 0x24, 0x48, 0x78, 0x60,
- 0x33, 0xE0, 0x00, 0x23, 0x00, 0x22, 0x89, 0x1C, 0x10, 0xB4,
- 0x01, 0x24, 0x08, 0x68, 0x20, 0x40, 0x5B, 0x00, 0x03, 0x43,
- 0x89, 0x1C, 0x52, 0x1C, 0x06, 0x2A, 0xF7, 0xD1, 0x10, 0xBC,
- 0x39, 0x60, 0xDB, 0x01, 0x02, 0x20, 0x00, 0x02, 0x1B, 0x18,
- 0x0E, 0x20, 0x00, 0x06, 0x1B, 0x18, 0x7B, 0x60, 0x39, 0x1C,
- 0x08, 0x31, 0x08, 0x88, 0x09, 0x38, 0x08, 0x80, 0x16, 0xE0,
- 0x15, 0x49, 0x00, 0x23, 0x00, 0x22, 0x10, 0xB4, 0x01, 0x24,
- 0x08, 0x68, 0x20, 0x40, 0x5B, 0x00, 0x03, 0x43, 0x89, 0x1C,
- 0x52, 0x1C, 0x06, 0x2A, 0xF7, 0xD1, 0x10, 0xBC, 0xDB, 0x01,
- 0x02, 0x20, 0x00, 0x02, 0x1B, 0x18, 0x0E, 0x20, 0x00, 0x06,
- 0x1B, 0x18, 0x08, 0x3B, 0x3B, 0x60, 0x0B, 0x48, 0x39, 0x68,
- 0x01, 0x60, 0x0A, 0x48, 0x79, 0x68, 0x01, 0x60, 0x0A, 0x48,
- 0x39, 0x1C, 0x08, 0x31, 0x0A, 0x88, 0x80, 0x21, 0x09, 0x06,
- 0x0A, 0x43, 0x02, 0x60, 0x07, 0x48, 0x00, 0x47, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x0E, 0x04, 0x00,
- 0x00, 0x0E, 0xD4, 0x00, 0x00, 0x04, 0xD8, 0x00, 0x00, 0x04,
- 0xDC, 0x00, 0x00, 0x04, 0xFF, 0xFF, 0xFF, 0x08
- },
- {
- 0x22, 0x4C, 0x84, 0x42, 0x20, 0xD0, 0x80, 0x1C, 0x04, 0x88,
- 0x01, 0x25, 0x2C, 0x40, 0x01, 0x2C, 0x02, 0xD1, 0x80, 0x1E,
- 0x1E, 0x49, 0x2E, 0xE0, 0x00, 0x23, 0x00, 0x24, 0x80, 0x1C,
- 0x40, 0xB4, 0x01, 0x26, 0x05, 0x68, 0x35, 0x40, 0x5B, 0x00,
- 0x2B, 0x43, 0x80, 0x1C, 0x64, 0x1C, 0x06, 0x2C, 0xF7, 0xD1,
- 0x40, 0xBC, 0xDB, 0x01, 0x02, 0x24, 0x24, 0x02, 0x1B, 0x19,
- 0x0E, 0x24, 0x24, 0x06, 0x1B, 0x19, 0x19, 0x1C, 0x09, 0x3A,
- 0x16, 0xE0, 0x12, 0x48, 0x00, 0x23, 0x00, 0x24, 0x40, 0xB4,
- 0x01, 0x26, 0x05, 0x68, 0x35, 0x40, 0x5B, 0x00, 0x2B, 0x43,
- 0x80, 0x1C, 0x64, 0x1C, 0x06, 0x2C, 0xF7, 0xD1, 0x40, 0xBC,
- 0xDB, 0x01, 0x02, 0x24, 0x24, 0x02, 0x1B, 0x19, 0x0E, 0x24,
- 0x24, 0x06, 0x1B, 0x19, 0x08, 0x3B, 0x18, 0x1C, 0x08, 0x4C,
- 0x20, 0x60, 0x08, 0x4C, 0x21, 0x60, 0x08, 0x49, 0x80, 0x20,
- 0x00, 0x06, 0x02, 0x43, 0x0A, 0x60, 0x06, 0x4C, 0x20, 0x47,
- 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x0E, 0x04, 0x00,
- 0x00, 0x0E, 0xD4, 0x00, 0x00, 0x04, 0xD8, 0x00, 0x00, 0x04,
- 0xDC, 0x00, 0x00, 0x04, 0xFF, 0xFF, 0xFF, 0x08
- }
- },
- major, minor, micro, *buffer, *bufferptr, *ptr, value;
- char dest_name[FILENAME_MAX];
- int p_size[2] = { 188, 168 }, p_off, st_off;
- unsigned int fsize = ucon64.file_size;
- FILE *destfile;
- strcpy (dest_name, ucon64.rom);
- ucon64_file_handler (dest_name, NULL, 0);
- fcopy (ucon64.rom, 0, ucon64.file_size, dest_name, "wb");
- if ((destfile = fopen (dest_name, "rb+")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_WRITE_ERROR], dest_name);
- return -1;
- }
- if (!(buffer = (unsigned char *) malloc (fsize)))
- {
- fprintf (stderr, ucon64_msg[ROM_BUFFER_ERROR], fsize);
- fclose (destfile);
- exit (1);
- }
- if (fread (buffer, 1, fsize, destfile) != fsize)
- {
- fprintf (stderr, ucon64_msg[READ_ERROR], dest_name);
- free (buffer);
- fclose (destfile);
- return -1;
- }
- bufferptr = buffer + 160 + 12 + 4;
- ptr = (unsigned char *) memmem2 (bufferptr, fsize, "EEPROM_", 7, 0);
- if (ptr == 0)
- {
- printf ("This ROM does not appear to use EEPROM saving\n");
- free (buffer);
- fclose (destfile);
- return -1;
- }
- major = ptr[8] - '0';
- minor = ptr[9] - '0';
- micro = ptr[10] - '0';
- if (ucon64.quiet < 0)
- printf ("version: %d.%d.%d; offset: 0x%08x\n",
- major, minor, micro, (int) (ptr - buffer));
- if (minor > 2)
- {
- fputs ("ERROR: ROMs with an EEPROM minor version higher than 2 are not supported\n", stderr);
- free (buffer);
- fclose (destfile);
- return -1;
- }
- ptr = (unsigned char *) memmem2 (bufferptr, fsize,
- fl_orig[minor - 1], sizeof (fl_orig[minor - 1]), 0);
- if (ptr == 0)
- {
- fputs ("ERROR: Could not find fl pattern. Perhaps this file is already patched?\n", stderr);
- free (buffer);
- fclose (destfile);
- return -1;
- }
- if (ucon64.quiet < 0)
- printf ("fl offset: 0x%08x\n", (int) (ptr - buffer));
- fseek (destfile, ptr - buffer, SEEK_SET);
- fwrite (fl_repl[minor - 1], 1, sizeof (fl_repl[minor - 1]), destfile);
- ptr = buffer + fsize - 1;
- value = *ptr;
- do
- ptr--;
- while (*ptr == value && ptr - buffer > 0);
- p_off = (ptr - buffer + 0xff) & ~0xff; // align at 256 byte boundary
- if (ucon64.quiet < 0)
- printf ("p_off: 0x%08x\n", p_off);
- // if the SRAM function won't fit at the end of the ROM, abort
- if ((minor == 1 && (int) (fsize - 188) < p_off) ||
- (minor == 2 && (int) (fsize - 168) < p_off))
- {
- fputs ("ERROR: Not enough room for SRAM function at end of ROM\n", stderr);
- free (buffer);
- fclose (destfile);
- return -1;
- }
- ptr = (unsigned char *) memmem2 (bufferptr, fsize,
- st_orig[minor - 1], sizeof (st_orig[minor - 1]), 0);
- if (ptr == 0)
- {
- fputs ("ERROR: Could not find st pattern\n", stderr);
- free (buffer);
- fclose (destfile);
- return -1;
- }
- st_off = ptr - buffer;
- if (ucon64.quiet < 0)
- printf ("st offset: 0x%08x\n", st_off);
- bufferptr = buffer + p_off;
- switch (minor)
- {
- case 1:
- // these are the offsets to the caller function, it handles all saving and
- // is at st_off
- p_repl[minor - 1][184] = (unsigned char) (st_off + 0x21);
- p_repl[minor - 1][186] = (unsigned char) (st_off >> 16);
- if (*(bufferptr - 1) == 0xff)
- p_repl[minor - 1][185] = (unsigned char) (st_off >> 8);
- else
- {
- st_off += 0x1f;
- p_repl[minor - 1][185] = (unsigned char) (st_off >> 8);
- }
- // tell the calling function where the SRAM function is (p_off)
- st_repl[minor - 1][5] = (unsigned char) (p_off >> 8);
- st_repl[minor - 1][6] = (unsigned char) (p_off >> 16);
- break;
- case 2:
- // offsets to the caller function
- p_repl[minor - 1][164] = (unsigned char) (st_off + 0x13);
- p_repl[minor - 1][165] = (unsigned char) (st_off >> 8);
- p_repl[minor - 1][166] = (unsigned char) (st_off >> 16);
- // tell the calling function where the SRAM function is
- st_repl[minor - 1][7] = (unsigned char) (p_off >> 8);
- st_repl[minor - 1][8] = (unsigned char) (p_off >> 16);
- break;
- }
- fseek (destfile, st_off, SEEK_SET);
- fwrite (st_repl[minor - 1], 1, sizeof (st_repl[minor - 1]), destfile);
- fseek (destfile, p_off, SEEK_SET);
- fwrite (p_repl[minor - 1], 1, p_size[minor - 1], destfile);
- free (buffer);
- fclose (destfile);
- puts ("SRAM patch applied");
- printf (ucon64_msg[WROTE], dest_name);
- return 0;
- }
- int
- gba_crp (st_rominfo_t *rominfo, const char *value)
- {
- FILE *srcfile, *destfile;
- int bytesread, n = 0;
- char buffer[32 * 1024], src_name[FILENAME_MAX], dest_name[FILENAME_MAX],
- replace[2], wait_time = atoi (value);
- if (wait_time % 4 != 0 || wait_time > 28 || wait_time < 0)
- {
- fprintf (stderr, "ERROR: You specified an incorrect WAIT_TIME value\n");
- return -1;
- }
- puts ("Applying crash patch...");
- strcpy (src_name, ucon64.rom);
- strcpy (dest_name, ucon64.rom);
- ucon64_file_handler (dest_name, src_name, 0);
- if ((srcfile = fopen (src_name, "rb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_READ_ERROR], src_name);
- return -1;
- }
- if ((destfile = fopen (dest_name, "wb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_WRITE_ERROR], dest_name);
- return -1;
- }
- if (rominfo->buheader_len) // copy header (if present)
- {
- fread (buffer, 1, rominfo->buheader_len, srcfile);
- fwrite (buffer, 1, rominfo->buheader_len, destfile);
- }
- replace[0] = wait_time;
- replace[1] = 0x40;
- while ((bytesread = fread (buffer, 1, 32 * 1024, srcfile)))
- { // '!' == ASCII 33 (\x21), '*' == 42 (\x2a)
- n += change_mem (buffer, bytesread, "\x04\x02\x00\x04\x14\x40", 6, '*', '!', replace, 1, -1);
- n += change_mem (buffer, bytesread, "\x02\x00\x04\x14\x40\x00", 6, '*', '!', replace, 1, -2);
- n += change_mem (buffer, bytesread, "\x04\x02\x00\x04\xB4\x45", 6, '*', '!', replace, 2, -1);
- n += change_mem (buffer, bytesread, "\x3E\xE0\x00\x00\xB4\x45", 6, '*', '!', replace, 2, -1);
- n += change_mem (buffer, bytesread, "\x04\x02\x00\x04\x94\x44", 6, '*', '!', replace, 2, -1);
- fwrite (buffer, 1, bytesread, destfile);
- }
- fclose (srcfile);
- fclose (destfile);
- printf ("Found %d pattern%s\n", n, n != 1 ? "s" : "");
- printf (ucon64_msg[WROTE], dest_name);
- remove_temp_file ();
- return 0;
- }
- int
- gba_init (st_rominfo_t *rominfo)
- {
- int result = -1, value;
- char buf[MAXBUFSIZE];
- rominfo->buheader_len = UCON64_ISSET (ucon64.buheader_len) ?
- ucon64.buheader_len : 0;
- ucon64_fread (&gba_header, GBA_HEADER_START +
- rominfo->buheader_len, GBA_HEADER_LEN, ucon64.rom);
- if (/*gba_header.game_id_prefix == 'A' && */ // 'B' in Mario vs. Donkey Kong
- gba_header.start[3] == 0xea && gba_header.pad1 == 0x96 && gba_header.gba_type == 0)
- result = 0;
- else
- {
- #if 0 // AFAIK (dbjh) GBA ROMs never have a header
- rominfo->buheader_len = UCON64_ISSET (ucon64.buheader_len) ?
- ucon64.buheader_len : UNKNOWN_HEADER_LEN;
- ucon64_fread (&gba_header, GBA_HEADER_START +
- rominfo->buheader_len, GBA_HEADER_LEN, ucon64.rom);
- if (gba_header.game_id_prefix == 'A' && gba_header.gba_type == 0)
- result = 0;
- else
- #endif
- result = -1;
- }
- if (ucon64.console == UCON64_GBA)
- result = 0;
- rominfo->header_start = GBA_HEADER_START;
- rominfo->header_len = GBA_HEADER_LEN;
- rominfo->header = &gba_header;
- // internal ROM name
- strncpy (rominfo->name, (const char *) gba_header.name, GBA_NAME_LEN);
- rominfo->name[GBA_NAME_LEN] = 0;
- // ROM maker
- {
- int ih = gba_header.maker_high <= '9' ?
- gba_header.maker_high - '0' : gba_header.maker_high - 'A' + 10,
- il = gba_header.maker_low <= '9' ?
- gba_header.maker_low - '0' : gba_header.maker_low - 'A' + 10;
- value = ih * 36 + il;
- }
- if (value < 0 || value >= NINTENDO_MAKER_LEN)
- value = 0;
- rominfo->maker = NULL_TO_UNKNOWN_S (nintendo_maker[value]);
- // ROM country
- rominfo->country =
- (gba_header.game_id_country == 'J') ? "Japan/Asia" :
- (gba_header.game_id_country == 'E') ? "U.S.A." :
- (gba_header.game_id_country == 'P') ? "Europe, Australia and Africa" :
- "Unknown country";
- // misc stuff
- sprintf (buf, "Version: %d\n", gba_header.version);
- strcat (rominfo->misc, buf);
- sprintf (buf, "Device type: 0x%02x\n", gba_header.device_type);
- strcat (rominfo->misc, buf);
- /*
- start address = current address + (parameter of B instruction * 4) + 8
- gba_header.start[3] is opcode of B instruction (0xea)
- */
- value = 0x8000008 +
- (gba_header.start[2] << 18 | gba_header.start[1] << 10 | gba_header.start[0] << 2);
- sprintf (buf, "Start address: 0x%08x\n", value);
- strcat (rominfo->misc, buf);
- strcat (rominfo->misc, "Logo data: ");
- if (memcmp (gba_header.logo, gba_logodata, GBA_LOGODATA_LEN) == 0)
- {
- #ifdef USE_ANSI_COLOR
- if (ucon64.ansi_color)
- strcat (rominfo->misc, "\x1b[01;32mOk\x1b[0m");
- else
- #endif
- strcat (rominfo->misc, "Ok");
- }
- else
- {
- #ifdef USE_ANSI_COLOR
- if (ucon64.ansi_color)
- strcat (rominfo->misc, "\x1b[01;31mBad\x1b[0m");
- else
- #endif
- strcat (rominfo->misc, "Bad");
- }
- // internal ROM crc
- if (!UCON64_ISSET (ucon64.do_not_calc_crc) && result == 0)
- {
- rominfo->has_internal_crc = 1;
- rominfo->internal_crc_len = 1;
- rominfo->current_internal_crc = gba_chksum ();
- rominfo->internal_crc = gba_header.checksum;
- rominfo->internal_crc2[0] = 0;
- }
- rominfo->console_usage = gba_usage[0].help;
- // We use fal_usage, but we could just as well use f2a_usage
- rominfo->copier_usage = (!rominfo->buheader_len ? fal_usage[0].help : unknown_usage[0].help);
- return result;
- }
- int
- gba_chksum (void)
- // Note that this function only calculates the checksum of the internal header
- {
- unsigned char sum = 0x19, *ptr = (unsigned char *) &gba_header + 0xa0;
- while (ptr < (unsigned char *) &gba_header + 0xbd)
- sum += *ptr++;
- sum = -sum;
- return sum;
- }
- int
- gba_multi (int truncate_size, char *multi_fname)
- // TODO: Check if 1024 Mbit multi-game files are supported by the FAL code
- {
- #define BUFSIZE (32 * 1024)
- int n, n_files, file_no, bytestowrite, byteswritten, totalsize = 0, done,
- truncated = 0, size_pow2_lesser = 1, size_pow2 = 1, truncate_size_ispow2 = 0;
- struct stat fstate;
- FILE *srcfile, *destfile;
- char buffer[BUFSIZE], fname[FILENAME_MAX], *fname_ptr;
- if (truncate_size == 0)
- {
- fprintf (stderr, "ERROR: Can't make multi-game file of 0 bytes\n");
- return -1;
- }
- #if 0
- if (truncate_size != 64 * MBIT && truncate_size != 128 * MBIT &&
- truncate_size != 256 * MBIT && truncate_size != 512 * MBIT &&
- truncate_size != 1024 * MBIT)
- {
- fprintf (stderr, "ERROR: Truncate size must be 64, 128, 256, 512 or 1024\n");
- return -1;
- }
- #endif
- if (multi_fname != NULL) // -xfalmulti
- {
- strcpy (fname, multi_fname);
- n_files = ucon64.argc;
- }
- else // -multi
- {
- strcpy (fname, ucon64.argv[ucon64.argc - 1]);
- n_files = ucon64.argc - 1;
- }
- ucon64_file_handler (fname, NULL, OF_FORCE_BASENAME);
- if ((destfile = fopen (fname, "wb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_WRITE_ERROR], fname);
- return -1;
- }
- printf ("Creating multi-game file for FAL(/F2A): %s\n", fname);
- file_no = 0;
- for (n = 1; n < n_files; n++)
- {
- if (access (ucon64.argv[n], F_OK))
- continue; // "file" does not exist (option)
- stat (ucon64.argv[n], &fstate);
- if (!S_ISREG (fstate.st_mode))
- continue;
- if (file_no == 0)
- {
- if (multi_fname != NULL) // -xfalmulti
- {
- get_property_fname (ucon64.configfile, "gbaloader", fname, "loader.bin");
- if (access (fname, F_OK))
- {
- fprintf (stderr, "ERROR: Cannot open loader binary (%s)\n", fname);
- return -1;
- }
- fname_ptr = fname;
- // NOTE: loop counter is modified, because we have to insert
- // loader in the file list
- n--;
- }
- else // -multi
- fname_ptr = ucon64.argv[n];
- printf ("Loader: %s\n", fname_ptr);
- if (fsizeof (fname_ptr) > 64 * 1024)
- printf ("WARNING: Are you sure %s is a loader binary?\n", fname_ptr);
- }
- else
- {
- fname_ptr = ucon64.argv[n];
- printf ("ROM%d: %s\n", file_no, fname_ptr);
- }
- if ((srcfile = fopen (fname_ptr, "rb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_READ_ERROR], fname_ptr);
- continue;
- }
- done = 0;
- byteswritten = 0; // # of bytes written per file
- while (!done)
- {
- bytestowrite = fread (buffer, 1, BUFSIZE, srcfile);
- if (totalsize + bytestowrite > truncate_size)
- {
- bytestowrite = truncate_size - totalsize;
- done = 1;
- truncated = 1;
- printf ("Output file is %d Mbit, truncating %s, skipping %d bytes\n",
- truncate_size / MBIT, fname_ptr,
- fsizeof (fname_ptr) - (byteswritten + bytestowrite));
- // DON'T use fstate.st_size, because file could be compressed
- }
- totalsize += bytestowrite;
- if (bytestowrite == 0)
- done = 1;
- fwrite (buffer, 1, bytestowrite, destfile);
- byteswritten += bytestowrite;
- }
- fclose (srcfile);
- if (truncated)
- break;
- file_no++;
- }
- fclose (destfile);
- /*
- Display a notification if a truncate size was specified that is not exactly
- the size of one of the flash card sizes.
- */
- n = truncate_size;
- while (n >>= 1)
- size_pow2 <<= 1;
- if (truncate_size == size_pow2)
- truncate_size_ispow2 = 1;
- n = totalsize - 1;
- while (n >>= 1)
- size_pow2_lesser <<= 1;
- size_pow2 = size_pow2_lesser << 1;
- if (totalsize > 64 * MBIT && !truncate_size_ispow2)
- printf("\n"
- "NOTE: This multi-game file can only be written to a card >= %d Mbit.\n"
- " Use -multi=%d to create a file truncated to %d Mbit.\n"
- " Current size is %.5f Mbit\n", // 5 digits to have 1 byte resolution
- size_pow2 / MBIT, size_pow2_lesser / MBIT, size_pow2_lesser / MBIT,
- totalsize / (float) MBIT);
- return 0;
- }
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