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Implement GBA ROM dumping

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This commit is contained in:
RocketRobz 2018-10-07 00:04:05 -06:00
parent 9c0415adb0
commit 3aa9c24992
2 changed files with 134 additions and 22 deletions
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154
arm9/source/driveMenu.cpp
View File

@ -21,6 +21,10 @@
------------------------------------------------------------------*/ ------------------------------------------------------------------*/
#include <nds.h> #include <nds.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <dirent.h>
#include "main.h" #include "main.h"
#include "date.h" #include "date.h"
@ -38,6 +42,73 @@ static bool flashcardMountRan = true;
static bool dmTextPrinted = false; static bool dmTextPrinted = false;
int dmCursorPosition = 0; int dmCursorPosition = 0;
static u8 gbaFixedValue = 0;
void gbaCartDump(void) {
int pressed = 0;
printf ("\x1b[0;27H");
printf (" "); // Clear time
consoleInit(NULL, 1, BgType_Text4bpp, BgSize_T_256x256, 15, 0, false, true);
printf("Dump GBA cart ROM to\n");
printf("\"fat:/gm9i/out\"?\n");
printf("(<A> yes, <B> no)");
while (true) {
// Power saving loop. Only poll the keys once per frame and sleep the CPU if there is nothing else to do
do {
scanKeys();
pressed = keysDownRepeat();
swiWaitForVBlank();
} while (!(pressed & KEY_A) && !(pressed & KEY_B));
if (pressed & KEY_A) {
consoleClear();
if (access("fat:/gm9i", F_OK) != 0) {
printf("Creating directory...");
mkdir("fat:/gm9i", 0777);
}
if (access("fat:/gm9i/out", F_OK) != 0) {
printf ("\x1b[0;0H");
printf("Creating directory...");
mkdir("fat:/gm9i/out", 0777);
}
char gbaHeaderGameTitle[13] = "/0";
char gbaHeaderGameCode[5] = "/0";
char gbaHeaderMakerCode[3] = "/0";
for (int i = 0; i < 12; i++) {
gbaHeaderGameTitle[i] = *(char*)(0x080000A0+i);
if (*(u8*)(0x080000A0+i) == 0) {
break;
}
}
for (int i = 0; i < 4; i++) {
gbaHeaderGameCode[i] = *(char*)(0x080000AC+i);
if (*(u8*)(0x080000AC+i) == 0) {
break;
}
}
for (int i = 0; i < 2; i++) {
gbaHeaderMakerCode[i] = *(char*)(0x080000B0+i);
}
char destPath[256];
snprintf(destPath, sizeof(destPath), "fat:/gm9i/out/%s_%s_%s.gba", gbaHeaderGameTitle, gbaHeaderGameCode, gbaHeaderMakerCode);
consoleClear();
printf("Dumping...\n");
printf("This may take a while.\n");
printf("\n");
printf("Do not remove the GBA cart.\n");
remove(destPath);
FILE* destinationFile = fopen(destPath, "wb");
fwrite((void*)0x08000000, 1, 0x400000, destinationFile);
fclose(destinationFile);
break;
}
if (pressed & KEY_B) {
break;
}
}
}
void driveMenu (void) { void driveMenu (void) {
int pressed = 0; int pressed = 0;
int held = 0; int held = 0;
@ -54,14 +125,26 @@ void driveMenu (void) {
flashcardMountRan = false; flashcardMountRan = false;
} }
gbaFixedValue = *(u8*)(0x080000B2);
if (!dmTextPrinted) { if (!dmTextPrinted) {
consoleInit(NULL, 1, BgType_Text4bpp, BgSize_T_256x256, 15, 0, false, true); consoleInit(NULL, 1, BgType_Text4bpp, BgSize_T_256x256, 15, 0, false, true);
if (dmCursorPosition == 0 && isDSiMode()) { if (isDSiMode()) {
printf ("[sd:] SDCARD\n"); if (dmCursorPosition == 0) {
printf ("(SD FAT)"); printf ("[sd:] SDCARD\n");
printf ("(SD FAT)");
} else {
printf ("[fat:] GAMECART\n");
printf ("(Flashcart FAT)");
}
} else { } else {
printf ("[fat:] GAMECART\n"); if (dmCursorPosition == 0) {
printf ("(Flashcart FAT)"); printf ("[fat:] GAMECART\n");
printf ("(Flashcart FAT)");
} else if (!isDSiMode() && isRegularDS) {
printf ("GBA GAMECART\n");
printf ("(GBA Game)");
}
} }
iprintf ("\x1b[%i;0H", 22-isDSiMode()); iprintf ("\x1b[%i;0H", 22-isDSiMode());
printf (titleName); printf (titleName);
@ -102,6 +185,14 @@ void driveMenu (void) {
iprintf ("\x1b[%i;29H", 2+isDSiMode()); iprintf ("\x1b[%i;29H", 2+isDSiMode());
printf ("[x]"); printf ("[x]");
} }
if (!isDSiMode() && isRegularDS) {
printf ("\x1b[3;1H");
printf ("GBA GAMECART");
if (gbaFixedValue != 0x96) {
printf ("\x1b[3;29H");
printf ("[x]");
}
}
dmTextPrinted = true; dmTextPrinted = true;
} }
@ -120,38 +211,57 @@ void driveMenu (void) {
held = keysHeld(); held = keysHeld();
swiWaitForVBlank(); swiWaitForVBlank();
if (REG_SCFG_MC != stored_SCFG_MC) { if ((REG_SCFG_MC != stored_SCFG_MC)
|| (*(u8*)(0x080000B2) != gbaFixedValue)) {
dmTextPrinted = false; dmTextPrinted = false;
break; break;
} }
} while (!(pressed & KEY_UP) && !(pressed & KEY_DOWN) && !(pressed & KEY_A) && !(held & KEY_R)); } while (!(pressed & KEY_UP) && !(pressed & KEY_DOWN) && !(pressed & KEY_A) && !(held & KEY_R));
if ((pressed & KEY_UP) && isDSiMode()) { if (pressed & KEY_UP) {
dmCursorPosition -= 1; if (isDSiMode() || isRegularDS) {
dmTextPrinted = false; dmCursorPosition -= 1;
dmTextPrinted = false;
}
} }
if ((pressed & KEY_DOWN) && isDSiMode()) { if (pressed & KEY_DOWN) {
dmCursorPosition += 1; if (isDSiMode() || isRegularDS) {
dmTextPrinted = false; dmCursorPosition += 1;
dmTextPrinted = false;
}
} }
if (dmCursorPosition < 0) dmCursorPosition = 1; // Wrap around to bottom of list if (dmCursorPosition < 0) dmCursorPosition = 1; // Wrap around to bottom of list
if (dmCursorPosition > 1) dmCursorPosition = 0; // Wrap around to top of list if (dmCursorPosition > 1) dmCursorPosition = 0; // Wrap around to top of list
if (pressed & KEY_A) { if (pressed & KEY_A) {
if (dmCursorPosition == 0 && isDSiMode()) { if (dmCursorPosition == 0) {
if (sdMounted) { if (isDSiMode()) {
dmTextPrinted = false; if (sdMounted) {
chdir("sd:/"); dmTextPrinted = false;
screenMode = 1; chdir("sd:/");
break; screenMode = 1;
break;
}
} else {
if (flashcardMounted) {
dmTextPrinted = false;
chdir("fat:/");
screenMode = 1;
break;
}
} }
} else { } else {
if (flashcardMounted) { if (isDSiMode()) {
if (flashcardMounted) {
dmTextPrinted = false;
chdir("fat:/");
screenMode = 1;
break;
}
} else if (isRegularDS && flashcardMounted && gbaFixedValue == 0x96) {
dmTextPrinted = false; dmTextPrinted = false;
chdir("fat:/"); gbaCartDump();
screenMode = 1;
break;
} }
} }
} }

2
arm9/source/main.cpp
View File

@ -122,6 +122,8 @@ int main(int argc, char **argv) {
printf ("\x1b[22;11H"); printf ("\x1b[22;11H");
printf ("mounting drive(s)..."); printf ("mounting drive(s)...");
sysSetCartOwner (BUS_OWNER_ARM9); // Allow arm9 to access GBA ROM
if (isDSiMode()) { if (isDSiMode()) {
sdMounted = sdMount(); sdMounted = sdMount();
} }