mirror of
https://github.com/rvtr/GodMode9i.git
synced 2025-06-19 03:05:43 -04:00
325 lines
7.8 KiB
C++
325 lines
7.8 KiB
C++
#include <nds.h>
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#include <nds/arm9/dldi.h>
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#include <fat.h>
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#include <sys/stat.h>
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#include <sys/statvfs.h>
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#include <stdio.h>
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#include "main.h"
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#include "dldi-include.h"
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#include "lzss.h"
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#include "ramd.h"
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#include "ramdrive-include.h"
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#include "tonccpy.h"
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static sNDSHeader nds;
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u8 stored_SCFG_MC = 0;
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static bool slot1Enabled = true;
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bool sdMounted = false;
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bool sdMountedDone = false; // true if SD mount is successful once
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bool flashcardMounted = false;
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bool ramdrive1Mounted = false;
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bool ramdrive2Mounted = false;
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bool nitroMounted = false;
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int currentDrive = 0; // 0 == SD card, 1 == Flashcard, 2 == RAMdrive 1, 3 == RAMdrive 2
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int nitroCurrentDrive = 0;
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char sdLabel[12];
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char fatLabel[12];
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u64 sdSize = 0;
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u64 fatSize = 0;
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static int getGbNumber(u64 bytes) {
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int gbNumber = 0;
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for (u64 i = 0; i <= bytes; i += 0x40000000) {
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gbNumber++;
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}
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return gbNumber;
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}
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static int getTbNumber(u64 bytes) {
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int tbNumber = 0;
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for (u64 i = 0; i <= bytes; i += 0x10000000000) {
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tbNumber++;
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}
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return tbNumber;
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}
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void printDriveBytes(u64 bytes)
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{
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if (bytes == 1)
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iprintf("%d Byte", (int)bytes);
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else if (bytes >= 0 && bytes < 1024)
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iprintf("%d Bytes", (int)bytes);
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else if (bytes >= 1024 && bytes < (1024 * 1024))
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printf("%d KB", (int)bytes / 1024);
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else if (bytes >= (1024 * 1024) && bytes < (1024 * 1024 * 1024))
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printf("%d MB", (int)bytes / 1024 / 1024);
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else if (bytes >= 0x40000000 && bytes < 0x10000000000)
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printf("%d GB", getGbNumber(bytes));
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else
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printf("%d TB", getTbNumber(bytes));
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}
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const char* getDrivePath(void) {
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switch (currentDrive) {
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case 0:
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return "sd:/";
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case 1:
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return "fat:/";
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case 2:
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return "ram1:/";
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case 3:
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return "ram2:/";
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}
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return "";
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}
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void fixLabel(bool fat) {
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if (fat) {
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for (int i = 0; i < 12; i++) {
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if (((fatLabel[i] == ' ') && (fatLabel[i+1] == ' ') && (fatLabel[i+2] == ' '))
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|| ((fatLabel[i] == ' ') && (fatLabel[i+1] == ' '))
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|| (fatLabel[i] == ' ')) {
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fatLabel[i] = '\0';
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break;
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}
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}
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} else {
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for (int i = 0; i < 12; i++) {
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if (((sdLabel[i] == ' ') && (sdLabel[i+1] == ' ') && (sdLabel[i+2] == ' '))
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|| ((sdLabel[i] == ' ') && (sdLabel[i+1] == ' '))
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|| (sdLabel[i] == ' ')) {
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sdLabel[i] = '\0';
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break;
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}
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}
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}
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}
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bool sdFound(void) {
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if (access("sd:/", F_OK) == 0) {
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return true;
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} else {
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return false;
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}
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}
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bool flashcardFound(void) {
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if (access("fat:/", F_OK) == 0) {
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return true;
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} else {
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return false;
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}
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}
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bool bothSDandFlashcard(void) {
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if (sdMounted && flashcardMounted) {
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return true;
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} else {
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return false;
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}
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}
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TWL_CODE bool sdMount(void) {
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fatMountSimple("sd", get_io_dsisd());
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if (sdFound()) {
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sdMountedDone = true;
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fatGetVolumeLabel("sd", sdLabel);
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fixLabel(false);
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struct statvfs st;
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if (statvfs("sd:/", &st) == 0) {
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sdSize = st.f_bsize * st.f_blocks;
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}
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return true;
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}
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return false;
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}
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TWL_CODE void sdUnmount(void) {
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fatUnmount("sd");
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sdLabel[0] = '\0';
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sdSize = 0;
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sdMounted = false;
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}
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TWL_CODE DLDI_INTERFACE* dldiLoadFromBin (const u8 dldiAddr[]) {
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// Check that it is a valid DLDI
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if (!dldiIsValid ((DLDI_INTERFACE*)dldiAddr)) {
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return NULL;
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}
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DLDI_INTERFACE* device = (DLDI_INTERFACE*)dldiAddr;
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size_t dldiSize;
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// Calculate actual size of DLDI
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// Although the file may only go to the dldiEnd, the BSS section can extend past that
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if (device->dldiEnd > device->bssEnd) {
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dldiSize = (char*)device->dldiEnd - (char*)device->dldiStart;
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} else {
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dldiSize = (char*)device->bssEnd - (char*)device->dldiStart;
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}
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dldiSize = (dldiSize + 0x03) & ~0x03; // Round up to nearest integer multiple
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// Clear unused space
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toncset(device+dldiSize, 0, 0x4000-dldiSize);
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dldiFixDriverAddresses (device);
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if (device->ioInterface.features & FEATURE_SLOT_GBA) {
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sysSetCartOwner(BUS_OWNER_ARM9);
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}
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if (device->ioInterface.features & FEATURE_SLOT_NDS) {
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sysSetCardOwner(BUS_OWNER_ARM9);
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}
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return device;
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}
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TWL_CODE bool UpdateCardInfo(char* gameid, char* gamename) {
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cardReadHeader((uint8*)0x02000000);
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tonccpy(&nds, (void*)0x02000000, sizeof(sNDSHeader));
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tonccpy(gameid, &nds.gameCode, 4);
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gameid[4] = 0x00;
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tonccpy(gamename, &nds.gameTitle, 12);
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gamename[12] = 0x00;
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return true;
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}
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TWL_CODE void ShowGameInfo(const char gameid[], const char gamename[]) {
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iprintf("Game id: %s\nName: %s", gameid, gamename);
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}
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TWL_CODE bool twl_flashcardMount(void) {
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if (REG_SCFG_MC != 0x11) {
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sysSetCardOwner (BUS_OWNER_ARM9);
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// Reset Slot-1 to allow reading title name and ID
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if (slot1Enabled) {
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disableSlot1();
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for(int i = 0; i < 25; i++) { swiWaitForVBlank(); }
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slot1Enabled = false;
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}
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if (appInited) {
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for(int i = 0; i < 35; i++) { swiWaitForVBlank(); } // Make sure cart is inserted correctly
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}
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if (REG_SCFG_MC == 0x11) {
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sysSetCardOwner (BUS_OWNER_ARM7);
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return false;
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}
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if (!slot1Enabled) {
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enableSlot1();
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for(int i = 0; i < 15; i++) { swiWaitForVBlank(); }
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slot1Enabled = true;
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}
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nds.gameCode[0] = 0;
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nds.gameTitle[0] = 0;
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char gamename[13];
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char gameid[5];
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/*fifoSendValue32(FIFO_USER_04, 1);
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for (int i = 0; i < 10; i++) {
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swiWaitForVBlank();
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}
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tonccpy(&nds, (void*)0x02000000, sizeof(nds));*/
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UpdateCardInfo(&gameid[0], &gamename[0]);
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/*consoleClear();
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iprintf("REG_SCFG_MC: %x\n", REG_SCFG_MC);
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ShowGameInfo(gameid, gamename);
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for (int i = 0; i < 60*5; i++) {
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swiWaitForVBlank();
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}*/
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sysSetCardOwner (BUS_OWNER_ARM7); // 3DS fix
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if (gameid[0] >= 0x00 && gameid[0] < 0x20) {
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return false;
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}
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// Read a DLDI driver specific to the cart
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if (!memcmp(gameid, "ASMA", 4)) {
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io_dldi_data = dldiLoadFromBin(r4tf_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} else if (!memcmp(gamename, "TOP TF/SD DS", 12) || !memcmp(gameid, "A76E", 4)) {
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io_dldi_data = dldiLoadFromBin(tt_sd_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} else /*if (!memcmp(gamename, "PASS", 4) && !memcmp(gameid, "ASME", 4)) {
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io_dldi_data = dldiLoadFromBin(CycloEvo_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} else*/ if (!memcmp(gamename, "D!S!XTREME", 12) && !memcmp(gameid, "AYIE", 4)) {
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io_dldi_data = dldiLoadFromBin(dsx_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} else if (!memcmp(gamename, "QMATETRIAL", 9) || !memcmp(gamename, "R4DSULTRA", 9)) {
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io_dldi_data = dldiLoadFromBin(r4idsn_sd_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} else if (!memcmp(gameid, "ACEK", 4) || !memcmp(gameid, "YCEP", 4) || !memcmp(gameid, "AHZH", 4) || !memcmp(gameid, "CHPJ", 4)) {
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io_dldi_data = dldiLoadFromBin(ak2_sd_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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} /*else if (!memcmp(gameid, "ALXX", 4)) {
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io_dldi_data = dldiLoadFromBin(dstwo_dldi);
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fatMountSimple("fat", &io_dldi_data->ioInterface);
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}*/
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if (flashcardFound()) {
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fatGetVolumeLabel("fat", fatLabel);
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fixLabel(true);
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struct statvfs st;
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if (statvfs("fat:/", &st) == 0) {
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fatSize = st.f_bsize * st.f_blocks;
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}
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return true;
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}
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}
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return false;
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}
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bool flashcardMount(void) {
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if ((!isDSiMode()) || (arm7SCFGLocked && !sdMountedDone)) {
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fatInitDefault();
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if (flashcardFound()) {
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fatGetVolumeLabel("fat", fatLabel);
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fixLabel(true);
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struct statvfs st;
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if (statvfs("fat:/", &st) == 0) {
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fatSize = st.f_bsize * st.f_blocks;
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}
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return true;
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}
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return false;
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} else {
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return twl_flashcardMount();
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}
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}
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void flashcardUnmount(void) {
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fatUnmount("fat");
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fatLabel[0] = '\0';
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fatSize = 0;
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flashcardMounted = false;
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}
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TWL_CODE void ramdrive1Mount(void) {
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LZ77_Decompress((u8*)__9MB_lz77, (u8*)0x02500000);
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fatMountSimple("ram1", &io_ram_drive);
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ramdrive1Mounted = (access("ram1:/", F_OK) == 0);
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}
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TWL_CODE void ramdrive2Mount(void) {
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LZ77_Decompress((u8*)__16MB_lz77, (u8*)0x0D000000);
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fatMountSimple("ram2", &io_ram_drive2);
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ramdrive2Mounted = (access("ram2:/", F_OK) == 0);
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}
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