mirror of
https://github.com/ApacheThunder/NTR_Launcher.git
synced 2025-06-19 19:45:38 -04:00
24d84286e6
* Overhaul using improved bootloader from NitrohaxTWL. * Alternate bootloader removed as it appears uneeded. * Improved debug output using text instead of colored boxes from NitroHax's original bootloader design. Debug mode will now show enhanced status readouts of cart load process. Text displayed in red if an error occurs (visible even when debug mode is off if error occured)
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*
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NitroHax -- Cheat tool for the Nintendo DS
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Copyright (C) 2008 Michael "Chishm" Chisholm
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <nds.h>
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#include "load_bin.h"
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#include "launch_engine.h"
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#include "debugConsole.h"
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#define LCDC_BANK_D (u16*)0x06860000
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#define TMP_DATA 0x027FC000
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typedef struct sLauncherSettings {
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u8 language;
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u8 scfgUnlock;
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u8 twlMode;
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u8 twlCLK;
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u8 twlVRAM;
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u8 debugMode;
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} tLauncherSettings;
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void vramcpy (void* dst, const void* src, int len) {
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u16* dst16 = (u16*)dst;
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u16* src16 = (u16*)src;
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for ( ; len > 0; len -= 2) { *dst16++ = *src16++; }
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}
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extern void InitConsole();
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extern bool ConsoleInit;
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void runLaunchEngine (int language, bool scfgUnlock, bool TWLMODE, bool TWLCLK, bool TWLVRAM, bool debugMode) {
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// Always init console so bootloader's new console can display error codes if needed.
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if (!debugMode || !ConsoleInit) { InitConsole(); } else { consoleClear(); }
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irqDisable(IRQ_ALL);
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// Direct CPU access to VRAM bank D
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VRAM_D_CR = VRAM_ENABLE | VRAM_D_LCD;
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// Clear VRAM
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memset (LCDC_BANK_D, 0x00, 128 * 1024);
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// Load the loader/patcher into the correct address
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vramcpy (LCDC_BANK_D, load_bin, load_bin_size);
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// Give the VRAM to the ARM7
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// nocashMessage("Give the VRAM to the ARM7");
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VRAM_D_CR = VRAM_ENABLE | VRAM_D_ARM7_0x06020000;
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// Reset into a passme loop
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nocashMessage("Reset into a passme loop");
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REG_EXMEMCNT |= ARM7_OWNS_ROM | ARM7_OWNS_CARD;
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REG_SCFG_EXT=0x83002000;
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// for (int i = 0; i < 10; i++) { swiWaitForVBlank(); }
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tLauncherSettings* tmpData = (tLauncherSettings*)TMP_DATA;
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tmpData->language = 0xFF;
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if (language != -1)tmpData->language = language;
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if (scfgUnlock)tmpData->scfgUnlock = 0x01;
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if (TWLMODE)tmpData->twlMode = 0x01;
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if (TWLCLK)tmpData->twlCLK = 0x01;
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if (TWLVRAM)tmpData->twlVRAM = 0x01;
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if (debugMode)tmpData->debugMode = 0x01;
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// Return to passme loop
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*(vu32*)0x027FFFFC = 0;
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*(vu32*)0x027FFE04 = (u32)0xE59FF018; // ldr pc, 0x02FFFE24
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*(vu32*)0x027FFE24 = (u32)0x02FFFE04; // Set ARM9 Loop address --> resetARM9(0x027FFE04);
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// Reset ARM7
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// nocashMessage("resetARM7");
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resetARM7(0x06020000);
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// swi soft reset
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// nocashMessage("swiSoftReset");
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swiSoftReset();
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}
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