mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-04 18:45:05 +01:00
b753af6d4d
added functions to mess with the "return to" stub. everything should be working right, but if i messed up, it may cause you not to be able to exit the program (it could just keep restarting itself). now when booting homebrew, they should exit back to this program if you have a channel installed as UNEO or ULNR. priority is given to UNEO if both are present.
399 lines
9.2 KiB
C
399 lines
9.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ogcsys.h>
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#include <ogc/lwp_watchdog.h>
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#include <wiiuse/wpad.h>
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#include "patches/fst.h"
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#include "apploader.h"
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#include "disc.h"
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#include "video.h"
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#include "wdvd.h"
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#include "alternatedol.h"
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#include "memory.h"
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#include "../gecko.h"
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/* Constants */
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#define PTABLE_OFFSET 0x40000
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#define WII_MAGIC 0x5D1C9EA3
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/* Disc pointers */
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static u32 *buffer = (u32 *)0x93000000;
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static u8 *diskid = (u8 *)Disc_ID;
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void __Disc_SetLowMem(void) {
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*Sys_Magic = 0x0D15EA5E; // Standard Boot Code
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*Version = 0x00000001; // Version
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*Arena_L = 0x00000000; // Arena Low
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*BI2 = 0x817E5480; // BI2
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*Bus_Speed = 0x0E7BE2C0; // Console Bus Speed
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*CPU_Speed = 0x2B73A840; // Console CPU Speed
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/* Setup low memory */
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*Assembler = 0x38A00040; // Assembler
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*(u32 *)0x800000E4 = 0x80431A80;
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*Dev_Debugger = 0x81800000; // Dev Debugger Monitor Address
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*Simulated_Mem = 0x01800000; // Simulated Memory Size
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//If the game is sam & max: season 1 put this shit in
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char gameid[8];
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memset(gameid, 0, 8);
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memcpy(gameid, (char*)Disc_ID, 6);
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if ((strcmp(gameid,"R3XE6U")==0) || (strcmp(gameid,"R3XP6V")==0))
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{
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*GameID_Address = 0x80000000; // Game ID Address
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}
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/* Copy disc ID */
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memcpy((void *)Online_Check, (void *)Disc_ID, 4);
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/* Flush cache */
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DCFlushRange((void *)Disc_ID, 0x3F00);
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}
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void __Disc_SetVMode(u8 videoselected) {
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GXRModeObj *vmode = NULL;
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u32 progressive, tvmode, vmode_reg = 0;
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/* Get video mode configuration */
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progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
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tvmode = CONF_GetVideo();
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/* Select video mode register */
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switch (tvmode) {
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case CONF_VIDEO_PAL:
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vmode_reg = (CONF_GetEuRGB60() > 0) ? 5 : 1;
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break;
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case CONF_VIDEO_MPAL:
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vmode_reg = 4;
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break;
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case CONF_VIDEO_NTSC:
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vmode_reg = 0;
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break;
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}
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switch (videoselected) {
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case 0:
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/* Select video mode */
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switch (diskid[3]) {
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/* PAL */
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case 'P':
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case 'D':
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case 'F':
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case 'I':
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case 'S':
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case 'H':
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case 'X':
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case 'Y':
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case 'Z':
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if (tvmode != CONF_VIDEO_PAL) {
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vmode_reg = 5;
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vmode = (progressive) ? &TVNtsc480Prog : &TVEurgb60Hz480IntDf;
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}
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break;
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/* NTSC or unknown */
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case 'E':
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case 'J':
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case 'K':
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case 'W':
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if (tvmode != CONF_VIDEO_NTSC) {
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vmode_reg = 0;
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vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
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}
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break;
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}
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break;
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case 1:
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vmode = &TVPal528IntDf;
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vmode_reg = (vmode->viTVMode) >> 2;
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break;
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case 2:
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progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
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vmode = (progressive) ? &TVNtsc480Prog : &TVEurgb60Hz480IntDf;
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vmode_reg = (vmode->viTVMode) >> 2;
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break;
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case 3:
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progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
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vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
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vmode_reg = (vmode->viTVMode) >> 2;
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break;
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case 4:
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// vmode = VIDEO_GetPreferredMode(NULL);
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break;
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}
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/* Set video mode register */
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*Video_Mode = vmode_reg;
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/* Set video mode */
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if (vmode) {
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VIDEO_Configure(vmode);
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/* Setup video */
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VIDEO_SetBlack(FALSE);
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VIDEO_Flush();
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VIDEO_WaitVSync();
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if (vmode->viTVMode & VI_NON_INTERLACE)
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VIDEO_WaitVSync();
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}
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gprintf("\nVideo mode - %s",((progressive)?"progressive":"interlaced"));
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}
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void __Disc_SetTime(void) {
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/* Extern */
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extern void settime(u64);
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/* Set proper time */
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settime(secs_to_ticks(time(NULL) - 946684800));
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}
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s32 __Disc_FindPartition(u64 *outbuf) {
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u64 offset = 0, table_offset = 0;
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u32 cnt, nb_partitions;
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s32 ret;
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/* Read partition info */
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ret = WDVD_UnencryptedRead(buffer, 0x20, PTABLE_OFFSET);
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if (ret < 0)
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return ret;
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/* Get data */
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nb_partitions = buffer[0];
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table_offset = buffer[1] << 2;
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/* Read partition table */
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ret = WDVD_UnencryptedRead(buffer, 0x20, table_offset);
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if (ret < 0)
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return ret;
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/* Find game partition */
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for (cnt = 0; cnt < nb_partitions; cnt++) {
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u32 type = buffer[cnt * 2 + 1];
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/* Game partition */
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if (!type)
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offset = buffer[cnt * 2] << 2;
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}
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/* No game partition found */
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if (!offset)
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return -1;
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/* Set output buffer */
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*outbuf = offset;
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return 0;
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}
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s32 Disc_Init(void) {
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/* Init DVD subsystem */
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return WDVD_Init();
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}
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s32 Disc_Open(void) {
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s32 ret;
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/* Reset drive */
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ret = WDVD_Reset();
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if (ret < 0)
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return ret;
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/* Read disc ID */
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return WDVD_ReadDiskId(diskid);
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}
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s32 Disc_Wait(void) {
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u32 cover = 0;
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s32 ret;
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/* Wait for disc */
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while (!(cover & 0x2)) {
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/* Get cover status */
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ret = WDVD_GetCoverStatus(&cover);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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s32 Disc_SetUSB(u8 *id) {
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/* Set USB mode */
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return WDVD_SetUSBMode(id);
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}
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s32 Disc_ReadHeader(void *outbuf) {
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/* Read disc header */
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return WDVD_UnencryptedRead(outbuf, sizeof(struct discHdr), 0);
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}
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s32 Disc_IsWii(void) {
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struct discHdr *header = (struct discHdr *)buffer;
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s32 ret;
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/* Read disc header */
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ret = Disc_ReadHeader(header);
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if (ret < 0)
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return ret;
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/* Check magic word */
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if (header->magic != WII_MAGIC)
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return -1;
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return 0;
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}
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s32 Disc_BootPartition(u64 offset, u8 videoselected, u8 cheat, u8 vipatch, u8 patchcountrystring, u8 error002fix, u8 alternatedol, u32 alternatedoloffset) {
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entry_point p_entry;
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s32 ret;
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/* Open specified partition */
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ret = WDVD_OpenPartition(offset);
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if (ret < 0)
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return ret;
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/* Run apploader */
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ret = Apploader_Run(&p_entry, cheat, videoselected, vipatch, patchcountrystring, error002fix, alternatedol, alternatedoloffset);
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if (ret < 0)
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return ret;
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/* Setup low memory */
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__Disc_SetLowMem();
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/* Set an appropiate video mode */
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__Disc_SetVMode(videoselected);
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/* Set time */
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__Disc_SetTime();
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if (cheat == 1) {
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char gameid[8];
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/* OCARINA STUFF - FISHEARS*/
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memset(gameid, 0, 8);
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memcpy(gameid, (char*)Disc_ID, 6);
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do_sd_code(gameid);
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/* OCARINA STUFF - FISHEARS*/
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}
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/* Disconnect Wiimote */
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WPAD_Flush(0);
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WPAD_Disconnect(0);
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WPAD_Shutdown();
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/* Shutdown IOS subsystems */
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SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
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/* Jump to entry point */
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p_entry();
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return 0;
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}
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s32 Disc_WiiBoot(u8 videoselected, u8 cheat, u8 vipatch, u8 patchcountrystring, u8 error002fix, u8 alternatedol, u32 alternatedoloffset) {
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u64 offset;
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s32 ret;
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/* Find game partition offset */
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ret = __Disc_FindPartition(&offset);
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if (ret < 0)
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return ret;
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/* Boot partition */
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return Disc_BootPartition(offset, videoselected, cheat, vipatch, patchcountrystring, error002fix, alternatedol, alternatedoloffset);
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}
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void PatchCountryStrings(void *Address, int Size) {
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u8 SearchPattern[4] = { 0x00, 0x00, 0x00, 0x00 };
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u8 PatchData[4] = { 0x00, 0x00, 0x00, 0x00 };
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u8 *Addr = (u8*)Address;
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int wiiregion = CONF_GetRegion();
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switch (wiiregion) {
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case CONF_REGION_JP:
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SearchPattern[0] = 0x00;
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SearchPattern[1] = 0x4A; // J
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SearchPattern[2] = 0x50; // P
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break;
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case CONF_REGION_EU:
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SearchPattern[0] = 0x02;
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SearchPattern[1] = 0x45; // E
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SearchPattern[2] = 0x55; // U
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break;
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case CONF_REGION_KR:
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SearchPattern[0] = 0x04;
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SearchPattern[1] = 0x4B; // K
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SearchPattern[2] = 0x52; // R
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break;
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case CONF_REGION_CN:
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SearchPattern[0] = 0x05;
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SearchPattern[1] = 0x43; // C
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SearchPattern[2] = 0x4E; // N
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break;
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case CONF_REGION_US:
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default:
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SearchPattern[0] = 0x01;
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SearchPattern[1] = 0x55; // U
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SearchPattern[2] = 0x53; // S
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}
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switch (diskid[3]) {
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case 'J':
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PatchData[1] = 0x4A; // J
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PatchData[2] = 0x50; // P
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break;
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case 'D':
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case 'F':
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case 'P':
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case 'X':
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case 'Y':
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PatchData[1] = 0x45; // E
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PatchData[2] = 0x55; // U
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break;
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case 'E':
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default:
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PatchData[1] = 0x55; // U
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PatchData[2] = 0x53; // S
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}
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while (Size >= 4) {
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if (Addr[0] == SearchPattern[0] && Addr[1] == SearchPattern[1] && Addr[2] == SearchPattern[2] && Addr[3] == SearchPattern[3]) {
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//*Addr = PatchData[0];
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Addr += 1;
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*Addr = PatchData[1];
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Addr += 1;
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*Addr = PatchData[2];
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Addr += 1;
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//*Addr = PatchData[3];
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Addr += 1;
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Size -= 4;
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} else {
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Addr += 4;
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Size -= 4;
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}
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}
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}
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