/* Version Changer for 2.00 downgrading by mph (mphtheone@hotmail.com) Based on : Hello World v1 for PSP v2.0 (w) 24/09/2005 by Groepaz/Hitmen http://www.hitmen-console.org greets to Skylark, Niacin, Skywalker, xor37h, Tyranid */ #include void Main (void); void _start (void) __attribute__ ((section (".text.start"))); // this is our "crt0". not real, very fake. but enough for now :=P void _start (void) { Main(); while (1) {}; // wait forever } // font data const unsigned char font[] = { // much better charset, by eddie! // this is actually the 8x8 neuromancer // vga/ega mode font :) 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, }; #define CMAX_X 60 #define CMAX_Y 38 #define PIXELSIZE 3 //in short #define LINESIZE 512 //in short #define FRAMESIZE 0xAA000 //in byte char line[4][256]; unsigned char *vramtop = (unsigned char *) 0x04000000; unsigned long drawframe; // get vram address for character position unsigned char *GetVramAddr (unsigned long x, unsigned long y) { return vramtop + ((drawframe) ? FRAMESIZE : 0) + (x * 4) + (y * LINESIZE * 4) + 0x40000000; } // print a single character void PutChar (unsigned long x, unsigned long y, unsigned long color, unsigned long bgcolor, unsigned char ch, char drawfg, char drawbg, char mag) { unsigned char *vptr0; //pointer to vram unsigned char *vptr; //pointer to vram const unsigned char *cfont; //pointer to font unsigned long cx, cy; unsigned long b; char mx, my; cfont = font + (ch * 8); vptr0 = GetVramAddr(x,y); for (cy=0;cy<8;cy++) { for (my=0;my> 1; } vptr0 += LINESIZE * 4; // 2 } cfont++; } } // print a string void Print(unsigned long x, unsigned long y, unsigned long color, const char *str) { while ((*str != 0) && (x < CMAX_X) && (y < CMAX_Y)) { PutChar(x*8,y*8,color,0,*str,1,1,1); str++; x++; if (x >= CMAX_X) { x = 0; y++; } } } // clear video ram void Fillvram (unsigned long color) { unsigned char *vptr0; //pointer to vram unsigned long i; vptr0 = GetVramAddr(0,0); for (i=0;i<(FRAMESIZE/4)*2;i++) { *(unsigned long *) vptr0 = color; vptr0 += 4; } } // Memory functions int memcmp (u8 *buf1, u8 *buf2, int size) { int x, r = 0; for (x=0;(x> ((7 - i) * 4)) & 15]; } // Files functions #define PSP_O_RDONLY 0x0001 #define PSP_O_WRONLY 0x0002 #define PSP_O_CREAT 0x0200 #define PSP_O_TRUNC 0x0400 #define PSP_O_APPEND 0x0100 #define PSP_SEEK_SET 0 #define PSP_SEEK_CUR 1 #define PSP_SEEK_END 2 // 0x208F,0x109f50bc,sceIoOpen int sceIoOpen (char *name, int flags, int mode) { // function args are readily in registers, so just do syscall --abu asm("syscall 0x208f"); } //0x208d,0x810c4bc3,sceIoClose void sceIoClose (int fd) { asm("syscall 0x208d"); } //0x2091,0x6a638d83,sceIoRead int sceIoRead (int fd, char *buf, int sz) { asm("syscall 0x2091"); } //0x2093,0x42ec03ac,sceIoWrite int sceIoWrite (int fd, char *buf, int sz) { asm("syscall 0x2093"); } //0x209B,0xb29ddf9c,sceIoDopen void *sceIoDopen (const char *dirname) { asm("syscall 0x209b"); } //0x209C,0xe3eb004c,sceIoDread int sceIoDread (void *fd, SceIoDirent *dir) { asm("syscall 0x209c"); } //0x209D,0xeb092469,sceIoDclose int sceIoDclose (void *fd) { asm("syscall 0x209d"); } //0x209F,0x06a70004,sceIoMkdir int sceIoMkdir (char *n, int m) { asm("syscall 0x209f"); } /* int sceIoUnassign (char *s) { asm("syscall 0x20A9"); } */ int sceIoAssign (char *s, char *s2, char *s3, int d, int d2, int d3) { asm("syscall 0x20A8"); } int sceIoLseek32 (int fd, long offset, int mode) { asm("syscall 0x2097"); } int copy_file (char *src, char *dst) { int srcfd, dstfd, r, w, copied = 0; char buf[512]; srcfd = sceIoOpen (src,PSP_O_RDONLY,0); if (srcfd < 0) return -1; dstfd = sceIoOpen(dst,PSP_O_WRONLY|PSP_O_CREAT|PSP_O_TRUNC,0777); if (dstfd < 0) { r = dstfd; goto out; } for (;;) { r = sceIoRead(srcfd,buf,512); if (r <= 0) goto out; w = sceIoWrite(dstfd,buf,r); if (w != r) { r = 0xfbadcafe; goto out; } copied += r; num2hex(line[2],copied); line[2][8] = 0; PrintLines(); } out: if (srcfd >= 0) sceIoClose(srcfd); if (dstfd >= 0) sceIoClose(dstfd); return r; } char err[64] = ""; // you can copy an error msg here #define FLASH_PATH "flash2:/vsh/etc/index.dat" #define MS_PATH "ms0:/index.dat" #define MSBAK_PATH "ms0:/index.dat.bak" #define BLOCK 512 void Main (void) { int fd, fd2, x; u8 buffer[BLOCK]; u8 buftemp[11] = { 0x49, 0x4E, 0x44, 0x45, 0x58, 0x20, 0x20, 0x20, 0x44, 0x41, 0x54 }; // Pour verifier qu'on est bien au bon endroit u8 *ptr; drawframe = 0; // clear the video ram Fillvram(0x00000000); x = 0; // Lire le block de l'entrée du fichier index.dat strcpy(line[0],"MPHDowngrader v1.0.1"); strcpy(line[1],"Patch FAT entry ..."); PrintLines(); fd = sceIoOpen("lflash:",PSP_O_RDONLY,0); if (fd >= 0) { x = sceIoLseek32(fd,0x9C4000,PSP_SEEK_SET); // 0x9C4000 est le bloc qui contient l'entrée de index.dat sceIoRead(fd,buffer,BLOCK); sceIoClose(fd); } // pointer ptr vers la bonne entrée ptr = &buffer[0xE0]; // regarder si on a le bon block if (!(memcmp(ptr,buftemp,11))) { // Patcher l'attribut du fichier index.dat ptr[11] = 0x20; // Attributs changés (plus read only) ptr[14] = 0xFB; // Octet reservé dans la FAT sert a la protection de copie ? ptr[22] = 0xFB; // Soit disant l'heure du fichier ?? // Copier dans la lflash fd = sceIoOpen("lflash:",PSP_O_RDONLY | PSP_O_WRONLY,0777); if (fd >= 0) { x = sceIoLseek32(fd,0x9C4000,PSP_SEEK_SET); sceIoWrite(fd,buffer,BLOCK); sceIoClose(fd); } } // Astuce pour assigner la flash0 x = sceIoAssign("flash2:", "lflash0:0,0", "flashfat2:", 0, NULL, 0); // Copier une copie du fichier dans la ms strcpy(line[1],"Backup old index.dat file ..."); PrintLines(); x = copy_file(FLASH_PATH,MSBAK_PATH); // Copier le nouveau fichier strcpy(line[2],"Copy new index.dat file ..."); PrintLines(); x = copy_file(MS_PATH,FLASH_PATH); strcpy(line[0],"Patch succesful, please restart and launch update 1.50"); PrintLines(); // endless loop for (;;) { PrintLines(); drawframe = (drawframe) ? 0 : 1; } }