eesync.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include <loadcore.h>
#include <intrman.h>
#include <ioman.h>
#include <sifman.h>
#include <sysmem.h>
#include <sysclib.h>
 
#define MODNAME "SyncEE"
IRX_ID(MODNAME, 0x01, 0x01);
 
static int PostResetCallback(iop_init_entry_t *arg1, int arg2)
{
#ifdef EESYNC_WIPE_EE_KERNEL_SPACE
    void *block;
    SifDmaTransfer_t dmat;
 
    block = AllocSysMemory(0, 0x7C000, 0);
    memset(block, 0, 0x7C000);
    dmat.src = block;
    dmat.dest = (void *)0x84000;
    dmat.size = 0x7C000;
    dmat.attr = 0;
    sceSifSetDma(&dmat, 1);
    FreeSysMemory(block);
#endif
    (void)arg1;
    (void)arg2;
 
    sceSifSetSMFlag(SIF_STAT_BOOTEND);
 
    return 0;
}
 
#ifdef EESYNC_SECRMAN_DUMMY
static void allocate_empty_space_for_secrman(void)
{
    int fd;
 
    // In the original SCE version, there was obfuscation applied to the file string.
    fd = open("rom0:SECRMAN", O_RDONLY);
    if (fd >= 0)
    {
        int lseek_result;
        int close_result;
 
        lseek_result = lseek(fd, 0, SEEK_END);
        close_result = close(fd);
        if ((lseek_result >= 0) && (close_result >= 0))
        {
            AllocSysMemory(0, (lseek_result == 10033) ? 6400 : 256, NULL);
        }
    }
}
#endif
 
#ifdef EESYNC_REGISTER_EXPORTS
extern struct irx_export_table _exp_eesync;
#endif
 
int _start(int argc, char **argv)
{
#ifdef EESYNC_CHECK_ILOADP
    int *BootMode;
#endif
 
    (void)argc;
    (void)argv;
 
#ifdef EESYNC_CHECK_ILOADP
    BootMode = QueryBootMode(3);
    // If ILOADP bit 0 (Init SIF) is set or ILOADP bit 1 (Do not perform FILEIO services) is set, do not initialize SIF
    if (BootMode != NULL && (((BootMode[1] & 1) != 0) || (BootMode[1] & 2) != 0))
    {
        return MODULE_NO_RESIDENT_END;
    }
#endif
#ifdef EESYNC_REGISTER_EXPORTS
    if (RegisterLibraryEntries(&_exp_eesync) < 0)
    {
        return MODULE_NO_RESIDENT_END;
    }
#endif
#ifdef EESYNC_SECRMAN_DUMMY
    allocate_empty_space_for_secrman();
#endif
    RegisterPostBootCallback(&PostResetCallback, 2, 0);
 
    return MODULE_RESIDENT_END;
}