WiiFlow_Lite/source/loader/nk.c

122 lines
3.0 KiB
C

/***************************************************************************
* Copyright (C) 2012 OverjoY for Wiiflow
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* nk.c
*
***************************************************************************/
#include <stdio.h>
#include <ogcsys.h>
#include <string.h>
#include <malloc.h>
#include "nk.h"
#include "armboot.h"
#include "memory/mem2.hpp"
#include "gecko/gecko.h"
bool checked = false;
bool neek = false;
u32 kernelSize = 0;
void *Kernel = NULL;
bool neek2o(void)
{
if(!checked)
{
u32 num = 0;
neek = !(ISFS_ReadDir("/sneek", NULL, &num));
gprintf("WiiFlow is in %s mode\n", neek ? "neek2o" : "real nand");
checked = true;
}
return neek;
}
bool Load_Neek2o_Kernel()
{
if(neek2o())
return true;
FILE *file = NULL;
file = fopen("usb1:/sneek/kernel.bin", "rb");
if(!file)
file = fopen("sd:/sneek/kernel.bin", "rb");
if(file)
{
fseek(file , 0 , SEEK_END);
kernelSize = ftell(file);
rewind(file);
Kernel = malloc(kernelSize);
if(!Kernel)
{
fclose(file);
return false;
}
fread(Kernel, 1, kernelSize, file);
fclose(file);
return true;
}
return false;
}
s32 Launch_nk(u64 TitleID, const char *nandpath)
{
if(neek2o())
{
SYS_ResetSystem(SYS_RESTART, 0, 0);
return 1;
}
memcpy((void*)0x91000000, Kernel, kernelSize);
DCFlushRange((void*)0x91000000, kernelSize);
free(Kernel);
memcfg *MC = (memcfg*)malloc(sizeof(memcfg));
if(MC == NULL)
return 0;
memset(MC, 0, sizeof(memcfg));
MC->magic = 0x666c6f77;
MC->titleid = TitleID;
if(nandpath != NULL)
{
strcpy(MC->nandpath, nandpath);
MC->config |= NCON_EXT_NAND_PATH;
}
memcpy((void *)0x81200000, MC, sizeof(memcfg));
DCFlushRange((void *)(0x81200000), sizeof(memcfg));
free(MC);
/*** Thnx giantpune! ***/
void *mini = MEM1_memalign(32, armboot_size);
if(!mini)
return 0;
memcpy(mini, armboot, armboot_size);
DCFlushRange(mini, armboot_size);
*(u32*)0xc150f000 = 0x424d454d;
asm volatile("eieio");
*(u32*)0xc150f004 = MEM_VIRTUAL_TO_PHYSICAL(mini);
asm volatile("eieio");
IOS_ReloadIOS(0xfe);
MEM1_free(mini);
return 1;
}