mini/main.c

/*
	mini - a Free Software replacement for the Nintendo/BroadOn IOS.

Copyright (C) 2008, 2009	Haxx Enterprises <bushing@gmail.com>
Copyright (C) 2008, 2009	Sven Peter <svenpeter@gmail.com>
Copyright (C) 2008, 2009	Hector Martin "marcan" <marcan@marcansoft.com>
Copyright (C) 2009			Andre Heider "dhewg" <dhewg@wiibrew.org>
Copyright (C) 2009		John Kelley <wiidev@kelley.ca>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/
#include "types.h"
#include "utils.h"
#include "start.h"
#include "hollywood.h"
#include "sdhcvar.h"
#include "string.h"
#include "memory.h"
#include "gecko.h"
#include "ff.h"
#include "panic.h"
#include "powerpc_elf.h"
#include "irq.h"
#include "ipc.h"
#include "exception.h"
#include "crypto.h"
#include "nand.h"
#include "boot2.h"

#define PPC_BOOT_FILE "/system/ppcboot.elf"

FATFS fatfs;

u32 _main(void *base)
{
	FRESULT fres;
	int res;
	u32 vector;
	(void)base;

	gecko_init();
	gecko_printf("mini v0.2 loading\n");

	gecko_printf("Initializing exceptions...\n");
	exception_initialize();
	gecko_printf("Configuring caches and MMU...\n");
	mem_initialize();

	gecko_printf("IOSflags: %08x %08x %08x\n",
		read32(0xffffff00), read32(0xffffff04), read32(0xffffff08));
	gecko_printf("          %08x %08x %08x\n",
		read32(0xffffff0c), read32(0xffffff10), read32(0xffffff14));

	irq_initialize();
	irq_enable(IRQ_TIMER);
//	irq_enable(IRQ_GPIO1B);
	irq_enable(IRQ_GPIO1);
	irq_enable(IRQ_RESET);
	gecko_timer_initialize();
	gecko_printf("Interrupts initialized\n");

	crypto_initialize();
	gecko_printf("crypto support initialized\n");

	nand_initialize();
	gecko_printf("NAND initialized.\n");

	boot2_init();

	gecko_printf("Initializing IPC...\n");
	ipc_initialize();

	gecko_printf("Initializing SDHC...\n");
	sdhc_init();

	gecko_printf("Mounting SD...\n");
	fres = f_mount(0, &fatfs);

	if (read32(0x0d800190) & 2) {
		gecko_printf("GameCube compatibility mode detected...\n");
		vector = boot2_run(1, 0x101);
		goto shutdown;
	}

	if(fres != FR_OK) {
		gecko_printf("Error %d while trying to mount SD\n", fres);
		panic2(0, PANIC_MOUNT);
	}

	gecko_printf("Trying to boot:" PPC_BOOT_FILE "\n");

	res = powerpc_boot_file(PPC_BOOT_FILE);
	if(res < 0) {
		gecko_printf("Failed to boot PPC: %d\n", res);
		gecko_printf("Continuing anyway\n");
	}

	gecko_printf("Going into IPC mainloop...\n");
	vector = ipc_process_slow();
	gecko_printf("IPC mainloop done!\n");
	gecko_printf("Shutting down IPC...\n");
	ipc_shutdown();

shutdown:
	gecko_printf("Shutting down interrupts...\n");
	irq_shutdown();
	gecko_printf("Shutting down caches and MMU...\n");
	mem_shutdown();

	gecko_printf("Vectoring to 0x%08x...\n", vector);
	return vector;
}