Patch #1971285: "Nintendo Wii port"

svn-id: r32547

11 files changed, 1851 insertions, 0 deletions

diff --git a/backends/platform/wii/Makefile b/backends/platform/wii/Makefile
new file mode 100644
index 0000000000..0654fa254d
--- /dev/null
+++ b/backends/platform/wii/Makefile
@@ -0,0 +1,156 @@
+DEBUG_WII = 1
+
+ENABLE_SCUMM = 1
+ENABLE_SCUMM_7_8 = 1
+ENABLE_HE = 1
+# ENABLE_AGI = 1
+ENABLE_AGOS = 1
+ENABLE_CINE = 1
+ENABLE_CRUISE = 1
+ENABLE_DRASCULA = 1
+ENABLE_GOB = 1
+ENABLE_IGOR = 1
+ENABLE_KYRA = 1
+ENABLE_LURE = 1
+ENABLE_M4 = 1
+ENABLE_MADE = 1
+ENABLE_PARALLACTION = 1
+ENABLE_QUEEN = 1
+ENABLE_SAGA = 1
+ENABLE_SKY = 1
+ENABLE_SWORD1 = 1
+ENABLE_SWORD2 = 1
+ENABLE_TOUCHE = 1
+
+DISABLE_HQ_SCALERS = 1
+DISABLE_SCALERS = 1
+
+USE_ZLIB = 1
+USE_MAD = 1
+USE_TREMOR = 1
+USE_FLAC = 1
+USE_MPEG2 = 1
+USE_MT32EMU = 1
+
+srcdir = ../../..
+VPATH = $(srcdir)
+HAVE_GCC3 = 1
+
+DISTPATH = $(srcdir)/dists/wii
+
+ifeq ($(strip $(DEVKITPPC)),)
+$(error "Please set DEVKITPPC in your environment. export DEVKITPPC=<path to>devkitPPC")
+endif
+
+PREFIX  = $(DEVKITPPC)/bin/powerpc-gekko-
+CXX     = $(PREFIX)g++
+AS      = $(PREFIX)gcc
+LD      = $(PREFIX)gcc
+AR      = $(PREFIX)ar cru
+RANLIB  = $(PREFIX)ranlib
+STRIP   = $(PREFIX)strip -g
+OBJCOPY = $(PREFIX)objcopy
+MKDIR   = mkdir -p
+RM      = rm -f
+CP      = cp -f
+
+TARGET  = scummvm-wii
+
+MACHDEP  = -DGEKKO -mrvl -mcpu=750 -meabi -mhard-float \
+			-ffunction-sections -fdata-sections -fmodulo-sched
+
+INCDIR   = $(srcdir) . $(srcdir)/engines/ $(DEVKITPRO)/libogc/include
+LIBDIR   = $(DEVKITPRO)/libogc/lib/wii
+
+CXXFLAGS = -g -Os -Wall $(MACHDEP) -D__WII__ \
+			-Wno-multichar -fno-exceptions -fno-rtti
+
+CXXFLAGS += $(addprefix -I,$(INCDIR))
+LDFLAGS   = -g $(MACHDEP) -Wl,-Map,$(TARGET).elf.map
+LDFLAGS  += $(addprefix -L,$(LIBDIR))
+LIBS      = -lstdc++ -lfat -lwiiuse -lbte -logc -lm
+
+CXXFLAGS += -I$(DEVKITPRO)/3rd/wii/include
+LDFLAGS  += -L$(DEVKITPRO)/3rd/wii/lib
+
+ifdef DEBUG_WII
+CXXFLAGS += -DDEBUG_WII
+LIBS     += -ldb
+endif
+
+ifdef USE_ZLIB
+CXXFLAGS += -DUSE_ZLIB
+LIBS     += -lz
+endif
+
+ifdef USE_MAD
+CXXFLAGS += -DUSE_MAD -I$(DEVKITPRO)/libogc/include/mad
+LIBS     += -lmad
+endif
+
+ifdef USE_TREMOR
+CXXFLAGS += -DUSE_VORBIS -DUSE_TREMOR
+LIBS     += -lvorbisidec
+endif
+
+ifdef USE_FLAC
+CXXFLAGS += -DUSE_FLAC
+LIBS     += -lFLAC
+endif
+
+ifdef USE_MPEG2
+CXXFLAGS += -DUSE_MPEG2
+LIBS     += -lmpeg2
+endif
+
+ifdef USE_MT32EMU
+CXXFLAGS += -DUSE_MT32EMU
+endif
+
+OBJS := backends/platform/wii/main.o \
+		backends/platform/wii/gecko_console.o \
+		backends/platform/wii/gx_supp.o \
+		backends/platform/wii/osystem.o \
+		backends/platform/wii/osystem_gfx.o \
+		backends/platform/wii/osystem_sfx.o \
+		backends/platform/wii/osystem_events.o
+
+include $(srcdir)/Makefile.common
+
+.PHONY: clean-wii distclean-wii upload dist
+
+all: $(TARGET).dol
+
+$(TARGET).dol: $(TARGET).elf
+	$(OBJCOPY) -O binary $< $@
+
+$(TARGET).elf: $(OBJS)
+	$(LD) $^ $(LDFLAGS) $(LIBS) -o $@
+
+clean: clean-wii
+
+clean-wii:
+	@-$(RM) $(TARGET).elf $(TARGET).elf.map $(TARGET).dol
+
+distclean: distclean-wii
+
+distclean-wii:
+	@-$(RM) dist
+
+upload:
+	$(DEVKITPPC)/bin/wiiload $(TARGET).dol
+
+dist:
+	$(MKDIR) dist/apps/scummvm
+	$(CP) $(TARGET).dol dist/apps/scummvm/boot.dol
+	$(CP) $(DISTPATH)/meta.xml dist/apps/scummvm/
+	$(CP) $(DISTPATH)/icon.png dist/apps/scummvm/
+	$(CP) $(DISTPATH)/READMII dist/apps/scummvm/
+	$(CP) $(srcdir)/AUTHORS dist/apps/scummvm/
+	$(CP) $(srcdir)/COPYING dist/apps/scummvm/
+	$(CP) $(srcdir)/COPYRIGHT dist/apps/scummvm/
+	$(CP) $(srcdir)/NEWS dist/apps/scummvm/
+	$(CP) $(srcdir)/README dist/apps/scummvm/
+	$(CP) $(DIST_FILES_THEMES) dist/apps/scummvm/
+	$(CP) $(DIST_FILES_ENGINEDATA) dist/apps/scummvm/
+
diff --git a/backends/platform/wii/gecko_console.cpp b/backends/platform/wii/gecko_console.cpp
new file mode 100644
index 0000000000..c419f6e7e5
--- /dev/null
+++ b/backends/platform/wii/gecko_console.cpp
@@ -0,0 +1,91 @@
+/*-------------------------------------------------------------
+
+Copyright (C) 2008
+Hector Martin (marcan)
+
+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.
+
+-------------------------------------------------------------*/
+
+#include <stdio.h>
+#include <sys/iosupport.h>
+#include <ogcsys.h>
+#include <gccore.h>
+#include <reent.h>
+
+#include "gecko_console.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static const devoptab_t *dotab_console;
+int usb_sendbuffer_safe(s32 chn,const void *buffer,int size);
+int usb_sendbuffer(s32 chn,const void *buffer,int size);
+
+int __gecko_write(struct _reent *r,int fd,const char *ptr,int len) {
+	char *tmp = (char*)ptr;
+	u32 level;
+	if(dotab_console)
+		dotab_console->write_r(r,fd,ptr,len);
+		
+	if(!tmp || len<=0)
+		return -1;
+	level = IRQ_Disable();
+	usb_sendbuffer(1, ptr, len);
+	IRQ_Restore(level);
+	return len;
+}
+
+const devoptab_t dotab_gecko = {
+	"stdout",	// device name
+	0,			// size of file structure
+	NULL,		// device open
+	NULL,		// device close
+	__gecko_write,	// device write
+	NULL,		// device read
+	NULL,		// device seek
+	NULL,		// device fstat
+	NULL,		// device stat
+	NULL,		// device link
+	NULL,		// device unlink
+	NULL,		// device chdir
+	NULL,		// device rename
+	NULL,		// device mkdir
+	0,			// dirStateSize
+	NULL,		// device diropen_r
+	NULL,		// device dirreset_r
+	NULL,		// device dirnext_r
+	NULL,		// device dirclose_r
+	NULL		// device statvfs_r
+};
+
+void gecko_console_init(int chain) {
+	dotab_console = NULL;
+	if(chain)
+		dotab_console = devoptab_list[STD_OUT];
+	devoptab_list[STD_OUT] = &dotab_gecko;
+	devoptab_list[STD_ERR] = &dotab_gecko;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
diff --git a/backends/platform/wii/gecko_console.h b/backends/platform/wii/gecko_console.h
new file mode 100644
index 0000000000..ba7c393add
--- /dev/null
+++ b/backends/platform/wii/gecko_console.h
@@ -0,0 +1,14 @@
+#ifndef _WII_GECKO_CONSOLE_H_
+#define _WII_GECKO_CONSOLE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void gecko_console_init(int chain);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/backends/platform/wii/gx_supp.cpp b/backends/platform/wii/gx_supp.cpp
new file mode 100644
index 0000000000..4c7b8ed58a
--- /dev/null
+++ b/backends/platform/wii/gx_supp.cpp
@@ -0,0 +1,264 @@
+/****************************************************************************
+*	Generic GX Support for Emulators
+*	softdev 2007
+*
+*	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; either version 2 of the License, or
+*	(at your option) any later version.
+*
+*	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.,
+*	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* NGC GX Video Functions
+*
+* These are pretty standard functions to setup and use GX scaling.
+****************************************************************************/
+
+#include <gccore.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+
+#define DEFAULT_FIFO_SIZE (256 * 1024)
+
+#define HASPECT 320
+#define VASPECT 240
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*** 2D ***/
+static u32 whichfb;
+static u32 *xfb[2];
+static GXRModeObj *vmode;
+
+/*** 3D GX ***/
+static u8 *gp_fifo;
+
+/*** Texture memory ***/
+static u8 *texturemem;
+static u32 texturesize;
+
+GXTexObj texobj;
+static Mtx view;
+static u16 vwidth, vheight, oldvwidth, oldvheight;
+
+/* New texture based scaler */
+typedef struct tagcamera {
+	Vector pos;
+	Vector up;
+	Vector view;
+} camera;
+
+static s16 square[] ATTRIBUTE_ALIGN(32) = {
+	-HASPECT, VASPECT, 0,
+	HASPECT, VASPECT, 0,
+	HASPECT, -VASPECT, 0,
+	-HASPECT, -VASPECT, 0,
+};
+
+static camera cam = {
+	{ 0.0f, 0.0f, 370.0f },
+	{ 0.0f, 0.5f, 0.0f },
+	{ 0.0f, 0.0f, -0.5f }
+};
+
+void GX_InitVideo() {
+	vmode = VIDEO_GetPreferredMode(NULL);
+	VIDEO_Configure(vmode);
+
+	xfb[0] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer(vmode));
+	xfb[1] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer(vmode));
+	gp_fifo = (u8 *) memalign(32, DEFAULT_FIFO_SIZE);
+
+	VIDEO_ClearFrameBuffer(vmode, xfb[0], COLOR_BLACK);
+	VIDEO_ClearFrameBuffer(vmode, xfb[1], COLOR_BLACK);
+
+	whichfb = 0;
+	VIDEO_SetNextFramebuffer(xfb[whichfb]);
+	VIDEO_SetBlack(FALSE);
+	VIDEO_Flush();
+	VIDEO_WaitVSync();
+
+	if (vmode->viTVMode & VI_NON_INTERLACE)
+		VIDEO_WaitVSync();
+}
+
+/****************************************************************************
+ * Scaler Support Functions
+ ****************************************************************************/
+static void draw_init(void) {
+	GX_ClearVtxDesc();
+	GX_SetVtxDesc(GX_VA_POS, GX_INDEX8);
+	GX_SetVtxDesc(GX_VA_CLR0, GX_INDEX8);
+	GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
+
+	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_S16, 0);
+	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
+	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
+
+	GX_SetArray(GX_VA_POS, square, 3 * sizeof(s16));
+
+	GX_SetNumTexGens(1);
+	GX_SetTexCoordGen(GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
+
+	GX_InvalidateTexAll();
+
+	GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565,
+					GX_CLAMP, GX_CLAMP, GX_FALSE);
+}
+
+static void draw_vert(u8 pos, u8 c, f32 s, f32 t) {
+	GX_Position1x8(pos);
+	GX_Color1x8(c);
+	GX_TexCoord2f32(s, t);
+}
+
+static void draw_square(Mtx v) {
+	Mtx m;
+	Mtx mv;
+
+	guMtxIdentity(m);
+	guMtxTransApply(m, m, 0, 0, -100);
+	guMtxConcat(v, m, mv);
+
+	GX_LoadPosMtxImm(mv, GX_PNMTX0);
+	GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
+	draw_vert(0, 0, 0.0, 0.0);
+	draw_vert(1, 0, 1.0, 0.0);
+	draw_vert(2, 0, 1.0, 1.0);
+	draw_vert(3, 0, 0.0, 1.0);
+	GX_End();
+}
+
+/****************************************************************************
+ * StartGX
+ ****************************************************************************/
+void GX_Start(u16 width, u16 height, s16 haspect, s16 vaspect) {
+	Mtx p;
+
+	GX_AbortFrame();
+
+	/*** Set new aspect ***/
+	square[0] = square[9] = -haspect;
+	square[3] = square[6] = haspect;
+	square[1] = square[4] = vaspect;
+	square[7] = square[10] = -vaspect;
+
+	/*** Allocate 32byte aligned texture memory ***/
+	texturesize = (width * height) * 2;
+	texturemem = (u8 *) memalign(32, texturesize);
+
+	GXColor gxbackground = { 0, 0, 0, 0xff };
+
+	/*** Clear out FIFO area ***/
+	memset(gp_fifo, 0, DEFAULT_FIFO_SIZE);
+
+	/*** Initialise GX ***/
+	GX_Init(gp_fifo, DEFAULT_FIFO_SIZE);
+	GX_SetCopyClear(gxbackground, 0x00ffffff);
+
+	GX_SetViewport(0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
+	GX_SetDispCopyYScale((f32) vmode->xfbHeight / (f32) vmode->efbHeight);
+	GX_SetScissor(0, 0, vmode->fbWidth, vmode->efbHeight);
+	GX_SetDispCopySrc(0, 0, vmode->fbWidth, vmode->efbHeight);
+	GX_SetDispCopyDst(vmode->fbWidth, vmode->xfbHeight);
+	GX_SetCopyFilter(vmode->aa, vmode->sample_pattern, GX_TRUE,
+						vmode->vfilter);
+	GX_SetFieldMode(vmode->field_rendering,
+					((vmode->viHeight == 2 * vmode->xfbHeight) ?
+					GX_ENABLE : GX_DISABLE));
+	GX_SetPixelFmt(GX_PF_RGB8_Z24, GX_ZC_LINEAR);
+	GX_SetCullMode(GX_CULL_NONE);
+	GX_CopyDisp(xfb[whichfb ^ 1], GX_TRUE);
+	GX_SetDispCopyGamma(GX_GM_1_0);
+
+	guPerspective(p, 60, 1.33f, 10.0f, 1000.0f);
+	GX_LoadProjectionMtx(p, GX_PERSPECTIVE);
+	memset(texturemem, 0, texturesize);
+
+	GX_Flush();
+
+	/*** Setup for first call to scaler ***/
+	vwidth = vheight = -1;
+}
+
+/****************************************************************************
+* GX_Render
+*
+* Pass in a buffer, width and height to update as a tiled RGB565 texture
+****************************************************************************/
+void GX_Render(u16 width, u16 height, u8 *buffer, u16 pitch) {
+	u16 h, w;
+	u64 *dst = (u64 *) texturemem;
+	u64 *src1 = (u64 *) buffer;
+	u64 *src2 = (u64 *) (buffer + pitch);
+	u64 *src3 = (u64 *) (buffer + (pitch * 2));
+	u64 *src4 = (u64 *) (buffer + (pitch * 3));
+	u16 rowpitch = (pitch >> 3) * 3 + pitch % 8;
+
+	vwidth = width;
+	vheight = height;
+
+	whichfb ^= 1;
+
+	if ((oldvheight != vheight) || (oldvwidth != vwidth)) {
+		/** Update scaling **/
+		oldvwidth = vwidth;
+		oldvheight = vheight;
+		draw_init();
+		memset(&view, 0, sizeof(Mtx));
+		guLookAt(view, &cam.pos, &cam.up, &cam.view);
+		GX_SetViewport(0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
+	}
+
+	GX_InvVtxCache();
+	GX_InvalidateTexAll();
+	GX_SetTevOp(GX_TEVSTAGE0, GX_DECAL);
+	GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
+
+	for (h = 0; h < vheight; h += 4) {
+		for (w = 0; w < (vwidth >> 2); w++) {
+			*dst++ = *src1++;
+			*dst++ = *src2++;
+			*dst++ = *src3++;
+			*dst++ = *src4++;
+		}
+
+		src1 += rowpitch;
+		src2 += rowpitch;
+		src3 += rowpitch;
+		src4 += rowpitch;
+	}
+
+	DCFlushRange(texturemem, texturesize);
+
+	GX_SetNumChans(1);
+	GX_LoadTexObj(&texobj, GX_TEXMAP0);
+
+	draw_square(view);
+
+	GX_DrawDone();
+
+	GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
+	GX_SetColorUpdate(GX_TRUE);
+	GX_CopyDisp(xfb[whichfb], GX_TRUE);
+	GX_Flush();
+
+	VIDEO_SetNextFramebuffer(xfb[whichfb]);
+	VIDEO_Flush();
+}
+
+#ifdef __cplusplus
+}
+#endif
+
diff --git a/backends/platform/wii/gx_supp.h b/backends/platform/wii/gx_supp.h
new file mode 100644
index 0000000000..9393e93a26
--- /dev/null
+++ b/backends/platform/wii/gx_supp.h
@@ -0,0 +1,39 @@
+/****************************************************************************
+*   Generic GX Scaler 
+*   softdev 2007
+*
+*   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; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   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.,
+*   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* NGC GX Video Functions
+*
+* These are pretty standard functions to setup and use GX scaling.
+****************************************************************************/
+#ifndef _WII_GX_SUPP_H_
+#define _WII_GX_SUPP_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void GX_InitVideo();
+
+void GX_Start(u16 width, u16 height, s16 haspect, s16 vaspect);
+void GX_Render(u16 width, u16 height, u8 *buffer, u16 pitch);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/backends/platform/wii/main.cpp b/backends/platform/wii/main.cpp
new file mode 100644
index 0000000000..7529df6de3
--- /dev/null
+++ b/backends/platform/wii/main.cpp
@@ -0,0 +1,88 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <fat.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "osystem.h"
+
+#ifdef DEBUG_WII
+#include <debug.h>
+#include <gecko_console.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int main(int argc, char *argv[]) {
+	s32 res;
+
+	VIDEO_Init();
+	PAD_Init();
+	AUDIO_Init(NULL);
+
+#ifdef DEBUG_WII
+	gecko_console_init(0);
+	//DEBUG_Init(GDBSTUB_DEVICE_USB, 1);
+#endif
+
+	printf("startup\n");
+
+	if (!fatInitDefault()) {
+		printf("fatInitDefault failed\n");
+	} else {
+		// set the default path if libfat couldnt set it
+		// this allows loading over tcp/usbgecko
+		char buf[MAXPATHLEN];
+
+		getcwd(buf, MAXPATHLEN);
+		if (!strcmp(buf, "fat:/"))
+			chdir("/apps/scummvm");
+
+		//fatEnableReadAhead(PI_DEFAULT, 32, 128);
+	}
+
+	g_system = new OSystem_Wii();
+	assert(g_system);
+
+	res = scummvm_main(argc, argv);
+	g_system->quit();
+
+	printf("shutdown\n");
+
+	if (!fatUnmount(PI_DEFAULT)) {
+		printf("fatUnmount failed\n");
+		fatUnsafeUnmount(PI_DEFAULT);
+	}
+
+	printf("reloading\n");
+
+	return res;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
diff --git a/backends/platform/wii/osystem.cpp b/backends/platform/wii/osystem.cpp
new file mode 100644
index 0000000000..97bee24d0f
--- /dev/null
+++ b/backends/platform/wii/osystem.cpp
@@ -0,0 +1,188 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "osystem.h"
+#include "backends/fs/wii/wii-fs-factory.h"
+
+#include <unistd.h>
+
+#include <ogc/mutex.h>
+#include <ogc/lwp_watchdog.h>
+
+OSystem_Wii::OSystem_Wii() :
+	_startup_time(0),
+	_alarm(-1),
+
+	_palette(NULL),
+	_cursorPalette(NULL),
+	_cursorPaletteDisabled(true),
+
+	_gameWidth(0),
+	_gameHeight(0),
+	_gamePixels(NULL),
+
+	_overlayVisible(false),
+	_overlayWidth(0),
+	_overlayHeight(0),
+	_overlaySize(0),
+	_overlayPixels(NULL),
+
+	_lastScreenUpdate(0),
+	_texture(NULL),
+	_currentWidth(0),
+	_currentHeight(0),
+
+	_supportedGraphicsModes(NULL),
+	_activeGraphicsMode(-1),
+
+	_mouseVisible(false),
+	_mouseX(0),
+	_mouseY(0),
+	_mouseWidth(0),
+	_mouseHeight(0),
+	_mouseHotspotX(0),
+	_mouseHotspotY(0),
+	_mouseKeyColor(0),
+	_mouseCursor(NULL),
+
+	_savefile(NULL),
+	_mixer(NULL),
+	_timer(NULL) {
+}
+
+OSystem_Wii::~OSystem_Wii() {
+	if (_savefile) {
+		delete _savefile;
+		_savefile = NULL;
+	}
+
+	if (_mixer) {
+		delete _mixer;
+		_mixer = NULL;
+	}
+
+	if (_timer) {
+		delete _timer;
+		_timer = NULL;
+	}
+}
+
+void OSystem_Wii::initBackend() {
+	_startup_time = gettime();
+
+	_savefile = new DefaultSaveFileManager();
+	_mixer = new Audio::Mixer();
+	_timer = new DefaultTimerManager();
+
+	initGfx();
+	initSfx();
+	initEvents();
+
+	OSystem::initBackend();
+}
+
+void OSystem_Wii::quit() {
+	deinitEvents();
+	deinitSfx();
+	deinitGfx();
+}
+
+bool OSystem_Wii::hasFeature(Feature f) {
+	return f == kFeatureCursorHasPalette;
+}
+
+void OSystem_Wii::setFeatureState(Feature f, bool enable) {
+}
+
+bool OSystem_Wii::getFeatureState(Feature f) {
+	return false;
+}
+
+uint32 OSystem_Wii::getMillis() {
+	return ticks_to_millisecs(diff_ticks(_startup_time, gettime()));
+}
+
+void OSystem_Wii::delayMillis(uint msecs) {
+	usleep(msecs * 1000);
+}
+
+OSystem::MutexRef OSystem_Wii::createMutex() {
+	mutex_t *mutex = (mutex_t *) malloc(sizeof(mutex_t));
+	s32 res = LWP_MutexInit(mutex, false);
+
+	if (res) {
+		printf("ERROR creating mutex\n");
+		delete mutex;
+		return NULL;
+	}
+
+	return (MutexRef) mutex;
+}
+
+void OSystem_Wii::lockMutex(MutexRef mutex) {
+	s32 res = LWP_MutexLock(*(mutex_t *) mutex);
+
+	if (res)
+		printf("ERROR locking mutex %p (%d)\n", mutex, res);
+}
+
+void OSystem_Wii::unlockMutex(MutexRef mutex) {
+	s32 res = LWP_MutexUnlock(*(mutex_t *) mutex);
+
+	if (res)
+		printf("ERROR unlocking mutex %p (%d)\n", mutex, res);
+}
+
+void OSystem_Wii::deleteMutex(MutexRef mutex) {
+	s32 res = LWP_MutexDestroy(*(mutex_t *) mutex);
+
+	if (res)
+		printf("ERROR destroying mutex %p (%d)\n", mutex, res);
+}
+
+void OSystem_Wii::setWindowCaption(const char *caption) {
+	printf("window caption: %s\n", caption);
+}
+
+Common::SaveFileManager *OSystem_Wii::getSavefileManager() {
+	assert(_savefile);
+	return _savefile;
+}
+
+Audio::Mixer *OSystem_Wii::getMixer() {
+	assert(_mixer);
+	return _mixer;
+}
+
+Common::TimerManager *OSystem_Wii::getTimerManager() {
+	assert(_timer);
+	return _timer;
+}
+
+FilesystemFactory *OSystem_Wii::getFilesystemFactory() {
+	return &WiiFilesystemFactory::instance();
+}
+
+void OSystem_Wii::getTimeAndDate(struct tm &t) const {
+	time_t curTime = time(0);
+	t = *localtime(&curTime);
+}
+
diff --git a/backends/platform/wii/osystem.h b/backends/platform/wii/osystem.h
new file mode 100644
index 0000000000..f65310bada
--- /dev/null
+++ b/backends/platform/wii/osystem.h
@@ -0,0 +1,163 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _WII_OSYSTEM_H_
+#define _WII_OSYSTEM_H_
+
+#include "common/system.h"
+#include "base/main.h"
+
+#include "common/rect.h"
+#include "common/events.h"
+
+#include "backends/saves/default/default-saves.h"
+#include "backends/timer/default/default-timer.h"
+#include "graphics/surface.h"
+#include "sound/mixer.h"
+
+#include <gctypes.h>
+#include <gccore.h>
+#include <ogcsys.h>
+
+class OSystem_Wii : public OSystem {
+private:
+	s64 _startup_time;
+	syswd_t _alarm;
+
+	u16 *_palette;
+	u16 *_cursorPalette;
+	bool _cursorPaletteDisabled;
+
+	u16 _gameWidth, _gameHeight;
+	u8 *_gamePixels;
+	Graphics::Surface _surface;
+
+	bool _overlayVisible;
+	u16 _overlayWidth, _overlayHeight;
+	u32 _overlaySize;
+	OverlayColor *_overlayPixels;
+
+	u32 _lastScreenUpdate;
+	u16 *_texture;
+	u16 _currentWidth, _currentHeight;
+
+	OSystem::GraphicsMode *_supportedGraphicsModes;
+	s32 _activeGraphicsMode;
+
+	bool _mouseVisible;
+	s32 _mouseX, _mouseY;
+	u32 _mouseWidth, _mouseHeight;
+	s32 _mouseHotspotX, _mouseHotspotY;
+	u8 _mouseKeyColor;
+	u8 *_mouseCursor;
+
+	u32 _lastPadCheck;
+
+	void initGfx();
+	void deinitGfx();
+
+	void initSfx();
+	void deinitSfx();
+
+	void initEvents();
+	void deinitEvents();
+	void updateEventScreenResolution();
+
+protected:
+	Common::SaveFileManager *_savefile;
+	Audio::Mixer *_mixer;
+	DefaultTimerManager *_timer;
+
+public:
+	OSystem_Wii();
+	virtual ~OSystem_Wii();
+
+	virtual void initBackend();
+
+	virtual bool hasFeature(Feature f);
+	virtual void setFeatureState(Feature f, bool enable);
+	virtual bool getFeatureState(Feature f);
+	virtual const GraphicsMode *getSupportedGraphicsModes() const;
+	virtual int getDefaultGraphicsMode() const;
+	bool setGraphicsMode(const char *name);
+	virtual bool setGraphicsMode(int mode);
+	virtual int getGraphicsMode() const;
+	virtual void initSize(uint width, uint height);
+	virtual int16 getWidth();
+	virtual int16 getHeight();
+	virtual void setPalette(const byte *colors, uint start, uint num);
+	virtual void grabPalette(byte *colors, uint start, uint num);
+	virtual void setCursorPalette(const byte *colors, uint start, uint num);
+	virtual void disableCursorPalette(bool disable);
+	virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y,
+									int w, int h);
+	virtual void updateScreen();
+	virtual Graphics::Surface *lockScreen();
+	virtual void unlockScreen();
+	virtual void setShakePos(int shakeOffset);
+
+	virtual void showOverlay();
+	virtual void hideOverlay();
+	virtual void clearOverlay();
+	virtual void grabOverlay(OverlayColor *buf, int pitch);
+	virtual void copyRectToOverlay(const OverlayColor *buf, int pitch,
+									int x, int y, int w, int h);
+	virtual int16 getOverlayWidth();
+	virtual int16 getOverlayHeight();
+
+	virtual OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b);
+	virtual void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b);
+	virtual OverlayColor ARGBToColor(uint8 a, uint8 r, uint8 g, uint8 b);
+	virtual void colorToARGB(OverlayColor color, uint8 &a, uint8 &r,
+								uint8 &g, uint8 &b);
+
+	virtual bool showMouse(bool visible);
+
+	virtual void warpMouse(int x, int y);
+	virtual void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX,
+								int hotspotY, byte keycolor = 255,
+								int cursorTargetScale = 1);
+
+	virtual bool pollEvent(Common::Event &event);
+	virtual uint32 getMillis();
+	virtual void delayMillis(uint msecs);
+
+	virtual MutexRef createMutex();
+	virtual void lockMutex(MutexRef mutex);
+	virtual void unlockMutex(MutexRef mutex);
+	virtual void deleteMutex(MutexRef mutex);
+
+	typedef void (*SoundProc)(void *param, byte *buf, int len);
+	virtual int getOutputSampleRate() const;
+
+	virtual void quit();
+
+	virtual void setWindowCaption(const char *caption);
+
+	virtual Common::SaveFileManager *getSavefileManager();
+	virtual Audio::Mixer *getMixer();
+	virtual Common::TimerManager *getTimerManager();
+	FilesystemFactory *getFilesystemFactory();
+	void getTimeAndDate(struct tm &t) const;
+};
+
+#endif
+
diff --git a/backends/platform/wii/osystem_events.cpp b/backends/platform/wii/osystem_events.cpp
new file mode 100644
index 0000000000..09dfb5e96b
--- /dev/null
+++ b/backends/platform/wii/osystem_events.cpp
@@ -0,0 +1,262 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <unistd.h>
+#include <malloc.h>
+
+#ifndef GAMECUBE
+#include <wiiuse/wpad.h>
+#endif
+
+#include <ogc/lwp_watchdog.h>
+
+#include "osystem.h"
+
+#define TIMER_THREAD_STACKSIZE (1024 * 32)
+#define TIMER_THREAD_PRIO 64
+
+#define PAD_CHECK_TIME 40
+
+#ifndef GAMECUBE
+#define PADS_A (PAD_BUTTON_A | (WPAD_BUTTON_A << 16))
+#define PADS_B (PAD_BUTTON_B | (WPAD_BUTTON_B << 16))
+#define PADS_X (PAD_BUTTON_X | (WPAD_BUTTON_MINUS << 16))
+#define PADS_Y (PAD_BUTTON_Y | (WPAD_BUTTON_PLUS << 16))
+#define PADS_Z (PAD_TRIGGER_Z | (WPAD_BUTTON_2 << 16))
+#define PADS_START (PAD_BUTTON_START | (WPAD_BUTTON_HOME << 16))
+#define PADS_UP (PAD_BUTTON_UP | (WPAD_BUTTON_UP << 16))
+#define PADS_DOWN (PAD_BUTTON_DOWN | (WPAD_BUTTON_DOWN << 16))
+#define PADS_LEFT (PAD_BUTTON_LEFT | (WPAD_BUTTON_LEFT << 16))
+#define PADS_RIGHT (PAD_BUTTON_RIGHT | (WPAD_BUTTON_RIGHT << 16))
+#else
+#define PADS_A PAD_BUTTON_A
+#define PADS_B PAD_BUTTON_B
+#define PADS_X PAD_BUTTON_X
+#define PADS_Y PAD_BUTTON_Y
+#define PADS_Z PAD_TRIGGER_Z
+#define PADS_START PAD_BUTTON_START
+#define PADS_UP PAD_BUTTON_UP
+#define PADS_DOWN PAD_BUTTON_DOWN
+#define PADS_LEFT PAD_BUTTON_LEFT
+#define PADS_RIGHT PAD_BUTTON_RIGHT
+#endif
+
+static lwpq_t timer_queue;
+static lwp_t timer_thread;
+static u8 *timer_stack;
+static bool timer_thread_running = false;
+static bool timer_thread_quit = false;
+
+static void * timer_thread_func(void *arg) {
+	while (!timer_thread_quit) {
+		DefaultTimerManager *tm =
+			(DefaultTimerManager *) g_system->getTimerManager();
+		tm->handler();
+
+		usleep(1000 * 10);
+	}
+
+	return NULL;
+}
+
+void OSystem_Wii::initEvents() {
+	timer_thread_quit = false;
+
+	timer_stack = (u8 *) memalign(32, TIMER_THREAD_STACKSIZE);
+	memset(timer_stack, 0, TIMER_THREAD_STACKSIZE);
+
+	LWP_InitQueue(&timer_queue);
+
+	s32 res = LWP_CreateThread(&timer_thread, timer_thread_func, NULL,
+								timer_stack, TIMER_THREAD_STACKSIZE,
+								TIMER_THREAD_PRIO);
+
+	if (res) {
+		printf("ERROR creating timer thread: %d\n", res);
+		LWP_CloseQueue(timer_queue);
+	}
+
+	timer_thread_running = res == 0;
+
+#ifndef GAMECUBE
+	WPAD_Init();
+	WPAD_SetDataFormat(WPAD_CHAN_0, WPAD_FMT_BTNS_ACC_IR);
+	WPAD_SetIdleTimeout(120);
+#endif
+}
+
+void OSystem_Wii::deinitEvents() {
+	if (timer_thread_running) {
+		timer_thread_quit = true;
+		LWP_ThreadBroadcast(timer_queue);
+
+		LWP_JoinThread(timer_thread, NULL);
+		LWP_CloseQueue(timer_queue);
+
+		timer_thread_running = false;
+	}
+
+#ifndef GAMECUBE
+	WPAD_Shutdown();
+#endif
+}
+
+void OSystem_Wii::updateEventScreenResolution() {
+#ifndef GAMECUBE
+	WPAD_SetVRes(WPAD_CHAN_0, _currentWidth + _currentWidth / 5,
+					_currentHeight + _currentHeight / 5);
+#endif
+}
+
+#define KBD_EVENT(pad_button, kbd_keycode, kbd_ascii) \
+	do { \
+		if ((bd | bu) & pad_button) { \
+			if (bd & pad_button) \
+				event.type = Common::EVENT_KEYDOWN; \
+			else \
+				event.type = Common::EVENT_KEYUP; \
+			event.kbd.keycode = kbd_keycode; \
+			event.kbd.ascii = kbd_ascii; \
+			return true; \
+		} \
+	} while (0)
+
+bool OSystem_Wii::pollEvent(Common::Event &event) {
+	u32 bd, bh, bu;
+
+	PAD_ScanPads();
+
+	bd = PAD_ButtonsDown(0);
+	bh = PAD_ButtonsHeld(0);
+	bu = PAD_ButtonsUp(0);
+
+#ifndef GAMECUBE
+	WPAD_ScanPads();
+
+	s32 res = WPAD_Probe(0, NULL);
+
+	if (res == WPAD_ERR_NONE) {
+
+		bd |= WPAD_ButtonsDown(0) << 16;
+		bh |= WPAD_ButtonsHeld(0) << 16;
+		bu |= WPAD_ButtonsUp(0) << 16;
+	}
+#endif
+
+	if (bd || bu) {
+		if (bh & PADS_UP)
+			event.kbd.flags = Common::KBD_SHIFT;
+
+		KBD_EVENT(PADS_Z, Common::KEYCODE_RETURN, Common::ASCII_RETURN);
+		KBD_EVENT(PADS_X, Common::KEYCODE_ESCAPE, Common::ASCII_ESCAPE);
+		KBD_EVENT(PADS_Y, Common::KEYCODE_PERIOD, '.');
+		KBD_EVENT(PADS_START, Common::KEYCODE_F5, Common::ASCII_F5);
+		KBD_EVENT(PADS_UP, Common::KEYCODE_LSHIFT, 0);
+		KBD_EVENT(PADS_DOWN, Common::KEYCODE_0, '0');
+		KBD_EVENT(PADS_LEFT, Common::KEYCODE_y, 'y');
+		KBD_EVENT(PADS_RIGHT, Common::KEYCODE_n, 'n');
+
+		if ((bd | bu) & (PADS_A | PADS_B)) {
+			if (bd & PADS_A)
+				event.type = Common::EVENT_LBUTTONDOWN;
+			else if (bu & PADS_A)
+				event.type = Common::EVENT_LBUTTONUP;
+			else if (bd & PADS_B)
+				event.type = Common::EVENT_RBUTTONDOWN;
+			else if (bu & PADS_B)
+				event.type = Common::EVENT_RBUTTONUP;
+
+			event.mouse.x = _mouseX;
+			event.mouse.y = _mouseY;
+
+			return true;
+		}
+	}
+
+	s32 mx = _mouseX;
+	s32 my = _mouseY;
+
+#ifndef GAMECUBE
+	if (res == WPAD_ERR_NONE) {
+		struct ir_t ir;
+
+		WPAD_IR(0, &ir);
+
+		if (ir.valid) {
+			mx = ir.x - _currentWidth / 10;
+			my = ir.y - _currentHeight / 10;
+
+			if (mx < 0)
+				mx = 0;
+
+			if (mx >= _currentWidth)
+				mx = _currentWidth - 1;
+
+			if (my < 0)
+				my = 0;
+
+			if (my >= _currentHeight)
+				my = _currentHeight - 1;
+
+			if ((mx != _mouseX) || (my != _mouseY)) {
+				event.type = Common::EVENT_MOUSEMOVE;
+				event.mouse.x = _mouseX = mx;
+				event.mouse.y = _mouseY = my;
+
+				return true;
+			}
+		}
+	}
+#endif
+
+	uint32 time = getMillis();
+	if (time - _lastPadCheck > PAD_CHECK_TIME) {
+		_lastPadCheck = time;
+
+		if (abs (PAD_StickX(0)) > 16)
+			mx += PAD_StickX(0) / (4 * _overlayWidth / _currentWidth);
+		if (abs (PAD_StickY(0)) > 16)
+			my -= PAD_StickY(0) / (4 * _overlayHeight / _currentHeight);
+
+		if (mx < 0)
+			mx = 0;
+
+		if (mx >= _currentWidth)
+			mx = _currentWidth - 1;
+
+		if (my < 0)
+			my = 0;
+
+		if (my >= _currentHeight)
+			my = _currentHeight - 1;
+
+		if ((mx != _mouseX) || (my != _mouseY)) {
+			event.type = Common::EVENT_MOUSEMOVE;
+			event.mouse.x = _mouseX = mx;
+			event.mouse.y = _mouseY = my;
+
+			return true;
+		}
+	}
+
+	return false;
+}
+
diff --git a/backends/platform/wii/osystem_gfx.cpp b/backends/platform/wii/osystem_gfx.cpp
new file mode 100644
index 0000000000..1e54233c93
--- /dev/null
+++ b/backends/platform/wii/osystem_gfx.cpp
@@ -0,0 +1,453 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <malloc.h>
+
+#include "osystem.h"
+#include "gx_supp.h"
+
+#define MAX_FPS 30
+
+enum GraphicModeID {
+	GM_DEFAULT
+};
+
+void OSystem_Wii::initGfx() {
+	_surface.w = 0;
+	_surface.h = 0;
+	_surface.pitch = 0;
+	_surface.pixels = NULL;
+	_surface.bytesPerPixel = 0;
+
+	GX_InitVideo();
+
+	_overlayWidth = 640;
+	_overlayHeight = 480;
+
+	_overlaySize = _overlayWidth * _overlayHeight * 2;
+	_overlayPixels = (OverlayColor *) memalign(32, _overlaySize);
+
+	_palette = (u16 *) memalign(32, 256 * 2);
+	memset(_palette, 0, 256 * 2);
+
+	_cursorPalette = (u16 *) memalign(32, 256 * 2);
+	memset(_cursorPalette, 0, 256 * 2);
+
+	_supportedGraphicsModes = new OSystem::GraphicsMode[2];
+	_supportedGraphicsModes[0].name = strdup("gx");
+	_supportedGraphicsModes[0].description = strdup("wii hardware scaler");
+	_supportedGraphicsModes[0].id = GM_DEFAULT;
+	_supportedGraphicsModes[1].name = 0;
+	_supportedGraphicsModes[1].description = 0;
+	_supportedGraphicsModes[1].id = 0;
+
+	_texture = (u16 *) memalign(32, _overlaySize);
+
+	GX_Start(_overlayWidth, _overlayHeight, 320, 240);
+}
+
+void OSystem_Wii::deinitGfx() {
+	GX_AbortFrame();
+
+	if (_supportedGraphicsModes) {
+		delete[] _supportedGraphicsModes;
+		_supportedGraphicsModes = NULL;
+	}
+
+	if (_gamePixels) {
+		free(_gamePixels);
+		_gamePixels = NULL;
+	}
+
+	if (_palette) {
+		free(_palette);
+		_palette = NULL;
+	}
+
+	if (_overlayPixels) {
+		free(_overlayPixels);
+		_overlayPixels = NULL;
+	}
+
+	if (_mouseCursor) {
+		free(_mouseCursor);
+		_mouseCursor = NULL;
+	}
+
+	if (_cursorPalette) {
+		free(_cursorPalette);
+		_cursorPalette = NULL;
+	}
+
+	if (_texture) {
+		free(_texture);
+		_texture = NULL;
+	}
+}
+
+const OSystem::GraphicsMode* OSystem_Wii::getSupportedGraphicsModes() const {
+	return _supportedGraphicsModes;
+}
+
+int OSystem_Wii::getDefaultGraphicsMode() const {
+	return GM_DEFAULT;
+}
+
+bool OSystem_Wii::setGraphicsMode(const char *mode) {
+	setGraphicsMode(GM_DEFAULT);
+
+	return true;
+}
+
+bool OSystem_Wii::setGraphicsMode(int mode) {
+	return true;
+}
+
+int OSystem_Wii::getGraphicsMode() const {
+	return _activeGraphicsMode;
+}
+
+void OSystem_Wii::initSize(uint width, uint height) {
+	if (_gameWidth != width || _gameHeight != height) {
+		printf("initSize %u %u\n", width, height);
+
+		_gameWidth = width;
+		_gameHeight = height;
+
+		if(_gamePixels)
+			free(_gamePixels);
+
+		_gamePixels = (u8 *) memalign(32, _gameWidth * _gameHeight);
+
+		if (!_overlayVisible) {
+			_currentWidth = _gameWidth;
+			_currentHeight = _gameHeight;
+			updateEventScreenResolution();
+		}
+	}
+}
+
+int16 OSystem_Wii::getWidth() {
+	return _gameWidth;
+}
+
+int16 OSystem_Wii::getHeight() {
+	return _gameHeight;
+}
+
+void OSystem_Wii::setPalette(const byte *colors, uint start, uint num) {
+	const byte *p = colors;
+	for (uint i = 0; i < num; ++i) {
+		_palette[start + i] = RGBToColor(p[0], p[1], p[2]);
+		p += 4;
+	}
+}
+
+void OSystem_Wii::grabPalette(byte *colors, uint start, uint num) {
+	byte *p = colors;
+	u8 r, g, b;
+	for (uint i = 0; i < num; ++i) {
+		colorToRGB(_palette[start + i], r, g, b);
+		p[0] = r;
+		p[1] = g;
+		p[2] = b;
+		p[3] = 0xff;
+		p += 4;
+	}
+}
+
+void OSystem_Wii::setCursorPalette(const byte *colors, uint start, uint num) {
+	const byte *p = colors;
+	for (uint i = 0; i < num; ++i) {
+		_cursorPalette[start + i] = RGBToColor(p[0], p[1], p[2]);
+		p += 4;
+	}
+
+	_cursorPaletteDisabled = false;
+}
+
+void OSystem_Wii::disableCursorPalette(bool disable) {
+	_cursorPaletteDisabled = disable;
+}
+
+void OSystem_Wii::copyRectToScreen(const byte *buf, int pitch, int x, int y,
+									int w, int h) {
+	if (x < 0) {
+		w += x;
+		buf -= x;
+		x = 0;
+	}
+
+	if (y < 0) {
+		h += y;
+		buf -= y * pitch;
+		y = 0;
+	}
+
+	if (w > _gameWidth - x)
+		w = _gameWidth - x;
+
+	if (h > _gameHeight - y)
+		h = _gameHeight - y;
+
+	if (w <= 0 || h <= 0)
+		return;
+
+	byte *dst = _gamePixels + y * _gameWidth + x;
+	if (_gameWidth == pitch && pitch == w) {
+		memcpy(dst, buf, h * w);
+	} else {
+		do {
+			memcpy(dst, buf, w);
+			buf += pitch;
+			dst += _gameWidth;
+		} while (--h);
+	}
+}
+
+void OSystem_Wii::updateScreen() {
+	static u32 x, y, h, skip;
+	static s16 msx, msy, mox, moy, mskip;
+	static u16 mpx, mpy;
+	static u8 *s;
+	static u16 *d, *p;
+
+	u32 now = getMillis();
+	if (now - _lastScreenUpdate < 1000 / MAX_FPS)
+		return;
+
+	_lastScreenUpdate = now;
+
+	h = 0;
+	if (_overlayVisible) {
+		memcpy(_texture, _overlayPixels, _overlaySize);
+	} else {
+		for (y = 0; y < _gameHeight; ++y) {
+			for (x = 0; x < _gameWidth; ++x)
+				_texture[h + x] = _palette[_gamePixels[h + x]];
+
+			h += _gameWidth;
+		}
+	}
+
+	if (_mouseVisible) {
+		msx = _mouseX - _mouseHotspotX;
+		msy = _mouseY - _mouseHotspotY; 
+		mox = 0;
+		moy = 0;
+		mpx = _mouseWidth;
+		mpy = _mouseHeight;
+
+		if (msx < 0) {
+			mox = -msx;
+			mpx -= mox;
+			msx = 0;
+		} else
+			if (msx + mpx > _currentWidth - 1)
+				mpx = _currentWidth - msx - 1;
+
+		if (msy < 0) {
+			moy = -msy;
+			mpy -= moy;
+			msy = 0;
+		} else
+			if (msy + mpy + 1 > _currentHeight - 1)
+				mpy = _currentHeight - msy - 1;
+
+
+		if (_cursorPaletteDisabled)
+			p = _palette;
+		else
+			p = _cursorPalette;
+
+		skip = _currentWidth - mpx;
+		mskip = _mouseWidth - mpx;
+
+		s = _mouseCursor + moy * _mouseWidth + mox;
+		d = _texture + (msy * _currentWidth + msx);
+
+		for (y = 0; y < mpy; ++y) {
+			for (x = 0; x < mpx; ++x) {
+				if (*s == _mouseKeyColor) {
+					s++;
+					d++;
+
+					continue;
+				}
+
+				*d++ = p[*s];
+				s++;
+			}
+
+			d += skip;
+			s += mskip;
+		}
+	}
+
+	GX_Render(_currentWidth, _currentHeight, (u8 *) _texture,
+				_currentWidth * 2);
+}
+
+Graphics::Surface *OSystem_Wii::lockScreen() {
+	_surface.pixels = _gamePixels;
+	_surface.w = _gameWidth;
+	_surface.h = _gameHeight;
+	_surface.pitch = _gameWidth;
+	_surface.bytesPerPixel = 1;
+
+	return &_surface;
+}
+
+void OSystem_Wii::unlockScreen() {
+}
+
+void OSystem_Wii::setShakePos(int shakeOffset) {
+}
+
+void OSystem_Wii::showOverlay() {
+	_mouseX = _overlayWidth / 2;
+	_mouseY = _overlayHeight / 2;
+	_overlayVisible = true;
+	_currentWidth = _overlayWidth;
+	_currentHeight = _overlayHeight;
+
+	updateEventScreenResolution();
+}
+
+void OSystem_Wii::hideOverlay() {
+	_mouseX = _gameWidth / 2;
+	_mouseY = _gameHeight / 2;
+	_overlayVisible = false;
+	_currentWidth = _gameWidth;
+	_currentHeight = _gameHeight;
+
+	updateEventScreenResolution();
+}
+
+void OSystem_Wii::clearOverlay() {
+	memset(_overlayPixels, 0, _overlaySize);
+}
+
+void OSystem_Wii::grabOverlay(OverlayColor *buf, int pitch) {
+	int h = _overlayHeight;
+	OverlayColor *src = _overlayPixels;
+
+	do {
+		memcpy(buf, src, _overlayWidth * sizeof(OverlayColor));
+		src += _overlayWidth;
+		buf += pitch;
+	} while (--h);
+}
+
+void OSystem_Wii::copyRectToOverlay(const OverlayColor *buf, int pitch, int x,
+									int y, int w, int h) {
+	if (x < 0) {
+		w += x;
+		buf -= x;
+		x = 0;
+	}
+
+	if (y < 0) {
+		h += y;
+		buf -= y * pitch;
+		y = 0;
+	}
+
+	if (w > _overlayWidth - x)
+		w = _overlayWidth - x;
+
+	if (h > _overlayHeight - y)
+		h = _overlayHeight - y;
+
+	if (w <= 0 || h <= 0)
+		return;
+
+	OverlayColor *dst = _overlayPixels + (y * _overlayWidth + x);
+	if (_overlayWidth == pitch && pitch == w) {
+		memcpy(dst, buf, h * w * sizeof(OverlayColor));
+	} else {
+		do {
+			memcpy(dst, buf, w * sizeof(OverlayColor));
+			buf += pitch;
+			dst += _overlayWidth;
+		} while (--h);
+	}
+}
+
+int16 OSystem_Wii::getOverlayWidth() {
+	return _overlayWidth;
+}
+
+int16 OSystem_Wii::getOverlayHeight() {
+	return _overlayHeight;
+}
+
+OverlayColor OSystem_Wii::RGBToColor(uint8 r, uint8 g, uint8 b) {
+	return (((r >> 3) & 0x1f) << 11) | (((g >> 2) & 0x3f) << 5 ) |
+			((b >> 3) & 0x1f);
+}
+
+void OSystem_Wii::colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) {
+	r = ((color >> 11) & 0x1f) << 3;
+	g = ((color >> 5) & 0x3f) << 2;
+	b = (color & 0x1f) << 3;
+}
+
+OverlayColor OSystem_Wii::ARGBToColor(uint8 a, uint8 r, uint8 g, uint8 b) {
+	return RGBToColor(r, g, b);
+}
+
+void OSystem_Wii::colorToARGB(OverlayColor color, uint8 &a, uint8 &r, uint8 &g,
+								uint8 &b) {
+	a = 0xff;
+	colorToRGB(color, r, g, b);
+}
+
+bool OSystem_Wii::showMouse(bool visible) {
+	bool last = _mouseVisible;
+	_mouseVisible = visible;
+
+	return last;
+}
+
+void OSystem_Wii::warpMouse(int x, int y) {
+	_mouseX = x;
+	_mouseY = y;
+}
+
+void OSystem_Wii::setMouseCursor(const byte *buf, uint w, uint h, int hotspotX,
+									int hotspotY, byte keycolor,
+									int cursorTargetScale) {
+	(void) cursorTargetScale; // TODO
+
+	_mouseWidth = w;
+	_mouseHeight = h;
+	_mouseHotspotX = hotspotX;
+	_mouseHotspotY = hotspotY;
+	_mouseKeyColor = keycolor;
+
+	if (_mouseCursor)
+		free(_mouseCursor);
+
+	_mouseCursor = (u8 *) memalign(32, w * h);
+	memcpy(_mouseCursor, buf, w * h);
+}
+
diff --git a/backends/platform/wii/osystem_sfx.cpp b/backends/platform/wii/osystem_sfx.cpp
new file mode 100644
index 0000000000..16b2f3b055
--- /dev/null
+++ b/backends/platform/wii/osystem_sfx.cpp
@@ -0,0 +1,133 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <malloc.h>
+
+#include "osystem.h"
+
+#define SFX_THREAD_STACKSIZE (1024 * 128)
+#define SFX_THREAD_PRIO 80
+#define SFX_THREAD_FRAG_SIZE 4096
+
+static lwpq_t sfx_queue;
+static lwp_t sfx_thread;
+static u8 *sfx_stack;
+static bool sfx_thread_running = false;
+static bool sfx_thread_quit = false;
+
+static u8 sb = 0;
+static u8 *sound_buffer[2];
+
+static OSystem_Wii::SoundProc sound_proc = NULL;
+static void *proc_param = NULL;
+
+static void audio_switch_buffers() {
+	AUDIO_StopDMA();
+	AUDIO_InitDMA((u32) sound_buffer[sb], SFX_THREAD_FRAG_SIZE);
+	AUDIO_StartDMA();
+
+	LWP_ThreadSignal(sfx_queue);
+}
+
+static void * sfx_thread_func(void *arg) {
+	u8 next_sb;
+
+	while (true) {
+		LWP_ThreadSleep(sfx_queue);
+
+		if (sfx_thread_quit)
+			break;
+
+		next_sb = sb ^ 1;
+		sound_proc(proc_param, sound_buffer[next_sb], SFX_THREAD_FRAG_SIZE);
+		DCFlushRange(sound_buffer[next_sb], SFX_THREAD_FRAG_SIZE);
+
+		sb = next_sb;
+	}
+
+	return NULL;
+}
+
+void OSystem_Wii::initSfx() {
+	sfx_thread_running = false;
+	sfx_thread_quit = false;
+
+	sfx_stack = (u8 *) memalign(32, SFX_THREAD_STACKSIZE);
+	memset(sfx_stack, 0, SFX_THREAD_STACKSIZE);
+
+	LWP_InitQueue(&sfx_queue);
+
+	s32 res = LWP_CreateThread(&sfx_thread, sfx_thread_func, NULL, sfx_stack,
+								SFX_THREAD_STACKSIZE, SFX_THREAD_PRIO);
+
+	if (res) {
+		printf("ERROR creating sfx thread: %d\n", res);
+		LWP_CloseQueue(sfx_queue);
+		return;
+	}
+
+	sfx_thread_running = true;
+
+	sound_buffer[0] = (u8 *) memalign(32, SFX_THREAD_FRAG_SIZE);
+	sound_buffer[1] = (u8 *) memalign(32, SFX_THREAD_FRAG_SIZE);
+
+	memset(sound_buffer[0], 0, SFX_THREAD_FRAG_SIZE);
+	memset(sound_buffer[1], 0, SFX_THREAD_FRAG_SIZE);
+
+	DCFlushRange(sound_buffer[0], SFX_THREAD_FRAG_SIZE);
+	DCFlushRange(sound_buffer[1], SFX_THREAD_FRAG_SIZE);
+
+	sound_proc = Audio::Mixer::mixCallback;
+	proc_param = _mixer;
+
+	_mixer->setReady(true);
+
+	AUDIO_SetDSPSampleRate(AI_SAMPLERATE_48KHZ);
+	AUDIO_RegisterDMACallback(audio_switch_buffers);
+
+	audio_switch_buffers();
+}
+
+void OSystem_Wii::deinitSfx() {
+	if (_mixer)
+		_mixer->setReady(false);
+
+	AUDIO_StopDMA();
+	AUDIO_RegisterDMACallback(NULL);
+
+	if (sfx_thread_running) {
+		sfx_thread_quit = true;
+		LWP_ThreadBroadcast(sfx_queue);
+
+		LWP_JoinThread(sfx_thread, NULL);
+		LWP_CloseQueue(sfx_queue);
+
+		sfx_thread_running = false;
+
+		free(sound_buffer[0]);
+		free(sound_buffer[1]);
+	}
+}
+
+int OSystem_Wii::getOutputSampleRate() const {
+	return 48000;
+}
+