-fixed wii game and channel booting by creating a small loader for the booter, this could possibly fix other problems on game bootup as well

Makefile

@@ -2,6 +2,9 @@
 CURDIR_TMP := $(CURDIR)
 
 all:
+	@echo Make WiiFlow Loader
+	@$(MAKE) --no-print-directory -C $(CURDIR_TMP)/resources/extldr \
+			-f $(CURDIR_TMP)/resources/extldr/Makefile
 	@echo Make WiiFlow Booter
 	@$(MAKE) --no-print-directory -C $(CURDIR_TMP)/resources/wiiflow_game_booter \
 		-f $(CURDIR_TMP)/resources/wiiflow_game_booter/Makefile
@@ -10,6 +13,9 @@ all:
 	@echo Make WiiFlow Main
 	@$(MAKE) --no-print-directory -C $(CURDIR_TMP) -f $(CURDIR_TMP)/Makefile.main
 clean:
+	@echo Cleanup WiiFlow Loader
+	@$(MAKE) --no-print-directory -C $(CURDIR_TMP)/resources/extldr \
+			-f $(CURDIR_TMP)/resources/extldr/Makefile clean
 	@echo Cleanup WiiFlow Booter
 	@$(MAKE) --no-print-directory -C $(CURDIR_TMP)/resources/wiiflow_game_booter \
 			-f $(CURDIR_TMP)/resources/wiiflow_game_booter/Makefile clean

resources/extldr/Makefile

@@ -0,0 +1,50 @@
+
+PREFIX = powerpc-eabi-
+
+AR = $(PREFIX)ar
+AS = $(PREFIX)as
+CC = $(PREFIX)gcc
+CXX = $(PREFIX)g++
+LD = $(PREFIX)ld
+OBJCOPY = $(PREFIX)objcopy
+RANLIB = $(PREFIX)ranlib
+STRIP = $(PREFIX)strip
+
+MACHDEP = -mcpu=750 -mno-eabi -mhard-float
+CFLAGS = $(MACHDEP) -O1 -Werror -Wall -pipe -ffunction-sections -finline-functions-called-once -mno-sdata
+LDFLAGS = $(MACHDEP) -n -nostartfiles -nostdlib -Wl,-T,link.ld -L.
+ASFLAGS = -D_LANGUAGE_ASSEMBLY -DHW_RVL
+
+TARGET_LINKED = boot.elf
+TARGET = ../../data/extldr.bin
+
+CFILES = string.c sync.c main.c
+OBJS = crt0.o string.o sync.o main.o
+
+DEPDIR = .deps
+
+all: $(TARGET)
+
+%.o: %.s
+	@echo "$<"
+	@$(CC) $(CFLAGS) $(DEFINES) $(ASFLAGS) -c $< -o $@
+
+%.o: %.S
+	@echo "$<"
+	@$(CC) $(CFLAGS) $(DEFINES) $(ASFLAGS) -c $< -o $@
+
+%.o: %.c
+	@echo "$<"
+	@$(CC) $(CFLAGS) $(DEFINES) -c $< -o $@
+
+$(TARGET_LINKED): $(OBJS)
+	@echo "linking ... $@"
+	@$(CC) -g -o $@ $(LDFLAGS) $(OBJS) $(LIBS)
+
+$(TARGET): $(TARGET_LINKED)
+	@echo "output ... $@"
+	@$(OBJCOPY) -O binary $< $@
+
+clean:
+	@echo "clean ..."
+	@rm -rf $(TARGET_LINKED) $(TARGET) $(OBJS) $(DEPDIR)

resources/extldr/crt0.s

@@ -0,0 +1,22 @@
+# Copyright 2008-2009  Segher Boessenkool  <segher@kernel.crashing.org>
+# This code is licensed to you under the terms of the GNU GPL, version 2;
+# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
+
+.extern _main
+	.globl _start
+_start:
+
+	# Disable interrupts, enable FP.
+	mfmsr 3 ; rlwinm 3,3,0,17,15 ; ori 3,3,0x2000 ; mtmsr 3 ; isync
+
+	# Setup stack.
+	lis 1,_stack_top@ha ; addi 1,1,_stack_top@l ; li 0,0 ; stwu 0,-64(1)
+
+	# Clear BSS.
+	lis 3,__bss_start@ha ; addi 3,3,__bss_start@l
+	li 4,0
+	lis 5,__bss_end@ha ; addi 5,5,__bss_end@l ; sub 5,5,3
+	bl memset
+
+	# Go!
+	bl _main

resources/extldr/link.ld

@@ -0,0 +1,27 @@
+/* Copyright 2008-2009  Segher Boessenkool  <segher@kernel.crashing.org>
+   This code is licensed to you under the terms of the GNU GPL, version 2;
+   see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt  */
+
+OUTPUT_FORMAT("elf32-powerpc")
+OUTPUT_ARCH(powerpc:common)
+
+ENTRY(_start)
+
+SECTIONS {
+	. = 0x93300000;
+
+	.start : { crt0.o(*) }
+	.text : { *(.text) }
+	.rodata : { *(.rodata .rodata.*)}
+	.data : { *(.data) }
+
+	__bss_start = .;
+	.bss : { *(.bss) }
+	__bss_end = .;
+
+	. = ALIGN(0x40);
+	.stack : {
+		. += 0x8000;
+		_stack_top = .;
+	}
+}

resources/extldr/main.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include "string.h"
+#include "sync.h"
+typedef void (*entrypoint) (void);
+unsigned char *cfg = (unsigned char*)0x80A7FFF0;
+unsigned char *start = (unsigned char*)0x80A80000;
+unsigned char *buffer = (unsigned char*)0x90100000;
+void _main(void)
+{
+	entrypoint exeEntryPoint = (entrypoint)start;
+	memcpy(cfg, buffer, 0x01000000); //1mb safe copying of cfg and booter
+	sync_before_exec(cfg, 0x01000000);
+	exeEntryPoint();
+}

resources/extldr/string.c

@@ -0,0 +1,25 @@
+// Copyright 2008-2009  Segher Boessenkool  <segher@kernel.crashing.org>
+// This code is licensed to you under the terms of the GNU GPL, version 2;
+// see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
+
+#include <stdio.h>
+
+void *memset(void *b, int c, size_t len)
+{
+	size_t i;
+
+	for (i = 0; i < len; i++)
+		((unsigned char *)b)[i] = c;
+
+	return b;
+}
+
+void *memcpy(void *dst, const void *src, size_t len)
+{
+	size_t i;
+
+	for (i = 0; i < len; i++)
+		((unsigned char *)dst)[i] = ((unsigned char *)src)[i];
+
+	return dst;
+}

resources/extldr/string.h

@@ -0,0 +1,9 @@
+#ifndef STRING_H_
+#define STRING_H_
+
+#include <stdio.h>
+
+void *memcpy(void *dst, const void *src, size_t len);
+void *memset(void *b, int c, size_t len);
+
+#endif

resources/extldr/sync.c

@@ -0,0 +1,16 @@
+// Copyright 2008-2009  Segher Boessenkool  <segher@kernel.crashing.org>
+// This code is licensed to you under the terms of the GNU GPL, version 2;
+// see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
+
+void sync_before_exec(const void *p, unsigned int len)
+{
+	unsigned int a, b;
+
+	a = (unsigned int)p & ~0x1f;
+	b = ((unsigned int)p + len + 0x1f) & ~0x1f;
+
+	for ( ; a < b; a += 32)
+		asm("dcbst 0,%0 ; sync ; icbi 0,%0" : : "b"(a));
+
+	asm("sync ; isync");
+}

resources/extldr/sync.h

@@ -0,0 +1,6 @@
+#ifndef __SYNC_H_
+#define __SYNC_H_
+
+void sync_before_exec(const void *p, unsigned int len);
+
+#endif

resources/wiiflow_game_booter/Makefile

@@ -23,9 +23,9 @@ INCLUDES	:=	source
 #---------------------------------------------------------------------------------
 # options for code generation
 #---------------------------------------------------------------------------------
-CFLAGS		=	-g -ggdb -Ofast -Wall -Wextra $(MACHDEP) $(INCLUDE) -DHAVE_CONFIG_H
+CFLAGS		=	-g -ggdb -O1 -Wall -Wextra $(MACHDEP) $(INCLUDE) -DHAVE_CONFIG_H
 CXXFLAGS	=	$(CFLAGS)
-LDFLAGS		=	-g -ggdb $(MACHDEP) -Wl,-Map,$(notdir $@).map,--section-start,.init=0x80B00000
+LDFLAGS		=	-g -ggdb $(MACHDEP) -Wl,-Map,$(notdir $@).map,--section-start,.init=0x80A80000
 
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with the project

resources/wiiflow_game_booter/source/disc.c

@@ -258,6 +258,15 @@ void Disc_SetVMode(GXRModeObj *rmode, u32 rmode_reg)
 s32 wbfsDev = 0;
 u32 wbfs_part_idx = 0;
 FragList *frag_list = NULL;
+
+void copy_frag_list(FragList *src)
+{
+	if(src == NULL)
+		return;
+	frag_list = malloc(sizeof(FragList)); //internal copy
+	memcpy(frag_list, src, sizeof(FragList));
+}
+
 static int set_frag_list()
 {
 	// (+1 for header which is same size as fragment)

resources/wiiflow_game_booter/source/disc.h

@@ -16,6 +16,9 @@ void Disc_SetLowMemChan();
 GXRModeObj *Disc_SelectVMode(u8 videoselected, u32 *rmode_reg);
 void Disc_SetVMode(GXRModeObj *rmode, u32 rmode_reg);
 
+//just for frag copy
+void copy_frag_list(FragList *src);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

resources/wiiflow_game_booter/source/fst.c

@@ -59,8 +59,11 @@ extern const u32 wpadbuttonsdown2hooks[4];
 
 void app_gameconfig_set(u32 *gameconfig, u32 tempgameconfsize)
 {
+	if(gameconfig == NULL)
+		return;
 	gameconfsize = tempgameconfsize;
-	gameconf = gameconfig;
+	gameconf = malloc(gameconfsize); //internal copy
+	memcpy(gameconf, gameconfig, gameconfsize);
 }
 
 u8 *code_buf = NULL;
@@ -70,23 +73,24 @@ void ocarina_set_codes(void *list, u8 *listend, u8 *cheats, u32 cheatSize)
 {
 	codelist = list;
 	codelistend = listend;
-	code_buf = cheats;
-	code_size = cheatSize;
-	if(code_size <= 0)
+	if(cheatSize <= 0 || cheats == NULL)
 	{
-		//gprintf("Ocarina: No codes found\n");
+		gprintf("Ocarina: No codes found\n");
 		code_buf = NULL;
 		code_size = 0;
 		return;
 	}
-	if (code_size > (u32)codelistend - (u32)codelist)
+	if (cheatSize > (u32)codelistend - (u32)codelist)
 	{
 		gprintf("Ocarina: Too many codes found.\n");
 		code_buf = NULL;
 		code_size = 0;
 		return;
 	}
-	//gprintf("Ocarina: Codes found.\n");
+	code_size = cheatSize;
+	code_buf = malloc(code_size); //internal copy
+	memcpy(code_buf, cheats, code_size);
+	gprintf("Ocarina: Codes found.\n");
 }
 
 void app_pokevalues()
@@ -242,6 +246,8 @@ int ocarina_do_code()
 	{
 		memcpy(codelist, code_buf, code_size);
 		DCFlushRange(codelist, (u32)codelistend - (u32)codelist);
+		free(code_buf);
+		code_buf = NULL;
 	}
 
 	// TODO What's this???

resources/wiiflow_game_booter/source/main.cpp

@@ -33,6 +33,7 @@
 #include "wdvd.h"
 #include "gecko.h"
 
+#define EXT_ADDR_CFG	((vu32*)0x80A7FFF0)
 using namespace std;
 IOS_Info CurrentIOS;
 
@@ -55,7 +56,7 @@ int main()
 {
 	InitGecko();
 	gprintf("WiiFlow External Booter by FIX94\n");
-	memcpy(&normalCFG, (void*)0x93100000, sizeof(the_CFG));
+	memcpy(&normalCFG, ((void*)*EXT_ADDR_CFG), sizeof(the_CFG));
 	VIDEO_Init();
 	video_init();
 	prog10();
@@ -68,7 +69,7 @@ int main()
 	set_wip_list(normalCFG.wip_list, normalCFG.wip_count);
 	app_gameconfig_set(normalCFG.gameconf, normalCFG.gameconfsize);
 	ocarina_set_codes(normalCFG.codelist, normalCFG.codelistend, normalCFG.cheats, normalCFG.cheatSize);
-	frag_list = normalCFG.fragments;
+	copy_frag_list(normalCFG.fragments);
 	wbfsDev = normalCFG.wbfsDevice;
 	wbfs_part_idx = normalCFG.wbfsPart;
 	prog10();

resources/wiiflow_game_booter/source/wip.c

@@ -60,7 +60,7 @@ bool set_wip_list(WIP_Code *list, int size)
 {
 	if(CodeList == NULL && size > 0)
 	{
-		WIP_Code *newlist = malloc(size * sizeof(WIP_Code));
+		WIP_Code *newlist = malloc(size * sizeof(WIP_Code)); //internal copy
 		memcpy(newlist, list, size * sizeof(WIP_Code));
 		DCFlushRange(newlist, size * sizeof(WIP_Code));
 		CodeList = newlist;

source/booter/external_booter.cpp

@@ -37,9 +37,14 @@
 #include "plugin/crc32.h"
 
 /* External WiiFlow Game Booter */
-static the_CFG *BooterConfig = (the_CFG*)0x93100000;
-#define EXT_ADDR		((u8*)0x80B00000)
-#define EXT_ENTRY		((entry)EXT_ADDR)
+the_CFG normalCFG;
+#define EXT_ADDR_CFG	((vu32*)0x90100000) //later for 0x80A7FFF0
+#define EXT_ADDR		((u8*)0x90100010) //later for 0x80A80000
+#define LDR_ADDR		((u8*)0x93300000)
+#define LDR_ENTRY		((entry)LDR_ADDR)
+
+extern const u8 extldr_bin[];
+extern const u32 extldr_bin_size;
 
 extern "C" {
 u8 configbytes[2];
@@ -55,7 +60,6 @@ extern u32 *gameconf;
 
 u8 *booter_ptr = NULL;
 size_t booter_size = 0;
-the_CFG normalCFG;
 
 void WiiFlow_ExternalBooter(u8 vidMode, bool vipatch, bool countryString, u8 patchVidMode, 
 	int aspectRatio, u32 returnTo, u8 BootType, bool use_led)
@@ -81,20 +85,26 @@ void WiiFlow_ExternalBooter(u8 vidMode, bool vipatch, bool countryString, u8 pat
 	normalCFG.use_led = use_led;
 	normalCFG.wip_list = get_wip_list();
 	normalCFG.wip_count = get_wip_count();
+	/* Copy CFG Into lower MEM1 so it doesnt get destroyed */
+	DCFlushRange(&normalCFG, sizeof(the_CFG));
+	the_CFG *lowCFG = (the_CFG*)MEM1_lo_alloc(sizeof(the_CFG));
+	memcpy(lowCFG, &normalCFG, sizeof(the_CFG));
+	DCFlushRange(&lowCFG, sizeof(the_CFG));
+	*EXT_ADDR_CFG = ((u32)lowCFG);
 	/* Unmount devices etc */
 	ShutdownBeforeExit();
-	/* Copy in booter */
-	memcpy(EXT_ADDR, booter_ptr, booter_size);
-	DCFlushRange(EXT_ADDR, booter_size);
-	/* Copy CFG into new memory region */
-	memcpy(BooterConfig, &normalCFG, sizeof(the_CFG));
-	DCFlushRange(BooterConfig, sizeof(the_CFG));
 	/* Wii Games will need it */
 	net_wc24cleanup();
 	/* Set proper time */
 	settime(secs_to_ticks(time(NULL) - 946684800));
+	/* Copy in booter */
+	memcpy(EXT_ADDR, booter_ptr, booter_size);
+	DCFlushRange(EXT_ADDR, booter_size);
+	/* Loader just for the booter */
+	memcpy(LDR_ADDR, extldr_bin, extldr_bin_size);
+	DCFlushRange(LDR_ADDR, extldr_bin_size);
 	/* Boot it */
-	JumpToEntry(EXT_ENTRY);
+	JumpToEntry(LDR_ENTRY);
 }
 
 bool ExternalBooter_LoadBooter(const char *booter_path)

source/loader/frag.c

@@ -240,7 +240,7 @@ int get_frag_list(u8 *id, char *path, const u32 hdd_sector_size)
 		frag_concat(fa, fs);
 	}
 
-	frag_list = MEM2_lo_alloc(sizeof(FragList));
+	frag_list = MEM1_lo_alloc(sizeof(FragList)); //completely safe for the booter
 	if(frag_list == NULL)
 		goto out;
 
@@ -275,7 +275,7 @@ int get_frag_list(u8 *id, char *path, const u32 hdd_sector_size)
 out:
 	if(ret_val && frag_list != NULL)
 	{
-		MEM2_lo_free(frag_list);
+		MEM1_lo_free(frag_list);
 		frag_list = NULL;
 	}
 	if(fs != NULL)

source/loader/fst.c

@@ -59,7 +59,7 @@ int app_gameconfig_load(const char *discid, u8 *tempgameconf, u32 tempgameconfsi
 {
 	if (gameconf == NULL)
 	{
-		gameconf = (u32*) MEM2_alloc(65536);
+		gameconf = (u32*) MEM1_lo_alloc(65536);
 		if (gameconf == NULL)
 			return -1;
 	}
@@ -254,17 +254,25 @@ int ocarina_load_code(const u8 *cheat, u32 cheatSize)
 		codelist = (u8 *) 0x800028B8;
 	codelistend = (u8 *) 0x80003000;
 
-	code_buf = (u8 *)cheat;
-	code_size = cheatSize;
-
-	if(code_size <= 0)
+	if(cheatSize <= 0)
 	{
 		//gprintf("Ocarina: No codes found\n");
 		code_buf = NULL;
 		code_size = 0;
 		return 0;
 	}
-	//gprintf("Ocarina: Codes found.\n");
+	code_size = cheatSize;
+	code_buf = (u8*)MEM1_lo_alloc(code_size);
+	if(code_buf == NULL)
+	{
+		gprintf("Ocarina: Couldnt allocate buffer!\n");
+		code_buf = NULL;
+		code_size = 0;
+		return 0;
+	}
+	memcpy(code_buf, cheat, code_size);
+
+	gprintf("Ocarina: Codes found.\n");
 	DCFlushRange(code_buf, code_size);
 	return code_size;
 }