some upstream changes, new and updated cores

README.md

@@ -37,9 +37,11 @@ on top of MinUI.
 
 - Add to Favorites
 - Clear "Recently Played"
-- Battery efficiency improvements
+- Power saving improvements
 - Performance improvements
+- Multi-core CPU support
 - Battery reading adjustments
+- Additional emulators (MAME)
 - Base and Extras are merged into one Full release
 - Native macOS installation instructions
 - Developer experience improvements
@@ -52,14 +54,15 @@ on top of MinUI.
 
 ### Build project
 
-Run `./start-toolchain.sh` and then `make all` in the Docker container shell.
+Run `./start-toolchain.sh` and then run `make all` in the Docker container shell.
 
-### TODO
+### Debug project
 
-- Improve battery capacity reading accuracy
-- Show battery percentage number overlay
-- Change boot logo
-- [...things in the old todo?...](./todo.txt)
+Create a file with the name `enableADB` on the `misc` disk to enable ADB.
+
+### Install release
+
+Update `DISK_PATH` and then run `./install-release.sh`.
 
 ## Disclaimer
 

cores/makefile

@@ -1,7 +1,7 @@
 # this logic was broken out from picoarch's all-in-one makefile
 
 CORES = fceumm gambatte gpsp pcsx_rearmed picodrive snes9x2005_plus
-CORES+= beetle-pce-fast beetle-vb mednafen_supafaust mgba pokemini # extras
+CORES+= beetle-pce-fast beetle-vb fake-08 mednafen_supafaust mgba pokemini mame2003-plus race # extras
 
 ###############################
 
@@ -19,13 +19,20 @@ beetle-pce-fast_CORE = mednafen_pce_fast_libretro.so
 beetle-vb_REPO = https://github.com/libretro/beetle-vb-libretro
 beetle-vb_CORE = mednafen_vb_libretro.so
 
+fake-08_REPO = https://github.com/jtothebell/fake-08
+fake-08_CORE = fake08_libretro.so
+fake-08_BUILD_PATH = fake-08/platform/libretro
+
 fceumm_REPO = https://github.com/libretro/libretro-fceumm
 
 gambatte_REPO = https://github.com/libretro/gambatte-libretro
 
+gpsp_HASH = 1d1c719 # last known working save states
+
 mednafen_supafaust_REPO = https://github.com/libretro/supafaust
 
 pcsx_rearmed_MAKEFILE = Makefile.libretro
+pcsx_rearmed_HASH = 672e715 # e2fb138 # last known working build
 
 picodrive_REPO = https://github.com/irixxxx/picodrive
 picodrive_MAKEFILE = Makefile.libretro
@@ -36,6 +43,9 @@ pokemini_MAKEFILE = Makefile.libretro
 snes9x2005_plus_REPO = https://github.com/libretro/snes9x2005
 snes9x2005_plus_FLAGS = USE_BLARGG_APU=1
 
+mame2003-plus_REPO = https://github.com/libretro/mame2003-plus-libretro
+mame2003-plus_CORE = mame2003_plus_libretro.so
+
 ###############################
 
 PATCH = git apply

cores/patches/fake-08.patch

@@ -0,0 +1,34 @@
+diff --git forkSrcPrefix/platform/libretro/Makefile forkDstPrefix/platform/libretro/Makefile
+index be0f1b46bb3ab10be4a9f896f5e8841dd630b35b..cc7a7249135bb690885e7f5fda09f9eb8fdeac22 100644
+--- forkSrcPrefix/platform/libretro/Makefile
++++ forkDstPrefix/platform/libretro/Makefile
+@@ -123,7 +123,16 @@ else ifeq ($(platform), miyoomini)
+    CXXFLAGS += -marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -march=armv7ve -D_NEED_FULL_PATH_
+    fpic := -fPIC
+    SHARED := -shared -Wl,--version-script=link.T
+-
++else ifeq ($(platform), rg35xx)
++   TARGET := $(TARGET_NAME)_libretro.so
++   CC = $(CROSS_COMPILE)gcc
++   CXX = $(CROSS_COMPILE)g++
++   AR = $(CROSS_COMPILE)ar
++   STRIP = $(CROSS_COMPILE)strip
++   CXXFLAGS += -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a
++   CXXFLAGS += -fomit-frame-pointer -ffast-math -fno-common -ftree-vectorize -funswitch-loops
++   fpic := -fPIC
++   SHARED := -shared -Wl,--version-script=link.T
+ else ifeq ($(platform), gcw0)
+    TARGET := $(TARGET_NAME)_libretro_gcw0.so
+    CC = /opt/gcw0-toolchain/usr/bin/mipsel-linux-gcc
+diff --git forkSrcPrefix/platform/libretro/libretro.cpp forkDstPrefix/platform/libretro/libretro.cpp
+index d95ccb6cab52abfe7620ff84dd5cbb450bafe750..24687335ad410096aa48f29e13dcb479171a06fc 100644
+--- forkSrcPrefix/platform/libretro/libretro.cpp
++++ forkDstPrefix/platform/libretro/libretro.cpp
+@@ -636,6 +636,7 @@ EXPORT bool retro_load_game(struct retro_game_info const *info)
+     else {
+         _vm->QueueCartChange(info->path);
+     }
++	_vm->UpdateAndDraw();
+ 
+     return true;
+ }

cores/patches/mame2003-plus.patch

@@ -0,0 +1,35 @@
+diff --git a/Makefile b/Makefile
+index 21129613..eaf61b92 100644
+--- a/Makefile
++++ b/Makefile
+@@ -525,6 +525,30 @@ else ifeq ($(platform), miyoo)
+ 	PLATCFLAGS += -fomit-frame-pointer -march=armv5te -mtune=arm926ej-s -ffast-math
+ 	CXXFLAGS += -fno-rtti -fno-exceptions
+
++# RG35XX
++else ifeq ($(platform), rg35xx)
++	TARGET := $(TARGET_NAME)_libretro.so
++	CC = $(CROSS_COMPILE)gcc
++	CXX = $(CROSS_COMPILE)g++
++	AR = $(CROSS_COMPILE)ar
++	fpic := -fPIC
++	LDFLAGS += $(fpic) -shared -Wl,--version-script=link.T -Wl,-no-undefined
++	CFLAGS += -Ofast \
++	-flto=4 -fwhole-program -fuse-linker-plugin \
++	-fdata-sections -ffunction-sections -Wl,--gc-sections \
++	-fno-stack-protector -fno-ident -fomit-frame-pointer \
++	-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
++	-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
++	-fmerge-all-constants -fno-math-errno \
++	-marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard
++	CXXFLAGS += $(CFLAGS)
++	CPPFLAGS += $(CFLAGS)
++	ASFLAGS += $(CFLAGS)
++	HAVE_NEON = 1
++	ARCH = arm
++	CPU_ARCH := arm
++	ARM = 1
++
+ # Emscripten
+ else ifeq ($(platform), emscripten)
+ 	TARGET := $(TARGET_NAME)_libretro_$(platform).bc

cores/patches/race.patch

@@ -0,0 +1,23 @@
+diff --git forkSrcPrefix/Makefile forkDstPrefix/Makefile
+index 792a6d82915c32edd3df6ceec541499f6ca25ac5..dc02b361d7db47e011b6d3addf89cfb31503575a 100644
+--- forkSrcPrefix/Makefile
++++ forkDstPrefix/Makefile
+@@ -373,6 +373,18 @@ else ifeq ($(platform), miyoo)
+    CFLAGS += -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s
+    CXXFLAGS += $(CFLAGS)
+    
++# RG35XX
++else ifeq ($(platform), rg35xx)
++   TARGET := $(TARGET_NAME)_libretro.so
++   CC = $(CROSS_COMPILE)gcc
++   CXX = $(CROSS_COMPILE)g++
++   AR = $(CROSS_COMPILE)ar
++   fpic := -fPIC
++   SHARED := -shared -Wl,-version-script=$(LIBRETRO_DIR)/link.T
++   PLATFORM_DEFINES := -DCC_RESAMPLER -DCC_RESAMPLER_NO_HIGHPASS
++   CFLAGS += -fomit-frame-pointer -ffast-math -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a
++   CXXFLAGS += $(CFLAGS)
++   
+ # Windows MSVC 2010 x64
+ else ifeq ($(platform), windows_msvc2010_x64)
+ 	CC  = cl.exe

install-release.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -euo pipefail
+
+DISK_PATH="/dev/disk2"
+FIRMWARE_NAME="35XX-64GB230309EN.IMG"
+RELEASE_NAME="FinUI-*-0-full.zip"
+WORKING_DIRECTORY="./releases/"
+
+echo "[*] PREPARING INSTALLATION"
+cd $WORKING_DIRECTORY
+echo
+
+echo "[*] INSTALLING FIRMWARE"
+diskutil unmountDisk $DISK_PATH
+sleep 3
+
+sudo dd bs=1m if=$FIRMWARE_NAME of=$DISK_PATH
+sleep 3
+
+sudo diskutil eraseVolume FAT32 ROMS ${DISK_PATH}s4
+sleep 3
+echo
+
+echo "[*] INSTALLING FinUI"
+unzip -o ${RELEASE_NAME[0]}
+
+cp -R dmenu.bin /Volumes/misc/
+cp -R MinUI.zip /Volumes/ROMS/
+
+cp -R Bios/ /Volumes/ROMS/Bios
+cp -R Emus/ /Volumes/ROMS/Emus
+cp -R Roms/ /Volumes/ROMS/Roms
+cp -R Saves/ /Volumes/ROMS/Saves
+cp -R Tools/ /Volumes/ROMS/Tools
+echo
+
+echo "[*] CLEANING FILES"
+dot_clean -m /Volumes/misc
+rm -fr /Volumes/misc/.fseventsd /Volumes/misc/.Spotlight-V100 /Volumes/misc/.Trashes /Volumes/misc/._.Trashes
+mkdir /Volumes/misc/.fseventsd
+touch /Volumes/misc/.fseventsd/no_log /Volumes/misc/.metadata_never_index /Volumes/misc/.Trashes
+
+dot_clean -m /Volumes/ROMS
+rm -fr /Volumes/ROMS/.fseventsd /Volumes/ROMS/.Spotlight-V100 /Volumes/ROMS/.Trashes /Volumes/ROMS/._.Trashes
+mkdir /Volumes/ROMS/.fseventsd
+touch /Volumes/ROMS/.fseventsd/no_log /Volumes/ROMS/.metadata_never_index /Volumes/ROMS/.Trashes
+echo

makefile

@@ -14,7 +14,7 @@ endif
 
 BUILD_HASH!=git rev-parse --short HEAD
 
-RELEASE_TIME!=date +%Y%m%d
+RELEASE_TIME!=TZ=GMT date +%Y%m%d
 RELEASE_BASE=FinUI-$(RELEASE_TIME)b
 RELEASE_DOT!=find ./releases/. -regex ".*/$(RELEASE_BASE)-[0-9]+-base\.zip" -printf '.' | wc -m
 RELEASE_NAME=$(RELEASE_BASE)-$(RELEASE_DOT)
@@ -26,7 +26,7 @@ endif
 
 # TODO: this needs to consider the different platforms, eg. rootfs.ext2 should only be copied in rg35xx-toolchain
 
-all: lib sys all-cores tools bundle readmes zip report
+all: lib sys all-cores tools dtb bundle readmes zip report
 
 repack: bundle readmes zip report
 
@@ -49,6 +49,9 @@ tools:
 	cd ./src/toggle_adb && make
 	cd ./other/DinguxCommander && make -j
 
+dtb:
+	cd ./src/dts/ && make
+
 bundle:
 	# ready build
 	rm -rf ./build
@@ -68,6 +71,9 @@ bundle:
 
 	# populate system
 	cp ~/buildroot/output/images/rootfs.ext2 ./build/SYSTEM/rg35xx
+	cp ./src/dts/kernel.dtb ./build/SYSTEM/rg35xx/dat
+	cp ./src/ramdisk/patched-ramdisk.img ./build/SYSTEM/rg35xx/dat/ramdisk.img
+	cp ./src/ramdisk/charging.png ./build/SYSTEM/rg35xx/dat/
 	cp ./src/libmsettings/libmsettings.so ./build/SYSTEM/rg35xx/lib
 	cp ./src/keymon/keymon.elf ./build/SYSTEM/rg35xx/bin
 	cp ./src/minarch/minarch.elf ./build/SYSTEM/rg35xx/bin
@@ -86,12 +92,16 @@ bundle:
 	cp ./cores/output/snes9x2005_plus_libretro.so ./build/SYSTEM/rg35xx/cores
 
 	# extras
+	cp ./cores/output/mame2003_plus_libretro.so ./build/EXTRAS/Emus/rg35xx/MAME.pak
+	cp ./cores/output/fake08_libretro.so ./build/EXTRAS/Emus/rg35xx/P8.pak
 	cp ./cores/output/mgba_libretro.so ./build/EXTRAS/Emus/rg35xx/MGBA.pak
 	cp ./cores/output/mgba_libretro.so ./build/EXTRAS/Emus/rg35xx/SGB.pak
 	cp ./cores/output/mednafen_pce_fast_libretro.so ./build/EXTRAS/Emus/rg35xx/PCE.pak
 	cp ./cores/output/mednafen_supafaust_libretro.so ./build/EXTRAS/Emus/rg35xx/SUPA.pak
 	cp ./cores/output/mednafen_vb_libretro.so ./build/EXTRAS/Emus/rg35xx/VB.pak
 	cp ./cores/output/pokemini_libretro.so ./build/EXTRAS/Emus/rg35xx/PKM.pak
+	cp ./cores/output/race_libretro.so ./build/EXTRAS/Emus/rg35xx/NGP.pak
+	cp ./cores/output/race_libretro.so ./build/EXTRAS/Emus/rg35xx/NGPC.pak
 	cp ./other/DinguxCommander/output/DinguxCommander ./build/EXTRAS/Tools/rg35xx/Files.pak
 	cp -R ./other/DinguxCommander/res ./build/EXTRAS/Tools/rg35xx/Files.pak/
 

skeleton/EXTRAS/Emus/rg35xx/GG.pak/default.cfg

@@ -17,4 +17,4 @@ bind Left = LEFT
 bind Right = RIGHT
 bind Button 1 = B
 bind Button 2 = A
-bind Pause = START
+bind Pause = START

skeleton/EXTRAS/Emus/rg35xx/MAME.pak/default.cfg

@@ -0,0 +1,26 @@
+minarch_cpu_speed = Performance
+minarch_prevent_tearing = Off
+
+mame2003-plus_skip_disclaimer = enabled
+mame2003-plus_skip_warnings = enabled
+-mame2003-plus_display_setup = disabled
+-mame2003-plus_input_interface = retropad
+-mame2003-plus_tate_mode = disabled
+-mame2003-plus_xy_device = disabled
+-mame2003-plus_display_artwork = disabled
+-mame2003-plus_tate_mode = disabled
+
+bind Up = UP
+bind Down = DOWN
+bind Left = LEFT
+bind Right = RIGHT
+bind Select = SELECT
+bind Start = START
+bind X Button = X
+bind Y Button = Y
+bind B Button = B
+bind A Button = A
+bind L1 Button = L1
+bind L2 Button = L2
+bind R1 Button = R1
+bind R2 Button = R2

skeleton/EXTRAS/Emus/rg35xx/MAME.pak/launch.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+EMU_EXE=mame2003_plus
+CORES_PATH=$(dirname "$0")
+
+###############################
+
+EMU_TAG=$(basename "$(dirname "$0")" .pak)
+ROM="$1"
+mkdir -p "$BIOS_PATH/$EMU_TAG"
+mkdir -p "$SAVES_PATH/$EMU_TAG"
+HOME="$USERDATA_PATH"
+cd "$HOME"
+minarch.elf "$CORES_PATH/${EMU_EXE}_libretro.so" "$ROM" DMG &> "$LOGS_PATH/$EMU_TAG.txt"

skeleton/EXTRAS/Emus/rg35xx/NGP.pak/default.cfg

@@ -0,0 +1,9 @@
+race_dark_filter_level = 50
+
+bind Up = UP
+bind Down = DOWN
+bind Left = LEFT
+bind Right = RIGHT
+bind A Button = B
+bind B Button = A
+bind Option = START

skeleton/EXTRAS/Emus/rg35xx/NGP.pak/launch.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+EMU_EXE=race
+CORES_PATH=$(dirname "$0")
+
+###############################
+
+EMU_TAG=$(basename "$(dirname "$0")" .pak)
+ROM="$1"
+mkdir -p "$BIOS_PATH/$EMU_TAG"
+mkdir -p "$SAVES_PATH/$EMU_TAG"
+HOME="$USERDATA_PATH"
+cd "$HOME"
+minarch.elf "$CORES_PATH/${EMU_EXE}_libretro.so" "$ROM" &> "$LOGS_PATH/$EMU_TAG.txt"

skeleton/EXTRAS/Emus/rg35xx/NGPC.pak/default.cfg

@@ -0,0 +1,8 @@
+
+bind Up = UP
+bind Down = DOWN
+bind Left = LEFT
+bind Right = RIGHT
+bind A Button = B
+bind B Button = A
+bind Option = START

skeleton/EXTRAS/Emus/rg35xx/NGPC.pak/launch.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+EMU_EXE=race
+CORES_PATH=$(dirname "$0")
+
+###############################
+
+EMU_TAG=$(basename "$(dirname "$0")" .pak)
+ROM="$1"
+mkdir -p "$BIOS_PATH/$EMU_TAG"
+mkdir -p "$SAVES_PATH/$EMU_TAG"
+HOME="$USERDATA_PATH"
+cd "$HOME"
+minarch.elf "$CORES_PATH/${EMU_EXE}_libretro.so" "$ROM" &> "$LOGS_PATH/$EMU_TAG.txt"

skeleton/EXTRAS/Emus/rg35xx/P8.pak/default.cfg

@@ -0,0 +1,7 @@
+bind Up = UP
+bind Down = DOWN
+bind Left = LEFT
+bind Right = RIGHT
+bind A Button = A
+bind B Button = B
+bind Start = START

skeleton/EXTRAS/Emus/rg35xx/P8.pak/launch.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+EMU_EXE=fake08
+CORES_PATH=$(dirname "$0")
+
+###############################
+
+EMU_TAG=$(basename "$(dirname "$0")" .pak)
+ROM="$1"
+mkdir -p "$BIOS_PATH/$EMU_TAG"
+mkdir -p "$SAVES_PATH/$EMU_TAG"
+HOME="$USERDATA_PATH"
+cd "$HOME"
+minarch.elf "$CORES_PATH/${EMU_EXE}_libretro.so" "$ROM" &> "$LOGS_PATH/$EMU_TAG.txt"

src/clear_recent/makefile

@@ -6,8 +6,8 @@ TARGET = clear_recent
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS   = -Os -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a -fomit-frame-pointer
-CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\"
-LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread
+CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast
+LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread -lm -lz
 
 all:
 	$(CC) $(TARGET).c ../common/utils.c ../common/api.c -o $(TARGET).elf $(CFLAGS) $(LDFLAGS)

src/clock/makefile

@@ -6,8 +6,8 @@ TARGET = clock
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS   = -Os -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a -fomit-frame-pointer
-CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\"
-LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread
+CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast
+LDFLAGS = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread -lm -lz
 
 all:
 	$(CC) $(TARGET).c ../common/utils.c ../common/api.c -o $(TARGET).elf $(CFLAGS) $(LDFLAGS)

src/common/api.c

@@ -90,6 +90,7 @@ static void ion_alloc(int fd_ion, ion_alloc_info_t* info) {
 static void ion_free(int fd_ion, ion_alloc_info_t* info) {
 	struct ion_handle_data	ihd;
 	munmap(info->vadd, info->size);
+	close(info->fd);
 	ihd.handle = (uintptr_t)info->handle;
 	if (ioctl(fd_ion, ION_IOC_FREE, &ihd)<0) fprintf(stderr, "ION_FREE failed %s\n",strerror(errno));
 	fflush(stdout);
@@ -441,7 +442,12 @@ SDL_Surface* GFX_init(int mode) {
 	font.medium = TTF_OpenFont(FONT_PATH, SCALE1(FONT_MEDIUM));
 	font.small 	= TTF_OpenFont(FONT_PATH, SCALE1(FONT_SMALL));
 	font.tiny 	= TTF_OpenFont(FONT_PATH, SCALE1(FONT_TINY));
-	
+
+	TTF_SetFontStyle(font.large, TTF_STYLE_BOLD);
+	TTF_SetFontStyle(font.medium, TTF_STYLE_BOLD);
+	TTF_SetFontStyle(font.small, TTF_STYLE_BOLD);
+	TTF_SetFontStyle(font.tiny, TTF_STYLE_BOLD);
+
 	return gfx.screen;
 }
 
@@ -688,7 +694,7 @@ void GFX_blitRect(int asset, SDL_Surface* dst, SDL_Rect* dst_rect) {
 	SDL_FillRect(dst, &(SDL_Rect){x+r,y+h-r,w-d,r}, c);
 	GFX_blitAsset(asset, &(SDL_Rect){r,r,r,r}, dst, &(SDL_Rect){x+w-r,y+h-r});
 }
-void GFX_blitClockAndBattery(SDL_Surface* dst, SDL_Rect* dst_rect) {
+void GFX_blitBattery(SDL_Surface* dst, SDL_Rect* dst_rect) {
 	// LOG_info("dst: %p\n", dst);
 	
 	if (!dst_rect) dst_rect = &(SDL_Rect){0,0,0,0};
@@ -717,19 +723,6 @@ void GFX_blitClockAndBattery(SDL_Surface* dst, SDL_Rect* dst_rect) {
 		
 		GFX_blitAsset(percent<=20?ASSET_BATTERY_FILL_LOW:ASSET_BATTERY_FILL, &clip, dst, &(SDL_Rect){x+SCALE1(3)+clip.x,y+SCALE1(2)});
 	}
-
-	// Get the current time
-	time_t currentTime = time(NULL);
-	struct tm* timeinfo = localtime(&currentTime);
-	int hours = timeinfo->tm_hour;
-	int minutes = timeinfo->tm_min;
-
-	// Convert hours and minutes to strings
-	char timeStr[6];
-	snprintf(timeStr, sizeof(timeStr), "%02d:%02d", hours, minutes);
-	SDL_Surface* text = TTF_RenderUTF8_Blended(font.large, timeStr, COLOR_WHITE);
-	SDL_BlitSurface(text, NULL, dst, &(SDL_Rect){dst_rect->x - text->w - 20, dst_rect->y + (SCALE1(PILL_SIZE) - text->h) / 2});
-	SDL_FreeSurface(text);
 }
 int GFX_getButtonWidth(char* hint, char* button) {
 	int button_width = 0;
@@ -896,7 +889,7 @@ int GFX_blitHardwareGroup(SDL_Surface* dst, int show_setting) {
 			ow,
 			SCALE1(PILL_SIZE)
 		});
-		GFX_blitClockAndBattery(dst, &(SDL_Rect){ox,oy});
+		GFX_blitBattery(dst, &(SDL_Rect){ox,oy});
 	}
 	
 	return ow;
@@ -1355,7 +1348,7 @@ static void POW_initOverlay(void) {
 	SDL_SetAlpha(gfx.assets, 0,0);
 	GFX_blitAsset(ASSET_BLACK_PILL, NULL, pow.overlay, NULL);
 	SDL_SetAlpha(gfx.assets, SDL_SRCALPHA,0);
-	GFX_blitClockAndBattery(pow.overlay, NULL);
+	GFX_blitBattery(pow.overlay, NULL);
 
 	// setup overlay
 	memset(&pow.oargs, 0, sizeof(struct owlfb_overlay_args));
@@ -1401,26 +1394,12 @@ static void POW_quitOverlay(void) {
 	ioctl(gfx.fd_fb, OWLFB_OVERLAY_DISABLE, &pow.oargs);
 }
 
-static int POW_readBatteryStatus(void) {
-	#define BATTERY_2100MAH 1
-	#define BATTERY_2600MAH 2
-	#define BATTERY_3500MAH 3
-	#define UNKNOWN 9
+int POW_readBatteryStatus(void) {
+	#define READ_VOLTAGE 1
 
-	int battery = BATTERY_2600MAH; // Default
-	int battery_txt = getInt(BATTERY_PATH);
-	if (battery_txt > 0) {
-		battery = battery_txt;
-	}
-
-	int voltage_now = getInt("/sys/class/power_supply/battery/voltage_now");
-
-	if (battery == BATTERY_2100MAH) {
+	if (READ_VOLTAGE > 0) {
+		int voltage_now = getInt("/sys/class/power_supply/battery/voltage_now");
 		return ((voltage_now / 10000) - 310); // 310-410
-	} else if (battery == BATTERY_2600MAH) {
-		return ((voltage_now / 10000) - 308); // 308-414? Seems incorrect...
-	} else if (battery == BATTERY_3500MAH) {
-		// ???-???
 	}
 
 	// Fallback
@@ -1560,22 +1539,20 @@ void POW_update(int* _dirty, int* _show_setting, POW_callback_t before_sleep, PO
 void POW_disablePowerOff(void) {
 	pow.can_poweroff = 0;
 }
-void POW_sync(char* msg) {
-	GFX_clear(gfx.screen);
-	GFX_blitMessage(font.large, msg, gfx.screen, NULL);
-	GFX_flip(gfx.screen);
-
-	system("sync");
-	system("echo s > /proc/sysrq-trigger");
-	system("echo u > /proc/sysrq-trigger");
-	system("sync");
-	
-	sleep(2);
-}
 void POW_powerOff(void) {
 	if (pow.can_poweroff) {
+		GFX_resize(FIXED_WIDTH,FIXED_HEIGHT,FIXED_PITCH);
+
 		char* msg = exists(AUTO_RESUME_PATH) ? "Quicksave created,\npowering off" : "Powering off";
-		POW_sync(msg);
+		GFX_blitMessage(font.large, msg, gfx.screen, NULL);
+		GFX_flip(gfx.screen);
+
+		system("sync");
+		system("echo s > /proc/sysrq-trigger");
+		system("echo u > /proc/sysrq-trigger");
+		system("sync");
+
+		sleep(2);
 		
 		// actual shutdown
 		system("echo o > /proc/sysrq-trigger");
@@ -1583,12 +1560,11 @@ void POW_powerOff(void) {
 }
 void POW_reboot(void) { 
 	char* msg = "Rebooting";	
-	POW_sync(msg);
 	
-	// trigger reboot
+	system("sync");
 	system("echo b > /proc/sysrq-trigger"); 
+	system("sync");
 }
-
 #define BACKLIGHT_PATH "/sys/class/backlight/backlight.2/bl_power"
 
 void POW_setCPUSpeed(int speed) {

src/common/defines.h

@@ -59,7 +59,6 @@
 #define FAVORITE_PATH USERDATA_PATH "/.minui/favorite.txt"
 #define FAUX_FAVORITE_PATH SDCARD_PATH "/Favorites"
 #define COLLECTIONS_PATH SDCARD_PATH "/Collections"
-#define BATTERY_PATH SDCARD_PATH "/battery.txt"
 #define ADB_FLAG_PATH SDCARD_PATH "/enableADB"
 #define ALIASES_PATH SDCARD_PATH "/Roms/aliases.txt"
 

src/dts/makefile

@@ -0,0 +1,4 @@
+all:
+	dtc -O dtb -o kernel.dtb kernel.dts
+clean:
+	rm -f kernel.dtb

src/install/install.sh

@@ -13,7 +13,9 @@ if [ ! -f $FLAG_PATH ]; then
 	echo "backing up"
 	BAK_PATH=$TF1_PATH/bak
 	mkdir -p $BAK_PATH
-	cp /misc/boot_logo.bmp.gz $BAK_PATH
+	cp /misc/boot_logo.bmp.gz $BAK_PATH	
+	cp /misc/kernel.dtb $BAK_PATH 
+	cp /misc/ramdisk.img $BAK_PATH
 fi
 
 was_updated() {
@@ -27,6 +29,11 @@ was_updated() {
 			continue
 		fi
 		
+		if [[ "$A_NAME" == "charging.png" ]]; then
+			# we don't care if the user has changed their charging image
+			continue
+		fi
+		
 		if [ ! -f "$B_PATH" ]; then
 			continue
 		fi
@@ -46,9 +53,13 @@ if [ ! -f $FLAG_PATH ] || was_updated; then
 	echo "updating misc partition"
 	mount -o remount,rw /dev/block/actb /misc
 	cp $SYSTEM_PATH/dat/dmenu.bin /misc
+	cp $SYSTEM_PATH/dat/kernel.dtb /misc
+	cp $SYSTEM_PATH/dat/ramdisk.img /misc
+
+	# graphics are only installed, never updated
 	if [ ! -f $FLAG_PATH ]; then
-		# only replace boot logo on install not update!
 		cp $SYSTEM_PATH/dat/boot_logo.bmp.gz /misc
+		cp $SYSTEM_PATH/dat/charging.png /misc
 	fi
 	touch $FLAG_PATH
 	sync && reboot

src/libmsettings/msettings.c

@@ -25,8 +25,8 @@ typedef struct Settings {
 } Settings;
 static Settings DefaultSettings = {
 	.version = SETTINGS_VERSION,
-	.brightness = 2,
-	.headphones = 4,
+	.brightness = 4,
+	.headphones = 8,
 	.speaker = 8,
 	.jack = 0,
 };
@@ -47,12 +47,12 @@ void InitSettings(void) {
 	
 	shm_fd = shm_open(SHM_KEY, O_RDWR | O_CREAT | O_EXCL, 0644); // see if it exists
 	if (shm_fd==-1 && errno==EEXIST) { // already exists
-		puts("Settings client");
+		// puts("Settings client");
 		shm_fd = shm_open(SHM_KEY, O_RDWR, 0644);
 		settings = mmap(NULL, shm_size, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
 	}
 	else { // host
-		puts("Settings host"); // keymon
+		// puts("Settings host"); // keymon
 		is_host = 1;
 		// we created it so set initial size and populate
 		ftruncate(shm_fd, shm_size);
@@ -72,7 +72,7 @@ void InitSettings(void) {
 		// these shouldn't be persisted
 		// settings->jack = 0;
 	}
-	printf("brightness: %i\nspeaker: %i \n", settings->brightness, settings->speaker);
+	printf("brightness: %i\nspeaker: %i \nheadphones: %i \n", settings->brightness, settings->speaker, settings->headphones);
 	
 	SetVolume(GetVolume());
 	SetBrightness(GetBrightness());

src/minarch/makefile

@@ -6,8 +6,9 @@ TARGET = minarch
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS   = -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a -fomit-frame-pointer
-CFLAGS  += -I. -I../common -I./libretro-common/include -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast 
-LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread -lz
+CFLAGS  += -I. -I../common -I./libretro-common/include -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast  -std=gnu99
+CFLAGS	+= -Os -flto
+LDFLAGS = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread -lm -lz
 # CFLAGS  += -Wall -Wno-unused-variable -Wno-unused-function -Wno-format-overflow
 # CFLAGS  += -fsanitize=address -fno-common
 # LDFLAGS += -lasan
@@ -19,4 +20,4 @@ CFLAGS += -DBUILD_DATE=\"${BUILD_DATE}\" -DBUILD_HASH=\"${BUILD_HASH}\"
 all:
 	$(CC) $(TARGET).c ../common/scaler_neon.c ../common/utils.c ../common/api.c -o $(TARGET).elf $(CFLAGS) $(LDFLAGS)
 clean:
-	rm -f $(TARGET).elf
+	rm -f $(TARGET).elf

src/minarch/minarch.c

@@ -47,7 +47,6 @@ enum {
 // default frontend options
 static int screen_scaling = SCALE_ASPECT; // aspect
 static int show_scanlines = 0;
-static int optimize_text = 0;
 static int prevent_tearing = 1; // lenient
 static int show_debug = 0;
 static int max_ff_speed = 3; // 4x
@@ -435,6 +434,55 @@ static void SRAM_write(void) {
 
 ///////////////////////////////////////
 
+static void RTC_getPath(char* filename) {
+	sprintf(filename, "%s/%s.rtc", core.saves_dir, game.name);
+}
+static void RTC_read(void) {
+	size_t rtc_size = core.get_memory_size(RETRO_MEMORY_RTC);
+	if (!rtc_size) return;
+
+	char filename[MAX_PATH];
+	RTC_getPath(filename);
+	printf("rtc path (read): %s\n", filename);
+
+	FILE *rtc_file = fopen(filename, "r");
+	if (!rtc_file) return;
+
+	void* rtc = core.get_memory_data(RETRO_MEMORY_RTC);
+
+	if (!rtc || !fread(rtc, 1, rtc_size, rtc_file)) {
+		LOG_error("Error reading RTC data\n");
+	}
+
+	fclose(rtc_file);
+}
+static void RTC_write(void) {
+	size_t rtc_size = core.get_memory_size(RETRO_MEMORY_RTC);
+	if (!rtc_size) return;
+
+	char filename[MAX_PATH];
+	RTC_getPath(filename);
+	printf("rtc path (write) size(%u): %s\n", rtc_size, filename);
+
+	FILE *rtc_file = fopen(filename, "w");
+	if (!rtc_file) {
+		LOG_error("Error opening RTC file: %s\n", strerror(errno));
+		return;
+	}
+
+	void *rtc = core.get_memory_data(RETRO_MEMORY_RTC);
+
+	if (!rtc || rtc_size != fwrite(rtc, 1, rtc_size, rtc_file)) {
+		LOG_error("Error writing RTC data to file\n");
+	}
+
+	fclose(rtc_file);
+
+	sync();
+}
+
+///////////////////////////////////////
+
 static void Downsample(void* __restrict src, void* __restrict dst, uint32_t w, uint32_t h, uint32_t pitch, uint32_t dst_pitch) {
 	uint32_t ox = 0;
 	uint32_t oy = 0;
@@ -461,6 +509,9 @@ static void State_read(void) { // from picoarch
 	size_t state_size = core.serialize_size();
 	if (!state_size) return;
 
+	int was_ff = fast_forward;
+	fast_forward = 0;
+	
 	void *state = calloc(1, state_size);
 	if (!state) {
 		LOG_error("Couldn't allocate memory for state\n");
@@ -478,7 +529,9 @@ static void State_read(void) { // from picoarch
 		goto error;
 	}
 
-	if (state_size != fread(state, 1, state_size, state_file)) {
+	// some cores report the wrong serialize size initially for some games, eg. mgba: Wario Land 4
+	// so we allow a size mismatch as long as the actual size fits in the buffer we've allocated
+	if (state_size < fread(state, 1, state_size, state_file)) {
 		LOG_error("Error reading state data from file: %s (%s)\n", filename, strerror(errno));
 		goto error;
 	}
@@ -491,11 +544,16 @@ static void State_read(void) { // from picoarch
 error:
 	if (state) free(state);
 	if (state_file) fclose(state_file);
+	
+	fast_forward = was_ff;
 }
 static void State_write(void) { // from picoarch
 	size_t state_size = core.serialize_size();
 	if (!state_size) return;
-
+	
+	int was_ff = fast_forward;
+	fast_forward = 0;
+	
 	void *state = calloc(1, state_size);
 	if (!state) {
 		LOG_error("Couldn't allocate memory for state\n");
@@ -526,6 +584,8 @@ error:
 	if (state_file) fclose(state_file);
 
 	sync();
+	
+	fast_forward = was_ff;
 }
 static void State_autosave(void) {
 	int last_state_slot = state_slot;
@@ -610,7 +670,6 @@ static char* max_ff_labels[] = {
 enum {
 	FE_OPT_SCALING,
 	FE_OPT_SCANLINES,
-	FE_OPT_TEXT,
 	FE_OPT_TEARING,
 	FE_OPT_OVERCLOCK,
 	FE_OPT_DEBUG,
@@ -797,16 +856,6 @@ static struct Config {
 				.values = onoff_labels,
 				.labels = onoff_labels,
 			},
-			[FE_OPT_TEXT] = {
-				.key	= "minarch_optimize_text", 
-				.name	= "Optimize Text",
-				.desc	= "Prioritize a consistent stroke width when upscaling single\npixel lines using nearest neighbor scaler. Increases CPU load.\nOnly applies to native scaling.",
-				.default_value = 0,
-				.value = 0,
-				.count = 2,
-				.values = onoff_labels,
-				.labels = onoff_labels,
-			},
 			[FE_OPT_TEARING] = {
 				.key	= "minarch_prevent_tearing",
 				.name	= "Prevent Tearing",
@@ -900,7 +949,6 @@ static void Config_syncFrontend(int i, int value) {
 	switch (i) {
 		case FE_OPT_SCALING:	screen_scaling 	= value; renderer.src_w = 0; break;
 		case FE_OPT_SCANLINES:	show_scanlines 	= value; renderer.src_w = 0; break;
-		case FE_OPT_TEXT:		optimize_text 	= value; renderer.src_w = 0; break;
 		case FE_OPT_TEARING:	prevent_tearing = value; break;
 		case FE_OPT_OVERCLOCK:	overclock		= value; break;
 		case FE_OPT_DEBUG:		show_debug 		= value; break;
@@ -2355,125 +2403,6 @@ static void scaleNN_scanline(void* __restrict src, void* __restrict dst, uint32_
 		row += 1;
 	}
 }
-static void scaleNN_text(void* __restrict src, void* __restrict dst, uint32_t w, uint32_t h, uint32_t pitch, uint32_t dst_pitch) {
-	int dy = -renderer.dst_h;
-	unsigned lines = h;
-	bool copy = false;
-
-	size_t cpy_w = renderer.dst_w * FIXED_BPP;
-	int screen_p = screen->pitch;
-		
-	int safe = w - 1; // don't look behind when there's nothing to see
-	uint16_t l1,l2;
-	while (lines) {
-		int dx = -renderer.dst_w;
-		const uint16_t *psrc16 = src;
-		uint16_t *pdst16 = dst;
-		l1 = l2 = 0x0;
-		
-		if (copy) {
-			copy = false;
-			memcpy(dst, dst - screen_p, cpy_w);
-			dst += screen_p;
-			dy += h;
-		} else if (dy < 0) {
-			int col = w;
-			while(col--) {
-				int d = 0;
-				if (col<safe && l1!=l2) {
-					// https://stackoverflow.com/a/71086522/145965
-					uint16_t r = (l1 >> 10) & 0x3E;
-					uint16_t g = (l1 >> 5) & 0x3F;
-					uint16_t b = (l1 << 1) & 0x3E;
-					uint16_t luma = (r * 218) + (g * 732) + (b * 74);
-					luma = (luma >> 10) + ((luma >> 9) & 1); // 0-63
-					d = luma > 24;
-				}
-
-				uint16_t s = *psrc16;
-				
-				while (dx < 0) {
-					*pdst16++ = d ? l1 : s;
-					dx += w;
-
-					l2 = l1;
-					l1 = s;
-					d = 0;
-				}
-
-				dx -= renderer.dst_w;
-				psrc16++;
-			}
-
-			dst += screen_p;
-			dy += h;
-		}
-
-		if (dy >= 0) {
-			dy -= renderer.dst_h;
-			src += pitch;
-			lines--;
-		} else {
-			copy = true;
-		}
-	}
-}
-static void scaleNN_text_scanline(void* __restrict src, void* __restrict dst, uint32_t w, uint32_t h, uint32_t pitch, uint32_t dst_pitch) {
-	int dy = -renderer.dst_h;
-	unsigned lines = h;
-
-	int row = 0;
-	int safe = w - 1; // don't look behind when there's nothing to see
-	uint16_t l1,l2;
-	while (lines) {
-		int dx = -renderer.dst_w;
-		const uint16_t *psrc16 = src;
-		uint16_t *pdst16 = dst;
-		l1 = l2 = 0x0;
-		
-		if (row%2==0) {
-			int col = w;
-			while(col--) {
-				int d = 0;
-				if (col<safe && l1!=l2) {
-					// https://stackoverflow.com/a/71086522/145965
-					uint16_t r = (l1 >> 10) & 0x3E;
-					uint16_t g = (l1 >> 5) & 0x3F;
-					uint16_t b = (l1 << 1) & 0x3E;
-					uint16_t luma = (r * 218) + (g * 732) + (b * 74);
-					luma = (luma >> 10) + ((luma >> 9) & 1); // 0-63
-					d = luma > 24;
-				}
-
-				uint16_t s = *psrc16;
-				
-				while (dx < 0) {
-					*pdst16 = *(pdst16 + dst_pitch) = d ? l1 : s;
-					pdst16 += 1;
-					
-					dx += w;
-
-					l2 = l1;
-					l1 = s;
-					d = 0;
-				}
-
-				dx -= renderer.dst_w;
-				psrc16 += 1;
-			}
-		}
-
-		dst += dst_pitch;
-		dy += h;
-				
-		if (dy >= 0) {
-			dy -= renderer.dst_h;
-			src += pitch;
-			lines--;
-		}
-		row += 1;
-	}
-}
 
 static SDL_Surface* scaler_surface;
 static void selectScaler_PAR(int width, int height, int pitch) {
@@ -2588,8 +2517,8 @@ static void selectScaler_PAR(int width, int height, int pitch) {
 	renderer.dst_offset = (oy * device_pitch) + (ox * FIXED_BPP);
 
 	if (use_nearest) 
-		if (show_scanlines) renderer.scaler = optimize_text ? scaleNN_text_scanline : scaleNN_scanline;
-		else renderer.scaler = optimize_text ? scaleNN_text : scaleNN;
+		if (show_scanlines) renderer.scaler = scaleNN_scanline;
+		else renderer.scaler = scaleNN;
 	else {
 		sprintf(scaler_name, "%iX", scale);
 		if (show_scanlines) {
@@ -2646,7 +2575,7 @@ static void selectScaler_AR(int width, int height, int pitch) {
 	
 	// if (scale>6) scale = 6;
 	// else
-	if (scale>2) scale = 4; // TODO: pillar/letterboxing at 3x produces vertical banding (some kind of alignment issue?)
+	if (scale>2) scale = 2; // TODO: pillar/letterboxing at 3x produces vertical banding (some kind of alignment issue?)
 
 	// reduce scale if we don't have enough memory to accomodate it
 	// scaled width and height can't be greater than our fixed page width or height
@@ -2942,11 +2871,13 @@ void Core_load(void) {
 	core.load_game(&game_info);
 	
 	SRAM_read();
+	RTC_read();
 	
 	// NOTE: must be called after core.load_game!
 	struct retro_system_av_info av_info = {};
-	core.get_system_av_info(&av_info);
-	
+	core.get_system_av_info(&av_info);	
+	// FIX: some cores need configure a default controller.
+	core.set_controller_port_device(0, 1);
 	core.fps = av_info.timing.fps;
 	core.sample_rate = av_info.timing.sample_rate;
 	double a = av_info.geometry.aspect_ratio;
@@ -2964,6 +2895,7 @@ void Core_unload(void) {
 void Core_quit(void) {
 	if (core.initialized) {
 		SRAM_write();
+		RTC_write();
 		core.unload_game();
 		core.deinit();
 		core.initialized = 0;
@@ -3057,6 +2989,7 @@ void Menu_quit(void) {
 }
 void Menu_beforeSleep(void) {
 	SRAM_write();
+	RTC_write();
 	State_autosave();
 	putFile(AUTO_RESUME_PATH, game.path + strlen(SDCARD_PATH));
 	POW_setCPUSpeed(CPU_SPEED_MENU);
@@ -3856,6 +3789,7 @@ static void Menu_loop(void) {
 	}
 	
 	SRAM_write();
+	RTC_write();
 	POW_warn(0);
 	POW_setCPUSpeed(CPU_SPEED_MENU); // set Hz directly
 	GFX_setVsync(VSYNC_STRICT);
@@ -3863,7 +3797,6 @@ static void Menu_loop(void) {
 	int rumble_strength = VIB_getStrength();
 	VIB_setStrength(0);
 	
-	fast_forward = 0;
 	POW_enableAutosleep();
 	PAD_reset();
 	
@@ -4312,19 +4245,23 @@ static void trackFPS(void) {
 }
 
 static void limitFF(void) {
+	static uint64_t ff_frame_time = 0;
 	static uint64_t last_time = 0;
-	const uint64_t now = getMicroseconds();
+	static int last_max_speed = -1;
 
+	if (last_max_speed!=max_ff_speed) {
+		last_max_speed = max_ff_speed;
+		ff_frame_time = 1000000 / (core.fps * (max_ff_speed + 1));
+	}
+
+	uint64_t now = getMicroseconds();
 	if (fast_forward && max_ff_speed) {
 		if (last_time == 0) last_time = now;
 		int elapsed = now - last_time;
 		if (elapsed>0 && elapsed<0x80000) {
-			uint64_t ff_frame_time = 1000000 / (core.fps * (max_ff_speed + 1)); // TODO: define this only when max_ff_speed changes
 			if (elapsed<ff_frame_time) {
 				int delay = (ff_frame_time - elapsed) / 1000;
-				if (delay>0) {
-					// TODO: huh, this isn't causing the Tekken 3 hangs...
-					// printf("limitFF delay: %i\n", delay); fflush(stdout);
+				if (delay>0 && delay<17) { // don't allow a delay any greater than a frame
 					SDL_Delay(delay);
 				}
 			}

src/minui/makefile

@@ -6,8 +6,8 @@ TARGET = minui
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS   = -Os -marm -mtune=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard -march=armv7-a -fomit-frame-pointer
-CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\"
-LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread
+CFLAGS  += -I. -I../common -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast -std=gnu99
+LDFLAGS = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread -lm -lz
 # CFLAGS  += -fsanitize=address -fno-common
 # LDFLAGS += -lasan
 

src/minui/minui.c

@@ -283,7 +283,7 @@ static Directory* Directory_new(char* path, int selected) {
 	else if (exactMatch(path, FAUX_FAVORITE_PATH)) {
 		self->entries = getFavorites();
 	}
-	else if (!exactMatch(path, COLLECTIONS_PATH) && prefixMatch(COLLECTIONS_PATH, path)) {
+	else if (!exactMatch(path, COLLECTIONS_PATH) && prefixMatch(COLLECTIONS_PATH, path) && suffixMatch(".txt", path)) {
 		self->entries = getCollection(path);
 	}
 	else if (suffixMatch(".m3u", path)) {

src/ramdisk/patched-ramdisk.meta

@@ -0,0 +1,3 @@
+patched version of ramdisk.img 
+from the official stock TF1 image 
+released on or around 2023-03-09

src/ramdisk/readme.txt

@@ -0,0 +1,35 @@
+can't just hexedit a ramdisk.img because of the internal CRC checksum
+
+make sure we have mkimage
+
+	apt update && apt install u-boot-tools 
+
+(the following steps are slow if performed in the shared workspace folder, 
+move ramdisk.img somewhere above that directory to do the work, eg. ~)
+
+strip the header from ramdisk.img
+
+	dd bs=1 skip=64 if=ramdisk.img of=ramdisk-no-header.img
+
+unpack the image
+
+	mkdir ramdisk && cd ramdisk
+	cpio -i --no-absolute-filenames < ../ramdisk-no-header.img
+
+patch charger to use /misc/charging.png for _every_ charging image :sweat_smile:
+
+	sed -i 's,/res/images/%s.png,/misc/charging.png,' charger
+
+pack it up and recreate the image
+
+	shopt -s dotglob
+	find . | cpio -H newc -o > ../ramdisk.cpio
+	mkimage -A arm -O linux -T ramdisk -n "Initial RAM Disk" -d ../ramdisk.cpio ../ramdisk.img.new
+
+based on
+
+	https://boundarydevices.com/hacking-ram-disks/
+
+---
+
+if I decide to use this will need to copy charging.png and patched-ramdisk.img (as ramdisk.img) to /.system/rg35xx/dat