The-Homebrew-Cloud/SummerCart64
2
0
Fork 0
mirror of https://github.com/Polprzewodnikowy/SummerCart64.git synced 2024-11-22 05:59:15 +01:00
Code Issues Packages Projects Releases Wiki Activity

[SC64][SW][DOCS] Reduced bootloader binary size / updated readme

Browse Source
This commit is contained in:
Mateusz Faderewski 2023-01-22 18:06:17 +01:00
parent 5b85b0f661
commit aa82984472
4 changed files with 163 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
README.md
View File

@ -15,11 +15,12 @@
- Status LED and button for general use
- 64DD add-on emulation
- IS-Viewer 64 debug interface
- Software and firmware update via USB interface
- N64 bootloader with support for IPL3 registers spoofing and loading menu from SD card
- Enhanced [UltraCIC_C](https://github.com/jago85/UltraCIC_C) emulation with automatic region switching and programmable seed/checksum values
- PC app for communicating with flashcart (game/save data upload/download, feature enable control and debug terminal)
- [UNFLoader](https://github.com/buu342/N64-UNFLoader) support
- Initial board programming via UART header on board or dedicated JTAG/SWD interfaces
- Software and firmware update via USB interface
- 3D printable plastic shell
---

6
sw/bootloader/Makefile
View File

@ -57,8 +57,8 @@ $(BUILD_DIR)/%.S.o: %.S
$(BUILD_DIR)/%.c.o: %.c
$(CC) $(FLAGS) $(CFLAGS) -c $< -o $@
$(BUILD_DIR)/%.asset: $(ASSET_DIR)/%.png
$(PYTHON) tools/asset_converter.py $< $@
$(BUILD_DIR)/%.asset: $(ASSET_DIR)/%.png tools/asset_converter.py
$(PYTHON) tools/asset_converter.py $< $@ --compress
$(BUILD_DIR)/%.asset.o: $(BUILD_DIR)/%.asset $(ASSET_DIR)/assets.S
@sed -e "s,@sym@,$*,g" -e "s,@file@,$<," < $(ASSET_DIR)/assets.S | $(CC) -x assembler-with-cpp $(FLAGS) $(ASFLAGS) $(CFLAGS) -c - -o $@
@ -67,7 +67,7 @@ $(BUILD_DIR)/bootloader.elf: $(OBJS) N64.ld
$(CXX) $(FLAGS) $(LDFLAGS) -TN64.ld $(OBJS) -o $@
@$(OBJDUMP) -S $@ > $(BUILD_DIR)/bootloader.lst
$(BUILD_DIR)/bootloader.bin: $(BUILD_DIR)/bootloader.elf
$(BUILD_DIR)/bootloader.bin: $(BUILD_DIR)/bootloader.elf tools/strip.py
@$(OBJCOPY) -O binary $< $@
@chksum64 $@ > /dev/null
@$(PYTHON) tools/strip.py $@

38
sw/bootloader/src/display.c
View File

@ -60,6 +60,34 @@ static const vi_regs_t vi_config[] = {{
}};
static void display_decompress_background (uint32_t *background) {
uint32_t pixel_count = ((*background++) / sizeof(uint32_t));
uint32_t pixels_painted = 0;
uint8_t *background_data = (uint8_t *) (background);
uint32_t *framebuffer = (uint32_t *) (display_framebuffer);
while (pixels_painted < pixel_count) {
int pixel_repeat = ((background_data[0]) + 1);
uint32_t pixel_value = (
((background_data[1]) << 24) |
((background_data[2]) << 16) |
((background_data[3]) << 8) |
(background_data[4])
);
for (int i = 0; i < pixel_repeat; i++) {
io_write(framebuffer++, pixel_value);
}
pixels_painted += pixel_repeat;
background_data += 5;
}
}
static void display_clear_background (void) {
for (int i = 0; i < (SCREEN_WIDTH * SCREEN_HEIGHT); i++) {
io_write(&display_framebuffer[i], BACKGROUND_COLOR);
}
}
static void display_draw_character (char c) {
if (c == '\n') {
char_x = BORDER_WIDTH;
@ -106,14 +134,10 @@ void display_init (uint32_t *background) {
char_x = BORDER_WIDTH;
char_y = BORDER_HEIGHT;
if (background == NULL) {
for (int i = 0; i < (SCREEN_WIDTH * SCREEN_HEIGHT); i++) {
io_write(&display_framebuffer[i], BACKGROUND_COLOR);
}
if (background != NULL) {
display_decompress_background(background);
} else {
for (int i = 0; i < (SCREEN_WIDTH * SCREEN_HEIGHT); i++) {
io_write(&display_framebuffer[i], *background++);
}
display_clear_background();
}
io_write(&VI->MADDR, (uint32_t) (display_framebuffer));

39
sw/bootloader/tools/asset_converter.py
View File

@ -5,22 +5,53 @@ from PIL import Image
def compress(data: bytes, step_size: int=4) -> bytes:
uncompressed_length = len(data)
if ((uncompressed_length % step_size) != 0):
raise ValueError(f'Data length not aligned to {step_size}')
compressed_data = bytes()
compressed_data += uncompressed_length.to_bytes(4, byteorder='big')
count = 0
last_value = b''
for offset in range(0, uncompressed_length + step_size, step_size):
next_value = data[offset:(offset + step_size)]
if (offset != 0):
if ((next_value == last_value) and (count < 255)):
count += 1
else:
compressed_data += count.to_bytes(1, byteorder='big')
compressed_data += last_value
count = 0
last_value = next_value
return compressed_data
if __name__ == "__main__":
if (len(sys.argv) != 3):
print(f"Usage: python {sys.argv[0]} input_path output_path")
if (len(sys.argv) < 3):
print(f"Usage: python {sys.argv[0]} input_path output_path [--compress]")
sys.exit(1)
asset_input = sys.argv[1]
asset_output = sys.argv[2]
asset_compress = len(sys.argv) > 3 and (sys.argv[3] == '--compress')
source_asset = None
final_asset = None
try:
source_asset = Image.open(asset_input)
converted_asset = source_asset.convert("RGBA")
converted_asset = source_asset.convert("RGBA").tobytes()
if (asset_compress):
converted_asset = compress(converted_asset)
final_asset = open(asset_output, "wb")
final_asset.write(converted_asset.tobytes())
final_asset.write(converted_asset)
except FileNotFoundError:
print(f"Couldn't open file \"{asset_input}\"")
sys.exit(2)