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Updated libdragon (now incorporating open source IPL3)

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This commit is contained in:
Mateusz Faderewski 2023-12-07 18:20:49 +01:00
parent 8e50e4c1e1
commit cceb37e694
3 changed files with 4 additions and 65 deletions
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10
Makefile
View File

@ -96,23 +96,19 @@ $(@info $(shell mkdir -p ./$(OUTPUT_DIR) &> /dev/null))
$(OUTPUT_DIR)/$(PROJECT_NAME).n64: $(PROJECT_NAME).z64
@mv $< $@
$(BUILD_DIR)/$(PROJECT_NAME)_stripped.n64: $(OUTPUT_DIR)/$(PROJECT_NAME).n64
python3 ./tools/strip_debug_data.py $(BUILD_DIR)/$(PROJECT_NAME).elf $< $@
@$(N64_CHKSUM) $@ > /dev/null
64drive: $(OUTPUT_DIR)/$(PROJECT_NAME).n64
@cp $< $(OUTPUT_DIR)/menu.bin
.PHONY: 64drive
ed64: $(BUILD_DIR)/$(PROJECT_NAME)_stripped.n64
ed64: $(OUTPUT_DIR)/$(PROJECT_NAME).n64
@cp $< $(OUTPUT_DIR)/OS64.v64
.PHONY: ed64
ed64-clone: $(BUILD_DIR)/$(PROJECT_NAME)_stripped.n64
ed64-clone: $(OUTPUT_DIR)/$(PROJECT_NAME).n64
@cp $< $(OUTPUT_DIR)/OS64P.v64
.PHONY: ed64-clone
sc64: $(BUILD_DIR)/$(PROJECT_NAME)_stripped.n64
sc64: $(OUTPUT_DIR)/$(PROJECT_NAME).n64
@cp $< $(OUTPUT_DIR)/sc64menu.n64
.PHONY: sc64

1
src/boot/cic.c
View File

@ -67,6 +67,7 @@ static uint64_t cic_calculate_ipl3_checksum (uint8_t *ipl3, uint8_t seed) {
}
next = _get(ipl3, i);
buf[10] = _sum(_add(buf[10], data), next, i);
buf[11] = _sum(buf[11] ^ data, next, i);
buf[12] = _add(buf[12], buf[8] ^ data);

58
tools/strip_debug_data.py
View File

@ -1,58 +0,0 @@
#!/usr/bin/env python3
import sys
from subprocess import Popen, PIPE
def get_symbol_address(elf, symbol):
p1 = Popen(f'readelf -s --wide {elf}'.split(), stdout=PIPE)
p2 = Popen(f'grep -m 1 {symbol}'.split(), stdin=p1.stdout, stdout=PIPE)
stdout, _ = p2.communicate()
symbol_data = stdout.decode('UTF-8').split()
address = symbol_data[1]
name = symbol_data[7]
if (symbol != name):
raise Exception(f'Inexact symbol name found [{symbol} != {name}]')
return int(address, 16)
def get_rom_data_end_offset(elf):
ROM_ENTRY_OFFSET = 0x1000
libdragon_text_start = get_symbol_address(elf, '__libdragon_text_start')
rom_end = get_symbol_address(elf, '__rom_end')
return ROM_ENTRY_OFFSET + (rom_end - libdragon_text_start)
if __name__ == '__main__':
if (len(sys.argv) != 4):
print(f'Usage: python {sys.argv[0]} elf input output')
sys.exit(1)
elf_file = sys.argv[1]
input_file = sys.argv[2]
output_file = sys.argv[3]
ALIGN = 512
try:
length = get_rom_data_end_offset(elf_file)
except Exception as e:
print(e)
sys.exit(2)
stripped_data = b''
with open(input_file, 'rb') as f:
stripped_data = f.read(length)
modulo = (length % ALIGN)
if (modulo > 0):
stripped_data += b'\x00' * (ALIGN - modulo)
with open(output_file, 'wb') as f:
f.write(stripped_data)