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build: Add python shebang to elf scripts #7

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build: Add python shebang to elf scripts #7

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8 changes: 4 additions & 4 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -75,14 +75,14 @@ target_link_libraries(${OUTPUT_NAME} PRIVATE c arith64 freertos_kernel pc xbox t

# Create a binary from the elf
add_custom_command(TARGET ${OUTPUT_NAME} POST_BUILD
COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/scripts/calculate_usage.py ${CMAKE_BINARY_DIR}/${OUTPUT_NAME}
COMMAND ${CMAKE_CURRENT_LIST_DIR}/scripts/calculate_usage.py ${CMAKE_BINARY_DIR}/${OUTPUT_NAME}

# Copy the original elf for debugging
COMMAND cp ${CMAKE_BINARY_DIR}/${OUTPUT_NAME} ${CMAKE_BINARY_DIR}/original.elf

COMMAND echo "Compressing ROM..."
COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/scripts/compress_rom.py
${CMAKE_BINARY_DIR}/${OUTPUT_NAME} ${CMAKE_BINARY_DIR}/compressed.bin
COMMAND ${CMAKE_CURRENT_LIST_DIR}/scripts/compress_rom.py
${CMAKE_BINARY_DIR}/${OUTPUT_NAME} ${CMAKE_BINARY_DIR}/compressed.bin

# Push the compressed blob back into the elf
COMMAND ${CMAKE_OBJCOPY} --update-section .compressed=${CMAKE_BINARY_DIR}/compressed.bin ${OUTPUT_NAME}
Expand All @@ -91,7 +91,7 @@ add_custom_command(TARGET ${OUTPUT_NAME} POST_BUILD
COMMAND ${CMAKE_OBJCOPY} --remove-section=.text --remove-section=.data --remove-section=.rodata ${OUTPUT_NAME}

# Calculate the final size ROM usage
COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/scripts/calculate_usage.py ${CMAKE_BINARY_DIR}/${OUTPUT_NAME}
COMMAND ${CMAKE_CURRENT_LIST_DIR}/scripts/calculate_usage.py ${CMAKE_BINARY_DIR}/${OUTPUT_NAME}

# Convert the elf to a binary 0x100000000 is 256kB from ROM base which makes 256Kb output size
COMMAND ${CMAKE_OBJCOPY} -O binary --pad-to 0x100000000 --gap-fill 0xFF ${OUTPUT_NAME} ${CMAKE_BINARY_DIR}/rom.bin
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2 changes: 2 additions & 0 deletions scripts/calculate_usage.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
#!/usr/bin/env python3

import argparse
from elftools.elf.elffile import ELFFile

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2 changes: 2 additions & 0 deletions scripts/compress_rom.py
100644 → 100755
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@@ -1,3 +1,5 @@
#!/usr/bin/env python3

from elftools.elf.elffile import ELFFile
import lz4.block
import struct
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