[Firmware] Cheats | APU enhancement | BSRAM save/load - PAL - 1:1/8:7 aspect ratio support

firmware/build.sh

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+#!/bin/bash
+
+# This compiles the firmware into firmware.bin in RV32I format.
+# It is to be loaded at address 0.
+
+# Set the path to the RISC-V gcc toolchain for x64
+CROSS=/opt/xpack-riscv-none-elf-gcc-13.2.0-2/bin/riscv-none-elf
+CFLAGS="-O -mabi=ilp32 -march=rv32i -ffreestanding"
+
+$CROSS-as -mabi=ilp32 -march=rv32i -c -o start.o start.S
+$CROSS-gcc $CFLAGS -c -o firmware.o firmware.c
+$CROSS-gcc $CFLAGS -c -o picorv32.o picorv32.c
+$CROSS-gcc $CFLAGS -c -o spi_sd.o spi_sd.c
+$CROSS-gcc $CFLAGS -c -o spiflash.o spiflash.c
+
+# fatfs
+$CROSS-gcc $CFLAGS -c -o fatfs/diskio.o fatfs/diskio.c
+$CROSS-gcc $CFLAGS -c -o fatfs/ff.o fatfs/ff.c
+$CROSS-gcc $CFLAGS -c -o fatfs/ffunicode.o fatfs/ffunicode.c
+
+$CROSS-gcc $CFLAGS -Wl,--build-id=none,-Bstatic,-T,baremetal.ld,--strip-debug \
+   -nostdlib -o firmware.elf start.o firmware.o picorv32.o spiflash.o spi_sd.o \
+   fatfs/diskio.o fatfs/ff.o fatfs/ffunicode.o -lgcc
+
+$CROSS-objcopy firmware.elf firmware.bin -O binary
+# python bin2hexwords.py firmware.bin firmware.hex
+
+$CROSS-objdump -Mnumeric -D firmware.elf > firmware.elf.list

firmware/clean.sh

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+#!/bin/bash
+
+rm -f *.bin *.elf *.list *.o *.hex fatfs/*.o