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Add support for OpenBLT Bootloader. #7204

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Add support for OpenBLT Bootloader. #7204

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8fe0d35
Add support for OpenBLT Bootloader.
matt-alencar Feb 22, 2026
ecfeb45
Automate the process of build .srec file, and added print-openblt-vec…
matt-alencar Feb 25, 2026
947a3f7
Merge branch 'Klipper3d:master' into arm-support-for-openblt
matt-alencar Apr 15, 2026
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3 changes: 2 additions & 1 deletion scripts/buildcommands.py
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Original file line number Diff line number Diff line change
Expand Up @@ -222,14 +222,15 @@ def generate_code(self, options):
# The ResetHandler was not defined - don't build VectorTable
return ""
max_irq = max(self.irqs.keys())
table = [" DefaultHandler,\n"] * (max_irq + armcm_offset + 1)
table = [" DefaultHandler,\n"] * (max_irq + armcm_offset + 2)
defs = []
for num, func in self.irqs.items():
if num < 1 - armcm_offset:
error("Invalid IRQ %d (%s)" % (num, func))
defs.append("extern void %s(void);\n" % (func,))
table[num + armcm_offset] = " %s,\n" % (func,)
table[0] = " &_stack_end,\n"
table[-1] = " (void*)0x55AA11EE,\n"
fmt = """
extern void DefaultHandler(void);
extern uint32_t _stack_end;
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14 changes: 14 additions & 0 deletions src/stm32/Makefile
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Expand Up @@ -92,11 +92,25 @@ src-$(CONFIG_HAVE_GPIO_SDIO) += stm32/sdio.c

# Binary output file rules
target-y += $(OUT)klipper.bin
target-y += $(OUT)klipper.srec

$(OUT)klipper.bin: $(OUT)klipper.elf
@echo " Creating bin file $@"
$(Q)$(OBJCOPY) -O binary $< $@

$(OUT)klipper.srec: $(OUT)klipper.bin
@echo " Creating srec file $@"
$(Q)$(OBJCOPY) -I binary -O srec --change-addresses "$(CONFIG_FLASH_APPLICATION_ADDRESS)" $< $@

# Print OpenBLT BOOT_FLASH_VECTOR_TABLE_CS_OFFSET
print-openblt-vector-table-cs-offset:
@addr=`$(OBJDUMP) -s -j .text $(OUT)klipper.elf | grep ee11aa55 | awk '{print $$1}'`; \
if [ -z "$$addr" ]; then \
echo "Pattern not found"; \
exit 1; \
fi; \
printf "BOOT_FLASH_VECTOR_TABLE_CS_OFFSET: 0x%X\n" $$((0x$$addr - $(CONFIG_FLASH_APPLICATION_ADDRESS)))

# Flash rules
lib/hidflash/hid-flash:
@echo " Building hid-flash"
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