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28 lines
1.1 KiB
Makefile
28 lines
1.1 KiB
Makefile
# Indicate the reserved space for a header, 256B by default.
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# The value must respect the cpu alignment requirements for the specific
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# cpu, it can be re-defined in the cpu Makefile.include accordingly.
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# e.g: `cortex-m` vector-table comes after `riotboot_hdr` and must be naturally
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# aligned according to CPU_IRQ_NUMOF (ref: cpu/cortexm_common/Makefile.include)
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RIOTBOOT_HDR_LEN ?= 0x100
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# Currently 2 slots are supported by default, equals in length
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NUM_SLOTS ?= 2
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# Take the whole flash minus RIOTBOOT_LEN and divide it by NUM_SLOTS
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SLOT0_LEN ?= $(shell printf "0x%x" $$((($(ROM_LEN:%K=%*1024)-$(RIOTBOOT_LEN)) / $(NUM_SLOTS))))
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SLOT1_LEN ?= $(SLOT0_LEN)
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SLOT0_LEN := $(SLOT0_LEN)
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SLOT1_LEN := $(SLOT1_LEN)
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# By default, slot 0 is found just after RIOTBOOT_LEN. Slot 1 after
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# slot 0. The values might be overridden to add more or less offset
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# if needed.
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SLOT0_OFFSET ?= $(RIOTBOOT_LEN)
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SLOT1_OFFSET ?= $(shell printf "0x%x" $$(($(SLOT0_OFFSET) + $(SLOT0_LEN))))
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CFLAGS += -DSLOT0_LEN=$(SLOT0_LEN)
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CFLAGS += -DSLOT0_OFFSET=$(SLOT0_OFFSET)
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CFLAGS += -DSLOT1_LEN=$(SLOT1_LEN)
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CFLAGS += -DSLOT1_OFFSET=$(SLOT1_OFFSET)
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CFLAGS += -DNUM_SLOTS=$(NUM_SLOTS)
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