cpu/stm32: unify riotboot specific configuration
This commit is contained in:
Alexandre Abadie
parent
81e3e46fc5
commit
36f6de3ce6
@ -4,7 +4,7 @@ CFLAGS += -DCPU_FAM_$(call uppercase_and_underscore,$(CPU_FAM))
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LINKER_SCRIPT ?= stm32.ld
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# Include riotboot specific variables
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-include $(RIOTCPU)/stm32/$(CPU_FAM)_riotboot.mk
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include $(RIOTCPU)/stm32/stm32_riotboot.mk
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# Compute ROM_LEN and RAM_LEN
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include $(RIOTCPU)/stm32/stm32_mem_lengths.mk
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45
cpu/stm32/stm32_riotboot.mk
Normal file
45
cpu/stm32/stm32_riotboot.mk
Normal file
@ -0,0 +1,45 @@
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ifneq (,$(filter $(CPU_FAM),stm32f2 stm32f4 stm32f7))
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# STM32F2/4/7 uses sectors instead of pages, where the minimum sector length is 16KB
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# or 32KB (the first sector), depending on the CPU_MODEL. Therefore RIOTBOOT_LEN must
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# be 16KB or 32kB to cover a whole sector.
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ifneq (,$(filter $(CPU_FAM),stm32f2 stm32f4))
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RIOTBOOT_LEN ?= 0x4000
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else ifneq (,$(filter stm32f722ze,$(CPU_MODEL)))
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RIOTBOOT_LEN ?= 0x4000
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else # others stm32f7
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RIOTBOOT_LEN ?= 0x8000
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endif
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# CPU_IRQ_NUMOF for STM32F2 boards is < 81+16 so (97*4 bytes = 388 bytes ~= 0x200)
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# CPU_IRQ_NUMOF for STM32F4 boards is < 102+16 so (118*4 bytes = 472 bytes ~= 0x200)
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# CPU_IRQ_NUMOF for STM32F7 boards is < 110+16 so (126*4 bytes = 504 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200.
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# Details on alignment requirements for M3 in `cpu/cortexm_common/Makefile.include`.
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RIOTBOOT_HDR_LEN ?= 0x200
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# Sectors don't have the same length. Per bank there can be up to 12 sectors. The
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# first 4 sectors are 16kB long, the 5th is 64kB and the remaining 7 are 128kB.
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# Since flash can only be erased by sector, slots can't overlap over sectors.
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# The most efficient layout comes from removing RIOTBOOT_LEN twice, once at the
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# start of the flash for the bootloader, and a second time at the end of the
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# flash, to get evenly sized and distributed slots.
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SLOT0_LEN ?= $(shell printf "0x%x" $$((($(ROM_LEN:%K=%*1024)-2*$(RIOTBOOT_LEN)) / $(NUM_SLOTS))))
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SLOT1_LEN ?= $(SLOT0_LEN)
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else ifeq (stm32l4,$(CPU_FAM))
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# "The Vector table must be naturally aligned to a power of two whose alignment
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# value is greater than or equal to number of Exceptions supported x 4"
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# CPU_IRQ_NUMOFF for stm32l4 boards is < 91+16 so (107*4 bytes = 428 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200
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RIOTBOOT_HDR_LEN ?= 0x200
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else ifeq (stm32wb,$(CPU_FAM))
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# "The Vector table must be naturally aligned to a power of two whose alignment
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# value is greater than or equal to number of Exceptions supported x 4"
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# CPU_IRQ_NUMOFF for stm32l4 boards is < 91+16 so (107*4 bytes = 428 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200
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RIOTBOOT_HDR_LEN ?= 0x200
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# Slot size is determined by "((total_flash_size - RIOTBOOT_LEN) / 2)".
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# If RIOTBOOT_LEN uses an odd number of flashpages, the remainder of the
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# flash cannot be divided by two slots while staying FLASHPAGE_SIZE aligned.
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RIOTBOOT_LEN ?= 0x2000
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endif
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@ -1,17 +0,0 @@
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# STM32F2 uses sectors instead of pages, where the minimum sector length is 16KB
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# (the first sector), therefore RIOTBOOT_LEN must be 16KB to cover a whole sector.
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RIOTBOOT_LEN ?= 0x4000
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# CPU_IRQ_NUMOF for STM32F2 boards is < 81+16 so (97*4 bytes = 388 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200.
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# Details on alignment requirements for M3 in `cpu/cortexm_common/Makefile.include`.
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RIOTBOOT_HDR_LEN ?= 0x200
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# Sectors don't have the same length. Per bank there can be up to 12 sectors. The
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# first 4 sectors are 16kB long, the 5th is 64kB and the remaining 7 are 128kB.
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# Since flash can only be erased by sector, slots can't overlap over sectors.
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# The most efficient layout comes from removing RIOTBOOT_LEN twice, once at the
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# start of the flash for the bootloader, and a second time at the end of the
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# flash, to get evenly sized and distributed slots.
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SLOT0_LEN ?= $(shell printf "0x%x" $$((($(ROM_LEN:%K=%*1024)-2*$(RIOTBOOT_LEN)) / $(NUM_SLOTS))))
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SLOT1_LEN ?= $(SLOT0_LEN)
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@ -1,16 +0,0 @@
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# STM32F4 uses sectors instead of pages, where the minimum sector length is 16KB
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# (the first sector), therefore RIOTBOOT_LEN must be 16KB to cover a whole sector.
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RIOTBOOT_LEN ?= 0x4000
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# CPU_IRQ_NUMOF for STM32F4 boards is < 102+16 so (118*4 bytes = 472 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200.
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# Details on alignment requirements for M4 in `cpu/cortexm_common/Makefile.include`.
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RIOTBOOT_HDR_LEN ?= 0x200
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# Sectors don't have the same length. Per bank there can be up to 12 sectors. The
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# first 4 sectors are 16kB long, the 5th is 64kB and the remaining 7 are 128kB.
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# Since flash can only be erased by sector, slots can't overlap over sectors.
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# RIOTBOOT_LEN is removed twice, once at the start of the flash for the bootloader,
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# and a second time at the end of the flash, to get evenly sized and distributed slots.
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SLOT0_LEN ?= $(shell printf "0x%x" $$((($(ROM_LEN:%K=%*1024)-2*$(RIOTBOOT_LEN)) / $(NUM_SLOTS))))
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SLOT1_LEN ?= $(SLOT0_LEN)
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@ -1,22 +0,0 @@
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# STM32F7 uses sectors instead of pages, where the minimum sector length is 16KB or
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# 32kB (the first sector), depending on the CPU_MODEL. Therefore RIOTBOOT_LEN must
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# be 16KB or 32kB to cover a whole sector.
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ifneq (,$(filter stm32f722ze ,$(CPU_MODEL)))
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RIOTBOOT_LEN ?= 0x4000
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else
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RIOTBOOT_LEN ?= 0x8000
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endif
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# CPU_IRQ_NUMOF for STM32F7 boards is < 110+16 so (126*4 bytes = 504 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200.
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# Details on alignment requirements for M4 in `cpu/cortexm_common/Makefile.include`.
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RIOTBOOT_HDR_LEN ?= 0x200
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# Sectors don't have the same length. Per bank there can be up to 12 sectors. If
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# the smallest sector size is 16kb the first 4 sectors are 16kB long, the 5th is
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# 64kB and the remaining 7 are 128kB. Since flash can only be erased by sector,
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# slots can't overlap over sectors.
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# RIOTBOOT_LEN is removed twice, once at the start of the flash for the bootloader,
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# and a second time at the end of the flash, to get evenly sized and distributed slots.
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SLOT0_LEN ?= $(shell printf "0x%x" $$((($(ROM_LEN:%K=%*1024)-2*$(RIOTBOOT_LEN)) / $(NUM_SLOTS))))
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SLOT1_LEN ?= $(SLOT0_LEN)
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@ -1,5 +0,0 @@
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# "The Vector table must be naturally aligned to a power of two whose alignment
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# value is greater than or equal to number of Exceptions supported x 4"
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# CPU_IRQ_NUMOFF for stm32l4 boards is < 91+16 so (107*4 bytes = 428 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200
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RIOTBOOT_HDR_LEN ?= 0x200
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@ -1,10 +0,0 @@
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# "The Vector table must be naturally aligned to a power of two whose alignment
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# value is greater than or equal to number of Exceptions supported x 4"
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# CPU_IRQ_NUMOFF for stm32l4 boards is < 91+16 so (107*4 bytes = 428 bytes ~= 0x200)
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# RIOTBOOT_HDR_LEN can be set to 0x200
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RIOTBOOT_HDR_LEN ?= 0x200
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# Slot size is determined by "((total_flash_size - RIOTBOOT_LEN) / 2)".
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# If RIOTBOOT_LEN uses an odd number of flashpages, the remainder of the
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# flash cannot be divided by two slots while staying FLASHPAGE_SIZE aligned.
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RIOTBOOT_LEN ?= 0x2000
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