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cpu/sam0_common: derive ROM_LEN & RAM_LEN from part number #13607

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Merged
dylad merged 1 commit into from
Mar 31, 2020
Merged

cpu/sam0_common: derive ROM_LEN & RAM_LEN from part number #13607

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32 changes: 13 additions & 19 deletions cpu/sam0_common/Makefile.include
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Original file line number Diff line number Diff line change
Expand Up @@ -4,25 +4,19 @@ CFLAGS += -DCPU_FAM_$(call uppercase_and_underscore,$(CPU_FAM))
# Generate ASF compatible model definition
CFLAGS += -D__$(call uppercase_and_underscore,$(CPU_MODEL))__

# Set ROM and RAM lengths according to CPU model
ifneq (,$(filter samd21g18a samd21j18a saml21j18b saml21j18a samr21e18a \
samr21g18a samr30g18a samr34j18b,$(CPU_MODEL)))

ROM_LEN ?= 0x40000
RAM_LEN ?= 0x8000
endif
ifneq (,$(filter saml10e16a saml11e16a,$(CPU_MODEL)))
ROM_LEN ?= 64K
RAM_LEN ?= 16K
endif
ifneq (,$(filter samd21j17d,$(CPU_MODEL)))
ROM_LEN ?= 128K
RAM_LEN ?= 16K
endif
ifneq (,$(filter samd51j20a same54p20a,$(CPU_MODEL)))
ROM_LEN ?= 1024K
RAM_LEN ?= 256K
endif
# Compute CPU_LINE
LINE := $(shell echo $(CPU_MODEL) | sed -E -e 's/^sam([a-z][0-9][0-9])(.)([0-9][0-9])(.)/\1 \2 \3 \4/')
FAMILY := $(word 1, $(LINE))
TYPE1 := $(word 2, $(LINE))
MEMORY := $(word 3, $(LINE))
TYPE2 := $(word 4, $(LINE))

# ROM length is directly encoded in the part number
ROM_LEN := $(shell echo $$((1 << $(MEMORY))))

# get vendor file to extract RAM length
VENDOR_FILE := $(shell find $(RIOTCPU)/sam0_common/include/vendor/sam$(FAMILY) -name $(CPU_MODEL).h | grep include.*/sam)
RAM_LEN := $(shell sed -E -n 's/\#define (HMCRAMC0_SIZE|HSRAM_SIZE).*(0x[[:xdigit:]]*).*/\2/p' $(VENDOR_FILE))

ROM_START_ADDR ?= 0x00000000
RAM_START_ADDR ?= 0x20000000
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