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307e8c7a17
Introduce XMEGA EBI driver. This enable EBI for use with all memory supported by the device and peripherals. It include support to SRAM, SDRAM, LCDs or any other external bus access. Note: This feature only works for A1/A1U series, which are, the series with EBI hardware. Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
42 lines
1.5 KiB
Makefile
42 lines
1.5 KiB
Makefile
# Target architecture for the build. Use avr if you are unsure.
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TARGET_ARCH_AVR ?= avr
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TARGET_ARCH ?= $(TARGET_ARCH_AVR)
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ifeq (atxmega,$(CPU))
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ifeq (,$(CPU_MODEL))
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$(error CPU_MODEL must have been defined by the board Makefile.features)
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endif
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CFLAGS_CPU ?= -mmcu=$(CPU_MODEL) $(CFLAGS_FPU)
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else
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CFLAGS_CPU ?= -mmcu=$(CPU) $(CFLAGS_FPU)
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endif
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CFLAGS_LINK = -ffunction-sections -fdata-sections -fno-builtin -fshort-enums
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CFLAGS_DBG ?= -ggdb -g3
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CFLAGS_OPT ?= -Os
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CFLAGS += $(CFLAGS_CPU) $(CFLAGS_LINK) $(CFLAGS_DBG) $(CFLAGS_OPT)
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ASFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG)
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# needed for xfa support. Order is important.
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LINKFLAGS += -T$(RIOTCPU)/avr8_common/ldscripts/xfa.ld
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LINKFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG) $(CFLAGS_OPT) -static -lgcc -e reset_handler -Wl,--gc-sections
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# Use ROM_LEN and RAM_LEN during link
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$(if $(ROM_LEN),,$(error ROM_LEN is not defined))
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$(if $(RAM_LEN),,$(error RAM_LEN is not defined))
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LINKFLAGS += $(LINKFLAGPREFIX)--defsym=__TEXT_REGION_LENGTH__=$(ROM_LEN)$(if $(ROM_RESERVED),-$(ROM_RESERVED))
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LINKFLAGS += $(LINKFLAGPREFIX)--defsym=__DATA_REGION_LENGTH__=$(RAM_LEN)
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LINKFLAGS += $(LDSCRIPT_EXTRA)
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ifeq ($(LTO),1)
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# avr-gcc <4.8.3 has a bug when using LTO which causes a warning to be printed always:
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# '_vector_25' appears to be a misspelled signal handler [enabled by default]
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# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59396
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LINKFLAGS += -Wno-error
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endif
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OPTIONAL_CFLAGS_BLACKLIST += -Wformat-overflow
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OPTIONAL_CFLAGS_BLACKLIST += -Wformat-truncation
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OPTIONAL_CFLAGS_BLACKLIST += -gz
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