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Custom linker script.
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Implement a hack to derive section start addresses from the
information like FLASHEND that is present in the source code (via
io.h) This requires a custom linker script that uses symbols defined
by inline ASM in the C program, the inline ASM itself, and some
calculations/guesswork to figure out bootloader size for those
VIRTUAL_BOOT platforms that have a bootloader size larger than 512
bytes but significantly smaller than 1024 bytes.
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@WestfW
WestfW committed Nov 5, 2021
1 parent 68b7a55 commit be65a28
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Showing 16 changed files with 2,177 additions and 1,463 deletions.
22 changes: 1 addition & 21 deletions optiboot/bootloaders/optiboot/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -60,7 +60,7 @@ export

# defaults
MCU_TARGET = atmega168
LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
LDSECTIONS = -Wl,-Tlink_optiboot.ld

# Build environments
# Start of some ugly makefile-isms to allow optiboot to be built
Expand Down Expand Up @@ -349,8 +349,6 @@ virboot8: TARGET = atmega8
virboot8: MCU_TARGET = atmega8
virboot8: CFLAGS += $(COMMON_OPTIONS) '-DVIRTUAL_BOOT_PARTITION' '-Dsave_vect_num=EE_RDY_vect_num'
virboot8: AVR_FREQ ?= 16000000L
# Start address of 1D80 allows for size up to 640 bytes, app up to 7552
virboot8: LDSECTIONS = -Wl,--section-start=.text=0x1d80 -Wl,--section-start=.version=0x1ffe
virboot8: $(PROGRAM)_virboot8.hex
ifndef PRODUCTION
virboot8: $(PROGRAM)_virboot8.lst
Expand All @@ -362,7 +360,6 @@ virboot328: TARGET = atmega328
virboot328: MCU_TARGET = atmega328p
virboot328: CFLAGS += $(COMMON_OPTIONS) '-DVIRTUAL_BOOT_PARTITION'
virboot328: AVR_FREQ ?= 16000000L
virboot328: LDSECTIONS = -Wl,--section-start=.text=0x7d80 -Wl,--section-start=.version=0x7ffe
virboot328: $(PROGRAM)_virboot328.hex
ifndef PRODUCTION
virboot328: $(PROGRAM)_virboot328.lst
Expand Down Expand Up @@ -403,11 +400,6 @@ atmega8: TARGET = atmega8
atmega8: MCU_TARGET = atmega8
atmega8: CFLAGS += $(COMMON_OPTIONS)
atmega8: AVR_FREQ ?= 16000000L
ifndef BIGBOOT
atmega8: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe -Wl,--gc-sections -Wl,--undefined=optiboot_version
else
atmega8: LDSECTIONS = -Wl,--section-start=.text=0x1c00 -Wl,--section-start=.version=0x1ffe -Wl,--gc-sections -Wl,--undefined=optiboot_version
endif
atmega8: $(PROGRAM)_atmega8.hex
ifndef PRODUCTION
atmega8: $(PROGRAM)_atmega8.lst
Expand All @@ -432,11 +424,6 @@ atmega168: TARGET = atmega168
atmega168: MCU_TARGET = atmega168
atmega168: CFLAGS += $(COMMON_OPTIONS)
atmega168: AVR_FREQ ?= 16000000L
ifndef BIGBOOT
atmega168: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
else
atmega168: LDSECTIONS = -Wl,--section-start=.text=0x3c00 -Wl,--section-start=.version=0x3ffe
endif
atmega168: $(PROGRAM)_atmega168.hex
ifndef PRODUCTION
atmega168: $(PROGRAM)_atmega168.lst
Expand All @@ -462,12 +449,6 @@ atmega328: TARGET = atmega328
atmega328: MCU_TARGET = atmega328p
atmega328: CFLAGS += $(COMMON_OPTIONS)
atmega328: AVR_FREQ ?= 16000000L
ifndef BIGBOOT
atmega328: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
else
# bigboot version is 1k long; starts earlier
atmega328: LDSECTIONS = -Wl,--section-start=.text=0x7c00 -Wl,--section-start=.version=0x7ffe
endif
atmega328: $(PROGRAM)_atmega328.hex
ifndef PRODUCTION
atmega328: $(PROGRAM)_atmega328.lst
Expand All @@ -494,7 +475,6 @@ atmega328_isp: isp
atmega1280: MCU_TARGET = atmega1280
atmega1280: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega1280: AVR_FREQ ?= 16000000L
atmega1280: LDSECTIONS = -Wl,--section-start=.text=0x1fc00 -Wl,--section-start=.version=0x1fffe
atmega1280: $(PROGRAM)_atmega1280.hex
ifndef PRODUCTION
atmega1280: $(PROGRAM)_atmega1280.lst
Expand Down
2 changes: 0 additions & 2 deletions optiboot/bootloaders/optiboot/Makefile.1284
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ atmega644p: TARGET = atmega644p
atmega644p: MCU_TARGET = atmega644p
atmega644p: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT
atmega644p: AVR_FREQ ?= 16000000L
atmega644p: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega644p: CFLAGS += $(UART_CMD)
atmega644p: $(PROGRAM)_atmega644p.hex
ifndef PRODUCTION
Expand All @@ -24,7 +23,6 @@ atmega1284: TARGET = atmega1284p
atmega1284: MCU_TARGET = atmega1284p
atmega1284: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT
atmega1284: AVR_FREQ ?= 16000000L
atmega1284: LDSECTIONS = -Wl,--section-start=.text=0x1fc00 -Wl,--section-start=.version=0x1fffe
atmega1284: CFLAGS += $(UART_CMD)
atmega1284: $(PROGRAM)_atmega1284p.hex
ifndef PRODUCTION
Expand Down
1 change: 0 additions & 1 deletion optiboot/bootloaders/optiboot/Makefile.2560
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ atmega2560: TARGET = atmega2560
atmega2560: MCU_TARGET = atmega2560
atmega2560: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT
atmega2560: AVR_FREQ ?= 16000000L
atmega2560: LDSECTIONS = -Wl,--section-start=.text=0x3fc00 -Wl,--section-start=.version=0x3fffe
atmega2560: CFLAGS += $(UART_CMD)
atmega2560: $(PROGRAM)_atmega2560.hex
ifndef PRODUCTION
Expand Down
3 changes: 0 additions & 3 deletions optiboot/bootloaders/optiboot/Makefile.extras
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@ atmega88: TARGET = atmega88
atmega88: MCU_TARGET = atmega88
atmega88: CFLAGS += $(COMMON_OPTIONS)
atmega88: AVR_FREQ ?= 16000000L
atmega88: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe -Wl,--gc-sections -Wl,--undefined=optiboot_version
atmega88: $(PROGRAM)_atmega88.hex
atmega88: $(PROGRAM)_atmega88.lst

Expand Down Expand Up @@ -82,7 +81,6 @@ atmega32: TARGET = atmega32
atmega32: MCU_TARGET = atmega32
atmega32: CFLAGS += $(COMMON_OPTIONS)
atmega32: AVR_FREQ ?= 11059200L
atmega32: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega32: $(PROGRAM)_atmega32.hex
atmega32: $(PROGRAM)_atmega32.lst

Expand All @@ -100,7 +98,6 @@ HELPTEXT += "target atmega128rfa1 - ATmega128RFA1 (100pin, 128k)\n"
atmega128rfa1: MCU_TARGET = atmega128rfa1
atmega128rfa1: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega128rfa1: AVR_FREQ ?= 16000000L
atmega128rfa1: LDSECTIONS = -Wl,--section-start=.text=0x1fc00 -Wl,--section-start=.version=0x1fffe
atmega128rfa1: $(PROGRAM)_atmega128rfa1.hex
ifndef PRODUCTION
atmega128rfa1: $(PROGRAM)_atmega128rfa1.lst
Expand Down
31 changes: 0 additions & 31 deletions optiboot/bootloaders/optiboot/Makefile.mcudude
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,6 @@ atmega16: TARGET = atmega16
atmega16: MCU_TARGET = atmega16
atmega16: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega16: AVR_FREQ ?= 16000000L
atmega16: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega16: $(PROGRAM)_atmega16_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega16: $(PROGRAM)_atmega16_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -37,7 +36,6 @@ atmega64: TARGET = atmega64
atmega64: MCU_TARGET = atmega64
atmega64: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega64: AVR_FREQ ?= 16000000L
atmega64: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega64: $(PROGRAM)_atmega64_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega64: $(PROGRAM)_atmega64_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -49,7 +47,6 @@ atmega88p: TARGET = atmega88p
atmega88p: MCU_TARGET = atmega88p
atmega88p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega88p: AVR_FREQ ?= 16000000L
atmega88p: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe -Wl,--gc-sections -Wl,--undefined=optiboot_version
atmega88p: $(PROGRAM)_atmega88p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega88p: $(PROGRAM)_atmega88p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -61,7 +58,6 @@ atmega88pb: TARGET = atmega88pb
atmega88pb: MCU_TARGET = atmega88pb
atmega88pb: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega88pb: AVR_FREQ ?= 16000000L
atmega88pb: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe -Wl,--gc-sections -Wl,--undefined=optiboot_version
atmega88pb: $(PROGRAM)_atmega88pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega88pb: $(PROGRAM)_atmega88pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -72,7 +68,6 @@ atmega128: TARGET = atmega128
atmega128: MCU_TARGET = atmega128
atmega128: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega128: AVR_FREQ ?= 16000000L
atmega128: LDSECTIONS = -Wl,--section-start=.text=0x1fc00 -Wl,--section-start=.version=0x1fffe
atmega128: $(PROGRAM)_atmega128_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega128: $(PROGRAM)_atmega128_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -84,7 +79,6 @@ atmega162: TARGET = atmega162
atmega162: MCU_TARGET = atmega162
atmega162: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega162: AVR_FREQ ?= 16000000L
atmega162: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega162: $(PROGRAM)_atmega162_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega162: $(PROGRAM)_atmega162_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -95,7 +89,6 @@ atmega164a: TARGET = atmega164a
atmega164a: MCU_TARGET = atmega164a
atmega164a: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega164a: AVR_FREQ ?= 16000000L
atmega164a: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega164a: $(PROGRAM)_atmega164a_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega164a: $(PROGRAM)_atmega164a_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -107,7 +100,6 @@ atmega164p: TARGET = atmega164p
atmega164p: MCU_TARGET = atmega164p
atmega164p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega164p: AVR_FREQ ?= 16000000L
atmega164p: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega164p: $(PROGRAM)_atmega164p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega164p: $(PROGRAM)_atmega164p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -119,7 +111,6 @@ atmega164pa: atmega164p
#atmega168: MCU_TARGET = atmega168
#atmega168: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
#atmega168: AVR_FREQ ?= 16000000L
#atmega168: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
#atmega168: $(PROGRAM)_atmega168_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
#ifndef PRODUCTION
#atmega168: $(PROGRAM)_atmega168_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -131,7 +122,6 @@ atmega168p: TARGET = atmega168p
atmega168p: MCU_TARGET = atmega168p
atmega168p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega168p: AVR_FREQ ?= 16000000L
atmega168p: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega168p: $(PROGRAM)_atmega168p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega168p: $(PROGRAM)_atmega168p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -143,7 +133,6 @@ atmega168pb: TARGET = atmega168pb
atmega168pb: MCU_TARGET = atmega168pb
atmega168pb: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega168pb: AVR_FREQ ?= 16000000L
atmega168pb: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega168pb: $(PROGRAM)_atmega168pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega168pb: $(PROGRAM)_atmega168pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -154,7 +143,6 @@ atmega169: TARGET = atmega169
atmega169: MCU_TARGET = atmega169
atmega169: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega169: AVR_FREQ ?= 16000000L
atmega169: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega169: $(PROGRAM)_atmega169_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega169: $(PROGRAM)_atmega169_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -166,7 +154,6 @@ atmega169p: TARGET = atmega169p
atmega169p: MCU_TARGET = atmega169p
atmega169p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega169p: AVR_FREQ ?= 16000000L
atmega169p: LDSECTIONS = -Wl,--section-start=.text=0x3e00 -Wl,--section-start=.version=0x3ffe
atmega169p: $(PROGRAM)_atmega169p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega169p: $(PROGRAM)_atmega169p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -178,7 +165,6 @@ atmega324a: TARGET = atmega324a
atmega324a: MCU_TARGET = atmega324a
atmega324a: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega324a: AVR_FREQ ?= 16000000L
atmega324a: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega324a: $(PROGRAM)_atmega324a_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega324a: $(PROGRAM)_atmega324a_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -190,7 +176,6 @@ atmega324p: TARGET = atmega324p
atmega324p: MCU_TARGET = atmega324p
atmega324p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega324p: AVR_FREQ ?= 16000000L
atmega324p: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega324p: $(PROGRAM)_atmega324p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega324p: $(PROGRAM)_atmega324p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -201,7 +186,6 @@ atmega324pa: TARGET = atmega324pa
atmega324pa: MCU_TARGET = atmega324pa
atmega324pa: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega324pa: AVR_FREQ ?= 16000000L
atmega324pa: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega324pa: $(PROGRAM)_atmega324pa_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega324pa: $(PROGRAM)_atmega324pa_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -212,7 +196,6 @@ atmega324pb: TARGET = atmega324pb
atmega324pb: MCU_TARGET = atmega324pb
atmega324pb: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega324pb: AVR_FREQ ?= 16000000L
atmega324pb: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega324pb: $(PROGRAM)_atmega324pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega324pb: $(PROGRAM)_atmega324pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -223,7 +206,6 @@ atmega328pb: TARGET = atmega328pb
atmega328pb: MCU_TARGET = atmega328pb
atmega328pb: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega328pb: AVR_FREQ ?= 16000000L
atmega328pb: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega328pb: $(PROGRAM)_atmega328pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega328pb: $(PROGRAM)_atmega328pb_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -234,7 +216,6 @@ atmega329: TARGET = atmega329
atmega329: MCU_TARGET = atmega329
atmega329: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega329: AVR_FREQ ?= 16000000L
atmega329: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega329: $(PROGRAM)_atmega329_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega329: $(PROGRAM)_atmega329_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -246,7 +227,6 @@ atmega329p: TARGET = atmega329p
atmega329p: MCU_TARGET = atmega329p
atmega329p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega329p: AVR_FREQ ?= 16000000L
atmega329p: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega329p: $(PROGRAM)_atmega329p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega329p: $(PROGRAM)_atmega329p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -258,7 +238,6 @@ atmega640: TARGET = atmega640
atmega640: MCU_TARGET = atmega640
atmega640: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega640: AVR_FREQ ?= 16000000L
atmega640: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega640: $(PROGRAM)_atmega640_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega640: $(PROGRAM)_atmega640_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -269,7 +248,6 @@ atmega649: TARGET = atmega649
atmega649: MCU_TARGET = atmega649
atmega649: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega649: AVR_FREQ ?= 16000000L
atmega649: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega649: $(PROGRAM)_atmega649_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega649: $(PROGRAM)_atmega649_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -280,7 +258,6 @@ atmega649p: TARGET = atmega649p
atmega649p: MCU_TARGET = atmega649p
atmega649p: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega649p: AVR_FREQ ?= 16000000L
atmega649p: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega649p: $(PROGRAM)_atmega649p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega649p: $(PROGRAM)_atmega649p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -291,7 +268,6 @@ atmega1281: TARGET = atmega1281
atmega1281: MCU_TARGET = atmega1281
atmega1281: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega1281: AVR_FREQ ?= 16000000L
atmega1281: LDSECTIONS = -Wl,--section-start=.text=0x1fc00 -Wl,--section-start=.version=0x1fffe
atmega1281: $(PROGRAM)_atmega1281_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega1281: $(PROGRAM)_atmega1281_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -302,7 +278,6 @@ atmega2561: TARGET = atmega2561
atmega2561: MCU_TARGET = atmega2561
atmega2561: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega2561: AVR_FREQ ?= 16000000L
atmega2561: LDSECTIONS = -Wl,--section-start=.text=0x3fc00 -Wl,--section-start=.version=0x3fffe
atmega2561: $(PROGRAM)_atmega2561_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega2561: $(PROGRAM)_atmega2561_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -313,7 +288,6 @@ atmega3290: TARGET = atmega3290
atmega3290: MCU_TARGET = atmega3290
atmega3290: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega3290: AVR_FREQ ?= 16000000L
atmega3290: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega3290: $(PROGRAM)_atmega3290_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega3290: $(PROGRAM)_atmega3290_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -324,7 +298,6 @@ atmega3290p: TARGET = atmega3290p
atmega3290p: MCU_TARGET = atmega3290p
atmega3290p: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega3290p: AVR_FREQ ?= 16000000L
atmega3290p: LDSECTIONS = -Wl,--section-start=.text=0x7e00 -Wl,--section-start=.version=0x7ffe
atmega3290p: $(PROGRAM)_atmega3290p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega3290p: $(PROGRAM)_atmega3290p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -336,7 +309,6 @@ atmega6490: TARGET = atmega6490
atmega6490: MCU_TARGET = atmega6490
atmega6490: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega6490: AVR_FREQ ?= 16000000L
atmega6490: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega6490: $(PROGRAM)_atmega6490_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega6490: $(PROGRAM)_atmega6490_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -347,7 +319,6 @@ atmega6490p: TARGET = atmega6490p
atmega6490p: MCU_TARGET = atmega6490p
atmega6490p: CFLAGS += $(COMMON_OPTIONS) -DBIGBOOT $(UART_CMD)
atmega6490p: AVR_FREQ ?= 16000000L
atmega6490p: LDSECTIONS = -Wl,--section-start=.text=0xfc00 -Wl,--section-start=.version=0xfffe
atmega6490p: $(PROGRAM)_atmega6490p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega6490p: $(PROGRAM)_atmega6490p_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -358,7 +329,6 @@ atmega8515: TARGET = atmega8515
atmega8515: MCU_TARGET = atmega8515
atmega8515: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega8515: AVR_FREQ ?= 16000000L
atmega8515: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe
atmega8515: $(PROGRAM)_atmega8515_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega8515: $(PROGRAM)_atmega8515_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
Expand All @@ -369,7 +339,6 @@ atmega8535: TARGET := atmega8535
atmega8535: MCU_TARGET = atmega8535
atmega8535: CFLAGS += $(COMMON_OPTIONS) $(UART_CMD)
atmega8535: AVR_FREQ ?= 16000000L
atmega8535: LDSECTIONS = -Wl,--section-start=.text=0x1e00 -Wl,--section-start=.version=0x1ffe
atmega8535: $(PROGRAM)_atmega8535_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).hex
ifndef PRODUCTION
atmega8535: $(PROGRAM)_atmega8535_UART$(UART)_$(BAUD_RATE)_$(AVR_FREQ).lst
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1 comment on commit be65a28

@WestfW
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@WestfW WestfW commented on be65a28 Nov 6, 2021

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A similar change would be possible for optiboot_x, but is unnecessary since the section addresses are constant across all of the mega-0/xTiny chips.

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