X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/6b5e684c77e5fa855b609d01e9a07fec296e9257..ad4308b1d123c36df674f553bb0c43f23cd7a99a:/Bootloaders/CDC/makefile

diff --git a/Bootloaders/CDC/makefile b/Bootloaders/CDC/makefile
index d39d2b21d..abc7c82a3 100644
--- a/Bootloaders/CDC/makefile
+++ b/Bootloaders/CDC/makefile
@@ -85,9 +85,11 @@ F_CPU = 8000000
 F_CLOCK = $(F_CPU)
 
 
-# Starting byte address of the bootloader, as a byte address. Note that the address given
-# in the AVRStudio fuse programming dialogue uses word addresses, which will have to be
-# doubled to obtain the starting byte address of the bootloader section.
+# Starting byte address of the bootloader, as a byte address - computed via the formula
+#   BOOT_START = ((TOTAL_FLASH_BYTES - BOOTLOADER_SECTION_SIZE_BYTES) * 1024)
+#
+# Note that the bootloader size and start address given in AVRStudio is in words and not
+# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
 BOOT_START = 0x1E000
 
 
@@ -119,6 +121,7 @@ LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENAB
 LUFA_OPTS += -D NO_INTERNAL_SERIAL
 LUFA_OPTS += -D NO_DEVICE_SELF_POWER
 LUFA_OPTS += -D NO_DEVICE_REMOTE_WAKEUP
+LUFA_OPTS += -D NO_STREAM_CALLBACKS
 
 
 # Create the LUFA source path variables by including the LUFA root makefile
@@ -322,6 +325,7 @@ EXTMEMOPTS =
 #    -Map:      create map file
 #    --cref:    add cross reference to  map file
 LDFLAGS  = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS += -Wl,--section-start=.text=$(BOOT_START)
 LDFLAGS += -Wl,--relax 
 LDFLAGS += -Wl,--gc-sections
 LDFLAGS += $(EXTMEMOPTS)
@@ -490,7 +494,10 @@ end:
 
 # Display size of file.
 HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
-ELFSIZE = $(SIZE) --mcu=$(MCU) --format=avr $(TARGET).elf
+ELFSIZE = $(SIZE) $(MCU_FLAG) $(FORMAT_FLAG) $(TARGET).elf
+MCU_FLAG = $(shell $(SIZE) --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
+FORMAT_FLAG = $(shell $(SIZE) --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
+
 
 sizebefore:
 	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \