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+# ----------------------------------------------------------------------------
+# ATMEL Microcontroller Software Support
+# ----------------------------------------------------------------------------
+# Copyright (c) 2008, Atmel Corporation
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# - Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the disclaimer below.
+#
+# Atmel's name may not be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+# DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+# OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# ----------------------------------------------------------------------------
+
+# Makefile for compiling the USB COMPOSITE project
+
+#-------------------------------------------------------------------------------
+# User-modifiable options
+#-------------------------------------------------------------------------------
+
+# Chip & board used for compilation
+# (can be overriden by adding CHIP=chip and BOARD=board to the command-line)
+CHIP = at91sam7se512
+BOARD = at91sam7se-ek
+
+# Trace level used for compilation
+# (can be overriden by adding TRACE_LEVEL=#number to the command-line)
+# TRACE_LEVEL_DEBUG 5
+# TRACE_LEVEL_INFO 4
+# TRACE_LEVEL_WARNING 3
+# TRACE_LEVEL_ERROR 2
+# TRACE_LEVEL_FATAL 1
+# TRACE_LEVEL_NO_TRACE 0
+TRACE_LEVEL = 3
+
+# Optimization level, put in comment for debugging
+OPTIMIZATION = -Os
+
+# AT91 library directory
+AT91LIB = ../at91lib
+
+# Output file basename
+OUTPUT = usb-device-composite-cdchid-project-$(usb_CLASS)-$(BOARD)-$(CHIP)
+
+# Compile for all memories available on the board (this sets $(MEMORIES))
+include $(AT91LIB)/boards/$(BOARD)/board.mak
+
+# Output directories
+BIN = bin
+OBJ = obj
+
+#-------------------------------------------------------------------------------
+# Tools
+#-------------------------------------------------------------------------------
+
+# Tool suffix when cross-compiling
+CROSS_COMPILE = arm-none-eabi-
+
+# Compilation tools
+CC = $(CROSS_COMPILE)gcc
+SIZE = $(CROSS_COMPILE)size
+OBJCOPY = $(CROSS_COMPILE)objcopy
+
+# Flags
+INCLUDES = -I$(AT91LIB)/boards/$(BOARD) -I$(AT91LIB)/peripherals
+INCLUDES += -I$(AT91LIB)/components -I$(AT91LIB)/usb/device -I$(AT91LIB)
+
+CFLAGS = -Wall -mlong-calls -ffunction-sections
+CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -DTRACE_LEVEL=$(TRACE_LEVEL)
+CFLAGS += -Dusb_CDCHID
+ASFLAGS = -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D__ASSEMBLY__
+LDFLAGS = -g $(OPTIMIZATION) -nostartfiles -Wl,--gc-sections
+
+#-------------------------------------------------------------------------------
+# Files
+#-------------------------------------------------------------------------------
+
+# Directories where source files can be found
+USB = $(AT91LIB)/usb
+UTILITY = $(AT91LIB)/utility
+PERIPH = $(AT91LIB)/peripherals
+BOARDS = $(AT91LIB)/boards
+COMP = $(AT91LIB)/components
+MEM = $(AT91LIB)/memories
+
+VPATH += $(MEM)
+VPATH += $(USB)/device/hid-keyboard $(USB)/common/hid
+VPATH += $(USB)/device/composite
+VPATH += $(USB)/device/core $(USB)/common/core
+VPATH += $(USB)/common/cdc
+VPATH += $(UTILITY)
+VPATH += $(PERIPH)/dbgu $(PERIPH)/aic $(PERIPH)/usart $(PERIPH)/pio $(PERIPH)/pmc
+VPATH += $(PERIPH)/cp15 $(PERIPH)/pit
+VPATH += $(BOARDS)/$(BOARD) $(BOARDS)/$(BOARD)/$(CHIP)
+
+# Objects built from C source files
+C_OBJECTS = main.o
+C_OBJECTS += COMPOSITEDDriver.o COMPOSITEDDriverDescriptors.o
+C_OBJECTS += CDCSetControlLineStateRequest.o CDCLineCoding.o
+C_OBJECTS += CDCDFunctionDriver.o
+C_OBJECTS += HIDIdleRequest.o HIDReportRequest.o HIDKeypad.o
+C_OBJECTS += HIDDKeyboardInputReport.o HIDDKeyboardOutputReport.o
+C_OBJECTS += HIDDFunctionDriver.o
+C_OBJECTS += USBD_OTGHS.o USBD_UDP.o USBD_UDPHS.o USBDDriver.o
+C_OBJECTS += USBDCallbacks_Initialized.o
+C_OBJECTS += USBDCallbacks_Reset.o
+#C_OBJECTS += USBDCallbacks_Resumed.o
+#C_OBJECTS += USBDCallbacks_Suspended.o
+#C_OBJECTS += USBDDriverCb_CfgChanged.o
+#C_OBJECTS += USBDDriverCb_IfSettingChanged.o
+C_OBJECTS += USBSetAddressRequest.o USBGenericDescriptor.o USBInterfaceRequest.o
+C_OBJECTS += USBGenericRequest.o USBGetDescriptorRequest.o
+C_OBJECTS += USBSetConfigurationRequest.o USBFeatureRequest.o
+C_OBJECTS += USBEndpointDescriptor.o USBConfigurationDescriptor.o
+C_OBJECTS += led.o string.o stdio.o
+C_OBJECTS += aic.o dbgu.o usart.o pio.o pio_it.o pmc.o cp15.o pit.o
+C_OBJECTS += board_memories.o board_lowlevel.o
+
+# Objects built from Assembly source files
+ASM_OBJECTS = board_cstartup.o
+ASM_OBJECTS += cp15_asm.o
+
+# Append OBJ and BIN directories to output filename
+OUTPUT := $(BIN)/$(OUTPUT)
+
+#-------------------------------------------------------------------------------
+# Rules
+#-------------------------------------------------------------------------------
+
+all: $(BIN) $(OBJ) $(MEMORIES)
+
+$(BIN) $(OBJ):
+ mkdir $@
+
+define RULES
+C_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(C_OBJECTS))
+ASM_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(ASM_OBJECTS))
+
+$(1): $$(ASM_OBJECTS_$(1)) $$(C_OBJECTS_$(1))
+ $(CC) $(LDFLAGS) -T"$(AT91LIB)/boards/$(BOARD)/$(CHIP)/$$@.lds" -o $(OUTPUT)-$$@.elf $$^
+ $(OBJCOPY) -O binary $(OUTPUT)-$$@.elf $(OUTPUT)-$$@.bin
+ $(SIZE) $$^ $(OUTPUT)-$$@.elf
+
+$$(C_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.c Makefile $(OBJ) $(BIN)
+ $(CC) $(CFLAGS) -D$(1) -c -o $$@ $$<
+
+$$(ASM_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.S Makefile $(OBJ) $(BIN)
+ $(CC) $(ASFLAGS) -D$(1) -c -o $$@ $$<
+
+debug_$(1): $(1)
+ perl ../resources/gdb/debug.pl $(OUTPUT)-$(1).elf
+
+endef
+
+$(foreach MEMORY, $(MEMORIES), $(eval $(call RULES,$(MEMORY))))
+
+clean:
+ -rm -f $(OBJ)/*.o $(BIN)/*.bin $(BIN)/*.elf
+
personal git repositories of Harald Welte. Your mileage may vary