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      1 #
      2 # Copyright (C) 2016 The Android Open Source Project
      3 #
      4 # Licensed under the Apache License, Version 2.0 (the "License");
      5 # you may not use this file except in compliance with the License.
      6 # You may obtain a copy of the License at
      7 #
      8 #      http://www.apache.org/licenses/LICENSE-2.0
      9 #
     10 # Unless required by applicable law or agreed to in writing, software
     11 # distributed under the License is distributed on an "AS IS" BASIS,
     12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 # See the License for the specific language governing permissions and
     14 # limitations under the License.
     15 #
     16 
     17 M3DEBUG ?= m3debug
     18 
     19 ifneq ($(CPU),cortexm4)
     20         $(error "stm32 cplatform only supports Cortex-M4 CPUs")
     21 endif
     22 
     23 BL_FILE = $(OUT)/bl.unchecked.bin
     24 OS_FILE = $(OUT)/os.checked.bin
     25 
     26 DELIVERABLES += showsizes
     27 FLAGS += -I. -fno-unwind-tables -fstack-reuse=all -ffunction-sections -fdata-sections
     28 FLAGS += -Wl,--gc-sections -nostartfiles
     29 FLAGS += -nostdlib
     30 
     31 #platform bootloader
     32 SRCS_bl += os/platform/$(PLATFORM)/bl.c
     33 
     34 #platform runtime
     35 SRCS_os +=  os/platform/$(PLATFORM)/crt_$(PLATFORM).c
     36 
     37 #platform drivers
     38 SRCS_os += os/platform/$(PLATFORM)/platform.c \
     39 	os/platform/$(PLATFORM)/usart.c \
     40 	os/platform/$(PLATFORM)/gpio.c \
     41 	os/platform/$(PLATFORM)/pwr.c \
     42 	os/platform/$(PLATFORM)/wdt.c \
     43 	os/platform/$(PLATFORM)/i2c.c \
     44 	os/platform/$(PLATFORM)/exti.c \
     45 	os/platform/$(PLATFORM)/syscfg.c \
     46 	os/platform/$(PLATFORM)/spi.c \
     47 	os/platform/$(PLATFORM)/rtc.c \
     48 	os/platform/$(PLATFORM)/mpu.c \
     49 	os/platform/$(PLATFORM)/dma.c \
     50 	os/platform/$(PLATFORM)/crc.c \
     51 	os/platform/$(PLATFORM)/hostIntf.c \
     52 	os/platform/$(PLATFORM)/apInt.c \
     53 	os/platform/$(PLATFORM)/eeData.c
     54 
     55 
     56 #platform drivers for bootloader
     57 SRCS_bl += os/platform/$(PLATFORM)/pwr.c os/platform/$(PLATFORM)/gpio.c
     58 
     59 #extra deps
     60 DEPS += $(wildcard os/platform/$(PLATFORM)/inc/plat/*.h)
     61 DEPS += $(wildcard os/platform/$(PLATFORM)/inc/plat/cmsis/*.h)
     62 
     63 #linker script
     64 LKR_os = os/platform/$(PLATFORM)/lkr/$(CHIP).os.lkr
     65 LKR_bl = os/platform/$(PLATFORM)/lkr/$(CHIP).bl.lkr
     66 OSFLAGS_os += -Wl,-T $(LKR_os)
     67 OSFLAGS_bl += -Wl,-T $(LKR_bl)
     68 DEPS += $(LKR_os) $(LKR_bl)
     69 
     70 #platform flags
     71 PLATFORM_HAS_HARDWARE_CRC = true
     72 FLAGS += -DPLATFORM_HW_VER=0
     73 
     74 #platform-specific rules
     75 OBJCOPY_PARAMS = -I elf32-littlearm -O binary
     76 
     77 $(OUT)/bl.%.bin : $(OUT)/bl.%.elf
     78 	$(OBJCOPY) -j .bl -j .data -j .eedata $(OBJCOPY_PARAMS) $< $@
     79 
     80 $(OUT)/os.%.bin : $(OUT)/os.%.elf
     81 	$(OBJCOPY) -j .data -j .text $(OBJCOPY_PARAMS) $< $@
     82 
     83 showsizes: $(OUT)/os.unchecked.elf
     84 	os/platform/$(PLATFORM)/misc/showsizes.sh $<
     85 
     86 $(info Included STM32 platfrom)
     87