diff --git a/Makefile b/Makefile index 17f472b94c..ea0af2bade 100644 --- a/Makefile +++ b/Makefile @@ -20,6 +20,9 @@ TARGET ?= NAZE # Compile-time options OPTIONS ?= +# compile for OpenPilot BootLoader support +OPBL ?=no + # Debugger optons, must be empty or GDB DEBUG ?= @@ -34,6 +37,9 @@ FORKNAME = cleanflight VALID_TARGETS = NAZE NAZE32PRO OLIMEXINO STM32F3DISCOVERY CHEBUZZF3 CC3D CJMCU EUSTM32F103RC +# Valid targets for OP BootLoader support +OPBL_VALID_TARGETS = CC3D + REVISION = $(shell git log -1 --format="%h") # Working directories @@ -290,6 +296,15 @@ ifeq ($(TARGET),CJMCU) LD_SCRIPT = $(ROOT)/stm32_flash_f103_64k.ld endif +ifeq ($(OPBL),yes) +ifneq ($(filter $(TARGET),$(OPBL_VALID_TARGETS)),) +LD_SCRIPT = $(ROOT)/stm32_flash_f103_128k_opbl.ld +.DEFAULT_GOAL := binary +else +$(error OPBL specified with a unsupported target) +endif +endif + CJMCU_SRC = startup_stm32f10x_md_gcc.S \ drivers/adc.c \ drivers/adc_stm32f10x.c \ @@ -450,7 +465,7 @@ ifeq ($(filter $(TARGET),$(VALID_TARGETS)),) $(error Target '$(TARGET)' is not valid, must be one of $(VALID_TARGETS)) endif - +TARGET_BIN = $(BIN_DIR)/$(FORKNAME)_$(TARGET).bin TARGET_HEX = $(BIN_DIR)/$(FORKNAME)_$(TARGET).hex TARGET_ELF = $(OBJECT_DIR)/$(FORKNAME)_$(TARGET).elf TARGET_OBJS = $(addsuffix .o,$(addprefix $(OBJECT_DIR)/$(TARGET)/,$(basename $($(TARGET)_SRC)))) @@ -462,6 +477,9 @@ TARGET_MAP = $(OBJECT_DIR)/$(FORKNAME)_$(TARGET).map $(TARGET_HEX): $(TARGET_ELF) $(OBJCOPY) -O ihex --set-start 0x8000000 $< $@ +$(TARGET_BIN): $(TARGET_ELF) + $(OBJCOPY) -O binary $< $@ + $(TARGET_ELF): $(TARGET_OBJS) $(CC) -o $@ $^ $(LDFLAGS) $(SIZE) $(TARGET_ELF) @@ -483,7 +501,7 @@ $(OBJECT_DIR)/$(TARGET)/%.o: %.S @$(CC) -c -o $@ $(ASFLAGS) $< clean: - rm -f $(TARGET_HEX) $(TARGET_ELF) $(TARGET_OBJS) $(TARGET_MAP) + rm -f $(TARGET_BIN) $(TARGET_HEX) $(TARGET_ELF) $(TARGET_OBJS) $(TARGET_MAP) rm -rf $(OBJECT_DIR)/$(TARGET) flash_$(TARGET): $(TARGET_HEX) @@ -493,6 +511,7 @@ flash_$(TARGET): $(TARGET_HEX) flash: flash_$(TARGET) +binary: $(TARGET_BIN) unbrick_$(TARGET): $(TARGET_HEX) stty -F $(SERIAL_DEVICE) raw speed 115200 -crtscts cs8 -parenb -cstopb -ixon diff --git a/src/main/drivers/system.c b/src/main/drivers/system.c index 3d4b102843..7c032314ba 100755 --- a/src/main/drivers/system.c +++ b/src/main/drivers/system.c @@ -93,7 +93,12 @@ void systemInit(bool overclock) // Configure the Flash Latency cycles and enable prefetch buffer SetSysClock(overclock); #endif +#ifdef CC3D + /* Accounts for OP Bootloader, set the Vector Table base address as specified in .ld file */ + extern void *isr_vector_table_base; + NVIC_SetVectorTable((uint32_t)&isr_vector_table_base, 0x0); +#endif // Configure NVIC preempt/priority groups NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); diff --git a/stm32_flash_f103_128k.ld b/stm32_flash_f103_128k.ld index bd38d01c32..d9f21c5047 100644 --- a/stm32_flash_f103_128k.ld +++ b/stm32_flash_f103_128k.ld @@ -34,6 +34,7 @@ SECTIONS .isr_vector : { . = ALIGN(4); + PROVIDE (isr_vector_table_base = .); KEEP(*(.isr_vector)) /* Startup code */ . = ALIGN(4); } >FLASH @@ -90,7 +91,7 @@ SECTIONS _sidata = .; /* Initialized data sections goes into RAM, load LMA copy after code */ - .data : + .data : { . = ALIGN(4); _sdata = .; /* create a global symbol at data start */ diff --git a/stm32_flash_f103_128k_opbl.ld b/stm32_flash_f103_128k_opbl.ld new file mode 100644 index 0000000000..24d1d463a8 --- /dev/null +++ b/stm32_flash_f103_128k_opbl.ld @@ -0,0 +1,152 @@ +/* +***************************************************************************** +** +** File : stm32_flash.ld +** +** Abstract : Linker script for STM32F103CB Device with +** 128KByte FLASH, 20KByte RAM +** +***************************************************************************** +*/ + +/* Entry Point */ +ENTRY(Reset_Handler) + +/* Highest address of the user mode stack */ +_estack = 0x20005000; /* end of 20K RAM */ + +/* Generate a link error if heap and stack don't fit into RAM */ +_Min_Heap_Size = 0; /* required amount of heap */ +_Min_Stack_Size = 0x400; /* required amount of stack */ + +/* Specify the memory areas. Flash is limited for last 2K for configuration storage */ +MEMORY +{ + FLASH (rx) : ORIGIN = 0x08003000, LENGTH = 126K - 0x03000 /* last 2kb used for config storage first 12k for OP Bootloader*/ + + RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 20K + MEMORY_B1 (rx) : ORIGIN = 0x60000000, LENGTH = 0K +} + +/* Define output sections */ +SECTIONS +{ + /* The startup code goes first into FLASH */ + .isr_vector : + { + . = ALIGN(4); + PROVIDE (isr_vector_table_base = .); + KEEP(*(.isr_vector)) /* Startup code */ + . = ALIGN(4); + } >FLASH + + /* The program code and other data goes into FLASH */ + .text : + { + . = ALIGN(4); + *(.text) /* .text sections (code) */ + *(.text*) /* .text* sections (code) */ + *(.rodata) /* .rodata sections (constants, strings, etc.) */ + *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ + *(.glue_7) /* glue arm to thumb code */ + *(.glue_7t) /* glue thumb to arm code */ + *(.eh_frame) + + KEEP (*(.init)) + KEEP (*(.fini)) + + . = ALIGN(4); + _etext = .; /* define a global symbols at end of code */ + } >FLASH + + + .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH + .ARM : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >FLASH + + .preinit_array : + { + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array*)) + PROVIDE_HIDDEN (__preinit_array_end = .); + } >FLASH + .init_array : + { + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array*)) + PROVIDE_HIDDEN (__init_array_end = .); + } >FLASH + .fini_array : + { + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP (*(.fini_array*)) + KEEP (*(SORT(.fini_array.*))) + PROVIDE_HIDDEN (__fini_array_end = .); + } >FLASH + + /* used by the startup to initialize data */ + _sidata = .; + + /* Initialized data sections goes into RAM, load LMA copy after code */ + .data : + { + . = ALIGN(4); + _sdata = .; /* create a global symbol at data start */ + *(.data) /* .data sections */ + *(.data*) /* .data* sections */ + + . = ALIGN(4); + _edata = .; /* define a global symbol at data end */ + } >RAM AT> FLASH + + /* Uninitialized data section */ + . = ALIGN(4); + .bss : + { + /* This is used by the startup in order to initialize the .bss secion */ + _sbss = .; /* define a global symbol at bss start */ + __bss_start__ = _sbss; + *(.bss) + *(.bss*) + *(COMMON) + + . = ALIGN(4); + _ebss = .; /* define a global symbol at bss end */ + __bss_end__ = _ebss; + } >RAM + + /* User_heap_stack section, used to check that there is enough RAM left */ + ._user_heap_stack : + { + . = ALIGN(4); + PROVIDE ( end = . ); + PROVIDE ( _end = . ); + . = . + _Min_Heap_Size; + . = . + _Min_Stack_Size; + . = ALIGN(4); + } >RAM + + /* MEMORY_bank1 section, code must be located here explicitly */ + /* Example: extern int foo(void) __attribute__ ((section (".mb1text"))); */ + .memory_b1_text : + { + *(.mb1text) /* .mb1text sections (code) */ + *(.mb1text*) /* .mb1text* sections (code) */ + *(.mb1rodata) /* read-only data (constants) */ + *(.mb1rodata*) + } >MEMORY_B1 + + /* Remove information from the standard libraries */ + /DISCARD/ : + { + libc.a ( * ) + libm.a ( * ) + libgcc.a ( * ) + } + + .ARM.attributes 0 : { *(.ARM.attributes) } +}