stmhal: Make ld and af files configurable within Makefile.

Each board now needs an mpconfigboard.mk file which defines AF_FILE and
LD_FILE.

Also moved stm32f405.ld to boards/ directory to keep things organised.

stmhal/Makefile

@@ -10,6 +10,7 @@ BUILD ?= build-$(BOARD)
 
 include ../py/mkenv.mk
 -include mpconfigport.mk
+include boards/$(BOARD)/mpconfigboard.mk
 
 # qstr definitions (must come before including py.mk)
 QSTR_DEFS = qstrdefsport.h $(BUILD)/pins_qstr.h
@@ -45,7 +46,7 @@ CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -m
 CFLAGS = $(INC) -Wall -Wpointer-arith -Werror -ansi -std=gnu99 -nostdlib $(CFLAGS_MOD) $(CFLAGS_CORTEX_M4) $(COPT)
 CFLAGS += -Iboards/$(BOARD)
 
-LDFLAGS = -nostdlib -T stm32f405.ld -Map=$(@:.elf=.map) --cref
+LDFLAGS = -nostdlib -T $(LD_FILE) -Map=$(@:.elf=.map) --cref
 LIBS =
 
 # Debugging/Optimization
@@ -275,7 +276,6 @@ $(BUILD)/firmware.elf: $(OBJ)
 
 MAKE_PINS = boards/make-pins.py
 BOARD_PINS = boards/$(BOARD)/pins.csv
-AF_FILE = boards/stm32f4xx_af.csv
 PREFIX_FILE = boards/stm32f4xx_prefix.c
 GEN_PINS_SRC = $(BUILD)/pins_$(BOARD).c
 GEN_PINS_HDR = $(HEADER_BUILD)/pins.h

stmhal/boards/CERB40/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/HYDRABUS/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/PYBV10/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/PYBV3/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/PYBV4/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld

stmhal/boards/STM32F4DISC/mpconfigboard.mk

@@ -0,0 +1,2 @@
+AF_FILE = boards/stm32f405_af.csv
+LD_FILE = boards/stm32f405.ld