Add rules.mk defaults for f103,f072,f042 (#7704)

* Add rules.mk defaults for f103,f072,f042

* Add rules.mk defaults for f103,f072,f042 - remove comment

* Add rules.mk defaults for f103,f072,f042 - align USE_FPU

* Reset MCU to avoid build issues

* Move essential config values to top and remove ability for override

* Align DFU_SUFFIX_ARGS order with DFU_ARGS

quantum/mcu_selection.mk

@@ -1,9 +1,15 @@
 ifneq ($(findstring STM32F303, $(MCU)),)
+  # Cortex version
+  MCU = cortex-m4
+
+  # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+  ARMV = 7
+
   ## chip/board settings
   # - the next two should match the directories in
   #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
-  MCU_FAMILY ?= STM32
-  MCU_SERIES ?= STM32F3xx
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32F3xx
 
   # Linker script to use
   # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
@@ -18,22 +24,110 @@ ifneq ($(findstring STM32F303, $(MCU)),)
   # <keyboard_dir>/boards/, or drivers/boards/
   BOARD ?= GENERIC_STM32_F303XC
 
+  USE_FPU ?= yes
+
+  # Options to pass to dfu-util when flashing
+  DFU_ARGS ?= -d 0483:df11 -a 0 -s 0x08000000:leave
+  DFU_SUFFIX_ARGS ?= -v 0483 -p df11
+endif
+
+ifneq ($(findstring STM32F072, $(MCU)),)
   # Cortex version
-  MCU = cortex-m4
+  MCU = cortex-m0
+
+  # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+  ARMV = 6
+
+  ## chip/board settings
+  # - the next two should match the directories in
+  #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32F0xx
+
+  # Linker script to use
+  # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+  #   or <keyboard_dir>/ld/
+  MCU_LDSCRIPT ?= STM32F072xB
+
+  # Startup code to use
+  #  - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+  MCU_STARTUP ?= stm32f0xx
+
+  # Board: it should exist either in <chibios>/os/hal/boards/,
+  # <keyboard_dir>/boards/, or drivers/boards/
+  BOARD ?= ST_STM32F072B_DISCOVERY
+
+  USE_FPU ?= no
+
+  # Options to pass to dfu-util when flashing
+  DFU_ARGS ?= -d 0483:df11 -a 0 -s 0x08000000:leave
+  DFU_SUFFIX_ARGS ?= -v 0483 -p df11
+endif
+
+ifneq ($(findstring STM32F042, $(MCU)),)
+  # Cortex version
+  MCU = cortex-m0
+
+  # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+  ARMV = 6
+
+  ## chip/board settings
+  # - the next two should match the directories in
+  #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32F0xx
+
+  # Linker script to use
+  # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+  #   or <keyboard_dir>/ld/
+  MCU_LDSCRIPT ?= STM32F042x6
+
+  # Startup code to use
+  #  - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+  MCU_STARTUP ?= stm32f0xx
+
+  # Board: it should exist either in <chibios>/os/hal/boards/,
+  # <keyboard_dir>/boards/, or drivers/boards/
+  BOARD ?= GENERIC_STM32_F042X6
+
+  USE_FPU ?= no
+
+  # Options to pass to dfu-util when flashing
+  DFU_ARGS ?= -d 0483:df11 -a 0 -s 0x08000000:leave
+  DFU_SUFFIX_ARGS ?= -v 0483 -p df11
+endif
+
+ifneq ($(findstring STM32F103, $(MCU)),)
+  # Cortex version
+  MCU = cortex-m3
 
   # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
-  ARMV ?= 7
+  ARMV = 7
 
-  USE_FPU = yes
+  ## chip/board settings
+  # - the next two should match the directories in
+  #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32F1xx
+
+  # Linker script to use
+  # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+  #   or <keyboard_dir>/ld/
+  MCU_LDSCRIPT ?= STM32F103x8
+
+  # Startup code to use
+  #  - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+  MCU_STARTUP ?= stm32f1xx
+
+  # Board: it should exist either in <chibios>/os/hal/boards/,
+  # <keyboard_dir>/boards/, or drivers/boards/
+  BOARD ?= GENERIC_STM32_F103
 
-  # Vector table for application
-  # 0x00000000-0x00001000 area is occupied by bootloader.*/
-  # The CORTEX_VTOR... is needed only for MCHCK/Infinity KB
-  # OPT_DEFS = -DCORTEX_VTOR_INIT=0x08005000
+  USE_FPU ?= no
 
   # Options to pass to dfu-util when flashing
   DFU_ARGS ?= -d 0483:df11 -a 0 -s 0x08000000:leave
-  DFU_SUFFIX_ARGS = -p DF11 -v 0483
+  DFU_SUFFIX_ARGS ?= -v 0483 -p df11
 endif
 
 ifneq (,$(filter $(MCU),atmega16u2 atmega32u2 atmega16u4 atmega32u4 at90usb646 at90usb1286))