add tinyusb

tinyusb/hw/bsp/sltb009a/board.mk

@@ -0,0 +1,47 @@
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -nostdlib -nostartfiles \
+  -D__STARTUP_CLEAR_BSS \
+  -D__START=main \
+  -DEFM32GG12B810F1024GM64 \
+  -DCFG_TUSB_MCU=OPT_MCU_EFM32GG12 
+
+# mcu driver cause following warnings
+#CFLAGS += -Wno-error=unused-parameter
+
+SILABS_FAMILY = efm32gg12b
+SILABS_CMSIS = hw/mcu/silabs/cmsis-dfp-$(SILABS_FAMILY)/Device/SiliconLabs/$(shell echo $(SILABS_FAMILY) | tr a-z A-Z)
+
+DEPS_SUBMODULES += hw/mcu/silabs/cmsis-dfp-$(SILABS_FAMILY)
+DEPS_SUBMODULES += lib/CMSIS_5
+
+# All source paths should be relative to the top level.
+LD_FILE = $(SILABS_CMSIS)/Source/GCC/$(SILABS_FAMILY).ld
+
+SRC_C += \
+  $(SILABS_CMSIS)/Source/system_$(SILABS_FAMILY).c \
+  src/portable/silabs/efm32/dcd_efm32.c
+
+SRC_S += \
+  $(SILABS_CMSIS)/Source/GCC/startup_$(SILABS_FAMILY).S
+
+INC += \
+  $(TOP)/lib/CMSIS_5/CMSIS/Core/Include \
+  $(TOP)/$(SILABS_CMSIS)/Include \
+  $(TOP)/hw/bsp/$(BOARD)
+
+# For TinyUSB port source
+VENDOR = silabs
+CHIP_FAMILY = efm32
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM4
+
+# For flash-jlink target
+JLINK_DEVICE = EFM32GG12B810F1024
+
+flash: flash-jlink