W5500 ethernet driver

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "ext/mcux-sdk"]
 	path = ext/mcux-sdk
 	url = https://github.com/NXPmicro/mcux-sdk
+[submodule "ext/gecko_sdk"]
+	path = ext/gecko_sdk
+	url = https://github.com/SiliconLabs/gecko_sdk

demos/SILABS/RT-EFR32FG14P-SLWSTK6061B/Makefile

@@ -0,0 +1,198 @@
+##############################################################################
+# Build global options
+# NOTE: Can be overridden externally.
+#
+
+# Compiler options here.
+ifeq ($(USE_OPT),)
+  USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
+endif
+
+# C specific options here (added to USE_OPT).
+ifeq ($(USE_COPT),)
+  USE_COPT = 
+endif
+
+# C++ specific options here (added to USE_OPT).
+ifeq ($(USE_CPPOPT),)
+  USE_CPPOPT = -fno-rtti
+endif
+
+# Enable this if you want the linker to remove unused code and data.
+ifeq ($(USE_LINK_GC),)
+  USE_LINK_GC = yes
+endif
+
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
+# Enable this if you want link time optimizations (LTO).
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
+# Enable this if you want to see the full log while compiling.
+ifeq ($(USE_VERBOSE_COMPILE),)
+  USE_VERBOSE_COMPILE = yes
+endif
+
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
+#
+# Build global options
+##############################################################################
+
+##############################################################################
+# Architecture or project specific options
+#
+
+# Stack size to be allocated to the Cortex-M process stack. This stack is
+# the stack used by the main() thread.
+ifeq ($(USE_PROCESS_STACKSIZE),)
+  USE_PROCESS_STACKSIZE = 0x400
+endif
+
+# Stack size to the allocated to the Cortex-M main/exceptions stack. This
+# stack is used for processing interrupts and exceptions.
+ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
+  USE_EXCEPTIONS_STACKSIZE = 0x400
+endif
+
+# Enables the use of FPU (no, softfp, hard).
+ifeq ($(USE_FPU),)
+  USE_FPU = no
+endif
+
+# FPU-related options.
+ifeq ($(USE_FPU_OPT),)
+  USE_FPU_OPT = -mfloat-abi=$(USE_FPU) -mfpu=fpv4-sp-d16
+endif
+
+#
+# Architecture or project specific options
+##############################################################################
+
+##############################################################################
+# Project, target, sources and paths
+#
+
+# Define project name here
+PROJECT = ch
+
+# Target settings.
+MCU  = cortex-m4
+
+# Imported source files and paths.
+CHIBIOS := ../../../../ChibiOS
+CHIBIOS_CONTRIB := $(CHIBIOS)/../ChibiOS-Contrib
+CONFDIR  := ./cfg
+BUILDDIR := ./build
+DEPDIR   := ./.dep
+
+# Licensing files.
+include $(CHIBIOS)/os/license/license.mk
+# Startup files.
+include $(CHIBIOS_CONTRIB)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_efr32fg14p23x.mk
+# HAL-OSAL files (optional).
+include $(CHIBIOS)/os/hal/hal.mk
+include $(CHIBIOS_CONTRIB)/os/hal/ports/SILABS/EFR32FG14P/platform.mk
+include $(CHIBIOS_CONTRIB)/os/hal/boards/SILABS_SLWSTK6061B/board.mk
+include $(CHIBIOS)/os/hal/osal/rt-nil/osal.mk
+# RTOS files (optional).
+include $(CHIBIOS)/os/rt/rt.mk
+include $(CHIBIOS)/os/common/ports/ARMv7-M/compilers/GCC/mk/port.mk
+# Auto-build files in ./source recursively.
+include $(CHIBIOS)/tools/mk/autobuild.mk
+# Other files (optional).
+#include $(CHIBIOS)/os/test/test.mk
+#include $(CHIBIOS)/test/rt/rt_test.mk
+#include $(CHIBIOS)/test/oslib/oslib_test.mk
+
+# Define linker script file here
+LDSCRIPT= $(STARTUPLD_CONTRIB)/EFR32FG14PXF256.ld
+
+# C sources that can be compiled in ARM or THUMB mode depending on the global
+# setting.
+CSRC = $(ALLCSRC) \
+       $(TESTSRC) \
+       main.c
+
+# C++ sources that can be compiled in ARM or THUMB mode depending on the global
+# setting.
+CPPSRC = $(ALLCPPSRC)
+
+# List ASM source files here.
+ASMSRC = $(ALLASMSRC)
+
+# List ASM with preprocessor source files here.
+ASMXSRC = $(ALLXASMSRC)
+
+# Inclusion directories.
+INCDIR = $(CONFDIR) $(ALLINC) $(TESTINC)
+
+# Define C warning options here.
+CWARN = -Wall -Wextra -Wundef -Wstrict-prototypes
+
+# Define C++ warning options here.
+CPPWARN = -Wall -Wextra -Wundef
+
+#
+# Project, target, sources and paths
+##############################################################################
+
+##############################################################################
+# Start of user section
+#
+
+# List all user C define here, like -D_DEBUG=1
+UDEFS = -DEFR32FG14P233F256GM48 \
+        -DEFR32_HFRCO_STARTUP_FREQ=19000000UL \
+        -DEFR32_LFXO_FREQ=32768UL \
+        -DEFR32_HFXO_FREQ=38400000UL \
+        -DCORTEX_ENABLE_WFI_IDLE
+
+# Define ASM defines here
+UADEFS = -DEFR32FG14P233F256GM48=1 \
+         -DEFR32_HFRCO_STARTUP_FREQ=19000000UL \
+         -DEFR32_LFXO_FREQ=32768UL \
+         -DEFR32_HFXO_FREQ=38400000UL \
+         -DCORTEX_ENABLE_WFI_IDLE
+
+# List all user directories here
+UINCDIR =
+
+# List the user directory to look for the libraries here
+ULIBDIR =
+
+# List all user libraries here
+ULIBS =
+
+#
+# End of user section
+##############################################################################
+
+##############################################################################
+# Common rules
+#
+
+RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk
+include $(RULESPATH)/arm-none-eabi.mk
+include $(RULESPATH)/rules.mk
+
+#
+# Common rules
+##############################################################################
+
+##############################################################################
+# Custom rules
+#
+
+#
+# Custom rules
+##############################################################################