add basic zephyr experiments, add xtensa newlib support

6 files changed, 65 insertions, 2 deletions

diff --git a/target/Makefile b/target/Makefile
index 99e0fff14..9882e4d84 100644
--- a/target/Makefile
+++ b/target/Makefile
@@ -140,6 +140,11 @@ config-prepare: $(ADK_TOPDIR)/.config
 	    >$(BUILD_DIR)/.frostedapps
 endif
 
+ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
+config-prepare: $(ADK_TOPDIR)/.config
+	echo foo
+endif
+
 ifeq ($(ADK_TARGET_OS_FROSTED),y)
 prepare: frosted-prepare
 compile: frosted-compile
@@ -147,6 +152,13 @@ install: frosted-install
 targethelp: frosted-targethelp
 endif
 
+ifeq ($(ADK_TARGET_OS_ZEPHYR),y)
+prepare: zephyr-prepare
+compile: zephyr-compile
+install: zephyr-install
+targethelp: zephyr-targethelp
+endif
+
 ifeq ($(ADK_TARGET_OS_LINUX),y)
 prepare: $(ADK_TARGET_ARCH)-prepare
 compile: $(ADK_TARGET_ARCH)-compile
diff --git a/target/config/Config.in.libc b/target/config/Config.in.libc
index 76c36e044..91ce9f091 100644
--- a/target/config/Config.in.libc
+++ b/target/config/Config.in.libc
@@ -127,7 +127,9 @@ config ADK_TARGET_LIB_NEWLIB
 		ADK_TARGET_ARCH_X86 || \
 		ADK_TARGET_ARCH_X86_64 || \
 		ADK_TARGET_ARCH_XTENSA) && \
-		(ADK_TARGET_OS_BAREMETAL || ADK_TARGET_OS_FROSTED)
+		(ADK_TARGET_OS_BAREMETAL || \
+		 ADK_TARGET_OS_FROSTED || \
+		 ADK_TARGET_OS_ZEPHYR )
 	help
 	  https://sourceware.org/newlib/
 
@@ -166,12 +168,19 @@ config ADK_TARGET_LIB_MUSL_GIT
 
 config ADK_TARGET_LIB_NEWLIB_2_5_0
 	bool "2.5.0"
-	depends on ADK_TARGET_LIB_NEWLIB && !ADK_TARGET_ARCH_RISCV && !ADK_TARGET_OS_FROSTED
+	depends on ADK_TARGET_LIB_NEWLIB \
+		&& !ADK_TARGET_ARCH_RISCV \
+		&& !ADK_TARGET_ARCH_XTENSA \
+		&& !ADK_TARGET_OS_FROSTED
 
 config ADK_TARGET_LIB_NEWLIB_RISCV
 	bool "2.4.0-riscv"
 	depends on ADK_TARGET_LIB_NEWLIB && ADK_TARGET_ARCH_RISCV
 
+config ADK_TARGET_LIB_NEWLIB_XTENSA
+	bool "xtensa"
+	depends on ADK_TARGET_LIB_NEWLIB && ADK_TARGET_ARCH_XTENSA
+
 config ADK_TARGET_LIB_NEWLIB_FROSTED
 	bool "frosted-git"
 	depends on ADK_TARGET_LIB_NEWLIB && ADK_TARGET_OS_FROSTED
diff --git a/target/config/Config.in.os b/target/config/Config.in.os
index 2eb420e14..6d77dfa4b 100644
--- a/target/config/Config.in.os
+++ b/target/config/Config.in.os
@@ -14,6 +14,11 @@ config ADK_TARGET_OS_FROSTED
 	help
 	  Create a frosted appliance or toolchain.
 
+config ADK_TARGET_OS_ZEPHYR
+	bool "Zephyr"
+	help
+	  Create a zephyr appliance or toolchain.
+
 config ADK_TARGET_OS_BAREMETAL
 	bool "Bare metal"
 	help
diff --git a/target/zephyr/Config.in b/target/zephyr/Config.in
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/target/zephyr/Config.in
diff --git a/target/zephyr/Makefile b/target/zephyr/Makefile
new file mode 100644
index 000000000..2f937225c
--- /dev/null
+++ b/target/zephyr/Makefile
@@ -0,0 +1,33 @@
+# This file is part of the OpenADK project. OpenADK is copyrighted
+# material, please see the LICENCE file in the top-level directory.
+
+include $(ADK_TOPDIR)/rules.mk
+
+prepare:
+	if [ ! -d $(BUILD_DIR)/zephyr ]; then \
+		cd $(BUILD_DIR) ;\
+		git clone https://github.com/zephyrproject-rtos/zephyr.git ;\
+	fi
+	if [ ! -d $(BUILD_DIR)/zephyr-kconfig ]; then \
+		mkdir $(BUILD_DIR)/zephyr-kconfig ;\
+	fi
+	cd $(BUILD_DIR)/zephyr-kconfig && \
+		PATH='$(HOST_PATH)' cmake $(BUILD_DIR)/zephyr/scripts && \
+		make
+	source $(BUILD_DIR)/zephyr/zephyr-env.sh
+
+compile:
+	export GCCXTENSA_TOOLCHAIN_PATH="$(TOOLCHAIN_DIR)"
+	export ZEPHYR_GCC_VARIANT=gccxtensa
+	if [ ! -d $(BUILD_DIR)/zephyr/samples/hello_world/build ]; then \
+		mkdir $(BUILD_DIR)/zephyr/samples/hello_world/build ;\
+	fi
+	cd $(BUILD_DIR)/zephyr/samples/hello_world/build && \
+		cmake -DBOARD=qemu_xtensa .. && \
+		make
+
+install:
+
+targethelp:
+
+clean:
diff --git a/target/zephyr/arch.lst b/target/zephyr/arch.lst
new file mode 100644
index 000000000..951bee724
--- /dev/null
+++ b/target/zephyr/arch.lst
@@ -0,0 +1,4 @@
+arc
+arm
+x86_64
+xtensa