add nds32 bare-metal toolchain support

6 files changed, 76 insertions, 0 deletions

diff --git a/target/arch.lst b/target/arch.lst
index 2220ac21f..4c4cfa33d 100644
--- a/target/arch.lst
+++ b/target/arch.lst
@@ -16,6 +16,7 @@ metag
 microblaze
 mips
 mips64
+nds32
 nios2
 or1k
 ppc
diff --git a/target/config/Config.in.cpu b/target/config/Config.in.cpu
index 7ca935f74..89f5a68ab 100644
--- a/target/config/Config.in.cpu
+++ b/target/config/Config.in.cpu
@@ -844,6 +844,11 @@ config ADK_CPU_MICROBLAZE
 	select ADK_TARGET_WITH_MMU if !ADK_LINUX_UCLINUX
 	select ADK_TARGET_WITH_NPTL if ADK_TARGET_LIB_GLIBC || ADK_TARGET_LIB_MUSL
 
+config ADK_CPU_NDS32
+	bool
+	select ADK_TARGET_WITH_NPTL
+	select ADK_TARGET_WITH_MMU
+
 config ADK_CPU_NIOS2
 	bool
 	select ADK_TARGET_WITH_LT if ADK_TARGET_LIB_UCLIBC_NG
@@ -1377,6 +1382,8 @@ config ADK_TARGET_CPU_ARCH
 	default "mips64el" if ADK_TARGET_ARCH_MIPS64 && ADK_TARGET_LITTLE_ENDIAN
 	default "mips" if ADK_TARGET_ARCH_MIPS && ADK_TARGET_BIG_ENDIAN
 	default "mipsel" if ADK_TARGET_ARCH_MIPS && ADK_TARGET_LITTLE_ENDIAN
+	default "nds32le" if ADK_TARGET_ARCH_NDS32 && ADK_TARGET_LITTLE_ENDIAN
+	default "nds32be" if ADK_TARGET_ARCH_NDS32 && ADK_TARGET_BIG_ENDIAN
 	default "nios2" if ADK_TARGET_ARCH_NIOS2
 	default "or1k" if ADK_TARGET_ARCH_OR1K
 	default "ppc" if ADK_TARGET_ARCH_PPC
diff --git a/target/config/Config.in.endian b/target/config/Config.in.endian
index 599f878f9..cd1151a4e 100644
--- a/target/config/Config.in.endian
+++ b/target/config/Config.in.endian
@@ -10,6 +10,7 @@ depends on ADK_TARGET_ARCH_ARC \
 	|| ADK_TARGET_ARCH_MICROBLAZE \
 	|| ADK_TARGET_ARCH_MIPS \
 	|| ADK_TARGET_ARCH_MIPS64 \
+	|| ADK_TARGET_ARCH_NDS32 \
 	|| ADK_TARGET_ARCH_PPC64 \
 	|| ADK_TARGET_ARCH_SH \
 	|| ADK_TARGET_ARCH_XTENSA
diff --git a/target/config/Config.in.libc b/target/config/Config.in.libc
index d1fb33f7f..9c68fdbec 100644
--- a/target/config/Config.in.libc
+++ b/target/config/Config.in.libc
@@ -8,6 +8,7 @@ config ADK_TARGET_LIB_UCLIBC_NG
 	bool "uClibc-ng embedded C library"
 	depends on \
 		   !ADK_TARGET_ARCH_AARCH64 && \
+		   !ADK_TARGET_ARCH_NDS32 && \
 		   !ADK_TARGET_ARCH_S390 && \
 		   !ADK_TARGET_ARCH_SPARC64 && \
 		   !ADK_TARGET_ARCH_PPC64 && \
@@ -39,6 +40,7 @@ config ADK_TARGET_LIB_GLIBC
 	depends on !ADK_TARGET_ARCH_BFIN
 	depends on !ADK_TARGET_ARCH_CRIS
 	depends on !ADK_TARGET_ARCH_H8300
+	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_ARCH_XTENSA
 	depends on !ADK_TARGET_UCLINUX
 	depends on !ADK_TARGET_WITHOUT_MMU
@@ -57,6 +59,7 @@ config ADK_TARGET_LIB_NEWLIB
 		ADK_TARGET_ARCH_LM32 || \
 		ADK_TARGET_ARCH_MICROBLAZE || \
 		ADK_TARGET_ARCH_MIPS || \
+		ADK_TARGET_ARCH_NDS32 || \
 		ADK_TARGET_ARCH_OR1K || \
 		ADK_TARGET_ARCH_PPC || \
 		ADK_TARGET_ARCH_SPARC || \
diff --git a/target/nds32/Makefile b/target/nds32/Makefile
new file mode 100644
index 000000000..3d8f8d42b
--- /dev/null
+++ b/target/nds32/Makefile
@@ -0,0 +1,56 @@
+# 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
+include $(ADK_TOPDIR)/mk/kernel-build.mk
+include $(ADK_TOPDIR)/mk/image.mk
+
+KERNEL:=$(LINUX_DIR)/$(ADK_TARGET_KERNEL)
+
+# target helper text
+ifeq ($(ADK_TARGET_FS),archive)
+targethelp:
+	@echo "The RootFS tarball is: $(FW_DIR)/$(ROOTFSTARBALL)"
+endif
+ifeq ($(ADK_TARGET_FS),initramfs)
+targethelp:
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo 'The initramfs image is: ${FW_DIR}/${INITRAMFS}'
+endif
+ifeq ($(ADK_TARGET_FS),initramfsarchive)
+targethelp:
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo "The RootFS tarball is: $(FW_DIR)/$(ROOTFSUSERTARBALL)"
+endif
+ifeq ($(ADK_TARGET_FS),initramfspiggyback)
+targethelp:
+	@echo 'The kernel+initramfs file is: $(FW_DIR)/${TARGET_KERNEL}'
+endif
+ifeq ($(ADK_TARGET_FS),nfsroot)
+targethelp:
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo "The RootFS tarball is: $(FW_DIR)/$(ROOTFSUSERTARBALL)"
+endif
+
+kernel-strip:
+	@cp $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
+
+kernel-install: kernel-strip
+	@cp $(BUILD_DIR)/$(TARGET_KERNEL) $(FW_DIR)/$(TARGET_KERNEL)
+
+# filesystem specific targets
+ifeq ($(ADK_TARGET_FS),archive)
+imageinstall: $(FW_DIR)/$(ROOTFSTARBALL) targethelp
+endif
+ifeq ($(ADK_TARGET_FS),initramfs)
+imageinstall: kernel-install $(FW_DIR)/$(INITRAMFS) targethelp
+endif
+ifeq ($(ADK_TARGET_FS),initramfsarchive)
+imageinstall: kernel-install $(FW_DIR)/$(ROOTFSUSERTARBALL) targethelp
+endif
+ifeq ($(ADK_TARGET_FS),initramfspiggyback)
+imageinstall: createinitramfs targethelp
+endif
+ifeq ($(ADK_TARGET_FS),nfsroot)
+imageinstall: kernel-install $(FW_DIR)/$(ROOTFSUSERTARBALL) targethelp
+endif
diff --git a/target/nds32/systems/toolchain-nds32 b/target/nds32/systems/toolchain-nds32
new file mode 100644
index 000000000..268f5289c
--- /dev/null
+++ b/target/nds32/systems/toolchain-nds32
@@ -0,0 +1,8 @@
+config ADK_TARGET_SYSTEM_TOOLCHAIN_NDS32
+	bool "Toolchain only"
+	select ADK_CPU_NDS32
+	select ADK_TARGET_TOOLCHAIN
+	select ADK_TARGET_PACKAGE_TXZ
+	help
+	  NDS32 toolchain.
+