From 96469d9a078d67af6e66f9bee068371e2e2d9918 Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@uclibc-ng.org>
Date: Sat, 14 May 2016 02:18:57 +0200
Subject: some basic qemu nios2 support

---
 target/nios2/Makefile           | 75 +++++++++++++++++++++++++++++++++++++++++
 target/nios2/kernel/qemu-nios2  |  1 +
 target/nios2/systems/qemu-nios2 |  8 +++++
 3 files changed, 84 insertions(+)
 create mode 100644 target/nios2/kernel/qemu-nios2
 create mode 100644 target/nios2/systems/qemu-nios2

(limited to 'target/nios2')

diff --git a/target/nios2/Makefile b/target/nios2/Makefile
index 03afae8f0..f348c6cd7 100644
--- a/target/nios2/Makefile
+++ b/target/nios2/Makefile
@@ -5,3 +5,78 @@ include $(ADK_TOPDIR)/rules.mk
 include $(ADK_TOPDIR)/mk/kernel-build.mk
 include $(ADK_TOPDIR)/mk/image.mk
 
+KERNEL:=$(LINUX_DIR)/vmlinux
+QEMU_ARGS+=-M 10m50-ghrd -dtb $(FW_DIR)/10m50_devboard.dtb
+QEMU_ARGS+=${ADK_QEMU_ARGS}
+
+# target helper text
+ifeq ($(ADK_TARGET_FS),archive)
+targethelp:
+	@echo "The RootFS tarball is: $(FW_DIR)/$(ROOTFSTARBALL)"
+ifeq ($(ADK_TARGET_QEMU),y)
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo "Use following command to create a QEMU Image:"
+	@echo "./scripts/create.sh qemu-${ADK_TARGET_CPU_ARCH}.img $(FW_DIR)/$(ROOTFSTARBALL)"
+	@echo "Start qemu with following options:"
+	@echo 'qemu-system-${ADK_TARGET_CPU_ARCH} ${QEMU_ARGS} -kernel $(FW_DIR)/$(TARGET_KERNEL) qemu-${ADK_TARGET_CPU_ARCH}.img'
+endif
+endif
+ifeq ($(ADK_TARGET_FS),initramfs)
+targethelp:
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo 'The initramfs image is: ${FW_DIR}/${INITRAMFS}'
+ifeq ($(ADK_TARGET_QEMU),y)
+	@echo "Start qemu with following command line:"
+	@echo 'qemu-system-${ADK_TARGET_CPU_ARCH} ${QEMU_ARGS} -kernel $(FW_DIR)/$(TARGET_KERNEL) -initrd ${FW_DIR}/${INITRAMFS}'
+endif
+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}'
+ifeq ($(ADK_TARGET_QEMU),y)
+	@echo "Start qemu with following command line:"
+	@echo 'qemu-system-${ADK_TARGET_CPU_ARCH} ${QEMU_ARGS} -kernel $(FW_DIR)/$(TARGET_KERNEL)'
+endif
+endif
+ifeq ($(ADK_TARGET_FS),nfsroot)
+targethelp:
+	@echo 'The kernel file is: $(FW_DIR)/${TARGET_KERNEL}'
+	@echo 'The nfs root tarball is: ${FW_DIR}/${ROOTFSUSERTARBALL}'
+endif
+
+# image creation and kernel install
+kernel-strip:
+	cp $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
+
+kernel-install: kernel-strip
+	@cp $(BUILD_DIR)/$(TARGET_KERNEL) $(FW_DIR)/$(TARGET_KERNEL)
+
+dtb-install:
+	env $(KERNEL_MAKE_ENV) $(MAKE) -C "${LINUX_DIR}" $(KERNEL_MAKE_OPTS) \
+		10m50_devboard.dtb $(MAKE_TRACE)
+	for x in $(LINUX_DIR)/arch/nios2/boot/*.dtb; do \
+		[[ -e "$$x" ]] && cp $(LINUX_DIR)/arch/nios2/boot/*.dtb $(FW_DIR); \
+		break; \
+	done
+
+# filesystem specific targets
+ifeq ($(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 ($(ADK_TARGET_FS),initramfspiggyback)
+imageinstall: dtb-install createinitramfs targethelp
+endif
+ifeq ($(ADK_TARGET_FS),nfsroot)
+imageinstall: kernel-install $(FW_DIR)/$(ROOTFSUSERTARBALL) targethelp
+endif
diff --git a/target/nios2/kernel/qemu-nios2 b/target/nios2/kernel/qemu-nios2
new file mode 100644
index 000000000..e7515909e
--- /dev/null
+++ b/target/nios2/kernel/qemu-nios2
@@ -0,0 +1 @@
+CONFIG_NIOS2=y
diff --git a/target/nios2/systems/qemu-nios2 b/target/nios2/systems/qemu-nios2
new file mode 100644
index 000000000..97cfe6821
--- /dev/null
+++ b/target/nios2/systems/qemu-nios2
@@ -0,0 +1,8 @@
+config ADK_TARGET_SYSTEM_QEMU_NIOS2
+	bool "Qemu Emulator"
+	select ADK_TARGET_QEMU
+	select ADK_TARGET_CPU_NIOS2
+	select ADK_TARGET_KERNEL_WITH_COMPRESSION
+	help
+	  Qemu support for NIOS2 architecture.
+
-- 
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