ARC: add support for HS38 VDK

Virtualizer Development Kits (VDKs) are software development kits
containing design-specific virtual prototypes as well as debug and
analysis tools and sample software.

With this change we add support for VDK based on ARC HS38 core.

Note that FS-overlay is required to allow instantiation of console on
both serial port and LCD screen simultaneously.

Signed-off-by: Ruud Derwig <[email protected]>
Signed-off-by: Alexey Brodkin <[email protected]>

Author: abrodkin

board/synopsys/hs38_vdk/fs-overlay/etc/inittab

@@ -0,0 +1,41 @@
+# /etc/inittab
+#
+# Copyright (C) 2001 Erik Andersen <[email protected]>
+#
+# Note: BusyBox init doesn't support runlevels.  The runlevels field is
+# completely ignored by BusyBox init. If you want runlevels, use
+# sysvinit.
+#
+# Format for each entry: <id>:<runlevels>:<action>:<process>
+#
+# id        == tty to run on, or empty for /dev/console
+# runlevels == ignored
+# action    == one of sysinit, respawn, askfirst, wait, and once
+# process   == program to run
+
+# Startup the system
+null::sysinit:/bin/mount -t proc proc /proc
+null::sysinit:/bin/mkdir -p /dev/pts
+null::sysinit:/bin/mkdir -p /dev/shm
+null::sysinit:/bin/mount -a
+null::sysinit:/bin/hostname -F /etc/hostname
+# now run any rc scripts
+::sysinit:/etc/init.d/rcS
+
+# Start an "askfirst" shell on the console (whatever that may be)
+#::askfirst:-/bin/sh # ASKFIRST_SHELL
+
+# /sbin/getty invocations for selected ttys
+tty1::respawn:/sbin/getty 115200 tty1
+
+# Put a getty on the serial port
+ttyS3::respawn:/sbin/getty -L ttyS3 115200 vt100
+
+# Stuff to do for the 3-finger salute
+::ctrlaltdel:/sbin/reboot
+
+# Stuff to do before rebooting
+::shutdown:/etc/init.d/rcK
+::shutdown:/sbin/swapoff -a
+::shutdown:/bin/umount -a -r
+

configs/snps_hs38_smp_vdk_defconfig

@@ -0,0 +1,35 @@
+BR2_arcle=y
+BR2_archs38=y
+BR2_TOOLCHAIN_BUILDROOT_LARGEFILE=y
+BR2_TOOLCHAIN_BUILDROOT_INET_IPV6=y
+BR2_TOOLCHAIN_BUILDROOT_INET_RPC=y
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_PTHREAD_DEBUG=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_PACKAGE_HOST_GDB=y
+BR2_TARGET_GENERIC_HOSTNAME="axs103"
+BR2_TARGET_GENERIC_ISSUE="Welcome to the HS38 VDK Software Development Platform"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
+BR2_ROOTFS_OVERLAY="board/synopsys/hs38_vdk/fs-overlay"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_GIT=y
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/foss-for-synopsys-dwc-arc-processors/linux.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="c94171b21313f379b94c06ed2dfc4eab21d42c95"
+BR2_LINUX_KERNEL_DEFCONFIG="hs38_smp_vdk"
+BR2_LINUX_KERNEL_VMLINUX=y
+BR2_PACKAGE_FFMPEG=y
+BR2_PACKAGE_MPLAYER=y
+BR2_PACKAGE_GDB=y
+BR2_PACKAGE_PERF=y
+BR2_PACKAGE_DIRECTFB=y
+# BR2_PACKAGE_DIRECTFB_LINUXINPUT is not set
+# BR2_PACKAGE_DIRECTFB_SVG is not set
+BR2_PACKAGE_DIRECTFB_EXAMPLES=y
+BR2_PACKAGE_DIRECTFB_EXAMPLES_DOK=y
+BR2_PACKAGE_I2C_TOOLS=y
+BR2_PACKAGE_USBUTILS=y
+BR2_PACKAGE_LZO=y
+BR2_PACKAGE_LIBUSB_COMPAT=y
+BR2_PACKAGE_DROPBEAR=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_TAR_GZIP=y

configs/snps_hs38_vdk_defconfig

@@ -0,0 +1,35 @@
+BR2_arcle=y
+BR2_archs38=y
+BR2_TOOLCHAIN_BUILDROOT_LARGEFILE=y
+BR2_TOOLCHAIN_BUILDROOT_INET_IPV6=y
+BR2_TOOLCHAIN_BUILDROOT_INET_RPC=y
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_PTHREAD_DEBUG=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_PACKAGE_HOST_GDB=y
+BR2_TARGET_GENERIC_HOSTNAME="axs103"
+BR2_TARGET_GENERIC_ISSUE="Welcome to the HS38 VDK Software Development Platform"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
+BR2_ROOTFS_OVERLAY="board/synopsys/hs38_vdk/fs-overlay"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_GIT=y
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/foss-for-synopsys-dwc-arc-processors/linux.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="c94171b21313f379b94c06ed2dfc4eab21d42c95"
+BR2_LINUX_KERNEL_DEFCONFIG="hs38_vdk"
+BR2_LINUX_KERNEL_VMLINUX=y
+BR2_PACKAGE_FFMPEG=y
+BR2_PACKAGE_MPLAYER=y
+BR2_PACKAGE_GDB=y
+BR2_PACKAGE_PERF=y
+BR2_PACKAGE_DIRECTFB=y
+# BR2_PACKAGE_DIRECTFB_LINUXINPUT is not set
+# BR2_PACKAGE_DIRECTFB_SVG is not set
+BR2_PACKAGE_DIRECTFB_EXAMPLES=y
+BR2_PACKAGE_DIRECTFB_EXAMPLES_DOK=y
+BR2_PACKAGE_I2C_TOOLS=y
+BR2_PACKAGE_USBUTILS=y
+BR2_PACKAGE_LZO=y
+BR2_PACKAGE_LIBUSB_COMPAT=y
+BR2_PACKAGE_DROPBEAR=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_TAR_GZIP=y