neek: board added; first nios2 board

see comments in nios2.inc and neek.conf
this is still somewhat work in progress and
could use some work

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

conf/machine/include/nios2.inc

@@ -0,0 +1,68 @@
+#@TYPE: Machine configuration
+#@NAME: nios2
+#@DESCRIPTION: generic machine configuration for nios2 with mmu 
+
+# there are some hooks for uclibc in this file
+# however uclibc is not working yet
+
+# LIBC = "uclibc" 
+LIBC = "glibc" 
+# and for the angstrom folks
+ANGSTROMLIBC = "${LIBC}"
+
+# fix up target strings
+# TARGET_PREFIX = "nios2-linux-uclibc-"
+TARGET_PREFIX = "nios2-linux-"
+TARGET_VENDOR_nios2 = ""
+
+# Set default for common nios2-based machines
+MACHINE_FEATURES ?= "kernel26"
+# Select an appropriate default kernel
+
+PREFERRED_PROVIDER_virtual/kernel ?= "linux-nios2"
+
+# for now we pin gcc, glibc and binutils
+# as these are the only versions that have 
+# nios2 support.
+PREFERRED_VERSION_gcc-cross = "4.1.2"
+PREFERRED_VERSION_gcc-cross-initial = "4.1.2"
+PREFERRED_VERSION_gcc-cross-intermediate = "4.1.2"
+PREFERRED_VERSION_binutils = "2.17.50.0.12"
+PREFERRED_VERSION_binutils-cross = "2.17.50.0.12"
+PREFERRED_VERSION_glibc = "2.5"
+PREFERRED_VERSION_glibc-initial = "2.5"
+
+# uclibc does not work yet
+# PREFERRED_VERSION_uclibc = "0.9.30.3"
+# PREFERRED_VERSION_uclibc-initial = "0.9.30.3"
+
+# for now busybox 1.13.2 is the only one
+# patched and tested for nios2 so pin this
+# one too, until the other versions are updated 
+# for nios2 too.
+PREFERRED_VERSION_busybox_nios2 = "1.13.2"
+
+# there are some issues cross-compiling when 
+# using linux-libc-headers-native as we get
+# some native inc dirs when compiling crt stuff
+# ASSUME_PROVIDED fixes this (but breaks compilation
+# on old host systems like red hat 4.
+ASSUME_PROVIDED += "linux-libc-headers-native"
+
+# Set default for 16MB machines - can be overridden for more or less flash.
+ROOT_FLASH_SIZE ?= "12"
+
+# Allow for rootfs loaded direct from internal hard disk
+IMAGE_FSTYPES ?= "jffs2 tar.gz"
+
+# Set default for common ixp4xx-based machines
+EXTRA_IMAGECMD_jffs2 = "--pad --eraseblock=0x20000 -n"
+
+#-------------------------------------------------------------------------------
+# Board defaults
+#-------------------------------------------------------------------------------
+# These values are board specific but they seem to be common to a large number
+# of boards so are reasonable defaults.
+SERIAL_CONSOLE = "115200 ttyS0"
+KERNEL_CONSOLE = "ttyS0,115200n8"
+USE_VT = "0"

conf/machine/neek.conf

@@ -0,0 +1,33 @@
+#@TYPE: Machine
+#@NAME: NEEK machine
+TARGET_ARCH = "nios2"
+
+# This is a machine configuration file for the 
+# NEEK (NIOS2 Embedded Evaluation Kit)
+# the sof file used to develop/tst this is from
+# http://www.nioswiki.com/@api/deki/files/487/=cycloneIII_embedded_evaluation_kit_standard.sof
+
+PREFERRED_PROVIDER_virtual/kernel = "linux-nios2"
+
+EXTRA_IMAGECMD_jffs2 = "-lnp "
+
+# Guesswork
+SERIAL_CONSOLE = "115200 ttyS2"
+
+
+# do ubiattach /dev/ubi_ctrl -m 4
+# From dmesg:
+# UBI: smallest flash I/O unit:    2048
+# UBI: logical eraseblock size:    129024 bytes
+# from ubiattach stdout:
+# UBI device number 0, total 1996 LEBs
+MKUBIFS_ARGS = "-m 2048 -e 129024 -c 1996"
+
+# do ubiattach /dev/ubi_ctrl -m 4
+# from dmesg:
+# UBI: smallest flash I/O unit:    2048
+# UBI: physical eraseblock size:   131072 bytes (128 KiB)
+# UBI: sub-page size:              512
+UBINIZE_ARGS = "-m 2048 -p 128KiB -s 512"
+
+require conf/machine/include/nios2.inc