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# Configuration file included in Makefile
#
# Copyright (C) 2011 Columbia University. All rights reserved.
# Christoffer Dall <cdall@cs.columbia.edu>
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE.txt file.
#
# This is a sample configuration file. To make changes, copy this file to
# config.mk and modify that file.
#
# For all systems you can override USE_INITRD and KCMD from the command-line.
#
###########################################################################
# Main options
#
CROSS_COMPILE ?= arm-unknown-eabi-
ARCH ?= arm
KERNEL_SRC ?= ../linux-kvm-arm
# Select system:
# mps: MPS (Cortex-M3)
# realview_eb: RealViewPB, EB, etc.
# vexpress: Versatile Express
SYSTEM ?= vexpress
###########################################################################
# Turn this on to use an initrd whose contents are in filesystem.cpio.gz
USE_INITRD ?= no
ifeq ($(USE_INITRD),yes)
CPPFLAGS += -DUSE_INITRD
FILESYSTEM ?= filesystem.cpio.gz
else
FILESYSTEM =
endif
###########################################################################
# Default NFS root
NFS_ROOT ?= /srv/nfsroot
ifeq ($(origin NFS_SERVER), undefined)
NFS_SERVER := $(shell ip addr show scope global | \
sed -ne '/inet/{s/ *inet \([^/]*\)\/.*/\1/p;q}')
endif
###########################################################################
# MPS (Cortex-M3) definitions
#
ifeq ($(SYSTEM),mps)
# C-flags
CPPFLAGS += -DMACH_MPS -DTHUMB2_KERNEL
CPPFLAGS += -march=armv7-m
CPPFLAGS += -mthumb -Wa,-mthumb -Wa,-mimplicit-it=always
# Kernel command line
KCMD ?= "rdinit=/bin/sh console=ttyAMA3 mem=4M earlyprintk"
endif # SYSTEM = mps
###########################################################################
# EB, RealviewPB, etc
#
ifeq ($(SYSTEM),realview_eb)
#CPPFLAGS += -DSMP
CPPFLAGS += -march=armv7-a
#CPPFLAGS += -DTHUMB2_KERNEL
# Default kernel command line, using initrd:
ifeq ($(USE_INITRD),yes)
KCMD ?= "console=ttyAMA0 mem=256M earlyprintk"
endif
#
# Default kernel command line, without initrd:
ifneq ($(USE_INITRD),yes)
KCMD ?= "root=/dev/nfs nfsroot=$(NFS_HOST):$(NFS_ROOT) ip=dhcp console=ttyAMA0 mem=256M earlyprintk"
endif
endif # SYSTEM = realvire_eb
###########################################################################
# Versatile Express
#
ifeq ($(SYSTEM),vexpress)
CPPFLAGS += -DSMP
CPPFLAGS += -march=armv7-a
#CPPFLAGS += -DTHUMB2_KERNEL
CPPFLAGS += -DVEXPRESS
# Default kernel command line, using initrd:
ifeq ($(USE_INITRD),yes)
KCMD ?= "console=ttyAMA0 mem=512M mem=512M@0x880000000 earlyprintk ip=dhcp"
endif
#
# Default kernel command line, without initrd:
ifneq ($(USE_INITRD),yes)
KCMD ?= "console=ttyAMA0 mem=512M mem=512M@0x880000000 earlyprintk root=/dev/nfs nfsroot=$(NFS_SERVER):$(NFS_ROOT),tcp rw ip=dhcp nfsrootdebug"
endif
endif # SYSTEM = vexpress
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