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Diffstat (limited to 'meta/conf/machine/include/ixp4xx.conf')
| -rw-r--r-- | meta/conf/machine/include/ixp4xx.conf | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/meta/conf/machine/include/ixp4xx.conf b/meta/conf/machine/include/ixp4xx.conf new file mode 100644 index 0000000000..93befb92ce --- /dev/null +++ b/meta/conf/machine/include/ixp4xx.conf @@ -0,0 +1,174 @@ +#@TYPE: Machine configuration +#@NAME: ixp4xx +#@DESCRIPTION: genric machine configuration for ixp4xx platforms + +#------------------------------------------------------------------------------- +# INPUTS +#------------------------------------------------------------------------------- +# conf/${DISTRO}.conf is included after this file and should be used to modify +# variables identified as 'INPUTS' to the required values for the DISTRO, this +# will cause the board specific settings (which depend for the most part on the +# exact CPU used) to be set correctly within this file. The results are the +# variables identifies here as 'OUTPUTS' +# +#variable = "default" +# <possible values> +# description + +ARCH_BYTE_SEX = "be" +# "be" "le" +# The memory byte sex and (on correctly implemented hardware - the IXP4XX is +# correct) the byte sex of the buses within the system. 'be' (big-endian) +# means that the first byte is the most significant byte on a bus, 'le' +# (little-endian) means that the first byte is the least significant byte. + +ARM_INSTRUCTION_SET = "arm" +# "arm" "thumb" +# The instruction set the compiler should use when generating application +# code. The kernel is always compiled with arm code at present. arm code +# is the original 32 bit ARM instruction set, thumb code is the 16 bit +# encoded RISC sub-set. Thumb code is smaller (maybe 70% of the ARM size) +# but requires more instructions (140% for 70% smaller code) so may be +# slower. + +THUMB_INTERWORK = "yes" +# "yes" "no" +# Whether to compile with code to allow interworking between the two +# instruction sets. This allows thumb code to be executed on a primarily +# arm system and vice versa. It is strongly recommended that DISTROs not +# turn this off - the actual cost is very small. + +DISTRO_BASE = "" +# "" ":<base>" +# If given this must be the name of a 'distro' to add to the bitbake OVERRIDES +# after ${DISTRO}, this allows different distros to share a common base of +# overrides. The value given must include a leading ':' or chaos will result. + +IXP4XX_SUFFIX = "${MACHINE_ARCH}" +# <string> +# Kernel suffix - 'ixp4xxbe' or 'ixp4xxle' for a truely generic image, controls +# the suffix on the name of the generated zImage, override in the DISTRO +# configuration if patches or defconfig are changed for the DISTRO. + +#------------------------------------------------------------------------------- +# OUTPUTS +#------------------------------------------------------------------------------- + +#OVERRIDES +# The standard ':' separated list of overrides used by bitbake - see the +# basic setting in bitbake.conf. This list is based on that used for the +# standard setting however :<base>, :thumb and :thumb-interwork will be +# inserted at appropriate points if a base distro, default use of thumb or +# arm/thumb interworking are enabled in the inputs. +OVERRIDE_THUMB = "${@['', ':thumb'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}" +OVERRIDE_INTERWORK = "${@['', ':thumb-interwork'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}" +OVERRIDES = "local:${MACHINE}:ixp4xx:${DISTRO}${DISTRO_BASE}:${TARGET_OS}:${TARGET_ARCH}${OVERRIDE_THUMB}${OVERRIDE_INTERWORK}:build-${BUILD_OS}:fail-fast" + +# TARGET_CC_ARCH +# TARGET_CC_KERNEL_ARCH +# TARGET_LD_ARCH +# TARGET_LD_KERNEL_ARCH +# Compiler and linker options for application code and kernel code. These +# options ensure that the compiler has the correct settings for the selected +# instruction set and interworking. +ARM_INTERWORK_M_OPT = "${@['-mno-thumb-interwork', '-mthumb-interwork'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}" +ARM_THUMB_M_OPT = "${@['-mno-thumb', '-mthumb'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}" +# +TARGET_CC_ARCH = "-march=armv5te -mtune=xscale ${ARM_INTERWORK_M_OPT} ${ARM_THUMB_M_OPT}" +TARGET_CC_KERNEL_ARCH = "-march=armv5te -mtune=xscale -mno-thumb-interwork -mno-thumb" +TARGET_LD_ARCH = "" +TARGET_LD_KERNEL_ARCH = "" + +# FULL_OPTIMIZATION +# Optimization settings. Os works fine and is significantly better than O2. +# The other settings are somewhat arbitrary. The optimisations chosen here +# include the ones which 'break' symbolic debugging (because the compiler does +# not include enough information to allow the debugger to know where given +# values are.) The -fno options are an attempt to cancel explicit use of space +# consuming options found in some packages (this isn't a complete list, this is +# just the ones which package writers seem to know about and abuse). +FULL_OPTIMIZATION = "-Os -fomit-frame-pointer -frename-registers \ + -fno-unroll-loops -fno-inline-functions \ + -fweb -funit-at-a-time" + +# TARGET_ARCH +# The correct setting for the system endianness (ARCH_BYTE_SEX). This will +# be arm (le) or armeb (be) - it is difficult to be more precise in the +# setting because of the large number of ways it is used within OpenEmbedded. +TARGET_ARCH = "${@['armeb', 'arm'][bb.data.getVar('ARCH_BYTE_SEX', d, 1) == 'le']}" + +# TARGET_PACKAGE_ARCH [not used] +# The correct setting for the generated packages. This corresponds to the +# -march flag passed to the compiler because that limits the architectures +# on which the generated code will run. +BYTE_SEX_CHAR = "${@['b', 'l'][bb.data.getVar('ARCH_BYTE_SEX', d, 1) == 'le']}" +TARGET_PACKAGE_ARCH_BASE = "${@['armv5te', 'thumbv5t'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}" +TARGET_PACKAGE_ARCH = "${TARGET_PACKAGE_ARCH_BASE}${BYTE_SEX_CHAR}" + +# MACHINE_ARCH +# The correct setting for packages which are specific to the machine, this +# defaults to ${MACHINE} in bitbake.conf, however it is set to ixp4xx here +# because everything built here is no more specific than that. +MACHINE_ARCH = "ixp4xx${ARCH_BYTE_SEX}" + +# IPKG_EXTRA_ARCHS +# The full list of package architectures which should run on the system. +# This takes into account both the board level issues and the INPUTS set +# by the distro. The arm list is derived from the architecture settings +# known to gcc, the thumb list is then derived from that (only the 't' +# architectures of course). +#[not used]: TARGET_ARCH is handled below because it is also currently +# used for thumb packages. +#ARM_ARCHITECTURES = "${TARGET_ARCH} armv2${BYTE_SEX_CHAR} armv2a${BYTE_SEX_CHAR} armv3${BYTE_SEX_CHAR} armv3m${BYTE_SEX_CHAR} armv4${BYTE_SEX_CHAR} armv4t${BYTE_SEX_CHAR} armv5${BYTE_SEX_CHAR} armv5t${BYTE_SEX_CHAR} armv5e${BYTE_SEX_CHAR} armv5te${BYTE_SEX_CHAR} xscale${BYTE_SEX_CHAR}" +ARM_ARCHITECTURES = "armv2${BYTE_SEX_CHAR} armv2a${BYTE_SEX_CHAR} armv3${BYTE_SEX_CHAR} armv3m${BYTE_SEX_CHAR} armv4${BYTE_SEX_CHAR} armv4t${BYTE_SEX_CHAR} armv5${BYTE_SEX_CHAR} armv5t${BYTE_SEX_CHAR} armv5e${BYTE_SEX_CHAR} armv5te${BYTE_SEX_CHAR} xscale${BYTE_SEX_CHAR}" +THUMB_ARCHITECTURES = "thumbe${BYTE_SEX_CHAR} thumbv4t${BYTE_SEX_CHAR} thumbv5t${BYTE_SEX_CHAR}" + +# NOTE: this list contains just the things which rootfs_ipk.bbclass does +# not add, rootfs_ipk.bbclass evaluates: +# +# ipkgarchs="all any noarch ${TARGET_ARCH} ${IPKG_EXTRA_ARCHS} ${MACHINE}" +# +# This is a priority ordered list - most desireable architecture at the end, +# so put <ARM_INSTRUCTION_SET>_ARCHITECTURES at the end and, if +# THUMB_INTERWORK precede this with the other architectures. +IPKG_EXTRA_ARCHS = "ixp4xx ${MACHINE} \ + ${@(lambda arch_thumb, arch_arm, is_arm, interwork: \ + (interwork and (is_arm and arch_thumb or arch_arm) + ' ' or '') \ + + '${TARGET_ARCH} ' + (is_arm and arch_arm or arch_thumb)) \ + (bb.data.getVar('THUMB_ARCHITECTURES', d, 1), \ + bb.data.getVar('ARM_ARCHITECTURES', d, 1), \ + bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) != 'thumb', \ + bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes')} \ + ${MACHINE_ARCH} ${MACHINE}${ARCH_BYTE_SEX}" + +# IPKG_ARCH_LIST [not used] +# This is used to override the ipkgarchs settings in rootfs_ipk.bbclass, allowing +# the removal of the raw "${MACHINE}" from the end of the list. ${MACHINE} and +# ixp4xx are included at the start (lower priority) as the non-byte-sex specific +# versions. +IPKG_ARCH_LIST = "all any noarch ixp4xx ${MACHINE} ${IPKG_EXTRA_ARCHS}" + +#------------------------------------------------------------------------------- +# Package versions +#------------------------------------------------------------------------------- +# Warning: these are shared across the different machine and distro +# configurations but can be overridden therein if required. +SRCDATE_ipkg-utils ?= "20060106" +SRCDATE_ipkg-utils-native ?= "20060106" +SRCDATE_ipkg-link ?= "20060106" +SRCDATE_irssi ?= "20050930" + +CVS_TARBALL_STASH = "http://sources.nslu2-linux.org/sources/" +INHERIT += "nslu2-mirrors" + +PREFERRED_VERSION_ipkg ?= "0.99.154" +PREFERRED_VERSION_ipkg-native ?= "0.99.154" + +#------------------------------------------------------------------------------- +# 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" |