slugos: extract common parts of machine conf in slugos.conf

 - conf/machine/include/ixp4xx.conf now provides generic
   configuration for nslu2 and nas100d (+ future ixp4xx based
   machines), the kernel image fixup is made generic, all
   kernel packages have a generic name.  ipkg search rules
   changed to look for the generic packages too.

1 files changed, 153 insertions, 0 deletions

diff --git a/conf/machine/include/ixp4xx.conf b/conf/machine/include/ixp4xx.conf
new file mode 100644
index 0000000000..5005f581ff
--- /dev/null
+++ b/conf/machine/include/ixp4xx.conf
@@ -0,0 +1,153 @@
+#@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 - 'ixp4xxb' or 'ixp4xxl' 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}"
+
+# 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']}"
+
+# PACKAGE_ARCH
+#    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 = "${@['b', 'l'][bb.data.getVar('ARCH_BYTE_SEX', d, 1) == 'le']}"
+PACKAGE_ARCH_BASE = "${@['armv5te', 'thumbv5t'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}"
+PACKAGE_ARCH = "${PACKAGE_ARCH_BASE}${BYTE_SEX_CHAR}"
+
+# MACHINE_ARCH
+#    The correct setting for packages which are specific to the machine, this
+#    defaults to ${MACHINE} in bitbake.conf, however it is set to ixp4xx here
+#    because everything built here is no more specific than that.
+MACHINE_ARCH = "ixp4xx${BYTE_SEX_CHAR}"
+
+# IPKG_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).
+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}"
+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_ARCHS} ${MACHINE}"
+#
+#    This is a priority ordered list - most desireable architecture at the end,
+#    so put <ARM_INSTRUCTION_SET>_ARCHITECTURES at the end and, if
+#    THUMB_INTERWORK precede this with the other architectures.
+IPKG_ARCHS = "${@(lambda arch_thumb, arch_arm, is_arm, interwork: \
+		(interwork and (is_arm and arch_thumb or arch_arm) + ' ' or '') \
+		+ (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}"
+
+#-------------------------------------------------------------------------------
+# 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 ?= "0.99.155"
+PREFERRED_VERSION_ipkg-native ?= "0.99.154"