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Diffstat (limited to 'packages/linux/nslu2-kernel.inc')
| -rw-r--r-- | packages/linux/nslu2-kernel.inc | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/packages/linux/nslu2-kernel.inc b/packages/linux/nslu2-kernel.inc index e69de29bb2..efd04513a7 100644 --- a/packages/linux/nslu2-kernel.inc +++ b/packages/linux/nslu2-kernel.inc @@ -0,0 +1,248 @@ +# nslu2-kernel.inc +# +# Standard definitions for any NSLU2 Linux kernel. +# Include this file in a .bb which specifies, at least, +# PN,PV,PR for the desired kernel +# +# Define the following *before* including this file as +# required: +# +# N2K_EXTRA_FILES - kernel-tree path of extra files to install +# N2K_FILES - kernel-tree path of files to install, defaults to: +# drivers/i2c/chips/x1205-rtc.c +# arch/arm/mach-ixp4xx/nslu2-io.c +# arch/arm/mach-ixp4xx/nslu2-setup.c +# arch/arm/mach-ixp4xx/nslu2-pci.c +# arch/arm/mach-ixp4xx/nslu2-part.c +# include/asm-arm/arch-ixp4xx/nslu2.h +# ${N2K_EXTRA_FILES} +# +# N2K_EXTRA_PATCHES - list of patches to apply (can include +# patches to the files installed above) +# N2K_PATCHES - full list of patches to apply, defaults to: +# file://nslu2_2.6.11.patch;patch=1 +# file://usbnet.patch;patch=1 +# file://ixp4xx_copy_from.patch;patch=1 +# file://anonymiser.patch;patch=1 +# ${N2K_EXTRA_PATCHES} +# +# N2K_SUFFIX - the suffix to add after 'zImage-' in the +# deploy/images directory - defaults to "openslug" +# +# Notice that the N2K_PATCHES list is appropriate for +# openslug-kernel_2.6.11.2 and probably nothing else. +# +# DEFAULT_PREFERENCE is set automagically in this file as +# follows: +# +# 10 For *released* kernels +# 8 For mm or ac patched versions of released kernels +# 6 For rc patched kernels (release candidates) +# 4 For mm or ac patched rc (release candidate) kernels +# 2 For pre or bk versions +# 0 For mm or ac patched pre or bk versions +# +# -------------------------------------------------------------- +# +# Within this file bitbake variables local to the file are +# named N2K_FOO +# +SECTION = "kernel" +DESCRIPTION = "Linux kernel for the Linksys NSLU2 device" +LICENSE = "GPL" +MAINTAINER = "John Bowler <jbowler@acm.org>" + +# Linux kernel source has the general form linux-X.Y.Z-patchP, +# X.Y is the major version number, Z (which may have multiple +# parts) is a sub-version and 'patch' is something like 'mm' or +# 'ac' with a patch version. The original bz2 archive will be +# in a directory/file vX.Y/linux-X.Y.Z.tar.bz2. The unpacked +# source will be in the directory linux-X.Y.Z and this directory +# name corresponds to the module directory (in /lib/modules). +# +# The corresponding .bb file should be called: +# +# package_X.Y.Z-patchP +# +# Giving PN=package PV=X.Y.Z-patchP (and PR is set in the .bb +# file). Files, including the all important defconfig, are +# searched for in the following directories (last one first): +# +# openslug-kernel-2.6.11.2 +# nslu2-kernel/files +# nslu2-kernel/X.Y +# nslu2-kernel/X.Y.Z +# nslu2-kernel/X.Y.Z-patch +# nslu2-kernel/X.Y.Z-patchP +# package-X.Y.Z-patchP +# +# This allows sharing of patch files and other useful source! +# To share a file or patch with an earlier version put it in +# the shared directory - e.g. to use foo.patch on 2.6.11.2 and +# 2.6.11.4 it should be in directory nslu2-kernel/2.6.11. +# +# Note that when there are multiple patches the X.Y.Z-patch form +# uses base-patch (e.g. 2.6.12-mm) whereas X.Y.Z-patchP has the +# full form, for example 2.6.12-rc3-mm1 (in the same case). + +#PN=package-name +#PV=package-version (full) + +# The patch has the general form (rcN|preN|acN|mmN|bkN)* with the +# separate patch items being separated by '-' characters. The +# rc patch is first and has the important property that it +# requires the *preceding* kernel base version and that this +# will be the source directory name. +python () { + # The patches list may be empty. This code starts with the base + # kernel version and steps through the patches. Because the rc and + # pre patches actually require the *preceding* kernel version the code + # fixes that up appropriately. + pv = bb.data.getVar("PV",d,1).split('-') + kernel = pv[0].split('.') + base = pv[0] + name = [base] + major = '.'.join(name[0].split('.')[0:2]) + patch_uri = [ None ] + filedir = "${FILE_DIRNAME}/nslu2-kernel/%s" + filepath = [ filedir % major ] + pref = 10 + mmac = 0 + for patch in pv[1:]: + name.append(patch) + pname = '-'.join(name) + if patch[0:2] == "rc" or patch[0:3] == "pre": + patch_uri.append("ftp://ftp.kernel.org/pub/linux/kernel/v%s/testing/patch-%s.bz2;patch=1;pname=%s" % (major, pname, pname)) + kernel[-1] = kernel[-1] - 1 + if patch[0:2] == "rc" and pref == 10: + pref = 6 + filepath[0:0] = [ filedir % (name[0] + "-rc") ] + else: + pref = 2 + elif patch[0:2] == "bk": + patch_uri.append("ftp://ftp.kernel.org/pub/linux/kernel/v%s/snapshots/patch-%s.bz2;patch=1;pname=%s" % (major, pname, pname)) + pref = 2 + elif patch[0:2] == "ac": + patch_uri.append("ftp://ftp.kernel.org/pub/linux/kernel/people/alan/linux-%s/%s/patch-%s" % (major, base, pname)) + mmac = 2 + filepath[0:0] = [ filedir % (name[0] + "-ac") ] + elif patch[0:2] == "mm": + patch_uri.append("ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/%s/%s/%s/%s.bz2;patch=1;pname=%s" % (major, base, pname, pname, pname)) + mmac = 2 + filepath[0:0] = [ filedir % (name[0] + "-mm") ] + else: + raise bb.build.FuncFailed("nslu2-kernel: patch %s not recognized in %s" % (patch, '-'.join(pv))) + filepath[0:0] = [ filedir % pname ] + base = pname + + base = '.'.join(kernel) + patch_uri[0] = "ftp://ftp.kernel.org/pub/linux/kernel/v%s/linux-%s.tar.bz2" % (major, base) + filepath[-1:-1] = [ filedir % base ] + filepath[-1:-1] = [ filedir % "files" ] + + bb.data.setVar("N2K_SRCMAJ", major, d) + # bb.note("N2K_SRCMAJ := %s" % major) + bb.data.setVar("N2K_SRCVER", base, d) + # bb.note("N2K_SRCVER := %s" % base) + bb.data.setVar("N2K_SRCURI", ' '.join(patch_uri), d) + # bb.note("N2K_SRCURI := %s" % ' '.join(patch_uri)) + bb.data.setVar("N2K_FILESPATH", ':'.join(filepath), d) + # bb.note("N2K_FILESPATH := %s" % ' '.join(filepath)) + bb.data.setVar("DEFAULT_PREFERENCE", pref-mmac) + # bb.note("DEFAULT_PREFERENCE := %s" % pref-mmac) +} + +# FILESPATH: this list is in order last-searched-first, therefore +# the first entry is the *latest* and/or most specific +FILESPATH = "${FILE_DIRNAME}/${P}:${N2K_FILESPATH}:${FILE_DIRNAME}/openslug-kernel-2.6.11.2" + +# The working directory will be the 'base' version (which may not be the +# same as implied by the PV variable because it corresponds to the prior +# minor version for rc and pre patched versions). +S = "${WORKDIR}/linux-${N2K_SRCVER}" + +# N2K_FILES is a list of additional files added to the source, these are +# put in place before the patches, so may themselves be patched. The list +# gives the path name relative to the base of the kernel source tree, the +# base file name is used to *find* the file. +N2K_EXTRA_FILES ?= +N2K_FILES ?= "\ + drivers/i2c/chips/x1205-rtc.c \ + arch/arm/mach-ixp4xx/nslu2-io.c \ + arch/arm/mach-ixp4xx/nslu2-setup.c \ + arch/arm/mach-ixp4xx/nslu2-pci.c \ + arch/arm/mach-ixp4xx/nslu2-part.c \ + include/asm-arm/arch-ixp4xx/nslu2.h \ + ${N2K_EXTRA_FILES}" + +N2K_SRCFILES = "${@( ' '.join([ ("file://" + n2k_file.split('/')[-1]) for n2k_file in bb.data.getVar("N2K_FILES",d,1).split(None) ]) )}" + +# N2K_PATCHES is a list of additional patches, the list specified +# here comes from the openslug-2.6.11.2 kernel, typically extra +# patches will be required and very often patches will need to +# be removed (i.e. the default is typically not very useful!) +N2K_EXTRA_PATCHES ?= +N2K_PATCHES ?= "\ + file://nslu2_2.6.11.patch;patch=1 \ + file://usbnet.patch;patch=1 \ + file://ixp4xx_copy_from.patch;patch=1 \ + file://anonymiser.patch;patch=1 \ + ${N2K_EXTRA_PATCHES}" + +N2K_SUFFIX ?= "openslug" + +SRC_URI = ${N2K_SRCURI} +SRC_URI += ${N2K_SRCFILES} +SRC_URI += ${N2K_PATCHES} +SRC_URI += "file://defconfig" + +COMPATIBLE_HOST = 'arm.*-linux' + +inherit kernel + +ARCH = "arm" +KERNEL_IMAGETYPE = "zImage" +CMDLINE_CONSOLE ?= "ttyS0,115200n8" +CMDLINE_ROOT ?= "root=/dev/mtdblock4 rw rootfstype=jffs2 mem=32M@0x00000000 init=/linuxrc" +#CMDLINE_ROOT ?= "root=/dev/ram0 rw rootfstype=ext2,jffs2 initrd=0x01000000,10M init=/linuxrc mem=32M@0x00000000" +CMDLINE = "${CMDLINE_ROOT} ${CMDLINE_CONSOLE}" + +# Add the architecture compiler flags to KERNEL_CC and KERNEL_LD as +# required. Notice that this has to be done for each separately built +# module as well! +KERNEL_CC += "${TARGET_CC_ARCH} -mno-thumb-interwork" +# KERNEL_LD += + +# By putting the added files in place in a separate task before +# do_patch it becomes possible to patch these files. +do_unpacklocal() { + for f in ${N2K_FILES} + do + s="$(basename "$f")" + install -m 0644 "${WORKDIR}/$s" "${S}/$f" + done +} + +addtask unpacklocal before do_patch after do_unpack + +do_configure_prepend() { + install -m 0644 ${WORKDIR}/defconfig ${S}/.config + echo "CONFIG_CMDLINE=\"${CMDLINE}\"" >> ${S}/.config + rm -rf ${S}/include/asm-arm/arch ${S}/include/asm-arm/proc \ + ${S}/include/asm-arm/.proc ${S}/include/asm-arm/.arch +} + +do_deploy[dirs] = "${S}" +do_deploy() { + install -d ${DEPLOY_DIR}/images + install -m 0644 arch/${ARCH}/boot/${KERNEL_IMAGETYPE} ${DEPLOY_DIR}/images/${KERNEL_IMAGETYPE}-${N2K_SUFFIX} +} + +addtask deploy before do_build after do_compile + +python () { + # Don't build the kernel unless we're targeting an nslu2 + mach = bb.data.getVar("MACHINE", d, 1) + if mach != 'nslu2': + raise bb.parse.SkipPackage("OpenSlug only builds for the Linksys NSLU2") +} |