The initrd image used by the Linux kernel is list of file system images concatenated together and presented as a single initrd file at boot time. So far the initrd is a single filesystem image. But in cases like to support early microcode loading, the initrd image need to have multiple filesystem images concatenated together. This commit is extending the INITRD variable from a single filesystem image to a list of filesystem images to satisfy the need mentioned above. (From OE-Core rev: b0ac481dda99d8f4be8015964fcb2cb01afce08c) Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
188 lines
6.1 KiB
Text
188 lines
6.1 KiB
Text
# syslinux.bbclass
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# Copyright (C) 2004-2006, Advanced Micro Devices, Inc. All Rights Reserved
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# Released under the MIT license (see packages/COPYING)
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# Provide syslinux specific functions for building bootable images.
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# External variables
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# ${INITRD} - indicates a list of filesystem images to concatenate and use as an initrd (optional)
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# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
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# ${AUTO_SYSLINUXMENU} - set this to 1 to enable creating an automatic menu
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# ${LABELS} - a list of targets for the automatic config
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# ${APPEND} - an override list of append strings for each label
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# ${SYSLINUX_OPTS} - additional options to add to the syslinux file ';' delimited
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# ${SYSLINUX_SPLASH} - A background for the vga boot menu if using the boot menu
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# ${SYSLINUX_DEFAULT_CONSOLE} - set to "console=ttyX" to change kernel boot default console
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# ${SYSLINUX_SERIAL} - Set an alternate serial port or turn off serial with empty string
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# ${SYSLINUX_SERIAL_TTY} - Set alternate console=tty... kernel boot argument
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# ${SYSLINUX_KERNEL_ARGS} - Add additional kernel arguments
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do_bootimg[depends] += "${MLPREFIX}syslinux:do_populate_sysroot \
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syslinux-native:do_populate_sysroot"
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SYSLINUXCFG = "${S}/syslinux.cfg"
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ISOLINUXDIR = "/isolinux"
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SYSLINUXDIR = "/"
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# The kernel has an internal default console, which you can override with
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# a console=...some_tty...
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SYSLINUX_DEFAULT_CONSOLE ?= ""
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SYSLINUX_SERIAL ?= "0 115200"
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SYSLINUX_SERIAL_TTY ?= "console=ttyS0,115200"
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ISO_BOOTIMG = "isolinux/isolinux.bin"
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ISO_BOOTCAT = "isolinux/boot.cat"
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MKISOFS_OPTIONS = "-no-emul-boot -boot-load-size 4 -boot-info-table"
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APPEND_prepend = " ${SYSLINUX_ROOT} "
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syslinux_populate() {
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DEST=$1
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BOOTDIR=$2
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CFGNAME=$3
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install -d ${DEST}${BOOTDIR}
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# Install the config files
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install -m 0644 ${SYSLINUXCFG} ${DEST}${BOOTDIR}/${CFGNAME}
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if [ "${AUTO_SYSLINUXMENU}" = 1 ] ; then
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install -m 0644 ${STAGING_DATADIR}/syslinux/vesamenu.c32 ${DEST}${BOOTDIR}/vesamenu.c32
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install -m 0444 ${STAGING_DATADIR}/syslinux/libcom32.c32 ${DEST}${BOOTDIR}/libcom32.c32
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install -m 0444 ${STAGING_DATADIR}/syslinux/libutil.c32 ${DEST}${BOOTDIR}/libutil.c32
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if [ "${SYSLINUX_SPLASH}" != "" ] ; then
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install -m 0644 ${SYSLINUX_SPLASH} ${DEST}${BOOTDIR}/splash.lss
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fi
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fi
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}
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syslinux_iso_populate() {
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iso_dir=$1
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syslinux_populate $iso_dir ${ISOLINUXDIR} isolinux.cfg
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install -m 0644 ${STAGING_DATADIR}/syslinux/isolinux.bin $iso_dir${ISOLINUXDIR}
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install -m 0644 ${STAGING_DATADIR}/syslinux/ldlinux.c32 $iso_dir${ISOLINUXDIR}
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}
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syslinux_hddimg_populate() {
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hdd_dir=$1
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syslinux_populate $hdd_dir ${SYSLINUXDIR} syslinux.cfg
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install -m 0444 ${STAGING_DATADIR}/syslinux/ldlinux.sys $hdd_dir${SYSLINUXDIR}/ldlinux.sys
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}
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syslinux_hddimg_install() {
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syslinux ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
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}
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syslinux_hdddirect_install() {
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DEST=$1
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syslinux $DEST
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}
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python build_syslinux_cfg () {
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import copy
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import sys
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workdir = d.getVar('WORKDIR', True)
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if not workdir:
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bb.error("WORKDIR not defined, unable to package")
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return
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labels = d.getVar('LABELS', True)
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if not labels:
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bb.debug(1, "LABELS not defined, nothing to do")
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return
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if labels == []:
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bb.debug(1, "No labels, nothing to do")
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return
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cfile = d.getVar('SYSLINUXCFG', True)
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if not cfile:
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raise bb.build.FuncFailed('Unable to read SYSLINUXCFG')
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try:
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cfgfile = file(cfile, 'w')
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except OSError:
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raise bb.build.funcFailed('Unable to open %s' % (cfile))
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cfgfile.write('# Automatically created by OE\n')
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opts = d.getVar('SYSLINUX_OPTS', True)
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if opts:
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for opt in opts.split(';'):
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cfgfile.write('%s\n' % opt)
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cfgfile.write('ALLOWOPTIONS 1\n');
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syslinux_default_console = d.getVar('SYSLINUX_DEFAULT_CONSOLE', True)
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syslinux_serial_tty = d.getVar('SYSLINUX_SERIAL_TTY', True)
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syslinux_serial = d.getVar('SYSLINUX_SERIAL', True)
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if syslinux_serial:
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cfgfile.write('SERIAL %s\n' % syslinux_serial)
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menu = d.getVar('AUTO_SYSLINUXMENU', True)
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if menu and syslinux_serial:
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cfgfile.write('DEFAULT Graphics console %s\n' % (labels.split()[0]))
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else:
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cfgfile.write('DEFAULT %s\n' % (labels.split()[0]))
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timeout = d.getVar('SYSLINUX_TIMEOUT', True)
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if timeout:
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cfgfile.write('TIMEOUT %s\n' % timeout)
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else:
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cfgfile.write('TIMEOUT 50\n')
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prompt = d.getVar('SYSLINUX_PROMPT', True)
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if prompt:
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cfgfile.write('PROMPT %s\n' % prompt)
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else:
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cfgfile.write('PROMPT 1\n')
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if menu:
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cfgfile.write('ui vesamenu.c32\n')
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cfgfile.write('menu title Select kernel options and boot kernel\n')
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cfgfile.write('menu tabmsg Press [Tab] to edit, [Return] to select\n')
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splash = d.getVar('SYSLINUX_SPLASH', True)
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if splash:
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cfgfile.write('menu background splash.lss\n')
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for label in labels.split():
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localdata = bb.data.createCopy(d)
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overrides = localdata.getVar('OVERRIDES', True)
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if not overrides:
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raise bb.build.FuncFailed('OVERRIDES not defined')
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localdata.setVar('OVERRIDES', label + ':' + overrides)
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bb.data.update_data(localdata)
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btypes = [ [ "", syslinux_default_console ] ]
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if menu and syslinux_serial:
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btypes = [ [ "Graphics console ", syslinux_default_console ],
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[ "Serial console ", syslinux_serial_tty ] ]
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for btype in btypes:
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cfgfile.write('LABEL %s%s\nKERNEL /vmlinuz\n' % (btype[0], label))
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exargs = d.getVar('SYSLINUX_KERNEL_ARGS', True)
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if exargs:
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btype[1] += " " + exargs
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append = localdata.getVar('APPEND', True)
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initrd = localdata.getVar('INITRD', True)
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if append:
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cfgfile.write('APPEND ')
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if initrd:
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cfgfile.write('initrd=/initrd ')
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cfgfile.write('LABEL=%s '% (label))
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cfgfile.write('%s %s\n' % (append, btype[1]))
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else:
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cfgfile.write('APPEND %s\n' % btype[1])
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cfgfile.close()
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}
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build_syslinux_cfg[vardeps] += "APPEND"
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