153 lines
5.7 KiB
Plaintext
153 lines
5.7 KiB
Plaintext
# uboot-extlinux-config.bbclass
|
|
#
|
|
# This class allow the extlinux.conf generation for U-Boot use. The
|
|
# U-Boot support for it is given to allow the Generic Distribution
|
|
# Configuration specification use by OpenEmbedded-based products.
|
|
#
|
|
# External variables:
|
|
#
|
|
# UBOOT_EXTLINUX_CONSOLE - Set to "console=ttyX" to change kernel boot
|
|
# default console.
|
|
# UBOOT_EXTLINUX_LABELS - A list of targets for the automatic config.
|
|
# UBOOT_EXTLINUX_KERNEL_ARGS - Add additional kernel arguments.
|
|
# UBOOT_EXTLINUX_KERNEL_IMAGE - Kernel image name.
|
|
# UBOOT_EXTLINUX_FDTDIR - Device tree directory.
|
|
# UBOOT_EXTLINUX_FDT - Device tree file.
|
|
# UBOOT_EXTLINUX_INITRD - Indicates a list of filesystem images to
|
|
# concatenate and use as an initrd (optional).
|
|
# UBOOT_EXTLINUX_MENU_DESCRIPTION - Name to use as description.
|
|
# UBOOT_EXTLINUX_ROOT - Root kernel cmdline.
|
|
# UBOOT_EXTLINUX_TIMEOUT - Timeout before DEFAULT selection is made.
|
|
# Measured in 1/10 of a second.
|
|
# UBOOT_EXTLINUX_DEFAULT_LABEL - Target to be selected by default after
|
|
# the timeout period
|
|
#
|
|
# If there's only one label system will boot automatically and menu won't be
|
|
# created. If you want to use more than one labels, e.g linux and alternate,
|
|
# use overrides to set menu description, console and others variables.
|
|
#
|
|
# Ex:
|
|
#
|
|
# UBOOT_EXTLINUX_LABELS ??= "default fallback"
|
|
#
|
|
# UBOOT_EXTLINUX_DEFAULT_LABEL ??= "Linux Default"
|
|
# UBOOT_EXTLINUX_TIMEOUT ??= "30"
|
|
#
|
|
# UBOOT_EXTLINUX_KERNEL_IMAGE_default ??= "../zImage"
|
|
# UBOOT_EXTLINUX_MENU_DESCRIPTION_default ??= "Linux Default"
|
|
#
|
|
# UBOOT_EXTLINUX_KERNEL_IMAGE_fallback ??= "../zImage-fallback"
|
|
# UBOOT_EXTLINUX_MENU_DESCRIPTION_fallback ??= "Linux Fallback"
|
|
#
|
|
# Results:
|
|
#
|
|
# menu title Select the boot mode
|
|
# TIMEOUT 30
|
|
# DEFAULT Linux Default
|
|
# LABEL Linux Default
|
|
# KERNEL ../zImage
|
|
# FDTDIR ../
|
|
# APPEND root=/dev/mmcblk2p2 rootwait rw console=${console}
|
|
# LABEL Linux Fallback
|
|
# KERNEL ../zImage-fallback
|
|
# FDTDIR ../
|
|
# APPEND root=/dev/mmcblk2p2 rootwait rw console=${console}
|
|
#
|
|
# Copyright (C) 2016, O.S. Systems Software LTDA. All Rights Reserved
|
|
# Released under the MIT license (see packages/COPYING)
|
|
#
|
|
# The kernel has an internal default console, which you can override with
|
|
# a console=...some_tty...
|
|
UBOOT_EXTLINUX_CONSOLE ??= "console=${console}"
|
|
UBOOT_EXTLINUX_LABELS ??= "linux"
|
|
UBOOT_EXTLINUX_FDT ??= ""
|
|
UBOOT_EXTLINUX_FDTDIR ??= "../"
|
|
UBOOT_EXTLINUX_KERNEL_IMAGE ??= "../${KERNEL_IMAGETYPE}"
|
|
UBOOT_EXTLINUX_KERNEL_ARGS ??= "rootwait rw"
|
|
UBOOT_EXTLINUX_MENU_DESCRIPTION_linux ??= "${DISTRO_NAME}"
|
|
|
|
UBOOT_EXTLINUX_CONFIG = "${B}/extlinux.conf"
|
|
|
|
python do_create_extlinux_config() {
|
|
if d.getVar("UBOOT_EXTLINUX") != "1":
|
|
return
|
|
|
|
if not d.getVar('WORKDIR'):
|
|
bb.error("WORKDIR not defined, unable to package")
|
|
|
|
labels = d.getVar('UBOOT_EXTLINUX_LABELS')
|
|
if not labels:
|
|
bb.fatal("UBOOT_EXTLINUX_LABELS not defined, nothing to do")
|
|
|
|
if not labels.strip():
|
|
bb.fatal("No labels, nothing to do")
|
|
|
|
cfile = d.getVar('UBOOT_EXTLINUX_CONFIG')
|
|
if not cfile:
|
|
bb.fatal('Unable to read UBOOT_EXTLINUX_CONFIG')
|
|
|
|
localdata = bb.data.createCopy(d)
|
|
|
|
try:
|
|
with open(cfile, 'w') as cfgfile:
|
|
cfgfile.write('# Generic Distro Configuration file generated by OpenEmbedded\n')
|
|
|
|
if len(labels.split()) > 1:
|
|
cfgfile.write('menu title Select the boot mode\n')
|
|
|
|
timeout = localdata.getVar('UBOOT_EXTLINUX_TIMEOUT')
|
|
if timeout:
|
|
cfgfile.write('TIMEOUT %s\n' % (timeout))
|
|
|
|
if len(labels.split()) > 1:
|
|
default = localdata.getVar('UBOOT_EXTLINUX_DEFAULT_LABEL')
|
|
if default:
|
|
cfgfile.write('DEFAULT %s\n' % (default))
|
|
|
|
for label in labels.split():
|
|
|
|
overrides = localdata.getVar('OVERRIDES')
|
|
if not overrides:
|
|
bb.fatal('OVERRIDES not defined')
|
|
|
|
localdata.setVar('OVERRIDES', label + ':' + overrides)
|
|
|
|
extlinux_console = localdata.getVar('UBOOT_EXTLINUX_CONSOLE')
|
|
|
|
menu_description = localdata.getVar('UBOOT_EXTLINUX_MENU_DESCRIPTION')
|
|
if not menu_description:
|
|
menu_description = label
|
|
|
|
root = localdata.getVar('UBOOT_EXTLINUX_ROOT')
|
|
if not root:
|
|
bb.fatal('UBOOT_EXTLINUX_ROOT not defined')
|
|
|
|
kernel_image = localdata.getVar('UBOOT_EXTLINUX_KERNEL_IMAGE')
|
|
fdtdir = localdata.getVar('UBOOT_EXTLINUX_FDTDIR')
|
|
|
|
fdt = localdata.getVar('UBOOT_EXTLINUX_FDT')
|
|
|
|
if fdt:
|
|
cfgfile.write('LABEL %s\n\tKERNEL %s\n\tFDT %s\n' %
|
|
(menu_description, kernel_image, fdt))
|
|
elif fdtdir:
|
|
cfgfile.write('LABEL %s\n\tKERNEL %s\n\tFDTDIR %s\n' %
|
|
(menu_description, kernel_image, fdtdir))
|
|
else:
|
|
cfgfile.write('LABEL %s\n\tKERNEL %s\n' % (menu_description, kernel_image))
|
|
|
|
kernel_args = localdata.getVar('UBOOT_EXTLINUX_KERNEL_ARGS')
|
|
|
|
initrd = localdata.getVar('UBOOT_EXTLINUX_INITRD')
|
|
if initrd:
|
|
cfgfile.write('\tINITRD %s\n'% initrd)
|
|
|
|
kernel_args = root + " " + kernel_args
|
|
cfgfile.write('\tAPPEND %s %s\n' % (kernel_args, extlinux_console))
|
|
|
|
except OSError:
|
|
bb.fatal('Unable to open %s' % (cfile))
|
|
}
|
|
|
|
addtask create_extlinux_config before do_install do_deploy after do_compile
|