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24fd0c6845
All of our bbclasses are per-recipe, rather than global. Signed-off-by: Matt Madison <matt@madison.systems>
128 lines
5.0 KiB
Plaintext
128 lines
5.0 KiB
Plaintext
# l4t-extlinux-config.bbclass
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#
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# This class allow the extlinux.conf generation for use with
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# the L4TLauncher UEFI boot application, which is derived from
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# the extlinux.conf support in the older cboot bootloader on
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# Tegra platforms.
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#
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# This is adapted from OE-Core's uboot-extlinux-config class,
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# and uses the same variable names (with one addition), but
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# has the following differences:
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#
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# 1. The addition of a MENU TITLE line, which MUST be present.
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# 2. Labels are used for the LABEL lines. Menu descriptions
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# are used for MENU LABEL lines, which MUST be present.
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# 3. A DEFAULT line is always included, even if there is only
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# one entry.
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# 4. FDTDIR is not supported.
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# 5. Relative path names are not permitted.
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# 6. UBOOT_EXTLINUX_CONSOLE is not used, and
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# UBOOT_EXTLINUX_KERNEL_ARGS defaults to null string, due to
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# common boot args being inserted into the device tree.
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# 7. An APPEND line *must* begin with "${cbootargs} " to be appended
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# to the kernel command line. (It is automatically prepended
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# in this bbclass.) ** NB: In L4T R35.2.1, a bug in the L4TLauncher
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# code also requires this line to be present.
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# 8. L4TLauncher uses 'LINUX' instead of 'KERNEL' for the kernel image.
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#
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# External variables:
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# See uboot-extlinux-config.bbclass for the basic set.
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# UBOOT_EXTLINUX_MENU_TITLE - Menu title line
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#
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# Original copyright from uboot-extlinux-config.bblcass
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# Copyright (C) 2016, O.S. Systems Software LTDA. All Rights Reserved
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# Released under the MIT license (see packages/COPYING)
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UBOOT_EXTLINUX_LABELS ??= "primary"
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UBOOT_EXTLINUX_FDT ??= ""
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UBOOT_EXTLINUX_KERNEL_IMAGE ??= "/boot/${KERNEL_IMAGETYPE}"
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UBOOT_EXTLINUX_KERNEL_ARGS ??= ""
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UBOOT_EXTLINUX_MENU_DESCRIPTION_primary ??= "${DISTRO_NAME}"
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UBOOT_EXTLINUX_MENU_TITLE ??= "L4T boot options"
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UBOOT_EXTLINUX_CONFIG = "${B}/extlinux.conf"
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python do_create_extlinux_config() {
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if d.getVar('UBOOT_EXTLINUX') != '1':
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return
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if not d.getVar('WORKDIR'):
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bb.error("WORKDIR not defined, unable to package")
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labels = (d.getVar('UBOOT_EXTLINUX_LABELS') or '').split()
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if len(labels) == 0:
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bb.fatal("UBOOT_EXTLINUX_LABELS not defined or null, nothing to do")
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cfile = d.getVar('UBOOT_EXTLINUX_CONFIG')
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if not cfile:
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bb.fatal('Unable to read UBOOT_EXTLINUX_CONFIG')
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localdata = bb.data.createCopy(d)
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cfg = '# L4TLauncher configuration file generated by OE4T\n'
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cfg += 'MENU TITLE %s\n' % d.getVar('UBOOT_EXTLINUX_MENU_TITLE')
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timeout = localdata.getVar('UBOOT_EXTLINUX_TIMEOUT')
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if timeout:
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cfg += 'TIMEOUT %s\n' % timeout
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default = localdata.getVar('UBOOT_EXTLINUX_DEFAULT_LABEL') or labels[0]
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if default not in labels:
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bb.fatal('UBOOT_EXTLINUX_DEFAULT_LABEL (%s) not in UBOOT_EXTLINUX_LABELS' % default)
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cfg += 'DEFAULT ' + default + '\n'
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# Need to deconflict the labels with existing overrides
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default_overrides = localdata.getVar('OVERRIDES').split(':')
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# We're keeping all the existing overrides that aren't used as a label
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# an override for that label will be added back in while we're processing that label
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keep_overrides = list(filter(lambda x: x not in labels, default_overrides))
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for label in labels:
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localdata.setVar('OVERRIDES', ':'.join(keep_overrides + [label]))
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menu_description = localdata.getVar('UBOOT_EXTLINUX_MENU_DESCRIPTION')
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if not menu_description:
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menu_description = label
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kernel_image = localdata.getVar('UBOOT_EXTLINUX_KERNEL_IMAGE')
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fdt = localdata.getVar('UBOOT_EXTLINUX_FDT')
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if fdt:
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fdt = '\tFDT ' + fdt + '\n'
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cfg += 'LABEL %s\n\tMENU LABEL %s\n\tLINUX %s\n%s' % (label, menu_description, kernel_image, fdt)
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initrd = localdata.getVar('UBOOT_EXTLINUX_INITRD')
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if initrd:
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cfg += '\tINITRD ' + initrd + '\n'
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kernel_args = localdata.getVar('UBOOT_EXTLINUX_KERNEL_ARGS')
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if kernel_args:
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kernel_args = '${cbootargs} ' + kernel_args
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cfg += '\tAPPEND ' + kernel_args + '\n'
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else:
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# This line is required when using unpatched UEFI 35.2.1
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cfg += '\tAPPEND ${cbootargs}\n'
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# When signing, input length is expected to be an even multiple
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# of 16 bytes; otherwise the signing tool will pad it with 0x80,
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# which could cause it to be unparseable by ordinary mortals
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# (and their tools). Pad it with linefeeds here to prevent that.
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cfgextra = len(cfg) % 16
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if cfgextra > 0:
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cfg += '\n' * (16 - cfgextra)
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try:
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with open(cfile, 'w') as cfgfile:
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cfgfile.write(cfg)
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except OSError:
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bb.fatal('Unable to open %s' % (cfile))
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}
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UBOOT_EXTLINUX_VARS = "CONSOLE MENU_DESCRIPTION KERNEL_IMAGE FDT KERNEL_ARGS INITRD"
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do_create_extlinux_config[vardeps] += "${@' '.join(['UBOOT_EXTLINUX_%s_%s' % (v, l) for v in d.getVar('UBOOT_EXTLINUX_VARS').split() for l in d.getVar('UBOOT_EXTLINUX_LABELS').split()])}"
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do_create_extlinux_config[vardepsexclude] += "OVERRIDES"
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addtask create_extlinux_config before do_install do_deploy after do_compile
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