Hi Simon, Thank you for the patch.
On lun., juil. 15, 2024 at 11:13, Simon Glass <s...@chromium.org> wrote: > Add documentation for the pxe bootmeth. > > Signed-off-by: Simon Glass <s...@chromium.org> Reviewed-by: Mattijs Korpershoek <mkorpersh...@baylibre.com> Nitpick: now that pxelinux.rst exist, can we link to this file in extlinux.rst ? > --- > > doc/develop/bootstd/index.rst | 1 + > doc/develop/bootstd/overview.rst | 2 +- > doc/develop/bootstd/pxelinux.rst | 27 +++++++++++++++++++++++++++ > 3 files changed, 29 insertions(+), 1 deletion(-) > create mode 100644 doc/develop/bootstd/pxelinux.rst > > diff --git a/doc/develop/bootstd/index.rst b/doc/develop/bootstd/index.rst > index 5bbb3d633a3..5052afe448f 100644 > --- a/doc/develop/bootstd/index.rst > +++ b/doc/develop/bootstd/index.rst > @@ -8,3 +8,4 @@ Standard Boot > > overview > extlinux > + pxelinux > diff --git a/doc/develop/bootstd/overview.rst > b/doc/develop/bootstd/overview.rst > index 086a0b1281d..fd0692daf0d 100644 > --- a/doc/develop/bootstd/overview.rst > +++ b/doc/develop/bootstd/overview.rst > @@ -413,7 +413,7 @@ Available bootmeth drivers > Bootmeth drivers are provided for: > > - :doc:`extlinux / syslinux <extlinux>` boot from a disk > - - extlinux boot from a network (PXE) > + - :doc:`extlinux / syslinux <extlinux>` boot from a network (PXE) > - U-Boot scripts from disk, network or SPI flash > - EFI boot using bootefi from disk > - VBE > diff --git a/doc/develop/bootstd/pxelinux.rst > b/doc/develop/bootstd/pxelinux.rst > new file mode 100644 > index 00000000000..08ba67e09c5 > --- /dev/null > +++ b/doc/develop/bootstd/pxelinux.rst > @@ -0,0 +1,27 @@ > +.. SPDX-License-Identifier: GPL-2.0+: > + > +PXE Bootmeth > +============ > + > +PXE (Preboot eXecution-Environment) provides a way to boot an Operating > System > +over a network interface. The PXE bootmeth supports PXELINUX and allows > U-Boot to > +provide a menu of possible Operating Systems from which the user can choose. > + > +U-Boot includes a parser for the `extlinux.conf` file described > +`here > <https://uapi-group.org/specifications/specs/boot_loader_specification>`_. > +It consists primarily of a list of named OSes along with the kernel, initial > +ramdisk and other settings. The file is retrieved from a network server using > +tftpboot. > + > +When invoked on a bootdev, this bootmeth searches for the file and creates a > +bootflow if found. See > +`PXELINUX <https://wiki.syslinux.org/wiki/index.php?title=PXELINUX>`_ for > +a full description of the search procedure. > + > +When the bootflow is booted, the bootmeth calls pxe_setup_ctx() to set up the > +context, then pxe_process() to process the file. Depending on the contents, > this > +may boot an OS or provide a list of options to the user, perhaps with a > timeout. > + > +The compatible string "u-boot,extlinux-pxe" is used for the driver. The > driver > +is automatically instantiated if there are no bootmeth drivers in the > +devicetree. > -- > 2.34.1
