[PATCH v12 9/9] doc: uefi: add HTTP Boot support

[Masahisa Kojima]

Hi Ilias,

On Fri, 10 Nov 2023 at 15:58, Ilias Apalodimas
<ilias.apalodimas at linaro.org> wrote:
>
> On Fri, 10 Nov 2023 at 06:27, Masahisa Kojima
> <masahisa.kojima at linaro.org> wrote:
> >
> > This adds the description about HTTP Boot.
> >
> > Signed-off-by: Masahisa Kojima <masahisa.kojima at linaro.org>
> > Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
> > ---
> >  doc/develop/uefi/uefi.rst | 30 ++++++++++++++++++++++++++++++
> >  1 file changed, 30 insertions(+)
> >
> > diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst
> > index fb16ac743a..ca9a573669 100644
> > --- a/doc/develop/uefi/uefi.rst
> > +++ b/doc/develop/uefi/uefi.rst
> > @@ -642,6 +642,36 @@ UEFI variables. Booting according to these variables is possible via::
> >  As of U-Boot v2020.10 UEFI variables cannot be set at runtime. The U-Boot
> >  command 'efidebug' can be used to set the variables.
> >
> > +UEFI HTTP Boot
> > +~~~~~~~~~~~~~~
> > +
> > +HTTP Boot provides the capability for system deployment and configuration
> > +over the network. HTTP Boot can be activated by specifying::
> > +
>
> Since we changed depends on to select this needs to change to
> CONFIG_EFI_HTTP_BOOT which in turn will enable ...
> Again, I can fix that on merge

Yes, you are correct.
Thank you for fixing this.

Regards,
Masahisa Kojima

>
> Thanks
> /Ilias
> > +    CONFIG_CMD_DNS
> > +    CONFIG_CMD_WGET
> > +    CONFIG_BLKMAP
> > +
> > +Set up the load option specifying the target URI::
> > +
> > +    efidebug boot add -u 1 netinst http://foo/bar
> > +
> > +When this load option is selected as boot selection, resolve the
> > +host ip address by dns, then download the file with wget.
> > +If the downloaded file extension is .iso or .img file, efibootmgr tries to
> > +mount the image and boot with the default file(e.g. EFI/BOOT/BOOTAA64.EFI).
> > +If the downloaded file is PE-COFF image, load the downloaded file and
> > +start it.
> > +
> > +The current implementation tries to resolve the IP address as a host name.
> > +If the uri is like "http://192.168.1.1/foobar",
> > +the dns process tries to resolve the host "192.168.1.1" and it will
> > +end up with "host not found".
> > +
> > +We need to preset the "httpserverip" environment variable to proceed the wget::
> > +
> > +    setenv httpserverip 192.168.1.1
> > +
> >  Executing the built in hello world application
> >  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > --
> > 2.34.1
> >