On Fri, 15 Sept 2023 at 02:52, Masahisa Kojima <[email protected]> wrote: > > On Thu, 14 Sept 2023 at 22:57, Ilias Apalodimas > <[email protected]> wrote: > > > > On Fri, Sep 01, 2023 at 07:25:42PM +0900, Masahisa Kojima wrote: > > > This adds the description about HTTP Boot. > > > > > > Signed-off-by: Masahisa Kojima <[email protected]> > > > --- > > > doc/develop/uefi/uefi.rst | 21 +++++++++++++++++++++ > > > 1 file changed, 21 insertions(+) > > > > > > diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst > > > index a7a41f2fac..fd87bb1edb 100644 > > > --- a/doc/develop/uefi/uefi.rst > > > +++ b/doc/develop/uefi/uefi.rst > > > @@ -594,6 +594,27 @@ 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:: > > > + > > > + 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 dhs, then download the file with wget. > > > > dhs -> dns > OK. > > > what happens if it's an IP address? > Current implementation tries to resolve the IP address as a host name, > so the DNS process will end up with "host not found". > We need to preset the "httpserverip" env variable to proceed the wget. > > For this series, without a lwip port, this limitation should be noted here. > > I could take the ip address format check code from iwip or other projects, > but I did not do that since there is a workaround(set "httpserverip" > env variable). > In addition, when the lwip port lands, this case is properly handled. > If the IP address is used as host, the DNS process is skipped.
Ok, then update this with information on how to use an IP address instead of a hostname and once LWIP lands we can update it Thanks /Ilias > > Thanks, > Masahisa Kojima > > > > > > +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 extension is .efi and file is PE-COFF image, > > > +load the downloaded file and start it. > > > + > > > Executing the built in hello world application > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > > > -- > > > 2.34.1 > > > > > > > Thanks > > /Ilias
