[U-Boot] [PATCH 1/1] efi_loader: define development target in README.uefi

[AKASHI Takahiro]

On Mon, Apr 01, 2019 at 01:28:24AM +0700, Alexander Graf wrote:
> 
> On 28.03.19 14:11, Heinrich Schuchardt wrote:
> > Describe the target scope of the UEFI implementation in U-Boot.
> >
> > Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> > ---
> >  doc/README.uefi | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> >
> > diff --git a/doc/README.uefi b/doc/README.uefi
> > index b38efbc0cc..66b6abece5 100644
> > --- a/doc/README.uefi
> > +++ b/doc/README.uefi
> > @@ -12,6 +12,15 @@ the interaction of drivers and applications with the firmware. The API comprises
> >  access to block storage, network, and console to name a few. The Linux kernel
> >  and boot loaders like GRUB or the FreeBSD loader can be executed.
> >
> > +## Development target
> > +
> > +The implementation of UEFI in U-Boot strives to reach the minimum requirements
> > +described in "Server Base Boot Requirements System Software on ARM Platforms -
> > +Version 1.1" [4].
> > +
> > +A full blown UEFI implementation would contradict the U-Boot design principle
> > +"keep it small".
> 
> 
> I'm not sure we ever want to be fully SBBR compliant. We might be, but
> it's not been a goal so far. We do however want to be *EBBR* compliant.

The current U-Boot still lacks lots of EBBR features.
Our 'minimum' set may be even much smaller than that.

-Takahiro Akashi

> Alex
> 
> 
> > +
> >  ## Building for UEFI
> >
> >  The UEFI standard supports only little-endian systems. The UEFI support can be
> > @@ -335,3 +344,5 @@ This driver is only available if U-Boot is configured with
> >    http://uefi.org/specifications - UEFI specifications
> >  * [2](./driver-model/README.txt) doc/driver-model/README.txt - Driver model
> >  * [3](./README.iscsi) doc/README.iscsi - iSCSI booting with U-Boot and iPXE
> > +* [4](https://developer.arm.com/docs/den0044/latest/server-base-boot-requirements-system-software-on-arm-platforms-version-11)
> > +  Server Base Boot Requirements System Software on ARM Platforms - Version 1.1
> > --
> > 2.20.1
> >