[edk2-devel] [edk2-rfc] [RFCv2] code-first process for UEFI-forum specifications

Wed May 20 10:19:04 UTC 2020

Are there any additional comments on the code first process for UEFI specifications?

When should we expect the process to *actually* start being used?

Thanks,
--Samer

> -----Original Message-----
> From: rfc at edk2.groups.io <rfc at edk2.groups.io> On Behalf Of Samer El-Haj-
> Mahmoud via groups.io
> Sent: Thursday, May 14, 2020 5:11 PM
> To: rfc at edk2.groups.io; ray.ni at intel.com; leif at nuviainc.com;
> devel at edk2.groups.io
> Cc: Felixp at ami.com; Doran, Mark <mark.doran at intel.com>; Andrew Fish
> <afish at apple.com>; Laszlo Ersek <lersek at redhat.com>; Kinney, Michael D
> <michael.d.kinney at intel.com>; Samer El-Haj-Mahmoud <Samer.El-Haj-
> Mahmoud at arm.com>
> Subject: Re: [edk2-rfc] [RFCv2] code-first process for UEFI-forum
> specifications
>
> Leif, Ray,
>
> I have not seen any discussion on this thread since March(!)...
>
> Please see my comments below.
>
>
> > -----Original Message-----
> > From: rfc at edk2.groups.io <rfc at edk2.groups.io> On Behalf Of Ni, Ray via
> > Groups.Io
> > Sent: Wednesday, March 25, 2020 1:15 AM
> > To: rfc at edk2.groups.io; leif at nuviainc.com; devel at edk2.groups.io
> > Cc: Felixp at ami.com; Doran, Mark <mark.doran at intel.com>; Andrew Fish
> > <afish at apple.com>; Laszlo Ersek <lersek at redhat.com>; Kinney, Michael D
> > <michael.d.kinney at intel.com>
> > Subject: Re: [edk2-rfc] [RFCv2] code-first process for UEFI-forum
> > specifications
> >
> > >
> > > ## Github
> > > New repositories will be added for holding the text changes and the
> > > source
> > code.
> > >
> > > Specification text changes will be held within the affected source
> > > repository, in the Github flavour of markdown, in a file (or split
> > > across several files) with .md suffix.
> >
> > What's the case when multiple .MD files are needed?
> >
> > > (This one may break down where we have a specification change
> > > affecting multiple specifications, but at that point we can track it
> > > with multiple BZ entries)
> >
> > >
> > >
> > > ## Source code
> > > In order to ensure draft code does not accidentally leak into
> > > production use, and to signify when the changeover from draft to
> > > final happens, *all* new or modified[1] identifiers need to be
> > > prefixed with the
> > relevant BZ####.
> > >
> > > [1] Modified in a non-backwards-compatible way. If, for example, a
> > statically
> > >     sized array is grown - this does not need to be prefixed. But a
> > > tag in a comment would be *highly* recommended.
> >
> > If a protocol is enhanced to provide more interfaces with increased
> > revision number, would you like the protocol name to be prefixed with
> BZ####?
> > Or just the new interfaces added to the protocol are prefixed the BZ####?
> > I think just prefixing the new interfaces can meet the purpose.
> >
>
> I think pre-fixing the new interfaces is sufficient. Otherwise, you need to
> modify all code using the existing interfaces (for build verification)
>
>
> > But the protocol definition is changed, it also needs to be prefixed
> > according to this flow.
> > Can you clarify a bit more?
> >
>
> A changed protocol definition is not backwards compatible, and typically
> results in a new protocol GUID. In that case, it really becomes a new
> definition and need to be pre-fixed per this rule. Right?
>
> > >
> > > ### File names
> > > New public header files need the prefix. I.e.
> > > `Bz1234MyNewProtocol.h` Private header files do not need the prefix.
> > >
> > > ### Contents
> > >
> > > The tagging must follow the coding style used by each affected codebase.
> > > Examples:
> > >
> > > | Released in spec      | Draft version in tree       | Comment                |
> > > | ---                   | ---                         | ---                    |
> > > | `FunctionName`        | `Bz1234FunctionName`        |                        |
> > > | `HEADER_MACRO`        | `BZ1234_HEADER_MACRO`       |                        |
> >
> > If FunctionName or HEADER_MACRO is defined in non-public header files,
> > I don't think they require the prefix. Do you agree?
> >
> > > For data structures or enums, any new or non-backwards-compatible
> > > structs or fields require a prefix. As above, growing an existing
> > > array in an existing struct requires no prefix.
> > >
> > > | `typedef SOME_STRUCT` | `BZ1234_SOME_STRUCT`        | Typedef only
> > [2]       |
> > > | `StructField`         | `Bz1234StructField`         | In existing struct[3]  |
> > > | `typedef SOME_ENUM`   | `BZ1234_SOME_ENUM`          | Typedef only
> > [2]       |
> > >
> > > [2] If the struct or enum definition is separate from the typedef in
> > > the
> > public
> > >     header, the definition does not need the prefix.
> >
> > What does "separate" mean?
> > Does it mean "struct or enum in the public header BzXXX.h don't need
> > the prefix"?
> > If yes, then I think macros defined in BzXXX.h also don't need the prefix.
> >
> > > [3] Individual fields in newly added typedefd struct do not need prefix,
> the
> > >     struct already carried the prefix.
> > >
> > > Variable prefixes indicating global scope ('g' or 'm') go before the BZ
> prefix.
> > >
> > > | `gSomeGuid`           | `gBz1234SomeGuid`           |                        |
> > >
> > > Local identifiers, including module-global ones (m-prefixed) do not
> > > require a BZ prefix.
> >
> > I think only the names (struct type name, enum type name, interface
> > name, protocol/ppi name) defined in public header files need the BZ
> > prefix when the public header doesn't have prefix.
> > Right?
> >
>
> The way I read it, *all* new (and non-backward modified) identifiers
> (typedef struct, typedef enum, and new structfield in existing struct) need to
> be pre-fixed, regardless if the filename is prefixed or not.
> Correct?
>
> >
> >
>
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