libpayload: Add PAYLOAD_PARAM

[Jordan Crouse]

This patch adds the PAYLOAD_PARAM macro which is used by payloads
to communicate information (such as name) to coreboot or a chooser
payload.

Jordan

[Peter Stuge]

On Tue, May 27, 2008 at 01:46:52PM -0600, Jordan Crouse wrote:
> libpayload: Add PAYLOAD_PARAM macro
>
> Adds the PAYLOAD_PARAM macro to store payload information in a data
> section in the ELF which can be consumed by other entities.

Great!
> Signed-off-by: Jordan Crouse

Per discussion on IRC, if the macro name is changed to PAYLOAD_INFO
(and the other patches I acked updated to follow suit) then this is:

Acked-by: Peter Stuge
> Index: libpayload/include/libpayload.h
>
> --- libpayload.orig/include/libpayload.h	2008-05-15 10:05:02.000000000 -0600
> +++ libpayload/include/libpayload.h	2008-05-15 11:34:20.000000000 -0600
> @@ -55,6 +55,18 @@
>
> #define RAND_MAX 0x7fffffff
>
> +/* Payload information parameters - these are used to pass information
> to the entity loading the payload
> Usage:  PAYLOAD_PARAM(key, value)
> Example:  PAYLOAD_PARAM(name, "CoreInfo!")
> */
>
> +#define _pstruct(key) __pinfo_ ##key
> +#define PAYLOAD_PARAM(key, value)                                        \
> +static const char _pstruct(key)[]                                        \
> __attribute__((__used__))                                              \
> __attribute__((section(".note.pinfo"),unused)) = #key "=" value
>
> /* Some NVRAM byte definitions */
>  #define NVRAM_RTC_SECONDS        0
>  #define NVRAM_RTC_MINUTES        2
> Index: libpayload/lib/libpayload.ldscript
> ===================================================================
> --- libpayload.orig/lib/libpayload.ldscript	2008-05-15 10:49:33.000000000 -0600
> +++ libpayload/lib/libpayload.ldscript	2008-05-15 11:34:05.000000000 -0600
> @@ -81,5 +81,5 @@
>
> _end = .;
> /DISCARD/ : { *(.comment) *(.note) *(.note.*) }
> /DISCARD/ : { *(.comment) }
>
> }

[Jordan Crouse]

On 27/05/08 21:58 +0200, Peter Stuge wrote:
> On Tue, May 27, 2008 at 01:46:52PM -0600, Jordan Crouse wrote:
> > libpayload: Add PAYLOAD_PARAM macro
> >
> > Adds the PAYLOAD_PARAM macro to store payload information in a data
> > section in the ELF which can be consumed by other entities.
>
> Great!
> > Signed-off-by: Jordan Crouse
>
> Per discussion on IRC, if the macro name is changed to PAYLOAD_INFO
> (and the other patches I acked updated to follow suit) then this is:
>
> Acked-by: Peter Stuge

r3354 with PAYLOAD_PARAM renamed to PAYLOAD_INFO.
> > Index: libpayload/include/libpayload.h
> >
> > --- libpayload.orig/include/libpayload.h	2008-05-15 10:05:02.000000000 -0600
> > +++ libpayload/include/libpayload.h	2008-05-15 11:34:20.000000000 -0600
> > @@ -55,6 +55,18 @@
> >
> > #define RAND_MAX 0x7fffffff
> >
> > +/* Payload information parameters - these are used to pass information
> > to the entity loading the payload
> > Usage:  PAYLOAD_PARAM(key, value)
> > Example:  PAYLOAD_PARAM(name, "CoreInfo!")
> > */
> >
> > +#define _pstruct(key) __pinfo_ ##key
> > +#define PAYLOAD_PARAM(key, value)                                        \
> > +static const char _pstruct(key)[]                                        \
> > __attribute__((__used__))                                              \
> > __attribute__((section(".note.pinfo"),unused)) = #key "=" value
> >
> > /* Some NVRAM byte definitions */
> >  #define NVRAM_RTC_SECONDS        0
> >  #define NVRAM_RTC_MINUTES        2
> > Index: libpayload/lib/libpayload.ldscript
> > ===================================================================
> > --- libpayload.orig/lib/libpayload.ldscript	2008-05-15 10:49:33.000000000 -0600
> > +++ libpayload/lib/libpayload.ldscript	2008-05-15 11:34:05.000000000 -0600
> > @@ -81,5 +81,5 @@
> >
> > _end = .;
> > /DISCARD/ : { *(.comment) *(.note) *(.note.*) }
> > /DISCARD/ : { *(.comment) }
> >
> > }