[coreboot-gerrit] [M] Change in coreboot[main]: drivers/intel/fsp2_0: Add FSP 2.4 support

[Jérémy Compostella (Code Review)]

Attention is currently required from: Andrey Petrov, Bora Guvendik, Ronak Kanabar, Wonkyu Kim.

Hello Andrey Petrov, Bora Guvendik, Ronak Kanabar, Wonkyu Kim,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/80275?usp=email

to look at the new patch set (#3).

Change subject: drivers/intel/fsp2_0: Add FSP 2.4 support
......................................................................

drivers/intel/fsp2_0: Add FSP 2.4 support

Intel Firmware Support Package 2.4 specification brings some
significant changes compared to version 2.3 (cf. documents 736809 and
644852 respectively):

1. It supports FSP-M multi-phase init. Some fields have been added to
   the FSP header data structure for this purpose.

2. The `FSPM_ARCH2_UPD' and `FSPS_ARCH2_UPD' data structures must be
   used in place of `FSPM_ARCH_UPD' and `FSPS_ARCH_UPD' respectively.

3. It supports 64-bits FSP:

- FSP functions must be called with the stack 16-bytes aligned.
     This is already setup properly with the default value of the
     `mpreferred-stack-boundary' compiler option (4).

- The FSP stack buffer supplied by coreboot through the `StackBase'
     UPD must be 16-bytes aligned.

A few notes:

- `PLATFORM_USES_FSP2_X86_32' is set to `n' by default if FSP 2.4 is
  enabled as 64-bits FSP should be norm moving forward.

- Similarly to what is done for silicon initialization, timestamps and
  post-codes are used during the memory initialization
  multi-phase. However, since post-codes are in short supply, memory and
  silicon multi-phase init share the same post-codes.

Change-Id: I1c24d26e105c3dcbd9cca0e7197ab1362344aa97
Signed-off-by: Jeremy Compostella 
---
M src/commonlib/include/commonlib/console/post_codes.h
M src/commonlib/include/commonlib/timestamp_serialized.h
M src/drivers/intel/fsp2_0/Kconfig
M src/drivers/intel/fsp2_0/include/fsp/info_header.h
M src/drivers/intel/fsp2_0/include/fsp/util.h
M src/drivers/intel/fsp2_0/memory_init.c
M src/drivers/intel/fsp2_0/silicon_init.c
M util/cbfstool/eventlog.c
8 files changed, 126 insertions(+), 33 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/80275/3