[L] Change in coreboot[main]: acpi: Add PPTT support

[David Milosevic (Code Review)]

Attention is currently required from: Arthur Heymans, Cliff Huang, David Milosevic, Lance Zhao, Maximilian Brune, Patrick Rudolph, Tim Wawrzynczak.

Hello Arthur Heymans, Cliff Huang, Lance Zhao, Maximilian Brune, Tim Wawrzynczak, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/78071?usp=email

to look at the new patch set (#9).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: acpi: Add PPTT support
......................................................................

acpi: Add PPTT support

This patch adds code to generate Processor Properties
Topology Tables (PPTT) compliant to the ACPI 6.4 specification.

- The 'acpi_get_pptt_topology' hook is mandatory once ACPI_PPTT
 is selected. Its purpose is to return a pointer to a topology tree,
 which describes the relationship between CPUs and caches. The hook
 can be provided by, for example, mainboard code.

- The optional hook 'acpi_cleanup_pptt_topology' can be implemented
 to cleanup remainders of 'acpi_get_pptt_topology'. For example,
 one might use dynamic memory allocations in order to setup the
 topology tree. The hook can then be used to free that memory.

Background: We are currently working on a mainboard which requires
a valid PPTT table. Patch was tested for that mainboard.

Change-Id: Ia119e1ba15756704668116bdbc655190ec94ff10
Signed-off-by: David Milosevic 
---
M src/acpi/Kconfig
M src/acpi/Makefile.inc
M src/acpi/acpi.c
A src/acpi/acpi_pptt.c
M src/include/acpi/acpi.h
5 files changed, 285 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/78071/9