[M] Change in coreboot[master]: util/amdfwtool: Add ability to split hash table

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Bao Zheng, Felix Held, Karthik Ramasubramanian, Martin Roth, Raul Rangel.

Hello Bao Zheng, Felix Held, Martin Roth, Raul Rangel, Tim Van Patten, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/75188?usp=email

to look at the new patch set (#4).

The following approvals got outdated and were removed:
Code-Review+2 by Raul Rangel, Verified+1 by build bot (Jenkins)

Change subject: util/amdfwtool: Add ability to split hash table
......................................................................

util/amdfwtool: Add ability to split hash table

Hash table containing hashes of all signed PSP binaries is compiled at
build time and installed into the concerned CBFS. During boot, PSP
verstage reads the hash table binary and passes it to PSP bootloader.
PSP bootloader in turn uses the hash table to verify the signed PSP
binaries. Currently the hashes for all the signed PSP binaries are
compiled into one hash table. On upcoming platforms with more number of
signed PSP binaries, PSP bootloader does not have resources to handle
one monolithic hash table. Instead PSP bootloader recommends splitting
them into smaller hash tables (currently limited to 3 hash tables).

Update amdfwtool tool to support splitting hash tables. This is done by
adding an optional hash table id to the entries in the amdfw.cfg file.
By default, one hash table binary is always compiled and it's name is of
the format ${signed_rom}.hash. If an entry has a hash table id defined,
then this utility will compile a separate hash table binary whose name
is of the format ${signed_rom}.${N}.hash where N is the hash table id.

BUG=b:277292697
TEST=Build Skyrim BIOS image and boot to OS. Ensure that the hash table
is identical with and without this change. Perform suspend/resume
cycles, warm/cold reset cycles for 50 iterations each.
TEST=Artificially inject hash table id against some entries in
amdfw.cfg and ensure that the concerned hash table binaries are getting
compiled.

Change-Id: I7ef338d67695a34c33b5c166924832939f381191
Signed-off-by: Karthikeyan Ramasubramanian 
---
M util/amdfwtool/amdfwtool.h
M util/amdfwtool/data_parse.c
M util/amdfwtool/signed_psp.c
3 files changed, 128 insertions(+), 39 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/75188/4