Change in coreboot[master]: ppc64/bootblock_crt0.S: minimal implementation for bootblock C enviro...

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Krystian Hebel, Sergii Dmytruk, Ron Minnich.
Hello build bot (Jenkins), Krystian Hebel, Ron Minnich,

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

https://review.coreboot.org/c/coreboot/+/57076

to look at the new patch set (#2).

Change subject: ppc64/bootblock_crt0.S: minimal implementation for bootblock C environment
......................................................................

ppc64/bootblock_crt0.S: minimal implementation for bootblock C environment

BSS is loaded as part of the bootblock, it is zeroed in the file so it
doesn't have to be cleared explicitly by the code.

Code for clearing is left as a comment along with a warning about alignment
requirements.

Vector operations are sometimes generated for code such as
'uint8_t x[32] = {0}', this results in an exception when vector registers
(VR) are not enabled. VSR (vector-scalar register) operations are also
enabled, there is no reason not to.

Change-Id: I878ef61619eb4a191805c8911d001312a0d717a0
Signed-off-by: Krystian Hebel 
---
M src/arch/ppc64/Makefile.inc
D src/arch/ppc64/bootblock.S
A src/arch/ppc64/bootblock_crt0.S
3 files changed, 94 insertions(+), 11 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/76/57076/2