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This brings the old raminit implementation for CX700 back. It was
removed in commit e99f0390b9b8 (Remove VIA CX700 northbridge sup-
port). The code is mostly unchanged, three minor issues are fixed:
* A shift (>>= 2) was missing when reading tRRD from SPD byte 28.
The fixed value matches what the vendor BIOS of a VIA EPIA-EX
board programs. The code also suggests that we are looking for
a small value (<= 19 for DDR2-533).
* We allow the board port to specify which clock outputs should
be enabled now. This is necessary for the VIA EPIA-EX, which
needs the ALL_MCLKO setting (instead of the previously hard-
coded MCLKO2.
* When programming the DQS output delays, we considered the 1~2
rank values only for single-rank configurations. Changing the
`< 2` to `<= 2` brings us closer to the vendor values on the
VIA EPIA-EX.
Otherwise a lot of cosmetics changed. Partly because the original
code was to be #included into another C file, but also to satisfy
checkpatch. Also, all the #if'd code was removed (32-bit width
option, ECC, etc.).
Change-Id: Ibc36b4f314cdf47f18c8be0fcb98218c50938e94
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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