Without explicit DDR5 support, print_spd_info() was decoding DDR5 DIMMs
with the DDR4 SPD layout, so banks, ranks, rows, columns, and module
size were all displaying incorrect values.
Add DDR5-specific decoding in spd_bin.c using JESD400-5 byte positions.
Define these offsets in ddr5.h and branch in each getter when
dram_type is DDR5 so printed SPD info matches the actual module.
Fix printk reporting DIMM module size to only report "per channel" when
the DIMM actually contains multiple channels.
TEST=build/boot on out-of-tree board Erying SRMJ4 and Starlabs Starbook
MTL. Verify DIMM info printed in cbmem console is correct.
Change-Id: I7f418db3f89c67c2a71b2c327bb511a78faf7300
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91145
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
c731fd720c