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gen_part_id.go
This change adds mem_list_variant.txt that contains the list of
memory parts used by ripto and Makefile.inc generated by
gen_part_id.go using mem_list_variant.txt.
In the final change of the series, all volteer variants will be
switched from using the current SPDs to new auto-generated SPDs.
Differences in auto-generated SPD from current SPD are as follows:
Part: K4U6E3S4AA-MGCL
Byte# Current New Explanation
6 0x95 0x94 Signal loading is not used by
MRC. Bits 1:0 set to 0.
16 0x48 0x00 Signal loading is not used by
MRC. Set to 0x00.
19 0x0F 0xFF As per JEDEC spec, tckMax should be
100ns. So, value should be 0xff as
per datasheet.
21,22 0x55,0x00 0x54,0x05 As per datasheet, part supports CAS
latencies 20,24,28,32,36. So value
should be 0x54, 0x05.
24 0x8C 0x87 taa is .468ns * CAS-36 which results
in byte 24 being 0x87 as per datasheet.
123 0x00 0xE5 Fine offset for taa. Expected value
is 0xE5 as per datasheet.
124 0x7F 0x00 Fine offset for tckMax. Expected
value is 0x00 as per datasheet.
125 0xE1 0xE0 Fine offset for tckMin. As per
datasheet tckMin is 0.468ns. So, this
comes out to be 0xE0.
BUG=b:155239397,b:147321551
Change-Id: Ibb06443a5c7fd80915f66b806cdd7c3ae1275b05
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41614
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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