ADL encodes CK cycle time as tCKMin whereas Sabrina encodes WCK cycle
time. Encode tCKMin as per the respective advisories.
BUG=None
TEST=Generate the SPD and ensure that tCKMin is encoded accordingly.
Minimum CAS Latency time is also impacted and is encoded accordingly.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I99ada7ead3a75befb0f934af871eecc060adcb26
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
ADL supports 8B Bank Architecture, whereas Sabrina supports either BG or
16B Bank Architectures depending on the speed. This influences SDRAM
Density and Banks, SDRAM Addressing bytes in SPD. Encode them as per the
individual SoC advisories.
BUG=b:211510456
TEST=Generate SPDs for Sabrina.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: Ic854ccccb2b301e75d0f28cd36daf87fd41e07e7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61948
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
ADL and Sabrina provide different advisories to encode Optional SDRAM
features (byte indices 7 & 9). Encode those bytes as per the respective
advisories.
BUG=b:211510456
TEST=Generate the SPD binaries for Sabrina.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: Icac8ae148458162768a919d9690d7bf96734e6c0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61730
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
ADL and Sabrina have different advisory regarding encoding the bus
width. Encode the bus width as per the respective advisories.
BUG=b:211510456
TEST=Build spd_gen and ensure that the bus width is encoded as expected.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: Ia12a5bd8f70a70ca8a510ecf00f6268c6904ec25
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61639
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Add support to generate SPD binary for Sabrina SoC. Mainboards using
Sabrina SoC are planning to use LP5 memory technology. Some of the SPD
bytes expected by Sabrina differ from the existing ADL. To start with,
memory training code for Sabrina expects SPD Revision 1.1. More patches
will follow to accommodate additional differences.
BUG=b:211510456
TEST=make -C util/spd_tools.
Generate SPD binaries for the existing memory parts in
lp5/memory_parts.json and observe that SPDs for Sabrina is generated as
a separate set without impacting the ADL mainboards.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I2a2c0d0e8c8cbebf3937a99df8f170ae8afc75df
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61542
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Add documentation describing how to add support for a new memory
technology to spd_tools:
- Add a section to the README.
- Document the memTech interface in spd_gen.go.
BUG=b:191776301
TEST=None
Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: Ie710c1c686ddf5288db35cf43e5f1ac9b1974305
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59005
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add LP5 support to spd_tools. Currently, only Intel Alder Lake (ADL) is
supported.
The SPDs are generated based on a combination of:
- The LPDDR5 spec JESD209-5B.
- The SPD spec SPD4.1.2.M-2 (the LPDDR3/4 spec is used since JEDEC has
not released an SPD spec for LPDDR5).
- Intel recommendations in advisory #616599.
BUG=b:201234943, b:198704251
TEST=Generate the SPD and manifests for a test part, and check that the
SPD matches Intel's expectation. More details in CB:58680.
Change-Id: Ic1e68d44f7c0ad64aa9904b7e1297d24bd5db56e
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58679
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Ensure that the order of entries in each platform manifest is consistent
every time spd_gen is run.
BUG=b:191776301
TEST=Run spd_gen for lp4x and ddr4, check that the manifests are
unchanged.
Change-Id: I7bfea65c8fc781df80a8725c0cf20c7547c857e8
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57773
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Currently spd_tools treats PCO and PLK as separate platforms. This is
unnecessary since they have the same SPD requirements. Remove PLK, and
use PCO as the platform for all zork variants.
BUG=b:191776301
TEST=None
Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I7eeeab53fb3e0d92c3675fb80b4747297d4257ab
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Currently there are two versions of spd_tools: one for LP4x and one for
DDR4. This change is the first step in unifying these into a single
tool.
This change implements a unified version of the spd_gen tool, by
combining the functionality currently in lp4x/gen_spd.go and
ddr4/gen_spd.go. The unified version takes the memory technology as an
argument, and generates SPD files for all platforms supporting that
technology.
BUG=b:191776301
TEST=Compare the SPDs generated by the old and new versions of the tool
for all supported platforms. For reference, the test script used is
here: https://review.coreboot.org/c/coreboot/+/57511
Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I7fc036996dbafbb54e075da0c3ac2ea0886a6db2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57512
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
