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| author | Christian Geddes <crgeddes@us.ibm.com> | 2019-09-20 14:23:21 -0500 |
|---|---|---|
| committer | Daniel M Crowell <dcrowell@us.ibm.com> | 2019-09-27 17:29:55 -0500 |
| commit | 0f3e041cbe1c7d6d2ae203187f843b1714b287db (patch) | |
| tree | 3ae30da8ad9a402c9b11dbd2ccb20eec024db199 /src/include | |
| parent | 7b87226522ddaf755b241c8352f5c7e9ed273741 (diff) | |
| download | talos-hostboot-0f3e041cbe1c7d6d2ae203187f843b1714b287db.tar.gz talos-hostboot-0f3e041cbe1c7d6d2ae203187f843b1714b287db.zip | |
Add new DDR4 DDIMM keyword ENTIRE_SPD_WITHOUT_EFD
With the DDR4 DDIMM SPD there are really two parts. There is the
640 bytes of information you typically see in a DIMM's SPD and then
there are 2 KB - 640 bytes of EFD (extensible function descriptors)
to give vendors space to add customized data. In many cases we want
the ENTIRE_SPD (including the EFD area) but in other cases we want
to save some time/space and only read in the first 640 bytes. This
new keyword will give us that flexibility.
Change-Id: I88ed58b37417b576f2ec4a779ee0c114791c6c21
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/84070
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: Matthew Raybuck <matthew.raybuck@ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/usr/vpd/spdenums.H | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/include/usr/vpd/spdenums.H b/src/include/usr/vpd/spdenums.H index ecfe51098..f1dc7aa29 100644 --- a/src/include/usr/vpd/spdenums.H +++ b/src/include/usr/vpd/spdenums.H @@ -356,9 +356,15 @@ enum LRMM_CRC = SPD_FIRST_MOD_SPEC | 0xb4, SPD_LAST_MOD_SPEC = SPD_FIRST_MOD_SPEC | 0xb5, + // Latest DDR SPD specifcations have standard SPD + // in the front followed by extendable function + // descriptors (EFDs). ENTIRE_SPD will grab everything + // ENTIRE_SPD_WITHOUT_EFD will skip getting the EFD info + ENTIRE_SPD_WITHOUT_EFD = 0xFFFD, + //read entire SPD contents + ENTIRE_SPD = 0xFFFE, // This keyword should be last in the list // Invalid Keyword - ENTIRE_SPD = 0xFFFE, //read entire SPD INVALID_SPD_KEYWORD = 0xFFFF, }; |
