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authorSubrata Banik <subratabanik@google.com>2023-04-09 08:07:11 +0000
committerSubrata Banik <subratabanik@google.com>2023-04-11 11:37:38 +0000
commitcda48b297c75ca79a956bb2033c5ed28e426543c (patch)
tree8181f97c98c051b35b1d6b58d636fd3e0d801eb1 /util/pmh7tool/Makefile
parente46dbf771b597995667c0217f5652e47e9171628 (diff)
soc/intel/{adl, cmn}: Send CSE EOP Async CMD early
This patch sends the CSE EOP command asynchronous implementation early as part of `soc_init_pre_device`. Without this patch the duration between asynchronous CSE EOP send and receive commands is not ample whichcauses idle delay while waiting for EOP response. The goal of the CSE async implementation is to avoid idle delay while capturing the response from CSE EOP cmd. This patch helps to create ample duration between CSE EOP command being sent and response being captured. TEST=Able to boot google/marasov EVT sku to ChromeOS and observed ~30ms of boot time savings (across warm and cold reset scenarios). Without this patch: 963:returning from FspMultiPhaseSiInit 907,326 (97,293) ... ... 115:finished elog init 967,343 (2,581) 942:before sending EOP to ME              967,821 (478) …  16:finished LZMA decompress (ignore for x86)    1,017,937 (12,135) 943:after sending EOP to ME                     1,067,799 (49,861) … … 1101:jumping to kernel                          1,144,587 (13,734) Total Time: 1,144,549 With this patch: 963:returning from FspMultiPhaseSiInit 918,291 (97,320) 942:before sending EOP to ME                    918,522 (230)   ... ... 16:finished LZMA decompress (ignore for x86) 1,029,476 (12,483)   943:after sending EOP to ME                     1,033,456 (3,980)   ... ...   1101:jumping to kernel                          1,111,410 (14,007) Total Time: 1,111,375 Change-Id: Idaf45ef28747bebc02347f0faa77cc858a4a8ef1 Signed-off-by: Subrata Banik <subratabanik@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/74293 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tarun Tuli <taruntuli@google.com>
Diffstat (limited to 'util/pmh7tool/Makefile')
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