Attention is currently required from: Dinesh Gehlot, Kapil Porwal, Kilari Raasi, Nick Vaccaro, Paul Menzel, Subrata Banik.
Hello Dinesh Gehlot, Kapil Porwal, Nick Vaccaro, Ronak Kanabar, Subrata Banik, build bot (Jenkins),
I'd like you to reexamine a change. Please visit
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Change subject: intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
......................................................................
intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
Currently, the RPL FSP retrieves the chipset initialization
version via HECI commands due to the MBP HOB creation being
disabled (SkipMbpHob=1).This method has resulted in an
approximate 150ms increase in boot time.Investigations are
ongoing to determine the cause of the delay when using HECI
commands.As an interim solution, this patch sets SkipMbpHob=0,
enabling the use of MBP HOB or acquiring the chipset
initialization version, which is expected to reduce the boot
time.
BUG=b:328430167
TEST= Able to build,boot and collect boot time data of brya.
With this patch:
963:returning from FspMultiPhaseSiInit 1,337,481 (249,046)
Without this patch:
963:returning from FspMultiPhaseSiInit 1,496,268 (408,194)
Signed-off-by: Kilari Raasi <kilari.raasi(a)intel.com>
Change-Id: I8a99a57b644732074e41051d99e63576f1edd229
---
M src/soc/intel/alderlake/Kconfig
1 file changed, 2 insertions(+), 3 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/81446/5
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Attention is currently required from: Dinesh Gehlot, Kapil Porwal, Kilari Raasi, Nick Vaccaro, Paul Menzel, Subrata Banik.
Kilari Raasi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81446?usp=email )
Change subject: intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
......................................................................
Patch Set 3:
(4 comments)
Commit Message:
https://review.coreboot.org/c/coreboot/+/81446/comment/b37a091c_42f93104 :
PS1, Line 11:
> Why was it added in the first place, and why can it be removed now?
Updated commit message with details.
Commit Message:
https://review.coreboot.org/c/coreboot/+/81446/comment/7bcbddc8_66f5f48b :
PS2, Line 8:
: By removing FSP_PUBLISH_MBP_HOB for RPL SkipMbpHob is set to 0.
: And it prevents the boot time increase of ~158ms.
> i guess you are presenting the twisted fact here, ideally we wish to avoid sending MBP cmd and creat […]
Done
https://review.coreboot.org/c/coreboot/+/81446/comment/a5e260fe_80456275 :
PS2, Line 18: With
> without
Acknowledged
File src/soc/intel/alderlake/Kconfig:
https://review.coreboot.org/c/coreboot/+/81446/comment/d52b5098_8dcd78b3 :
PS2, Line 529: RPL
> consider changing this now?
Acknowledged
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Attention is currently required from: Dinesh Gehlot, Kapil Porwal, Kilari Raasi, Nick Vaccaro, Paul Menzel, Ronak Kanabar.
Hello Dinesh Gehlot, Kapil Porwal, Nick Vaccaro, Ronak Kanabar, Subrata Banik, build bot (Jenkins),
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/81446?usp=email
to look at the new patch set (#3).
The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)
Change subject: intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
......................................................................
intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
Currently, the RPL FSP retrieves the chipset initialization
version via HECI commands due to the MBP HOB creation being
disabled (SkipMbpHob=1).This method has resulted in an
approximate 150ms increase in boot time.Investigations are
ongoing to determine the cause of the delay when using HECI
commands.As an interim solution, this patch sets SkipMbpHob=0,
enabling the use of MBP HOB or acquiring the chipset
initialization version, which is expected to reduce the boot
time.
BUG=b:328430167
TEST= Able to build,boot and collect boot time data of brya.
With this patch:
963:returning from FspMultiPhaseSiInit 1,337,481 (249,046)
Without this patch:
963:returning from FspMultiPhaseSiInit 1,496,268 (408,194)
Signed-off-by: Kilari Raasi <kilari.raasi(a)intel.com>
Change-Id: I8a99a57b644732074e41051d99e63576f1edd229
---
M src/soc/intel/alderlake/Kconfig
1 file changed, 2 insertions(+), 2 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/81446/3
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