[coreboot-gerrit] Patch merged into coreboot/master: sb/amd/sb700: Add option to increase SPI speed to 33MHz
gerrit at coreboot.org
gerrit at coreboot.org
Fri Aug 26 18:22:37 CEST 2016
the following patch was just integrated into master:
commit 6e5421d2a887737fc7c8a916d54151f9b1706f6d
Author: Timothy Pearson <tpearson at raptorengineering.com>
Date: Tue Aug 23 15:41:05 2016 -0500
sb/amd/sb700: Add option to increase SPI speed to 33MHz
Some SB700-based systems and ROMs support high speed (33MHz) SPI
access instead of the power-on default 16.5MHz. Add an option
to enable high speed SPI access in the bootblock, and set the
default value to Disabled. This greatly decreases boot time on
SB700-based systems, especiall when a large payload is in use.
On a KGPE-D16 with a Petitboot (Linux + initramfs) payload, the
command prompt was accessible within 20 seconds of power on, which
incidentally is faster than the proprietary BIOS on the same machine
could even reach the GRUB bootloader.
Change-Id: Iadbd9bb611754262ef75a5e5a6ee4390a46e45cf
Signed-off-by: Timothy Pearson <tpearson at raptorengineering.com>
Test: Booted KGPE-D16 with Linux payload
Reviewed-on: https://review.coreboot.org/16306
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply at raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth at google.com>
See https://review.coreboot.org/16306 for details.
-gerrit
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