Add a new Kconfig LINUXPAYLOAD_CMDLINE_VPD_OVERWRITE that can overwrite
Linux payload's kernel command line from VPD. Currently only overwrite
Linux kernel command line 'loglevel' via VPD key 'kernel_log_level'.
TESTED=On OCP Delta Lake, with kernel_log_level set to 0, warm reboot
time can see about 10 seconds improvement comparing to kernel log level
7.
Change-Id: Idf06c7ab9958c940fc3b23d560bb9dade991a6da
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75510
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Move get_loglevel_from_vpd from mb/ocp/deltalake to driver
drivers/ocp/vpd/loglevel_vpd.c.
Change-Id: I70af1051f63c527fd8150f5ecbe4765b4aaacd20
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71936
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Add VPD processing framework to be shared by OCP mainboards:
* define VPD configuration items in vpd.h.
* add helper functions:
** get_bool_from_vpd()
** get_int_from_vpd_range()
Change-Id: I705bea348b1611f25ccbd798b77cfee22ec30f0f
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Signed-off-by: Tim Chu <Tim.Chu@quantatw.com>
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Signed-off-by: Jonathan Zhang <jonzhang@meta.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68784
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
