2bb5ecbcd6
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>
16 lines
451 B
Plaintext
16 lines
451 B
Plaintext
config OCP_VPD
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bool
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default n
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depends on VPD
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help
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It implements functions that get common VPD variables for OCP projects.
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config LINUXPAYLOAD_CMDLINE_VPD_OVERWRITE
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bool
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default n
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depends on VPD
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help
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Overwrite Linux payload's kernel command line by using VPD. Currently only
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overwrite the value of kernel command line 'loglevel'. The Linux kernel command
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line data is detected in the last segment loaded in memory and overwritten.
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