b41914952d
These Kconfig options provided a level of configurability that is almost never necessary, so they are being moved into ordinary preprocessor defines in elog_internal.h. The new threshold to trigger shrinking is relative to the number of additional (maximum-size) events that can fit, and the new target post-shrink size is a percentage of the total ELOG area size. BUG=chromium:467820 TEST=Add loop at the end of elog_init() that fills the ELOG area to just below full_threshold with dummy events. Observe successful shrinkage when the next event is logged. BRANCH=None Change-Id: I414c4955a2d819d112ae4f0c7d3571576f732336 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: ce439361e3954a2bf5186292f96936329171cf56 Original-Change-Id: I926097f86262888dcdd47d73fba474bb2e19856a Original-Signed-off-by: Sol Boucher <solb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/260501 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-on: http://review.coreboot.org/9869 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
84 lines
2.6 KiB
Text
84 lines
2.6 KiB
Text
##
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## This file is part of the coreboot project.
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##
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## Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; version 2 of the License.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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##
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config ELOG
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depends on SPI_FLASH
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bool "Support for flash based event log"
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default n
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help
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Enable support for flash based event logging.
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if ELOG
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config ELOG_DEBUG
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bool "Enable debug output for event logging"
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default n
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config ELOG_FLASH_BASE
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hex "Event log offset into flash"
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default 0
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help
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Offset into the flash chip for the ELOG block.
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This should be allocated in the FMAP.
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config ELOG_AREA_SIZE
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hex "Size of Event Log area in flash"
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default 0x1000
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help
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This should be a multiple of flash block size.
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Default is 4K.
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config ELOG_CBMEM
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bool "Store a copy of ELOG in CBMEM"
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default n
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help
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This option will have ELOG store a copy of the flash event log
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in a CBMEM region and export that address in SMBIOS to the OS.
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This is useful if the ELOG location is not in memory mapped flash,
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but it means that events added at runtime via the SMI handler
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will not be reflected in the CBMEM copy of the log.
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endif
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config ELOG_GSMI
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depends on ELOG && SPI_FLASH_SMM && SMM_TSEG
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bool "SMI interface to write and clear event log"
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default n
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help
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This interface is compatible with the linux kernel driver
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available with CONFIG_GOOGLE_GSMI and can be used to write
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kernel reset/shutdown messages to the event log.
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config ELOG_BOOT_COUNT
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depends on ELOG
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bool "Maintain a monotonic boot number in CMOS"
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default n
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help
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Store a monotonic boot number in CMOS and provide an interface
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to read the current value and increment the counter. This boot
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counter will be logged as part of the System Boot event.
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config ELOG_BOOT_COUNT_CMOS_OFFSET
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depends on ELOG && ELOG_BOOT_COUNT && !USE_OPTION_TABLE
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int "Offset in CMOS to store the boot count"
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default 0
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help
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This value must be greater than 16 bytes so as not to interfere
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with the standard RTC region. Requires 8 bytes.
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