[coreboot-gerrit] Patch set updated for coreboot: a426095 Add a KEEP_BOOT_COUNT Kconfig option.
Denis Carikli (GNUtoo@no-log.org)
gerrit at coreboot.org
Sun Oct 27 20:31:39 CET 2013
Denis Carikli (GNUtoo at no-log.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3990
Author: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
Date: Mon Oct 21 01:56:47 2013 +0200
Add a KEEP_BOOT_COUNT Kconfig option.
The use case of that option is to inform coreboot (trough the nvram) at the
next boot, that the computer could not fully boot to boot to an usable state.
In that case, the boot count is incremented by one.
Previously there was no way to tell coreboot that the computer really booted
successfully, because it was assumed that if set_boot_successful was called
in ramstage, then the computer would have booted successfully.
However many things can go wrong after that point, for instance the payload
could fail to boot, or the operating system's kernel could fail to boot too,
due to the wrong configurations passed to it by coreboot and the payload.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
src/Kconfig | 8 ++++++++
src/lib/fallback_boot.c | 3 +++
2 files changed, 11 insertions(+)
diff --git a/src/Kconfig b/src/Kconfig
index 10f8c18..ac7b610 100644
@@ -47,6 +47,14 @@ config CBFS_PREFIX
Select the prefix to all files put into the image. It's "fallback"
by default, "normal" is a common alternative.
+ bool "Keep boot count"
+ default n
+ depends on PC80_SYSTEM
+ If enabled, the boot count is not reset anymore in the ramstage.
+ This delegates that task to the software running after the ramstage.
bool "Use alternative cbfs_load_payload() implementation."
diff --git a/src/lib/fallback_boot.c b/src/lib/fallback_boot.c
index 62bc0a5..e1acefd 100644
@@ -17,8 +17,11 @@ void boot_successful(void)
/* Remember this was a successful boot */
/* turn off the boot watchdog */
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