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vboot: Introduce kconfig variable for VBNV backing storage 

This introduces a new kconfig variable to select the VBNV backing
store explicitly instead of inferring it from CPU/SoC architecture.

x86 platforms have historically relied only on CMOS to store VBNV
variables, while ARM-based platforms have traditionally relied on
the EC. Neither of those solutions are going to scale well into
the future if/when CMOS disappears and we make ARM-based systems
without an EC.

BUG=chrome-os-partner:29546
BRANCH=none
TEST=compiled for nyan_blaze and samus

Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: I4a8dadfb6bb666baf1ed4bec98b29c145dc4a1e7
Original-Reviewed-on: https://chromium-review.googlesource.com/213877
Original-Reviewed-by: Stefan Reinauer <reinauer@google.com>
Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org>
Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org>
(cherry picked from commit d088fc71b2e2b45e826d3dedb8e536ad58b8d296)

Change-Id: Iea325a8c4d07055143e993d89b827f86b8312330
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8777
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
David Hendricks 2014-08-22 15:40:15 -07:00 committed by Aaron Durbin
parent 8c7c05a389
commit dad16b1c58
2 changed files with 16 additions and 4 deletions
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12
src/vendorcode/google/chromeos/Kconfig
View File

@ -50,6 +50,18 @@ config VBNV_SIZE
CMOS storage size for VbNv data. This value must match cmos.layout
in the mainboard directory.
config CHROMEOS_VBNV_CMOS
bool "Vboot non-volatile storage in CMOS."
default n
help
VBNV is stored in CMOS
config CHROMEOS_VBNV_EC
bool "Vboot non-volatile storage in EC."
default n
help
VBNV is stored in EC
config CHROMEOS_RAMOOPS
bool "Reserve space for Chrome OS ramoops"
default y

8
src/vendorcode/google/chromeos/Makefile.inc
View File

@ -17,10 +17,10 @@
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vbnv_cmos.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += vbnv_cmos.c
romstage-$(CONFIG_ARCH_ROMSTAGE_ARMV7) += vbnv_ec.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_ARMV7) += vbnv_ec.c
romstage-$(CONFIG_CHROMEOS_VBNV_CMOS) += vbnv_cmos.c
ramstage-$(CONFIG_CHROMEOS_VBNV_CMOS) += vbnv_cmos.c
romstage-$(CONFIG_CHROMEOS_VBNV_EC) += vbnv_ec.c
ramstage-$(CONFIG_CHROMEOS_VBNV_EC) += vbnv_ec.c
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vboot.c
ramstage-$(CONFIG_ELOG) += elog.c
ramstage-y += gnvs.c