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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 CMOS storage size for VbNv data. This value must match cmos.layout
in the mainboard directory. 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 config CHROMEOS_RAMOOPS
bool "Reserve space for Chrome OS ramoops" bool "Reserve space for Chrome OS ramoops"
default y 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 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
## ##
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vbnv_cmos.c romstage-$(CONFIG_CHROMEOS_VBNV_CMOS) += vbnv_cmos.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += vbnv_cmos.c ramstage-$(CONFIG_CHROMEOS_VBNV_CMOS) += vbnv_cmos.c
romstage-$(CONFIG_ARCH_ROMSTAGE_ARMV7) += vbnv_ec.c romstage-$(CONFIG_CHROMEOS_VBNV_EC) += vbnv_ec.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_ARMV7) += vbnv_ec.c ramstage-$(CONFIG_CHROMEOS_VBNV_EC) += vbnv_ec.c
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vboot.c romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vboot.c
ramstage-$(CONFIG_ELOG) += elog.c ramstage-$(CONFIG_ELOG) += elog.c
ramstage-y += gnvs.c ramstage-y += gnvs.c