diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2012-10-31 17:30:13 -0700 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2012-11-13 18:24:06 +0100 |
| commit | 7004b7c9e61640f1e7e7bf9043bf7b2a8603d956 (patch) | |
| tree | 0d59a8d0dd30f16f30754f5fb5a07b29b02f6376 /src/southbridge | |
| parent | 1bfbbc0d8f68b43af7ccda1dde796ed15950c508 (diff) | |
Add Kconfig option to lock/unlock ME firmware during build
For reasons of security and testing we want to be able to
enable/disable ME section locking through a config option.
Change-Id: I341c577cdae86be62c0e3d32bbd6b3333c004a5f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1798
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/Kconfig | 13 | ||||
| -rw-r--r-- | src/southbridge/intel/bd82x6x/Makefile.inc | 9 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/Kconfig b/src/southbridge/intel/bd82x6x/Kconfig index 7634b801ff..e330fb4382 100644 --- a/src/southbridge/intel/bd82x6x/Kconfig +++ b/src/southbridge/intel/bd82x6x/Kconfig @@ -58,4 +58,17 @@ config HPET_MIN_TICKS hex default 0x80 +config LOCK_MANAGEMENT_ENGINE + bool "Lock Management Engine section" + default n + help + The Intel Management Engine supports preventing write accesses + from the host to the Management Engine section in the firmware + descriptor. If the ME section is locked, it can only be overwritten + with an external SPI flash programmer. You will want this if you + want to increase security of your ROM image once you are sure + that the ME firmware is no longer going to change. + + If unsure, say N. + endif diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc index eca3d9e2af..7fd6ca8a25 100644 --- a/src/southbridge/intel/bd82x6x/Makefile.inc +++ b/src/southbridge/intel/bd82x6x/Makefile.inc @@ -60,5 +60,14 @@ bd82x6x_add_me: $(obj)/coreboot.pre $(IFDTOOL) -i ME:3rdparty/mainboard/$(MAINBOARDDIR)/me.bin \ $(obj)/coreboot.pre mv $(obj)/coreboot.pre.new $(obj)/coreboot.pre +ifeq ($(CONFIG_LOCK_MANAGEMENT_ENGINE),y) + printf " IFDTOOL Locking Management Engine\n" + $(objutil)/ifdtool/ifdtool -l $(obj)/coreboot.pre + mv $(obj)/coreboot.pre.new $(obj)/coreboot.pre +else + printf " IFDTOOL Unlocking Management Engine\n" + $(objutil)/ifdtool/ifdtool -u $(obj)/coreboot.pre + mv $(obj)/coreboot.pre.new $(obj)/coreboot.pre +endif PHONY += bd82x6x_add_me |