This script runs when the target is booted in recovery mode. It
reinitializes the TPM and sets the predefined NVRAM spaces to the
default values.
The precence of the /etc/init/trunksd.init file is used to derermine
if the target is runnig TPM 1.x or 2.x.
The major difference between TPM 1.2 and TPM 2.0 modes is that the TPM
2.0 supporting routines do not yet allow to define NVRAM spaces. This
capability will be added later.
BRANCH=none
BUG=chrome-os-partner:59361, chrome-os-partner:55210
TEST=verified that running chromeos-TPM-recovery on a device booted in
recovery mode properly reinitializes TPM on both reef (TPM2.0)
and kevin (TPM1.2). The previously failing on reef autotest
firmware_UpdateFirmwareDataKeyVersion is now passing.
Change-Id: I58e4ceeb1ba27544b7ebfb045d2d2fc5477ecf43
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/407796
Reviewed-by: Andrey Pronin <apronin@chromium.org>
This new recovery reason will instruct the calling firmware in
vboot_select_and_load_kernel to reboot the device (under the assumption
that training of memory has already been performed by the firmware). On
seeing the return code VBERROR_REBOOT_REQUESTED, calling firmware should
perform a reboot.
BUG=chrome-os-partner:59352
BRANCH=None
TEST=make -j runtests successful
Change-Id: I110a735e612665cb2378bd71ca01a111edaf58e3
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/407656
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Previously, vb2_unpack_key() actually unpacked a key buffer. Callers
that had a vb2_packed_key had to typecast it back to a uint8_t buffer to
unpack it. Rename vb2_unpack_key() to vb2_unpack_key_buffer(), and make
vb2_unpack_key() unpack a vb2_packed_key.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge;
emerge-samus and boot it
Change-Id: I9ee38a819c59cc58a72ead78cf5ddf3d0f301ae7
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400906
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Originally, vboot1 code used VbExMalloc() and VbExFree() since it needed
to talk to EFI firmware that didn't have standard malloc() and free().
Now, coreboot and depthcharge implement them as wrappers around those
standard calls. vboot2 code already calls them directly, so let vboot1
code do that too.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I49ad0e32e38d278dc3589bfaf494bcf0e4b0a4bd
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400905
Now that the vboot1 cryptolib code is gone, nothing uses stateful_util.
Remove it and its unit tests.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I75b6014be00c5266545db10e87c1d9485fd1444b
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400904
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
At this point, all that's left are a few constants in the cryptolib
header files, and they're only used by host-side code. So move them to
a host-side header file and get rid of cryptolib.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I2235f0e84e13fef313afe54e749b73744b157884
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400903
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
The old vboot1 cryptolib hard-coded many of its padding arrays in a
padding.c file. Use the equivalent vboot2 apis instead.
This change is almost exclusively on the host and test side; the only
firmware impact is on a single line of debug output.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: If689ffd92f0255847bea2424950da4547b2c0df3
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400902
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
The low-level verification functions' *_WORKBUF_BYTES constants assume
the work buffer is already aligned to VB2_WORKBUF_ALIGN. But malloc()
may return a less-aligned pointer, in which case vb2_workbuf_init()
aligns it (and loses a bit of space in the process). This can cause an
error "vb2_rsa_verify_digest: ERROR - vboot2 work buffer too small!".
High-level functions should be using the *_WORKBUF_RECOMMENDED_SIZE
constants for allocation, which have enough padding to compensate for
alignment problems.
BUG=chrome-os-partner:59306
BRANCH=none
TEST=make runtests; boot a recovery image on reef
Change-Id: I1055fa56072b3fe1cd07c5c090293635c42c77a2
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/406526
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This change makes run_test_scripts.sh dump stderr to the terminal
so that the failed test can be debugged. This is necessary to
analyze a failing test on build servers.
BUG=none
BRANCH=none
TEST=sudo FEATURES=test emerge vboot_reference && FEATURES=test
USE=minimal emerge-samus vboot_reference && make runtests
Change-Id: Id9ae0fb174cfe382ec30a1175f54c0891543c46e
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/403428
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Another in a continued stream of refactoring. This change removes more
of the vb1 rsa library code and associated tests, in favor of their vb2
equivalents. This change touches only host-side code and its tests, not
firmware.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I1973bc2f03c60da62232e30bab0fa5fe791b6b34
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400901
The usage string wasn't appending a newline to the end which caused
weird output when shown. Add a proper usage() helper and extend the
output a bit to be more human friendly.
BUG=chromium:660209
TEST=`pad_digest_utility` is nice
BRANCH=None
Change-Id: I01c3c5372a4202bc6f5a9b2c5fe0e2a59c3ca5cf
Reviewed-on: https://chromium-review.googlesource.com/404768
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
No need to have two implementations of this now.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I18bac928eb09971c37f3e1d7cbfd2009999b1f31
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400899
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
No need to have two implementations of this now.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: Id3348eae80c5d85451981a44729164ff59f88648
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/399121
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Originally, we didn't trust the firmware to provide these functions from
a standard library. Now, with coreboot, we do.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge
Change-Id: I4e624c40085f2b665275a38624340b2f6aabcf11
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/399120
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
find: A p is added betwen device name and partition whenever the last
character of a device is a number, as written in disk_name() in kernel
block/partition-generic.c file.
debug_vboot: Add regex for nvme device.
BUG=chromium:655192
BRANCH=none
TEST=Check that when a machine boots from NVMe, chromeos-setgoodkernel
set "successful" field properly.
Run " dev_debug_vboot --cleanup", check the NVMe device kernel
partitions are verified.
Change-Id: I6a9342c95500fa582f51f06e48c1ff90684c2a27
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/398338
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This change makes futility show command dump more information
of the BDB header.
BUG=chromium:649554
BRANCH=none
TEST=make runtests
$ futility show --type bdb ~/tmp/rotor/bin/coreboot.rom
Change-Id: I8a10ed03b673879ab80f777b34863e670d37cd8c
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/399061
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This change makes futility show command dump information of the
signatures found in a BDB.
BUG=chromium:649554
BRANCH=none
TEST=make runtests
$ futility show --type bdb ~/tmp/rotor/bin/coreboot.rom
Change-Id: I168dcd5adf237ec9989f43e3834577257e9a10ff
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/399060
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This change makes futility show command dump information of the keys
found in a BDB.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. run futility show tests/futility/data/bdb.bin
Change-Id: I82bb3956b043adf1febe42941618608865525da2
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/399059
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This change makes futility show command to dump data header information
in a BDB. # of hashes is used to verify 'futility bdb --add' can add a
hash in the unit test.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. run futility show tests/futility/data/bdb.bin
BDB Header:
Struct Version: 0x1:0x0
BDB key digest: c7895611c24efb2249d97376189eeee07def6bcd8ab162a3850d279354f08ddf
size: 1176
Data Header:
Struct Version: 0x1:0x0
# of Hashes: 2
Hash Entry Size:56
Signed Size: 272
Description:
Hash #0:
Offset: 0x2
Size: 35
Partition: 3
Type: 1
Load Address: 0x4
Digest: 72bcf33f448465f035bd58e4b61501db925e67c89feb4a70cb909d8b425861f4
Hash #1:
Offset: 0x2
Size: 35
Partition: 3
Type: 1
Load Address: 0x4
Digest: 72bcf33f448465f035bd58e4b61501db925e67c89feb4a70cb909d8b425861f4
Change-Id: I88934b761236f36a5d607c96f6f2543a62e50b68
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/392949
This patch makes futility show command print out hash information.
BUG=chromium:649555
BRANCH=none
TEST=make runtests. Ran futility show tests/futility/data/bdb.bin.
Change-Id: I4d0e933b7b9dca6548aa8488d9ca85b8692a5d49
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/392948
vboot_reference originally used 2-space indentation, rather than
kernel-style tabs. This makes it painful to maintain given that newer
source files are kernel-style.
Re-indent the files that need it, and reflow comments.
No functionality changes.
BUG=none
BRANCH=none
TEST=make runtests
Change-Id: I7dabed41f69434b1988a52600c0cb1eac8c8d7e6
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/396488
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
For a device with bootcache support (such as parrot), the kernel config
contains bootcache args (reference: device_map_args in
build_kernel_image.sh). When removing rootfs verification, bootcache
should be disabled, equivalently we should remove bootcache args.
BRANCH=vboot_reference
BUG=chromium:590606
TEST=tested on parrot device with ./build_image --board=parrot test.
After installing the image on device,
(1) run sudo /usr/share/vboot/bin/make_dev_ssd.sh
--remove_rootfs_verification
(2) reboot
The bootloop bug is fixed.
Change-Id: I56ca5f2d98e00e1117611959a67ce72338ec7377
Reviewed-on: https://chromium-review.googlesource.com/395386
Commit-Ready: Qiang Xu <warx@chromium.org>
Tested-by: Qiang Xu <warx@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Qiang Xu <warx@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
bdb_get_hash_by_index returns a hash entry from a BDB using an index.
bdb_get_hash is also renamed to bdb_get_hash_by_type. bdb_get_hash
is deprecated. Callers are expected to call bdb_get_hash_by_index(buf, 0)
instead.
BUG=none
BRANCH=none
TEST=make runtests
Change-Id: Id99926123c0ac9094574eb057c63f79eceda2867
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/392947
Reviewed-by: Randall Spangler <rspangler@chromium.org>
When --ignore_key_digest is specified, futility bdb --verify command
returns success even if the key digest didn't match. Warning message
will be printed to remind the digest wasn't checked.
BUG=chromium:649554
BRANCH=none
TEST=Tested as follows:
$ build/futility/futility bdb --verify tests/futility/data/bdb.bin \
--ignore_key_digest
BDB is valid. Key digest doesn't match but ignored.
$ echo $?
0
Change-Id: I996b0a4f7bbbcf546e2d958f28c5ee8fb251fb99
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/392946
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Currently, test macros print out 'desc' regardless 'comment' is specified
or not. This patch makes TEST_EQ print 'desc' only if 'comment' is not
supplied.
BUG=none
BRANCH=none
TEST=make runtests
Change-Id: I9cc3c9a9561534352ae0315dfea983f2c212b909
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/388859
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This patch makes futility show command support boot block descriptor (BDB)
of the common boot flow.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. Ran futility show bdb.bin.
Change-Id: I5f199a32ab1c268351e822e37ed39e41ae19bc7a
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/388631
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This patch adds 'verify' sub-command to futility bdb. It verifies a BDB.
If a key digest is given, it also checks the validity of the embedded
BDB key.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. Ran futility bdb --create, --add, --resign, --verify.
Change-Id: Ie19dc0f067c3c6ce65b2b6184bad14b49b188f6d
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/387906
Reviewed-by: Randall Spangler <rspangler@chromium.org>
'resign' sub-command signs a BDB using keys provided. It can resign only
the data key, the hashes, or both. Required keys vary depending on what
part of BDB is invalid and on what public key is specified in the command
line. It then detects what key is needed based on
the verification result and fails if the required key is not provided.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. Ran futility bdb --create, --add, --resign, --verify
Change-Id: I589a5972f1d7e5066eb56e1c5efb4ee7089d41cd
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/387118
Reviewed-by: Randall Spangler <rspangler@chromium.org>
futility bdb --add appends a new hash entry to the given BDB.
The resulting BDB does not have a valid signature and is expected to
be resigned by 'resign' sub-command after all hashes are added.
BUG=chromium:649554
BRANCH=none
TEST=make runtest. Ran futility bdb --add, then --resign, then --verify
(to be implemented)
Change-Id: Icdf185f8ac268a23bb3954f5e78df6f80e749e18
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/387117
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This patch adds BDB_ERROR_DATA_CHECK_SIG and BD_ERROR_DATA_SIGNED_SIZE
to distiniguish data signature validation errors.
'futility bdb --resign' uses these to decide whether to resign is needed
or not.
BUG=chromium:649554
BRANCH=none
TEST=make runtests
Change-Id: I19137801ece2424ae575092c51d02664c8b73ba3
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/386795
Reviewed-by: Randall Spangler <rspangler@chromium.org>
bdb command manipulates BDBs. '--create' sub-command creates a BDB.
Other sub-commands will follow in the successive patches.
BUG=chromium:649554
BRANCH=none
TEST=make runtests. Ran futility bdb --create using test keys and verify
it with bdb --verify (to be implemented).
Change-Id: Ib0a6165ac93efc7478b9d999d3c837d47cf81ddd
Reviewed-on: https://chromium-review.googlesource.com/386794
Commit-Ready: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Verified boot has "TPM anti-rollback check" that prohibits booting
firmware if the device has been installed with a firmware that has
higher signing version. This is causing problems when people are trying
to use make_dev_firmware script on MP devices (which usually has a
higher version than DEV keyset, which is always 1).
Previously, make_dev_firmware won't alert about this so developers will
first see boot failure, figure out what happened, and then either uprev
the devkeys folder manually (which we don't provide scripts on DUT so
it's hard), or reset the device by using factory reset shim.
Since make_dev_firmware already knows all information, it should check
and increase version number automatically.
This change has implemented checking and increasing 'firmware version'.
The 'data key version' is also checked, but increasing that is more
complicated and we probably don't have all required tools yet on DUT,
so it is only checked.
Also added one flag --[no]mod_hwid so MP device users can keep their HWID
easier, when they need to switch back and forth between DEV / real MP
firmware.
BRANCH=none
BUG=none
TEST=Grab a firmware from daisy mp-v4.bin and do
./make_dev_firmware.sh -f bios.bin -t out.bin --nomod_hwid
Change-Id: If81ef60e6debdcd1c6d899b5a2c03bdacb4fd4f7
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/390871
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
bdb_extend prints out secrets derived from the given BDS based on
the given BDB.
BUG=chromium:649555
BRANCH=none
TEST=make runtests. Ran bdb_extend -s bds.bin -b bdb.bin (with/without -m)
Change-Id: I8d9f73468992dad4cb93a422c0eae0977be9a16f
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/385539
This patch adds code which dervies secrets from BDS. It's supposed to be
done by SP-RO, hence the code is mostly useful for testing (or emulation).
vba_extend_secrets_ro takes a function pointer to a hash extend
function. It'll be used to try different sha256 extend algorithms.
BUG=chromium:649555
BRANCH=none
TEST=make runtests
Change-Id: I8fef6b851fb84686d8bcdd948b36160016687c51
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/384354
Reviewed-by: Randall Spangler <rspangler@chromium.org>
If key digest matching is not required (i.e. verify-bdb-key efuse
flag is not set), bdb_verify skips digest matching. This change makes
bdb_verify accept null pointer for the key digest parameter.
BUG=chromium:649555
BRANCH=none
TEST=make runtests
Change-Id: I14e5bd02526684b7b7bca1e1701cf04056df83ea
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/385538
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Defining these symbols weakly causes the output executable to hit
segmentation fault because ld chooses *UND* symbols over the definition
when they appear in *.a archive:
$ objdump -t build/libvboot_utilbdb.a
bdb.o:
0000000000000000 w *UND* 0000000000000000 bdb_rsa4096_verify
...
rsa.o
000000000000061f w F .text 0000000000000111 bdb_rsa4096_verify
...
This happens regardless whether the symbol is referenced or not;
or whether the object defining the symbol appears earlier than the
reference or not.
BUG=none
BRANCH=none
TEST=make runtests
Change-Id: Ib53a9010f2afdc2ba59369fb145aef4381db30d3
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/387905
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Currently, test macros print out 'desc' regardless 'comment' is specified
or not. This patch makes 'desc' printed out only if 'comment' is not
supplied.
BUG=none
BRANCH=none
TEST=make runtests
Change-Id: I146d681b0d3cb7d41c7f80b71c59418a0250fc17
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/385159
Commit-Ready: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
The version of unsquashfs that is shipped with Trusty does not correctly
file capabilities, even though the target filesystem supports them. This
change forces the Android signer script to prefer the pre-built binaries
for mksquashfs/unsquashfs in order for the file capabilities to be
preserved.
BUG=b:31630024
BRANCH=none
TEST=Called sign_android_image.sh locally, saw capabilities preserved
across repeated invocations.
CQ-DEPEND=CL:*289356
Change-Id: I13e8782edb699eb4ce8bcf82885bd474f4351430
Reviewed-on: https://chromium-review.googlesource.com/387867
Commit-Ready: Luis Hector Chavez <lhchavez@google.com>
Tested-by: Luis Hector Chavez <lhchavez@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
An earlier commit had added this:
ifeq (${TPM2_MODE},)
# TODO(apronin): tests for TPM2 case?
TEST_NAMES += \
tests/tlcl_tests \
tests/rollback_index2_tests
endif
but left this:
.PHONY: runmisctests
runmisctests: test_setup
${RUNTEST} ${BUILD_RUN}/tests/rollback_index2_tests
[...]
${RUNTEST} ${BUILD_RUN}/tests/tlcl_tests
So if TPM2_MODE is not null, those two test targets won't be
built. This CL puts those two into the same guard, so that
they won't be attempted if they're not built.
BUG=chrome-os-partner:57727
BRANCH=all
TEST=manual
Before, this fails:
FEATURES=test emerge-reef vboot_reference
Now, it passes.
Change-Id: Ic00f9f867d3d9c719d797907f00fda8bc5044504
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/388711
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
