security/vboot: Decouple measured boot from verified boot

Currently, those who want to use measured boot implemented within
VBOOT should enable verified boot first, along with sections such
as GBB and RW slots defined with manually written fmd files, even
if they do not actually want to verify anything.

As discussed in CB:34977, measured boot should be decoupled from
verified boot and make them two fully independent options. Crypto
routines necessary for measurement could be reused, and TPM and CRTM
init should be done somewhere other than vboot_logic_executed() if
verified boot is not enabled.

In this revision, only TCPA log is initialized during bootblock.
Digests are not measured into tpm immediately before TPM gets set up,
but recorded into TCPA log only, and measured into tpm right after TPM
is up by "replaying" recorded digests.

This change allows those who do not want to use the verified boot
scheme implemented by VBOOT as well as its requirement of a more
complex partition scheme designed for chromeos to make use of the
measured boot functionality implemented within VBOOT library to
measure the boot process.

TODO: Measure MRC Cache somewhere, as MRC Cache has never resided in
CBFS any more, so it cannot be covered by tspi_measure_cbfs_hook().

Change-Id: I1fb376b4a8b98baffaee4d574937797bba1f8aee
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
---
M src/arch/x86/car.ld
M src/drivers/pc80/tpm/Makefile.inc
M src/include/memlayout.h
M src/lib/bootblock.c
M src/lib/cbfs.c
M src/mainboard/siemens/mc_apl1/variants/mc_apl2/Kconfig
M src/mainboard/siemens/mc_apl1/variants/mc_apl4/Kconfig
M src/mainboard/siemens/mc_apl1/variants/mc_apl5/Kconfig
M src/mainboard/siemens/mc_apl1/variants/mc_apl6/Kconfig
M src/security/tpm/Kconfig
M src/security/tpm/Makefile.inc
M src/security/tpm/tspi.h
A src/security/tpm/tspi/crtm.c
R src/security/tpm/tspi/crtm.h
M src/security/tpm/tspi/log.c
M src/security/tpm/tspi/tspi.c
M src/security/vboot/Kconfig
M src/security/vboot/Makefile.inc
M src/security/vboot/symbols.h
D src/security/vboot/vboot_crtm.c
M src/security/vboot/vboot_logic.c
M src/soc/cavium/cn81xx/include/soc/memlayout.ld
M src/soc/mediatek/mt8173/include/soc/memlayout.ld
M src/soc/mediatek/mt8183/include/soc/memlayout.ld
M src/soc/nvidia/tegra124/include/soc/memlayout.ld
M src/soc/nvidia/tegra210/include/soc/memlayout.ld
M src/soc/samsung/exynos5250/include/soc/memlayout.ld
27 files changed, 327 insertions(+), 298 deletions(-)