coreboot-kgpe-d16/Documentation/vendorcode/eltan/security.md
Frans Hendriks 3cae9afbf9 vendorcode/eltan: Add vendor code for measured and verified boot
This patch contains the general files for the vendorcode/eltan that has
been uploaded recently:
- Add eltan directory to vendorcode.
- Add documentation about the support in the vendorcode directories.
- Add the Makefile.inc and Kconfig for the vendorcode/eltan and
  vendorcode/eltan/security.

BUG=N/A
TEST=Created verified binary and verify logging on Portwell PQ-M107

Change-Id: Ic1d5a21d40b6a31886777e8e9fe7b28c860f1a80
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30218
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2019-06-04 10:41:53 +00:00

1.3 KiB

Eltan Security

Security

This code enables measured boot and verified boot support. Verified boot is available in coreboot, but based on ChromeOS. This vendorcode uses a small encryption library and leave much more space in flash for the payload.

Hashing Library

The library suppports SHA-1, SHA-256 and SHA-512. The required routines of 3rdparty/vboot/firmware/2lib are used.

Measured boot

measured boot support will use TPM2 device if available. The items specified in mb_log_list[] will be measured.

Verified boot

verified boot support will use TPM2 device if available. The items specified in the next table will be verified:

  • bootblock_verify_list[]
  • verify_item_t romstage_verify_list[]
  • ram_stage_additional_list[]
  • ramstage_verify_list[]
  • payload_verify_list[]
  • oprom_verify_list[]

Enabling support

  • Measured boot can be enabled using CONFIG_MBOOT
  • Create mb_log_list table with list of item to measure
  • Create tables bootblock_verify_list[], verify_item_t romstage_verify_list[], ram_stage_additional_list[], ramstage_verify_list[], payload_verify_list[], oprom_verify_list[]
  • Verified boot can be enabled using CONFIG_VERIFIED_BOOT
  • Added Kconfig values for verbose console output

Debugging

You can enable verbose console output in menuconfig.