mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
ebfc066e6f
Adds information regarding SPL handling validation process of main u-boot image on power/mpc85xx and arm/layerscape platforms. Signed-off-by: Sumit Garg <sumit.garg@nxp.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: York Sun <york.sun@nxp.com>
19 lines
721 B
Plaintext
19 lines
721 B
Plaintext
Overview of SPL verified boot on powerpc/mpc85xx & arm/layerscape platforms
|
|
===========================================================================
|
|
|
|
Introduction
|
|
------------
|
|
|
|
This document provides an overview of how SPL verified boot works on powerpc/
|
|
mpc85xx & arm/layerscape platforms.
|
|
|
|
Methodology
|
|
-----------
|
|
|
|
The SPL image is responsible for loading the next stage boot loader, which is
|
|
the main u-boot image. For secure boot process on these platforms ROM verifies
|
|
SPL image, so to continue chain of trust SPL image verifies U-boot image using
|
|
spl_validate_uboot(). This function uses QorIQ Trust Architecture header
|
|
(appended to U-boot image) to validate the U-boot binary just before passing
|
|
control to it.
|