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Merge git://git.denx.de/u-boot-mpc85xx

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Tom Rini
2016-07-21 20:20:00 -04:00
parent 9f84da8de1 b24a4f6247
commit 89ca873e2d
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doc/SPL/README.spl-secure-boot Normal file
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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.