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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> |
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| README.am335x-network | ||
| README.omap3 | ||
| README.spl-secure-boot | ||
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.