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authorSumit Garg <sumit.garg@nxp.com>2016-07-14 16:27:53 (GMT)
committerYork Sun <york.sun@nxp.com>2016-07-21 18:11:29 (GMT)
commitebfc066e6f755da373d503608249f77ac298fb5e (patch)
treeaeeded9ca849c8d96a9d6f9e353a6c39ef1b4928 /doc/SPL
parentaa36c84edfcfd8c7d0348511e7b0fbb43514cd35 (diff)
downloadu-boot-ebfc066e6f755da373d503608249f77ac298fb5e.tar.xz
doc: SPL: Add README for secure boot support
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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+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.