From ab9795d27d30280243941147e4cf65ce206243f1 Mon Sep 17 00:00:00 2001 From: "S.J.R. van Schaik" Date: Fri, 4 Aug 2017 16:28:51 +0200 Subject: [PATCH] user-doc: add introduction for flashing the ROTS --- user-doc/user-doc.tex | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/user-doc/user-doc.tex b/user-doc/user-doc.tex index e277f34..3228fd7 100644 --- a/user-doc/user-doc.tex +++ b/user-doc/user-doc.tex @@ -173,6 +173,10 @@ For the initramfs, we will need static binaries of \emph{busybox}, \emph{kexec-t \section{Flashing ROTS} +To write the ROTS image to the SPI NOR flash, we can either use an external programmer or boot the device in FEL mode and use the \emph{sunxi-fel} tool. +To write the images, it is strongly recommended to use the \emph{sunxi-fel} tool as it is much faster than using an external programmer. +However, to configure the write-protection an external programmer must be used, as there are few tools that support configuring the write-protection of the SPI NOR flash. + \subsection{Using an External Programmer} In order to be able to program the SPI NOR flash with an external programmer, we will need an external programmer such as the BusPirate v3.6a or the BusPirate v4.0 and SOIC clip.