# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1434751836 -7200
# Node ID 3cfceb3d8a19742559024cbfb0c8209612d0cc6c
# Parent  7eff01784edc1127c7a5c760e1d6270b0403baf1
Updated the documentation, noting the switch to xbboot and MMC boot support.

diff -r 7eff01784edc -r 3cfceb3d8a19 README.txt
--- a/README.txt	Mon Jun 15 11:54:15 2015 +0200
+++ b/README.txt	Sat Jun 20 00:10:36 2015 +0200
@@ -8,19 +8,45 @@
 routines for "bare metal" software usage in order to illustrate the
 initialisation requirements and to make it possible to deploy other software.
 
+An attempt has been made to also generate payloads for the jz4730-based
+MiniPC/Mipsbook/Minibook device. This device does not appear to support USB
+boot mode, and thus any payloads will need to be deployed by other means, such
+as through the use of SD/MMC media.
+
+Deployment over USB
+-------------------
+
 The payloads can be deployed on the Ben NanoNote using the USB boot mode as
 described on the Qi-Hardware site:
 
 http://en.qi-hardware.com/wiki/USB_BOOT_mode
 
-A suitable command can be issued on a USB host machine as follows (given
+The provided script can be issued on a USB host machine as follows (given
 sufficient privileges):
 
-usbboot -c 'boot' -1 stage1/stage1.bin -2 stage2/stage2.bin
+./boot_usb
+
+This employs the xbboot program which is available in the xburst-tools
+package:
+
+http://en.qi-hardware.com/wiki/Xburst-tools
+
+The different MiniPC products do not appear to support USB boot.
+
+Deployment using microSD/SD/MMC Media
+-------------------------------------
 
-An attempt has been made to also generate payloads for the jz4730-based
-MiniPC/Mipsbook/Minibook device. This device does not appear to support USB
-boot mode, and thus any payloads will need to be deployed by other means.
+The stage 2 payload can be written to a suitable media card as a uImage file
+which can then be loaded and invoked by a U-Boot bootloader already installed
+on the Ben NanoNote or MiniPC product.
+
+Typically, U-Boot on the Ben NanoNote will look for such a file located at
+/boot/uImage within the first partition of a microSD card. On the MiniPC,
+U-Boot will look for a file located at /uImage (in other words, a file called
+uImage in the top-level directory) within the first partition of an SD card.
+
+Since U-Boot should have initialised the RAM and clocks, the stage 1 payload
+is superfluous, and only the stage 2 payload is needed in this situation.
 
 Related U-Boot Resources
 ------------------------