README: Remove the obsolete 'usb-boot' script

It was designed to be used with the legacy u-boot-sunxi
bootloader and has many assumptions, which are specific to
it (a special FEL configuration, hardcoded addresses, etc.)

The mainline U-Boot can now be booted over USB with the
"fel uboot u-boot-sunxi-with-spl.bin" command. And this
makes the old 'usb-boot' script obsolete.

The presence of the 'usb-boot' script in the repository may
confuse the users, so we are removing it now. The users of the
old u-boot-sunxi bootloader still can always get this script
from one of the old sunxi-tools tags.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>

README

@@ -24,11 +24,8 @@ fex2bin:
 fel:
 	script interface for talking to the FEL USB handler built in to
 	th CPU. You activate FEL mode by pushing the usboot/recovery
-	button at poweron.
-
-usb-boot:
-	Simple wrapper to automate USB booting in FEL mode
-	See http://linux-sunxi.org/FEL/USBBoot for details
+	button at poweron. See http://linux-sunxi.org/FEL/USBBoot for
+	a detailed usage guide.
 
 fel-gpio:
 	Simple wrapper around fel-pio and fel to allos GPIO manipulations

usb-boot

@@ -1,91 +0,0 @@
-#!/bin/sh -e
-
-# Copyright (C) 2013  Henrik Nordstrom <henrik@henriknordstrom.net>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-
-top=`dirname $0`
-if [ $# -lt 2 ]; then
-	echo "Usage: $0 u-boot-spl.bin u-boot.bin [boot.scr] [kernel script.bin [initramfs]]"
-	exit 1
-fi
-board=$1; shift || (echo "ERROR: u-boot-spl.bin must be specified"; exit 1;)
-uboot=$1; shift || (echo "ERROR: u-boot.bin must be specified"; exit 1;)
-bootscr=$top/felboot/ramboot.scr
-if [ ! -f $bootscr ]; then
-	bootscr=$top/bin/ramboot.scr
-fi
-case "$1" in
-*.scr)	bootscr="$1"; shift
-	;;
-esac
-if [ $# -ge 1 ]; then
-	kernel=$1; shift || true
-fi
-if [ $# -ge 1 ]; then
-	scriptbin=$1; shift || true
-fi
-if [ $# -ge 1 ]; then
-	initramfs=$1; shift || true
-fi
-fel() {
-	echo fel "$@"
-	$top/fel $@
-}
-case $board in
-*/*)	felboot=$board
-	;;
-*)
-	felboot=$top/felboot/fel-boot-${board}.bin
-	if [ ! -f $felboot ]; then
-		felboot=$top/bin/fel-boot-${board}.bin
-	fi
-	;;
-esac
-if [ ! -f $felboot ]; then
-	echo "ERROR: Can't find SPL FEL binary ${board}"
-	exit 1
-fi
-if [ `wc -c $felboot | cut '-d ' -f1` -gt 15616 ]; then
-	echo "ERROR: SPL FEL binary too large. Must be the FEL version of SPL"
-	exit 1
-fi
-if [ ! -f $bootscr ]; then
-	echo "ERROR: Can't find boot script '${bootscr}'"
-	exit 1
-fi
-fel write 0x2000 $felboot
-fel exe 0x2000
-sleep 1 # Wait for DRAM initialization to complete
-if [ -n "$uboot" ]; then
-	fel write 0x4a000000 $uboot
-fi
-if [ -n "$bootscr" ]; then
-	fel write 0x41000000 $bootscr
-fi
-if [ -n "$kernel" ]; then
- if [ -n "$scriptbin" ]; then
-  fel write 0x43000000 $scriptbin
- fi
- fel write 0x44000000 $kernel
- if [ -n "$initramfs" ]; then
-  fel write 0x4c000000 $initramfs
- fi
-fi
-fel exe 0x4a000000