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1#!/bin/sh
2######################################################################
3# __________ __ ___.
4# Open \______ \ ____ ____ | | _\_ |__ _______ ___
5# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
6# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
7# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
8# \/ \/ \/ \/ \/
9#
10# * Samsung YP-R0 Rockbox as an application loader *
11# Lorenzo Miori (C) 2011
12######################################################################
13
14# This is expected to be sourced by the shell, which is then
15# expected to run $MAINFILE
16
17# Check for menu button being pressed. Return immediately to launch the OF
18var=$(dd if=/dev/r0Btn bs=4 count=1)
19# Here a workaround to detect the byte
20var2=$(echo -e -n "\x07")
21
22if [[ "$var" = "$var2" ]]
23then
24 return
25fi
26
27
28# Blank-Unblank video to get rid of Samsung BootLogo, but turn off backlight before to hide these things :)
29echo -n "0" > /sys/devices/platform/afe.0/bli
30echo -n "1" > /sys/class/graphics/fb0/blank
31echo -n "0" >> /sys/class/graphics/fb0/blank
32
33amixer sset 'Soft Mute' 0
34amixer sset 'Master' 85%
35
36# We set-up various settings for the cpu governor: default are
37# Every 1,5 s the kernel evaluates if it's the case to down/up clocking the cpu
38echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
39echo "1" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load
40echo "150000" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
41echo "95" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
42
43# bind these two to the root so that they're writable
44mount --bind /mnt/media0/.rockbox /.rockbox
45mount --bind /mnt/media0/Playlists /Playlists
46
47MAINFILE="/mnt/media0/.rockbox/rockbox"