18 files changed, 1495 insertions, 0 deletions

diff --git a/firmware/target/hosted/ypr0/adc-target.h b/firmware/target/hosted/ypr0/adc-target.h
new file mode 100644
index 0000000000..bdbc4cfabd
--- /dev/null
+++ b/firmware/target/hosted/ypr0/adc-target.h
@@ -0,0 +1,25 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: adc-target.h 29516 2011-03-05 15:31:52Z thomasjfox $
+ *
+ * Copyright (C) 2011 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __ADC_TARGET_H__
+#define __ADC_TARGET_H__
+
+#endif /* __ADC_TARGET_H__ */
diff --git a/firmware/target/hosted/ypr0/ascodec-target.h b/firmware/target/hosted/ypr0/ascodec-target.h
new file mode 100644
index 0000000000..f4ecf20a1b
--- /dev/null
+++ b/firmware/target/hosted/ypr0/ascodec-target.h
@@ -0,0 +1,92 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: ascodec-target.h 26116 2010-05-17 20:53:25Z funman $
+ *
+ * Module wrapper for AS3543 audio codec, using /dev/afe (afe.ko) of Samsung YP-R0
+ *
+ * Copyright (c) 2011 Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef _ASCODEC_TARGET_H
+#define _ASCODEC_TARGET_H
+
+#include "as3514.h"
+#include "kernel.h"
+#include "adc.h"
+#include "ascodec.h"
+
+/* ioctl parameter struct */
+
+struct codec_req_struct {
+/* This works for every kind of afe.ko module requests */
+            unsigned char reg; /* Main register address */
+            unsigned char subreg; /* Set this only if you are reading/writing a PMU register*/
+            unsigned char value; /* To be read if reading a register; to be set if writing to a register */
+};
+
+int ascodec_init(void);
+void ascodec_close(void);
+int ascodec_write(unsigned int reg, unsigned int value);
+int ascodec_read(unsigned int reg);
+void ascodec_write_pmu(unsigned int index, unsigned int subreg, unsigned int value);
+int ascodec_read_pmu(unsigned int index, unsigned int subreg);
+void ascodec_set(unsigned int reg, unsigned int bits);
+void ascodec_clear(unsigned int reg, unsigned int bits);
+void ascodec_write_masked(unsigned int reg, unsigned int bits, unsigned int mask);
+int ascodec_readbytes(unsigned int index, unsigned int len, unsigned char *data);
+unsigned short adc_read(int channel);
+void ascodec_lock(void);
+void ascodec_unlock(void);
+
+static inline bool ascodec_chg_status(void)
+{
+    return ascodec_read(AS3514_IRQ_ENRD0) & CHG_STATUS;
+}
+
+static inline bool ascodec_endofch(void)
+{
+    return ascodec_read(AS3514_IRQ_ENRD0) & CHG_ENDOFCH;
+}
+
+static inline void ascodec_monitor_endofch(void)
+{
+    ascodec_write(AS3514_IRQ_ENRD0, IRQ_ENDOFCH);
+}
+
+static inline void ascodec_wait_adc_finished(void)
+{
+    /*
+     * FIXME: not implemented
+     *
+     * If irqs are not available on the target platform,
+     * this should be most likely implemented by polling
+     * AS3514_IRQ_ENRD2 in the same way powermgmt-ascodec.c
+     * is polling IRQ_ENDOFCH.
+     */
+}
+
+static inline void ascodec_write_charger(int value)
+{
+    ascodec_write_pmu(AS3543_CHARGER, 1, value);
+}
+
+static inline int ascodec_read_charger(void)
+{
+    return ascodec_read_pmu(AS3543_CHARGER, 1);
+}
+
+#endif /* !_ASCODEC_TARGET_H */
diff --git a/firmware/target/hosted/ypr0/ascodec-ypr0.c b/firmware/target/hosted/ypr0/ascodec-ypr0.c
new file mode 100644
index 0000000000..a4e92e6f6b
--- /dev/null
+++ b/firmware/target/hosted/ypr0/ascodec-ypr0.c
@@ -0,0 +1,206 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: ascodec-target.h 26116 2010-05-17 20:53:25Z funman $
+ *
+ * Module wrapper for AS3543 audio codec, using /dev/afe (afe.ko) of Samsung YP-R0
+ *
+ * Copyright (c) 2011 Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "fcntl.h"
+#include "unistd.h"
+#include "stdio.h"
+#include "string.h"
+#include "sys/ioctl.h"
+#include "stdlib.h"
+
+#include "ascodec-target.h"
+
+int afe_dev = -1;
+
+/* Write to a normal register */
+#define IOCTL_REG_WRITE 0x40034101
+/* Write to a PMU register */
+#define IOCTL_SUBREG_WRITE 0x40034103
+/* Read from a normal register */
+#define IOCTL_REG_READ 0x80034102
+/* Read from a PMU register */
+#define IOCTL_SUBREG_READ 0x80034103
+
+static struct mutex as_mtx;
+
+int ascodec_init(void) {
+
+    afe_dev = open("/dev/afe", O_RDWR);
+
+    mutex_init(&as_mtx);
+
+    return afe_dev;
+
+}
+
+void ascodec_close(void) {
+
+    if (afe_dev >= 0) {
+        close(afe_dev);
+    }
+
+}
+
+/* Read functions returns -1 if fail, otherwise the register's value if success */
+/* Write functions return >= 0 if success, otherwise -1 if fail */
+
+int ascodec_write(unsigned int reg, unsigned int value)
+{
+    struct codec_req_struct y;
+    struct codec_req_struct *p;
+    p = &y;
+    p->reg = reg;
+    p->value = value;
+    return ioctl(afe_dev, IOCTL_REG_WRITE, p);
+}
+
+int ascodec_read(unsigned int reg)
+{
+    int retval = -1;
+    struct codec_req_struct y;
+    struct codec_req_struct *p;
+    p = &y;
+    p->reg = reg;
+    retval = ioctl(afe_dev, IOCTL_REG_READ, p);
+    if (retval >= 0)
+        return p->value;
+    else
+        return retval;
+}
+
+void ascodec_write_pmu(unsigned int index, unsigned int subreg,
+                                     unsigned int value)
+{
+    struct codec_req_struct y;
+    struct codec_req_struct *p;
+    p = &y;
+    p->reg = index;
+    p->subreg = subreg;
+    p->value = value;
+    ioctl(afe_dev, IOCTL_SUBREG_WRITE, p);
+}
+
+int ascodec_read_pmu(unsigned int index, unsigned int subreg)
+{
+    int retval = -1;
+    struct codec_req_struct y;
+    struct codec_req_struct *p;
+    p = &y;
+    p->reg = index;
+    p->subreg = subreg;
+    retval = ioctl(afe_dev, IOCTL_SUBREG_READ, p);
+    if (retval >= 0)
+        return p->value;
+    else
+        return retval;
+}
+
+/* Helpers to set/clear bits */
+void ascodec_set(unsigned int reg, unsigned int bits)
+{
+    ascodec_write(reg, ascodec_read(reg) | bits);
+}
+
+void ascodec_clear(unsigned int reg, unsigned int bits)
+{
+    ascodec_write(reg, ascodec_read(reg) & ~bits);
+}
+
+void ascodec_write_masked(unsigned int reg, unsigned int bits,
+                                unsigned int mask)
+{
+    ascodec_write(reg, (ascodec_read(reg) & ~mask) | (bits & mask));
+}
+
+/*FIXME: doesn't work */
+int ascodec_readbytes(unsigned int index, unsigned int len, unsigned char *data)
+{
+    unsigned int i;
+
+    for (i=index; i<len; i++) {
+        data[i] = ascodec_read(i);
+        printf("Register %i: value=%i\n",index,data[i]);
+    }
+
+    printf("TOTAL: %i\n", i);
+
+    return i;
+}
+
+/*
+ * NOTE:
+ * After the conversion to interrupts, ascodec_(lock|unlock) are only used by
+ * adc-as3514.c to protect against other threads corrupting the result by using
+ * the ADC at the same time.
+ * 
+ * Concurrent ascodec_(async_)?(read|write) calls are instead protected
+ * by the R0's Kernel I2C driver for ascodec (mutexed), so it's automatically safe
+ */
+
+void ascodec_lock(void)
+{
+    mutex_lock(&as_mtx);
+}
+
+void ascodec_unlock(void)
+{
+    mutex_unlock(&as_mtx);
+}
+
+/* Read 10-bit channel data */
+unsigned short adc_read(int channel)
+{
+    unsigned short data = 0;
+
+    if ((unsigned)channel >= NUM_ADC_CHANNELS)
+        return 0;
+
+    ascodec_lock();
+
+    /* Select channel */
+    ascodec_write(AS3514_ADC_0, (channel << 4));
+    unsigned char buf[2];
+
+        /*
+         * The AS3514 ADC will trigger an interrupt when the conversion
+         * is finished, if the corresponding enable bit in IRQ_ENRD2
+         * is set.
+         * Previously the code did not wait and this apparently did
+         * not pose any problems, but this should be more correct.
+         * Without the wait the data read back may be completely or
+         * partially (first one of the two bytes) stale.
+         */
+    /*FIXME: not implemented*/
+    ascodec_wait_adc_finished();
+
+        /* Read data */
+    ascodec_readbytes(AS3514_ADC_0, 2, buf);
+    data = (((buf[0] & 0x3) << 8) | buf[1]);
+
+    ascodec_unlock();
+    return data;
+}
+
+void adc_init(void)
+{
+}
diff --git a/firmware/target/hosted/ypr0/backlight-target.h b/firmware/target/hosted/ypr0/backlight-target.h
new file mode 100644
index 0000000000..561e159e8c
--- /dev/null
+++ b/firmware/target/hosted/ypr0/backlight-target.h
@@ -0,0 +1,29 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: backlight-target.h 19322 2008-12-04 04:16:53Z jethead71 $
+ *
+ * Copyright (C) 2011 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef BACKLIGHT_TARGET_H
+#define BACKLIGHT_TARGET_H
+
+bool _backlight_init(void);
+void _backlight_on(void);
+void _backlight_off(void);
+void _backlight_set_brightness(int brightness);
+
+#endif /* BACKLIGHT_TARGET_H */
diff --git a/firmware/target/hosted/ypr0/backlight-ypr0.c b/firmware/target/hosted/ypr0/backlight-ypr0.c
new file mode 100644
index 0000000000..930b56be2e
--- /dev/null
+++ b/firmware/target/hosted/ypr0/backlight-ypr0.c
@@ -0,0 +1,89 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: backlight-gigabeat-s.c 25800 2010-05-04 10:07:53Z jethead71 $
+ *
+ * Copyright (C) 2011 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "system.h"
+#include "backlight.h"
+#include "backlight-target.h"
+#include "lcd.h"
+#include "as3514.h"
+#include "ascodec-target.h"
+#include <fcntl.h>
+#include "unistd.h"
+
+static bool backlight_on_status = true; /* Is on or off? */
+
+/*TODO: see if LCD sleep could be implemented in a better way -> ie using a rockbox feature */
+/* Turn off LCD power supply */
+static void _backlight_lcd_sleep(void)
+{
+    int fp = open("/sys/class/graphics/fb0/blank", O_RDWR);
+    write(fp, "1", 1);
+    close(fp);
+}
+/* Turn on LCD screen */
+static void _backlight_lcd_power(void)
+{
+    int fp = open("/sys/class/graphics/fb0/blank", O_RDWR);
+    write(fp, "0", 1);
+    close(fp);
+}
+
+bool _backlight_init(void)
+{
+    /* We have nothing to do */
+    return true;
+}
+
+void _backlight_on(void)
+{
+    if (!backlight_on_status)
+    {
+        /* Turn on lcd power before backlight */
+        _backlight_lcd_power();
+        /* Original app sets this to 0xb1 when backlight is on... */
+        ascodec_write_pmu(AS3543_BACKLIGHT, 0x1, 0xb1);
+    }
+
+    backlight_on_status = true;
+
+}
+
+void _backlight_off(void)
+{
+    if (backlight_on_status) {
+        /* Disabling the DCDC15 completely, keeps brightness register value */
+        ascodec_write_pmu(AS3543_BACKLIGHT, 0x1, 0x00);
+        /* Turn off lcd power then */
+        _backlight_lcd_sleep();
+    }
+
+    backlight_on_status = false;
+}
+
+void _backlight_set_brightness(int brightness)
+{
+    /* Just another check... */
+    if (brightness > MAX_BRIGHTNESS_SETTING)
+        brightness = MAX_BRIGHTNESS_SETTING;
+    if (brightness < MIN_BRIGHTNESS_SETTING)
+        brightness = MIN_BRIGHTNESS_SETTING;
+    ascodec_write_pmu(AS3543_BACKLIGHT, 0x3, brightness << 3 & 0xf8);
+}
diff --git a/firmware/target/hosted/ypr0/button-target.h b/firmware/target/hosted/ypr0/button-target.h
new file mode 100644
index 0000000000..5d65d97607
--- /dev/null
+++ b/firmware/target/hosted/ypr0/button-target.h
@@ -0,0 +1,53 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: button-target.h 29248 2011-02-08 20:05:25Z thomasjfox $
+ *
+ * Copyright (C) 2011 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef _BUTTON_TARGET_H_
+#define _BUTTON_TARGET_H_
+
+#include <stdbool.h>
+#include "config.h"
+
+void button_init_device(void);
+void button_close_device(void);
+int button_read_device(void);
+
+/* Logical buttons key codes */
+#define BUTTON_UP           0x00000001
+#define BUTTON_DOWN         0x00000002
+#define BUTTON_LEFT         0x00000004
+#define BUTTON_RIGHT        0x00000008
+#define BUTTON_USER         0x00000010
+#define BUTTON_MENU         0x00000020
+#define BUTTON_BACK         0x00000040
+#define BUTTON_POWER        0x00000080
+#define BUTTON_SELECT       0x00000100
+
+#define BUTTON_MAIN         0x1FF /* all buttons */
+
+/* No remote */
+#define BUTTON_REMOTE 0
+
+/* Software power-off */
+#define POWEROFF_BUTTON BUTTON_POWER
+/* About 3 seconds */
+#define POWEROFF_COUNT 10
+
+#endif /* _BUTTON_TARGET_H_ */
diff --git a/firmware/target/hosted/ypr0/button-ypr0.c b/firmware/target/hosted/ypr0/button-ypr0.c
new file mode 100644
index 0000000000..4298410161
--- /dev/null
+++ b/firmware/target/hosted/ypr0/button-ypr0.c
@@ -0,0 +1,103 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: button-sdl.c 30482 2011-09-08 14:53:28Z kugel $
+ *
+ * Copyright (C) 2011 Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>         /* EXIT_SUCCESS */
+#include "config.h"
+#include "button.h"
+#include "kernel.h"
+#include "system.h"
+#include "button-target.h"
+
+/* R0 physical key codes */
+enum ypr0_buttons {
+    R0BTN_NONE = BUTTON_NONE,
+    R0BTN_POWER = 1,
+    R0BTN_UP,
+    R0BTN_DOWN,
+    R0BTN_RIGHT,
+    R0BTN_LEFT,
+    R0BTN_CENTRAL,
+    R0BTN_MENU,
+    R0BTN_BACK,
+    R0BTN_3DOTS = 11,
+};
+
+
+static int r0_btn_fd = 0;
+/* Samsung keypad driver doesn't allow multiple key combinations :( */
+static enum ypr0_buttons r0_read_key(void)
+{
+    unsigned char keys;
+
+    if (r0_btn_fd < 0)
+        return 0;
+
+    if (read(r0_btn_fd, &keys, 1))
+        return keys;
+
+    return 0;
+}
+
+/* Conversion from physical keypress code to logic key code */
+static int key_to_button(enum ypr0_buttons keyboard_button)
+{
+    switch (keyboard_button)
+    {
+        default:            return BUTTON_NONE;
+        case R0BTN_POWER:   return BUTTON_POWER;
+        case R0BTN_UP:      return BUTTON_UP;
+        case R0BTN_DOWN:    return BUTTON_DOWN;
+        case R0BTN_RIGHT:   return BUTTON_RIGHT;
+        case R0BTN_LEFT:    return BUTTON_LEFT;
+        case R0BTN_CENTRAL: return BUTTON_SELECT;
+        case R0BTN_MENU:    return BUTTON_MENU;
+        case R0BTN_BACK:    return BUTTON_BACK;
+        case R0BTN_3DOTS:   return BUTTON_USER;
+    }
+}
+
+int button_read_device(void)
+{
+    return key_to_button(r0_read_key());
+}
+
+
+/* Open the keypad device: it is offered by r0Btn.ko module */
+void button_init_device(void)
+{
+    r0_btn_fd = open("/dev/r0Btn", O_RDONLY);
+    if (r0_btn_fd < 0)
+        printf("/dev/r0Btn open error!");
+}
+
+#ifdef BUTTON_DRIVER_CLOSE
+/* I'm not sure it's called at shutdown...give a check! */
+void button_close_device(void)
+{
+    if (r0_btn_fd >= 0) {
+        close(r0_btn_fd);
+        printf("/dev/r0Btn closed!");
+    }
+}
+#endif /* BUTTON_DRIVER_CLOSE */
diff --git a/firmware/target/hosted/ypr0/dir-target.h b/firmware/target/hosted/ypr0/dir-target.h
new file mode 100644
index 0000000000..48859526df
--- /dev/null
+++ b/firmware/target/hosted/ypr0/dir-target.h
@@ -0,0 +1,56 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __DIR_TARGET_H__
+#define __DIR_TARGET_H__
+
+#include <dirent.h>
+/* including unistd.h is too noisy */
+extern int rmdir(const char* name);
+
+
+#define dirent_uncached dirent
+#define DIR_UNCACHED DIR
+#define opendir_uncached _opendir
+#define readdir_uncached _readdir
+#define closedir_uncached _closedir
+#define mkdir_uncached _mkdir
+#define rmdir_uncached rmdir
+
+#define dirent_ypr0 dirent
+#define DIR_ypr0 DIR
+#define opendir_ypr0 _opendir
+#define readdir_ypr0 _readdir
+#define closedir_ypr0 _closedir
+#define mkdir_ypr0 _mkdir
+#define rmdir_ypr0 rmdir
+
+extern DIR* _opendir(const char* name);
+extern int  _mkdir(const char* name);
+extern int  _closedir(DIR* dir);
+extern struct dirent *_readdir(DIR* dir);
+extern void fat_size(unsigned long *size, unsigned long *free);
+
+#define DIRFUNCTIONS_DEFINED
+#define DIRENT_DEFINED
+#define DIR_DEFINED
+
+#endif /* __DIR_TARGET_H__ */
diff --git a/firmware/target/hosted/ypr0/fs-ypr0.c b/firmware/target/hosted/ypr0/fs-ypr0.c
new file mode 100644
index 0000000000..7f49a5f91a
--- /dev/null
+++ b/firmware/target/hosted/ypr0/fs-ypr0.c
@@ -0,0 +1,141 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include <sys/stat.h> /* stat() */
+#include <stdio.h>  /* snprintf */
+#include <string.h> /* size_t */
+#include <dirent.h>
+#include <time.h>   /* localtime() */
+#include "system-target.h"
+#include "dir-target.h"
+#include "file.h"
+#include "dir.h"
+#include "rbpaths.h"
+
+
+long filesize(int fd)
+{
+    struct stat buf;
+
+    if (!fstat(fd, &buf))
+        return buf.st_size;
+    else
+        return -1;
+}
+
+/* do we really need this in the app? */
+void fat_size(unsigned long* size, unsigned long* free)
+{
+    *size = *free = 0;
+}
+
+#undef opendir
+#undef closedir
+#undef mkdir
+#undef readdir
+
+/* need to wrap around DIR* because we need to save the parent's
+ * directory path in order to determine dirinfo */
+struct __dir {
+    DIR  *dir;
+    char *path;
+};
+
+DIR* _opendir(const char *name)
+{
+    char *buf = malloc(sizeof(struct __dir) + strlen(name)+1);
+    if (!buf)
+        return NULL;
+
+    struct __dir *this = (struct __dir*)buf;
+
+    this->path = buf+sizeof(struct __dir);
+    /* definitely fits due to strlen() */
+    strcpy(this->path, name);
+
+    this->dir = opendir(name);
+
+    if (!this->dir)
+    {
+        free(buf);
+        return NULL;
+    }
+    return (DIR*)this;
+}
+
+int _mkdir(const char *name)
+{
+    return mkdir(name, 0777);
+}
+
+int _closedir(DIR *dir)
+{
+    struct __dir *this = (struct __dir*)dir;
+    int ret = closedir(this->dir);
+    free(this);
+    return ret;
+}
+
+struct dirent* _readdir(DIR* dir)
+{
+    struct __dir *d = (struct __dir*)dir;
+    return readdir(d->dir);
+}
+
+struct dirinfo dir_get_info(DIR* _parent, struct dirent *dir)
+{
+    struct __dir *parent = (struct __dir*)_parent;
+    struct stat s;
+    struct tm *tm = NULL;
+    struct dirinfo ret;
+    char path[MAX_PATH];
+
+    snprintf(path, sizeof(path), "%s/%s", parent->path, dir->d_name);
+    memset(&ret, 0, sizeof(ret));
+
+    if (!stat(path, &s))
+    {
+        if (S_ISDIR(s.st_mode))
+        {
+            ret.attribute = ATTR_DIRECTORY;
+        }
+        ret.size = s.st_size;
+        tm = localtime(&(s.st_mtime));
+    }
+
+    if (!lstat(path, &s) && S_ISLNK(s.st_mode))
+    {
+        ret.attribute |= ATTR_LINK;
+    }
+
+    if (tm)
+    {
+        ret.wrtdate = ((tm->tm_year - 80) << 9) |
+                            ((tm->tm_mon + 1) << 5) |
+                            tm->tm_mday;
+        ret.wrttime = (tm->tm_hour << 11) |
+                            (tm->tm_min << 5) |
+                            (tm->tm_sec >> 1);
+    }
+
+    return ret;
+}
diff --git a/firmware/target/hosted/ypr0/i2c-target.h b/firmware/target/hosted/ypr0/i2c-target.h
new file mode 100644
index 0000000000..3b046bba96
--- /dev/null
+++ b/firmware/target/hosted/ypr0/i2c-target.h
@@ -0,0 +1,25 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: i2c-target.h 29516 2011-03-05 15:31:52Z thomasjfox $
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __I2C_TARGET_H__
+#define __I2C_TARGET_H__
+
+#endif /* __I2C_TARGET_H__ */
diff --git a/firmware/target/hosted/ypr0/kernel-ypr0.c b/firmware/target/hosted/ypr0/kernel-ypr0.c
new file mode 100644
index 0000000000..bcf2cee583
--- /dev/null
+++ b/firmware/target/hosted/ypr0/kernel-ypr0.c
@@ -0,0 +1,163 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2010 Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+
+#include <time.h>
+#include <signal.h>
+#include <errno.h>
+#include <unistd.h>
+#include <pthread.h>
+#include "config.h"
+#include "system.h"
+#include "button.h"
+#include "audio.h"
+#include "panic.h"
+#include "timer.h"
+
+
+static pthread_cond_t wfi_cond = PTHREAD_COND_INITIALIZER;
+static pthread_mutex_t wfi_mtx = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * call tick tasks and wake the scheduler up */
+void timer_signal(union sigval arg)
+{
+    (void)arg;
+    call_tick_tasks();
+    interrupt();
+}
+
+/*
+ * wait on the sem which the signal handler posts to save cpu time (aka sleep)
+ *
+ * other mechanisms could use them as well */
+void wait_for_interrupt(void)
+{
+    pthread_cond_wait(&wfi_cond, &wfi_mtx);
+}
+
+/*
+ * Wakeup the kernel, if sleeping (shall not be called from a signal handler) */
+void interrupt(void)
+{
+    pthread_cond_signal(&wfi_cond);
+}
+
+
+/*
+ * setup a hrtimer to send a signal to our process every tick
+ */
+union sigval tick_arg = {
+    .sival_int = 0,
+};
+
+void tick_start(unsigned int interval_in_ms)
+{
+    int ret = 0;
+    timer_t timerid;
+    struct itimerspec ts;
+    sigevent_t sigev;
+
+    /* initializing in the declaration causes some weird warnings */
+    memset(&sigev, 0, sizeof(sigevent_t));
+    sigev.sigev_notify = SIGEV_THREAD,
+    sigev.sigev_notify_function = timer_signal;
+
+    ts.it_value.tv_sec = ts.it_interval.tv_sec = 0;
+    ts.it_value.tv_nsec = ts.it_interval.tv_nsec = interval_in_ms*1000*1000;
+
+    /* add the timer */
+    ret |= timer_create(CLOCK_REALTIME, &sigev, &timerid);
+    ret |= timer_settime(timerid, 0, &ts, NULL);
+
+    /* Grab the mutex already now and leave it to this thread. We don't
+     * care about race conditions when signaling the condition (because
+     * they are not critical), but a mutex is necessary due to the API */
+    pthread_mutex_lock(&wfi_mtx);
+
+    if (ret != 0)
+        panicf("%s(): %s\n", __func__, strerror(errno));
+}
+
+#define cycles_to_microseconds(cycles) \
+    ((int)((1000000*cycles)/TIMER_FREQ))
+
+
+static timer_t timer_tid;
+static int timer_prio = -1;
+void (*global_unreg_callback)(void);
+void (*global_timer_callback)(void);
+
+static void timer_cb(union sigval arg)
+{
+    (void)arg;
+    if (global_timer_callback)
+        global_timer_callback();
+}
+
+bool timer_register(int reg_prio, void (*unregister_callback)(void),
+                    long cycles, void (*timer_callback)(void))
+{
+    int ret = 0;
+    struct itimerspec ts;
+    sigevent_t sigev;
+    long in_us = cycles_to_microseconds(cycles);
+
+    if (reg_prio <= timer_prio || in_us <= 0)
+        return false;
+
+    if (timer_prio >= 0 && global_unreg_callback)
+        global_unreg_callback();
+
+    /* initializing in the declaration causes some weird warnings */
+    memset(&sigev, 0, sizeof(sigevent_t));
+    sigev.sigev_notify = SIGEV_THREAD,
+    sigev.sigev_notify_function = timer_cb;
+
+    ts.it_value.tv_sec = ts.it_interval.tv_sec = in_us / 1000000;
+    ts.it_value.tv_nsec = ts.it_interval.tv_nsec = (in_us%1000000)*1000;
+
+    /* add the timer */
+    ret |= timer_create(CLOCK_REALTIME, &sigev, &timer_tid);
+    ret |= timer_settime(timer_tid, 0, &ts, NULL);
+
+    global_timer_callback = timer_callback;
+    global_unreg_callback = unregister_callback;
+    timer_prio = reg_prio;
+
+    return ret == 0;
+}
+
+bool timer_set_period(long cycles)
+{
+    struct itimerspec ts;
+    long in_us = cycles_to_microseconds(cycles);
+    ts.it_value.tv_sec = ts.it_interval.tv_sec = in_us / 1000000;
+    ts.it_value.tv_nsec = ts.it_interval.tv_nsec = (in_us%1000000)*1000;
+
+    return timer_settime(timer_tid, 0, &ts, NULL) == 0;
+}
+
+void timer_unregister(void)
+{
+    timer_delete(timer_tid);
+    timer_prio = -1;
+}
+
diff --git a/firmware/target/hosted/ypr0/lc-ypr0.c b/firmware/target/hosted/ypr0/lc-ypr0.c
new file mode 100644
index 0000000000..434e901a56
--- /dev/null
+++ b/firmware/target/hosted/ypr0/lc-ypr0.c
@@ -0,0 +1,40 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <string.h> /* size_t */
+#include "load_code.h"
+
+/* the load_code wrappers simply wrap, nothing to do */
+void *lc_open(const char *filename, unsigned char *buf, size_t buf_size)
+{
+    return _lc_open(filename, buf, buf_size);
+}
+
+void *lc_get_header(void *handle)
+{
+    return _lc_get_header(handle);
+}
+
+void lc_close(void *handle)
+{
+    _lc_close(handle);
+}
+
diff --git a/firmware/target/hosted/ypr0/lcd-ypr0.c b/firmware/target/hosted/ypr0/lcd-ypr0.c
new file mode 100644
index 0000000000..f0565ae2d4
--- /dev/null
+++ b/firmware/target/hosted/ypr0/lcd-ypr0.c
@@ -0,0 +1,147 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: lcd-bitmap.c 29248 2011-02-08 20:05:25Z thomasjfox $
+ *
+ * Copyright (C) 2011 Lorenzo Miori, Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include "string.h"
+#include <linux/fb.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+#include "file.h"
+#include "debug.h"
+#include "system.h"
+#include "screendump.h"
+#include "lcd.h"
+
+/* eqivalent to fb + y*width + x */
+#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
+
+static int dev_fd = 0;
+static fb_data *dev_fb = 0;
+
+void lcd_update(void)
+{
+    /* update the entire display */
+    memcpy(dev_fb, lcd_framebuffer, sizeof(lcd_framebuffer));
+}
+
+/* Copy Rockbox frame buffer to the mmapped lcd device */
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    /* nothing to draw? */
+    if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) ||
+            (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0))
+        return;
+
+    /* do the necessary clipping */
+    if (x < 0)
+    {   /* clip left */
+        width += x;
+        x = 0;
+    }
+    if (y < 0)
+    {   /* clip top */
+        height += y;
+        y = 0;
+    }
+    if (x + width > LCD_WIDTH)
+        width = LCD_WIDTH - x; /* clip right */
+    if (y + height > LCD_HEIGHT)
+        height = LCD_HEIGHT - y; /* clip bottom */
+
+    fb_data* src  = LCDADDR(x, y);
+    fb_data* dst = dev_fb + y*LCD_WIDTH + x;
+
+    if (LCD_WIDTH == width)
+    {   /* optimized full-width update */
+        memcpy(dst, src, width * height * sizeof(fb_data));
+    }
+    else
+    {   /* row by row */
+        do
+        {
+            memcpy(dst, src, width * sizeof(fb_data));
+            src += LCD_WIDTH;
+            dst += LCD_WIDTH;
+        } while(--height > 0);
+    }
+}
+
+void lcd_shutdown(void)
+{
+    printf("FB closed.");
+    munmap(dev_fb, sizeof(lcd_framebuffer));
+    close(dev_fd);
+}
+
+void lcd_init_device(void)
+{
+    size_t screensize;
+    struct fb_var_screeninfo vinfo;
+    struct fb_fix_screeninfo finfo;
+
+    /* Open the framebuffer device */
+    dev_fd = open("/dev/fb0", O_RDWR);
+    if (dev_fd == -1) {
+        perror("Error: cannot open framebuffer device");
+        exit(1);
+    }
+    printf("The framebuffer device was opened successfully.\n");
+
+    /* Get the fixed properties */
+    if (ioctl(dev_fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
+        perror("Error reading fixed information");
+        exit(2);
+    }
+
+    /* Now we get the settable settings, and we set 16 bit bpp */
+    if (ioctl(dev_fd, FBIOGET_VSCREENINFO, &vinfo) == -1) {
+        perror("Error reading variable information");
+        exit(3);
+    }
+
+    vinfo.bits_per_pixel = 16;
+
+    if (ioctl(dev_fd, FBIOPUT_VSCREENINFO, &vinfo)) {
+            perror("fbset(ioctl)");
+            exit(4);
+    }
+
+    printf("%dx%d, %dbpp\n", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
+
+    /* Figure out the size of the screen in bytes */
+    screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
+    if (screensize != sizeof(lcd_framebuffer))
+    {
+        exit(4);
+        perror("Display and framebuffer mismatch!\n");
+    }
+
+    /* Map the device to memory */
+    dev_fb = mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, 0);
+    if ((int)dev_fb == -1) {
+        perror("Error: failed to map framebuffer device to memory");
+        exit(4);
+    }
+    printf("The framebuffer device was mapped to memory successfully.\n");
+}
diff --git a/firmware/target/hosted/ypr0/powermgmt-ypr0.c b/firmware/target/hosted/ypr0/powermgmt-ypr0.c
new file mode 100644
index 0000000000..5701e9f02f
--- /dev/null
+++ b/firmware/target/hosted/ypr0/powermgmt-ypr0.c
@@ -0,0 +1,133 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: powermgmt-sim.c 29543 2011-03-08 19:33:30Z thomasjfox $
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "system.h"
+#include <time.h>
+#include "kernel.h"
+#include "powermgmt.h"
+#include "ascodec-target.h"
+#include "stdio.h"
+
+#if 0 /*still unused*/
+/* The battery manufacturer's website shows discharge curves down to 3.0V,
+   so 'dangerous' and 'shutoff' levels of 3.4V and 3.3V should be safe.
+ */
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    3550
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    3450
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    { 3300, 3692, 3740, 3772, 3798, 3828, 3876, 3943, 4013, 4094, 4194 }
+};
+
+#if CONFIG_CHARGING
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+    3417, 3802, 3856, 3888, 3905, 3931, 3973, 4025, 4084, 4161, 4219
+};
+#endif /* CONFIG_CHARGING */
+#endif
+
+#define BATT_MINMVOLT   3450      /* minimum millivolts of battery */
+#define BATT_MAXMVOLT   4150      /* maximum millivolts of battery */
+#define BATT_MAXRUNTIME (10 * 60) /* maximum runtime with full battery in
+                                     minutes */
+
+extern void send_battery_level_event(void);
+extern int last_sent_battery_level;
+extern int battery_percent;
+
+static unsigned int battery_millivolts = BATT_MAXMVOLT;
+/* estimated remaining time in minutes */
+static int powermgmt_est_runningtime_min = BATT_MAXRUNTIME;
+
+static void battery_status_update(void)
+{
+    static time_t last_change = 0;
+    time_t now;
+
+    time(&now);
+
+    if (last_change < now) {
+        last_change = now;
+
+        battery_percent = 100 * (battery_millivolts - BATT_MINMVOLT) /
+                            (BATT_MAXMVOLT - BATT_MINMVOLT);
+
+        powermgmt_est_runningtime_min =
+            battery_percent * BATT_MAXRUNTIME / 100;
+    }
+
+    send_battery_level_event();
+}
+
+void battery_read_info(int *voltage, int *level)
+{
+    battery_status_update();
+
+    if (voltage)
+        *voltage = battery_millivolts;
+
+    if (level)
+        *level = battery_percent;
+}
+
+unsigned int battery_voltage(void)
+{
+    battery_status_update();
+    return battery_millivolts;
+}
+
+int battery_level(void)
+{
+    battery_status_update();
+    return battery_percent;
+}
+
+int battery_time(void)
+{
+    battery_status_update();
+    return powermgmt_est_runningtime_min;
+}
+
+bool battery_level_safe(void)
+{
+    return battery_level() >= 10;
+}
+
+void set_battery_capacity(int capacity)
+{
+  (void)capacity;
+}
+
+#if BATTERY_TYPES_COUNT > 1
+void set_battery_type(int type)
+{
+    (void)type;
+}
+#endif
diff --git a/firmware/target/hosted/ypr0/system-target.h b/firmware/target/hosted/ypr0/system-target.h
new file mode 100644
index 0000000000..07a3163ea9
--- /dev/null
+++ b/firmware/target/hosted/ypr0/system-target.h
@@ -0,0 +1,37 @@
+/***************************************************************************
+ *             __________               __   ___.                  
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___  
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /  
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <   
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \  
+ *                     \/            \/     \/    \/            \/ 
+ * $Id$
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef __SYSTEM_TARGET_H__
+#define __SYSTEM_TARGET_H__
+
+#define disable_irq()
+#define enable_irq()
+#define disable_irq_save() 0
+#define restore_irq(level) (void)level
+
+void wait_for_interrupt(void);
+void interrupt(void);
+
+static inline void commit_dcache(void) {}
+static inline void commit_discard_dcache(void) {}
+static inline void commit_discard_idcache(void) {}
+
+#define NEED_GENERIC_BYTESWAPS
+#endif /* __SYSTEM_TARGET_H__ */
diff --git a/firmware/target/hosted/ypr0/system-ypr0.c b/firmware/target/hosted/ypr0/system-ypr0.c
new file mode 100644
index 0000000000..3a2b30339f
--- /dev/null
+++ b/firmware/target/hosted/ypr0/system-ypr0.c
@@ -0,0 +1,106 @@
+/***************************************************************************
+ *             __________               __   ___.                  
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___  
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /  
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <   
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \  
+ *                     \/            \/     \/    \/            \/ 
+ * $Id: system-sdl.c 29925 2011-05-25 20:11:03Z thomasjfox $
+ *
+ * Copyright (C) 2006 by Daniel Everton <dan@iocaine.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+#include "system.h"
+#include "panic.h"
+#include "debug.h"
+
+#if defined(HAVE_SDL_AUDIO) || defined(HAVE_SDL_THREADS) || defined(HAVE_SDL)
+#include <SDL.h>
+#endif
+
+#include "ascodec-target.h"
+
+void sim_do_exit(void)
+{
+    exit(EXIT_SUCCESS);
+}
+
+void shutdown_hw(void)
+{
+    /* Something that we need to do before exit on our platform YPR0 */
+    ascodec_close();
+    sim_do_exit();
+}
+
+uintptr_t *stackbegin;
+uintptr_t *stackend;
+void system_init(void)
+{
+    int *s;
+    /* fake stack, OS manages size (and growth) */
+    stackbegin = stackend = (uintptr_t*)&s;
+
+#if defined(HAVE_SDL_AUDIO) || defined(HAVE_SDL_THREADS) || defined(HAVE_SDL)
+    SDL_Init(0); /* need this if using any SDL subsystem */
+#endif
+    /* Here begins our platform specific initilization for various things */
+    ascodec_init();
+}
+
+
+void system_reboot(void)
+{
+    sim_do_exit();
+}
+
+void system_exception_wait(void)
+{
+    system_reboot();
+}
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+#include <stdio.h>
+#include "file.h"
+/* This is the Linux Kernel CPU governor... */
+static void set_cpu_freq(int speed)
+{
+    char temp[10];
+    int cpu_dev;
+    cpu_dev = open("/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed", O_WRONLY);
+    if (cpu_dev < 0)
+        return;
+    write(cpu_dev, temp, sprintf(temp, "%d", speed) + 1);
+    close(cpu_dev);
+}
+
+void set_cpu_frequency(long frequency)
+{
+    switch (frequency)
+    {
+        case CPUFREQ_MAX:
+            set_cpu_freq(532000);
+            cpu_frequency = CPUFREQ_MAX;
+            break;
+        case CPUFREQ_NORMAL:
+            set_cpu_freq(400000);
+            cpu_frequency = CPUFREQ_NORMAL;
+            break;
+        default:
+            set_cpu_freq(200000);
+            cpu_frequency = CPUFREQ_DEFAULT;
+            break;
+    }
+}
+#endif
diff --git a/firmware/target/hosted/ypr0/usb-target.h b/firmware/target/hosted/ypr0/usb-target.h
new file mode 100644
index 0000000000..237d179775
--- /dev/null
+++ b/firmware/target/hosted/ypr0/usb-target.h
@@ -0,0 +1,25 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: usb-target.h 29516 2011-03-05 15:31:52Z thomasjfox $
+ *
+ * Copyright (C) 2010 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __USB_TARGET_H__
+#define __USB_TARGET_H__
+
+#endif /* __USB_TARGET_H__ */
diff --git a/firmware/target/hosted/ypr0/ypr0.make b/firmware/target/hosted/ypr0/ypr0.make
new file mode 100644
index 0000000000..c2114878db
--- /dev/null
+++ b/firmware/target/hosted/ypr0/ypr0.make
@@ -0,0 +1,25 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+
+INCLUDES += -I$(FIRMDIR)/include -I$(FIRMDIR)/export $(TARGET_INC) -I$(BUILDDIR) -I$(APPSDIR)
+
+SIMFLAGS += $(INCLUDES) $(DEFINES) -DHAVE_CONFIG_H $(GCCOPTS)
+
+.SECONDEXPANSION: # $$(OBJ) is not populated until after this
+
+
+$(BUILDDIR)/rockbox.elf : $$(OBJ) $$(FIRMLIB) $$(VOICESPEEXLIB) $$(SKINLIB)
+        $(call PRINTS,LD $(@F))$(CC) $(GCCOPTS) -Os -o $@ $(OBJ) \
+                -L$(BUILDDIR)/firmware -lfirmware \
+                -L$(BUILDDIR)/apps/codecs $(VOICESPEEXLIB:lib%.a=-l%) \
+                -L$(BUILDDIR)/lib -lskin_parser \
+                $(LDOPTS) $(GLOBAL_LDOPTS) -Wl,-Map,$(BUILDDIR)/rockbox.map
+
+$(BUILDDIR)/rockbox : $(BUILDDIR)/rockbox.elf
+        $(call PRINTS,OC $(@F))$(OC) -S -x $< $@