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diff --git a/firmware/target/arm/imx31/gigabeat-s/powermgmt-target.h b/firmware/target/arm/imx31/gigabeat-s/powermgmt-target.h
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+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Michael Sevakis
+ *
+ * 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 POWERMGMT_TARGET_H
+#define POWERMGMT_TARGET_H
+
+/* Can't just run this code willy-nilly. Do not allow charger engagement
+ * without carefully verifying compatibility.
+ *
+ * Things to check:
+ *   1) Charge path configuration for the PMIC.
+ *   2) Correct thermistor reading
+ *   3) Accurate voltage readings
+ *   4) Accurate current sense for the charge path as the sense resistor may
+ *      deviate from the 0.1 ohms assumed by the charge path regulator.
+ */
+#ifdef TOSHIBA_GIGABEAT_S
+/*
+ * Gigabeat S qualifications:
+ * 1) Setup for dual-supply mode with separate inputs and providing USB
+ *    charging capability through external components.
+ * 2) Curve obtained experimentally - extreme deviation from "optimized"
+ *    characteristics.
+ * 3) Verified at battery terminals - no deviation from datasheet formula.
+ * 4) 0.316 ohms  <=?? - verified by comparitive current readings on device
+ *    with ammeter readings and measurement of on-board components.
+ */
+#ifndef BOOTLOADER
+#define IMX31_ALLOW_CHARGING
+#endif
+
+#else
+#warning This iMX31 target requires validation of charging algorithm - charging disabled
+#endif
+
+#define BATT_VTRICKLE_CHARGE        2900 /* Must charge slowly */
+#define BATT_VSLOW_CHARGE           3500 /* Lower-current charge mode below
+                                          * this level */
+#define BATT_VAUTO_RECHARGE         4100 /* When to begin another cycle */
+#define BATT_USB_VAUTO_RECHARGE     4000 /* When to cycle with USB only */
+#define BATT_USB_VSTOP              4140 /* When to "stop" when USB only */
+#define BATT_TOO_LOW                2400 /* No battery? Short? Can't
+                                             read below 2400mV. */
+#define CHARGER_TOTAL_TIMER          300 /* minutes */
+
+/* .316 ohms is closest standard value as measured in 1% tolerance - adjust
+ * relative to .100 ohm which is what the PMIC is "tuned" for. */
+#define ILEVEL_ADJUST_IN(I)         (100*(I) / 316)
+#define ILEVEL_ADJUST_OUT(I)        (316*(I) / 100)
+
+/* Relative draw to battery capacity - adjusted for sense resistor */
+#define BATTERY_ICHARGE_COMPLETE    (505*9/100) /* 9% of nominal max output */
+/* All charging modes use 4.200V for regulator */
+#define BATTERY_VCHARGING           MC13783_VCHRG_4_200V
+/* Slow charging - MAIN - Still below 3.5V (avoid excessive reg. dissipation) */
+/* #define BATTERY_ISLOW */
+/* Fast charging - MAIN */
+#define BATTERY_IFAST               MC13783_ICHRG_1596MA /* 505mA */
+/* Trickle charging low battery - MAIN (~10% Imax) */
+#define BATTERY_ITRICKLE            MC13783_ICHRG_177MA  /*  56mA */
+/* Slow charging - USB - Still below 3.5V (avoid excessive reg. dissipation) */
+/* #define BATTERY_ISLOW_USB */
+/* Fast charging - USB */
+#define BATTERY_IFAST_USB           MC13783_ICHRG_1152MA /* 365mA */
+/* Trickle charging low battery - USB (Ibat = Icccv - Idevice) */
+#define BATTERY_ITRICKLE_USB        MC13783_ICHRG_532MA  /* 168mA */
+/* Maintain charge - USB 500mA */
+#define BATTERY_IFLOAT_USB          MC13783_ICHRG_1152MA /* 365mA */
+#define BATTERY_VFLOAT_USB          MC13783_VCHRG_4_150V
+/* Maintain charge - USB 100mA */
+#define BATTERY_IMAINTAIN_USB       MC13783_ICHRG_266MA  /*  84mA */
+#define BATTERY_VMAINTAIN_USB       MC13783_VCHRG_4_150V
+
+/* Battery filter lengths in samples */
+#define BATT_AVE_SAMPLES            32
+#define ICHARGER_AVE_SAMPLES        32
+
+/* Provide filtered charge current */
+int battery_charge_current(void);
+
+#ifndef SIMULATOR
+/* Indicate various functions that require implementation at the target level.
+ * This is because the battery could be low or the battery switch is off but
+ * with the main charger attached which implies safe power for anything. The
+ * true battery reading is always reported for voltage readings and not the
+ * value at the application supply. */
+#define TARGET_QUERY_FORCE_SHUTDOWN
+
+/* For this the application supply is read out if the charger is attached or
+ * the battery read if not (completely hardware selected at BP). */
+#define TARGET_BATTERY_LEVEL_SAFE
+
+/* The state should be adjusted to CHARGING or DISCHARGING */
+#define TARGET_POWERMGMT_FILTER_CHARGE_STATE
+#endif /* SIMULATOR */
+
+#endif /* POWERMGMT_TARGET_H */