115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Linus Nielsen Feltzing
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*
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* iPod driver based on code from the ipodlinux project - http://ipodlinux.org
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* Adapted for Rockbox in January 2006
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* Original file: podzilla/usb.c
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* Copyright (C) 2005 Adam Johnston
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#include "kernel.h"
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#include "thread.h"
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#include "system.h"
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#include "debug.h"
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#include "ata.h"
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#include "fat.h"
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#include "disk.h"
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#include "panic.h"
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#include "lcd.h"
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#include "adc.h"
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#include "usb.h"
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#include "button.h"
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#include "sprintf.h"
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#include "string.h"
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#include "hwcompat.h"
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void usb_init_device(void)
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{
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int r0;
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outl(inl(0x70000084) | 0x200, 0x70000084);
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outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
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outl(inl(0x6000600C) | 0x400000, 0x6000600C);
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outl(inl(0x60006004) | 0x400000, 0x60006004); /* reset usb start */
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outl(inl(0x60006004) & ~0x400000, 0x60006004); /* reset usb end */
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outl(inl(0x70000020) | 0x80000000, 0x70000020);
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while ((inl(0x70000028) & 0x80) == 0);
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outl(inl(0xc5000184) | 0x100, 0xc5000184);
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while ((inl(0xc5000184) & 0x100) != 0);
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outl(inl(0xc50001A4) | 0x5F000000, 0xc50001A4);
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if ((inl(0xc50001A4) & 0x100) == 0) {
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outl(inl(0xc50001A8) & ~0x3, 0xc50001A8);
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outl(inl(0xc50001A8) | 0x2, 0xc50001A8);
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outl(inl(0x70000028) | 0x4000, 0x70000028);
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outl(inl(0x70000028) | 0x2, 0x70000028);
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} else {
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outl(inl(0xc50001A8) | 0x3, 0xc50001A8);
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outl(inl(0x70000028) &~0x4000, 0x70000028);
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outl(inl(0x70000028) | 0x2, 0x70000028);
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}
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outl(inl(0xc5000140) | 0x2, 0xc5000140);
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while((inl(0xc5000140) & 0x2) != 0);
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r0 = inl(0xc5000184);
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/* Note from IPL source (referring to next 5 lines of code:
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THIS NEEDS TO BE CHANGED ONCE THERE IS KERNEL USB */
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outl(inl(0x70000020) | 0x80000000, 0x70000020);
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outl(inl(0x6000600C) | 0x400000, 0x6000600C);
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while ((inl(0x70000028) & 0x80) == 0);
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outl(inl(0x70000028) | 0x2, 0x70000028);
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udelay(0x186A0);
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}
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void usb_enable(bool on)
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{
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/* For the ipod, we can only do one thing with USB mode - reboot
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into Apple's flash-based disk-mode. This does not return. */
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if (on)
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{
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/* The following code is copied from ipodlinux */
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#if defined(IPOD_COLOR) || defined(IPOD_3G) || \
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defined(IPOD_4G) || defined(IPOD_MINI)
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unsigned char* storage_ptr = (unsigned char *)0x40017F00;
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#elif defined(IPOD_NANO) || defined(IPOD_VIDEO) || defined(IPOD_MINI2G)
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unsigned char* storage_ptr = (unsigned char *)0x4001FF00;
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#endif
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memcpy(storage_ptr, "diskmode\0\0hotstuff\0\0\1", 21);
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DEV_RS |= 4; /* Reboot */
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}
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}
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bool usb_detect(void)
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{
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bool current_status;
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/* The following check is in the ipodlinux source, with the
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comment "USB2D_IDENT is bad" if USB2D_IDENT != 0x22FA05 */
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if (USB2D_IDENT != 0x22FA05) {
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return false;
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}
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current_status = (USB_STATUS & 0x800)?true:false;
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return current_status;
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}
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