rockbox/firmware/target/arm/tcc77x/system-target.h
Vitja Makarov 36e8fc0872 tcc77x: add tcc77x_cscfg_bw() helper for external memory bus width setup
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22729 a1c6a512-1295-4272-9138-f99709370657
2009-09-18 05:48:37 +00:00

59 lines
2 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Dave Chapman
*
* 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
#include "system-arm.h"
#define CPUFREQ_DEFAULT 98784000
#define CPUFREQ_NORMAL 98784000
#define CPUFREQ_MAX 120000000
#define inl(a) (*(volatile unsigned long *) (a))
#define outl(a,b) (*(volatile unsigned long *) (b) = (a))
#define inb(a) (*(volatile unsigned char *) (a))
#define outb(a,b) (*(volatile unsigned char *) (b) = (a))
#define inw(a) (*(volatile unsigned short *) (a))
#define outw(a,b) (*(volatile unsigned short *) (b) = (a))
/* TC32 is configured to 1MHz in clock_init() */
#define USEC_TIMER TC32MCNT
static inline void udelay(unsigned usecs)
{
unsigned stop = USEC_TIMER + usecs;
while (TIME_BEFORE(USEC_TIMER, stop));
}
#define TCC77X_CSCFG_BW8 0
#define TCC77X_CSCFG_BW16 1
/* Due to hardware bug or "feature" this hack is needed to set bus width bits */
static inline
unsigned long tcc77x_cscfg_bw(int bw) {
if (bw == TCC77X_CSCFG_BW8)
return (((MCFG >> 11) & 3) ^ 3) << 28;
else
return (((MCFG >> 11) & 3) ^ 2) << 28;
}
#endif /* SYSTEM_TARGET_H */