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Moved coldfire code in system.c and system.h into target tree.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11399 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2006-10-30 14:17:14 +00:00
parent 522da3a677
commit f29cae0d26
5 changed files with 437 additions and 390 deletions
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131
firmware/target/coldfire/system-target.h Normal file
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@ -0,0 +1,131 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* 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 or_l(mask, address) \
asm \
("or.l %0,(%1)" \
: \
: /* %0 */ "d"(mask), \
/* %1 */ "a"(address))
#define and_l(mask, address) \
asm \
("and.l %0,(%1)" \
: \
: /* %0 */ "d"(mask), \
/* %1 */ "a"(address))
#define eor_l(mask, address) \
asm \
("eor.l %0,(%1)" \
: \
: /* %0 */ "d"(mask), \
/* %1 */ "a"(address))
#define EMAC_ROUND 0x10
#define EMAC_FRACTIONAL 0x20
#define EMAC_SATURATE 0x80
static inline void coldfire_set_macsr(unsigned long flags)
{
asm volatile ("move.l %0, %%macsr" : : "i,r" (flags));
}
static inline unsigned long coldfire_get_macsr(void)
{
unsigned long m;
asm volatile ("move.l %%macsr, %0" : "=r" (m));
return m;
}
#define HIGHEST_IRQ_LEVEL (7<<8)
static inline int set_irq_level(int level)
{
int oldlevel;
/* Read the old level and set the new one */
asm volatile ("move.w %%sr,%0\n"
"or.l #0x2000,%1\n"
"move.w %1,%%sr\n" : "=d" (oldlevel), "+d" (level) : );
return oldlevel;
}
static inline unsigned short swap16(unsigned short value)
/*
result[15..8] = value[ 7..0];
result[ 7..0] = value[15..8];
*/
{
return (value >> 8) | (value << 8);
}
static inline unsigned long SWAW32(unsigned long value)
/*
result[31..16] = value[15.. 0];
result[15.. 0] = value[31..16];
*/
{
asm ("swap %%0" : "+r"(value));
return value;
}
static inline unsigned long swap32(unsigned long value)
/*
result[31..24] = value[ 7.. 0];
result[23..16] = value[15.. 8];
result[15.. 8] = value[23..16];
result[ 7.. 0] = value[31..24];
*/
{
unsigned long mask = 0x00FF00FF;
asm ( /* val = ABCD */
"and.l %[val],%[mask] \n" /* mask = .B.D */
"eor.l %[mask],%[val] \n" /* val = A.C. */
"lsl.l #8,%[mask] \n" /* mask = B.D. */
"lsr.l #8,%[val] \n" /* val = .A.C */
"or.l %[mask],%[val] \n" /* val = BADC */
"swap %[val] \n" /* val = DCBA */
: /* outputs */
[val] "+d"(value),
[mask]"+d"(mask)
);
return value;
}
static inline void invalidate_icache(void)
{
asm volatile ("move.l #0x01000000,%d0\n"
"movec.l %d0,%cacr\n"
"move.l #0x80000000,%d0\n"
"movec.l %d0,%cacr");
}
/* 11.2896 MHz */
#define CPUFREQ_DEFAULT_MULT 1
#define CPUFREQ_DEFAULT (CPUFREQ_DEFAULT_MULT * CPU_FREQ)
/* 45.1584 MHz */
#define CPUFREQ_NORMAL_MULT 4
#define CPUFREQ_NORMAL (CPUFREQ_NORMAL_MULT * CPU_FREQ)
/* 124.1856 MHz */
#define CPUFREQ_MAX_MULT 11
#define CPUFREQ_MAX (CPUFREQ_MAX_MULT * CPU_FREQ)
#endif /* SYSTEM_TARGET_H */