[linux-2.6-block.git] / arch / arm / mach-s3c2410 / include / mach / uncompress.h

/* arch/arm/mach-s3c2410/include/mach/uncompress.h
 *
 * Copyright (c) 2003-2007 Simtec Electronics
 *	http://armlinux.simtec.co.uk/
 *	Ben Dooks <ben@simtec.co.uk>
 *
 * S3C2410 - uncompress code
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H

#include <mach/regs-gpio.h>
#include <mach/map.h>

/* working in physical space... */
#undef S3C2410_GPIOREG
#define S3C2410_GPIOREG(x) ((S3C24XX_PA_GPIO + (x)))

#include <plat/uncompress.h>

static inline int is_arm926(void)
{
	unsigned int cpuid;

	asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (cpuid));

	return ((cpuid & 0xff0) == 0x260);
}

static void arch_detect_cpu(void)
{
	unsigned int cpuid;

	cpuid = *((volatile unsigned int *)S3C2410_GSTATUS1);
	cpuid &= S3C2410_GSTATUS1_IDMASK;

	if (is_arm926() || cpuid == S3C2410_GSTATUS1_2440 ||
	    cpuid == S3C2410_GSTATUS1_2442) {
		fifo_mask = S3C2440_UFSTAT_TXMASK;
		fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
	} else {
		fifo_mask = S3C2410_UFSTAT_TXMASK;
		fifo_max = 15 << S3C2410_UFSTAT_TXSHIFT;
	}
}

#endif /* __ASM_ARCH_UNCOMPRESS_H */
Commit	Line	Data
a09e64fb	1	/* arch/arm/mach-s3c2410/include/mach/uncompress.h
1da177e4	2	*
ccae941e	3	* Copyright (c) 2003-2007 Simtec Electronics
dd1313a1	4	* http://armlinux.simtec.co.uk/
f056076e	5	* Ben Dooks <ben@simtec.co.uk>
1da177e4 LT	6	*
	7	* S3C2410 - uncompress code
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
1da177e4 LT	12	*/
	13
	14	#ifndef __ASM_ARCH_UNCOMPRESS_H
	15	#define __ASM_ARCH_UNCOMPRESS_H
	16
a09e64fb RK	17	#include <mach/regs-gpio.h>
a09e64fb RK	18	#include <mach/map.h>
1da177e4 LT	19
	20	/* working in physical space... */
	21	#undef S3C2410_GPIOREG
0367a8d3	22	#define S3C2410_GPIOREG(x) ((S3C24XX_PA_GPIO + (x)))
a14a26ac	23
d5120ae7	24	#include <plat/uncompress.h>
1da177e4	25
5c49218a BD	26	static inline int is_arm926(void)
	27	{
	28	unsigned int cpuid;
	29
	30	asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (cpuid));
	31
	32	return ((cpuid & 0xff0) == 0x260);
	33	}
	34
a14a26ac	35	static void arch_detect_cpu(void)
1da177e4	36	{
a14a26ac	37	unsigned int cpuid;
1da177e4	38
bd7b1702	39	cpuid = ((volatile unsigned int )S3C2410_GSTATUS1);
1da177e4	40	cpuid &= S3C2410_GSTATUS1_IDMASK;
1da177e4	41
5c49218a	42	if (is_arm926() \|\| cpuid == S3C2410_GSTATUS1_2440 \|\|
a14a26ac BD	43	cpuid == S3C2410_GSTATUS1_2442) {
	44	fifo_mask = S3C2440_UFSTAT_TXMASK;
	45	fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
1da177e4	46	} else {
a14a26ac BD	47	fifo_mask = S3C2410_UFSTAT_TXMASK;
a14a26ac BD	48	fifo_max = 15 << S3C2410_UFSTAT_TXSHIFT;
1da177e4	49	}
1da177e4 LT	50	}
1da177e4 LT	51
1da177e4	52	#endif /* __ASM_ARCH_UNCOMPRESS_H */