[deliverable/linux.git] / arch / mips / sibyte / swarm / setup.c

/*
 * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
 *
 * 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 program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/*
 * Setup code for the SWARM board
 */

#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/blkdev.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/screen_info.h>
#include <linux/initrd.h>

#include <asm/irq.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/mipsregs.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/traps.h>
#include <asm/sibyte/sb1250.h>
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
#include <asm/sibyte/bcm1480_regs.h>
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
#include <asm/sibyte/sb1250_regs.h>
#else
#error invalid SiByte board configuration
#endif
#include <asm/sibyte/sb1250_genbus.h>
#include <asm/sibyte/board.h>

#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
extern void bcm1480_setup(void);
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
extern void sb1250_setup(void);
#else
#error invalid SiByte board configuration
#endif

extern int xicor_probe(void);
extern int xicor_set_time(unsigned long);
extern unsigned long xicor_get_time(void);

extern int m41t81_probe(void);
extern int m41t81_set_time(unsigned long);
extern unsigned long m41t81_get_time(void);

const char *get_system_type(void)
{
	return "SiByte " SIBYTE_BOARD_NAME;
}

int swarm_be_handler(struct pt_regs *regs, int is_fixup)
{
	if (!is_fixup && (regs->cp0_cause & 4)) {
		/* Data bus error - print PA */
		printk("DBE physical address: %010Lx\n",
		       __read_64bit_c0_register($26, 1));
	}
	return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
}

enum swarm_rtc_type {
	RTC_NONE,
	RTC_XICOR,
	RTC_M4LT81
};

enum swarm_rtc_type swarm_rtc_type;

void read_persistent_clock(struct timespec *ts)
{
	unsigned long sec;

	switch (swarm_rtc_type) {
	case RTC_XICOR:
		sec = xicor_get_time();
		break;

	case RTC_M4LT81:
		sec = m41t81_get_time();
		break;

	case RTC_NONE:
	default:
		sec = mktime(2000, 1, 1, 0, 0, 0);
		break;
	}
	ts->tv_sec = sec;
	tv->tv_nsec = 0;
}

int rtc_mips_set_time(unsigned long sec)
{
	switch (swarm_rtc_type) {
	case RTC_XICOR:
		return xicor_set_time(sec);

	case RTC_M4LT81:
		return m41t81_set_time(sec);

	case RTC_NONE:
	default:
		return -1;
	}
}

void __init plat_mem_setup(void)
{
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
	bcm1480_setup();
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
	sb1250_setup();
#else
#error invalid SiByte board configuration
#endif

	panic_timeout = 5;  /* For debug.  */

	board_be_handler = swarm_be_handler;

	if (xicor_probe())
		swarm_rtc_type = RTC_XICOR;
	if (m41t81_probe())
		swarm_rtc_type = RTC_M4LT81;

#ifdef CONFIG_VT
	screen_info = (struct screen_info) {
		0, 0,           /* orig-x, orig-y */
		0,              /* unused */
		52,             /* orig_video_page */
		3,              /* orig_video_mode */
		80,             /* orig_video_cols */
		4626, 3, 9,     /* unused, ega_bx, unused */
		25,             /* orig_video_lines */
		0x22,           /* orig_video_isVGA */
		16              /* orig_video_points */
       };
       /* XXXKW for CFE, get lines/cols from environment */
#endif
}

#ifdef LEDS_PHYS

#ifdef CONFIG_SIBYTE_CARMEL
/* XXXKW need to detect Monterey/LittleSur/etc */
#undef LEDS_PHYS
#define LEDS_PHYS MLEDS_PHYS
#endif

void setleds(char *str)
{
	void *reg;
	int i;

	for (i = 0; i < 4; i++) {
		reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3);

		if (!str[i])
			writeb(' ', reg);
		else
			writeb(str[i], reg);
	}
}

#endif /* LEDS_PHYS */
Commit	Line	Data
1da177e4	1	/*
f137e463	2	* Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
1da177e4 LT	3	* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
	4	*
	5	* This program is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU General Public License
	7	* as published by the Free Software Foundation; either version 2
	8	* of the License, or (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	18	*/
	19
	20	/*
	21	* Setup code for the SWARM board
	22	*/
	23
1da177e4 LT	24	#include <linux/spinlock.h>
	25	#include <linux/mm.h>
	26	#include <linux/bootmem.h>
	27	#include <linux/blkdev.h>
	28	#include <linux/init.h>
	29	#include <linux/kernel.h>
894673ee	30	#include <linux/screen_info.h>
1da177e4 LT	31	#include <linux/initrd.h>
	32
	33	#include <asm/irq.h>
	34	#include <asm/io.h>
	35	#include <asm/bootinfo.h>
	36	#include <asm/mipsregs.h>
	37	#include <asm/reboot.h>
	38	#include <asm/time.h>
	39	#include <asm/traps.h>
	40	#include <asm/sibyte/sb1250.h>
f137e463 AI	41	#if defined(CONFIG_SIBYTE_BCM1x55) \|\| defined(CONFIG_SIBYTE_BCM1x80)
	42	#include <asm/sibyte/bcm1480_regs.h>
	43	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
1da177e4	44	#include <asm/sibyte/sb1250_regs.h>
f137e463	45	#else
03dbd2e0	46	#error invalid SiByte board configuration
f137e463	47	#endif
1da177e4 LT	48	#include <asm/sibyte/sb1250_genbus.h>
	49	#include <asm/sibyte/board.h>
	50
f137e463 AI	51	#if defined(CONFIG_SIBYTE_BCM1x55) \|\| defined(CONFIG_SIBYTE_BCM1x80)
	52	extern void bcm1480_setup(void);
	53	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
1da177e4	54	extern void sb1250_setup(void);
f137e463	55	#else
03dbd2e0	56	#error invalid SiByte board configuration
f137e463	57	#endif
1da177e4 LT	58
	59	extern int xicor_probe(void);
	60	extern int xicor_set_time(unsigned long);
	61	extern unsigned long xicor_get_time(void);
	62
	63	extern int m41t81_probe(void);
	64	extern int m41t81_set_time(unsigned long);
	65	extern unsigned long m41t81_get_time(void);
	66
	67	const char *get_system_type(void)
	68	{
	69	return "SiByte " SIBYTE_BOARD_NAME;
	70	}
	71
1da177e4 LT	72	int swarm_be_handler(struct pt_regs *regs, int is_fixup)
	73	{
	74	if (!is_fixup && (regs->cp0_cause & 4)) {
	75	/* Data bus error - print PA */
6aaf7786	76	printk("DBE physical address: %010Lx\n",
1da177e4	77	__read_64bit_c0_register($26, 1));
1da177e4 LT	78	}
	79	return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
	80	}
	81
4b550488 RB	82	enum swarm_rtc_type {
	83	RTC_NONE,
	84	RTC_XICOR,
	85	RTC_M4LT81
	86	};
	87
	88	enum swarm_rtc_type swarm_rtc_type;
	89
d4f587c6	90	void read_persistent_clock(struct timespec *ts)
4b550488	91	{
d4f587c6 MS	92	unsigned long sec;
d4f587c6 MS	93
4b550488 RB	94	switch (swarm_rtc_type) {
4b550488 RB	95	case RTC_XICOR:
d4f587c6 MS	96	sec = xicor_get_time();
d4f587c6 MS	97	break;
4b550488 RB	98
4b550488 RB	99	case RTC_M4LT81:
d4f587c6 MS	100	sec = m41t81_get_time();
d4f587c6 MS	101	break;
4b550488 RB	102
	103	case RTC_NONE:
	104	default:
d4f587c6 MS	105	sec = mktime(2000, 1, 1, 0, 0, 0);
d4f587c6 MS	106	break;
4b550488	107	}
d4f587c6 MS	108	ts->tv_sec = sec;
d4f587c6 MS	109	tv->tv_nsec = 0;
4b550488 RB	110	}
	111
	112	int rtc_mips_set_time(unsigned long sec)
	113	{
	114	switch (swarm_rtc_type) {
	115	case RTC_XICOR:
	116	return xicor_set_time(sec);
	117
	118	case RTC_M4LT81:
	119	return m41t81_set_time(sec);
	120
	121	case RTC_NONE:
	122	default:
	123	return -1;
	124	}
	125	}
	126
2925aba4	127	void __init plat_mem_setup(void)
1da177e4	128	{
f137e463 AI	129	#if defined(CONFIG_SIBYTE_BCM1x55) \|\| defined(CONFIG_SIBYTE_BCM1x80)
	130	bcm1480_setup();
	131	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
1da177e4	132	sb1250_setup();
f137e463	133	#else
03dbd2e0	134	#error invalid SiByte board configuration
f137e463	135	#endif
1da177e4 LT	136
	137	panic_timeout = 5; /* For debug. */
	138
1da177e4 LT	139	board_be_handler = swarm_be_handler;
1da177e4 LT	140
4b550488 RB	141	if (xicor_probe())
	142	swarm_rtc_type = RTC_XICOR;
	143	if (m41t81_probe())
	144	swarm_rtc_type = RTC_M4LT81;
1da177e4	145
1da177e4 LT	146	#ifdef CONFIG_VT
	147	screen_info = (struct screen_info) {
	148	0, 0, /* orig-x, orig-y */
	149	0, /* unused */
	150	52, /* orig_video_page */
	151	3, /* orig_video_mode */
	152	80, /* orig_video_cols */
	153	4626, 3, 9, /* unused, ega_bx, unused */
	154	25, /* orig_video_lines */
	155	0x22, /* orig_video_isVGA */
	156	16 /* orig_video_points */
	157	};
	158	/* XXXKW for CFE, get lines/cols from environment */
	159	#endif
1da177e4 LT	160	}
1da177e4 LT	161
1da177e4 LT	162	#ifdef LEDS_PHYS
	163
	164	#ifdef CONFIG_SIBYTE_CARMEL
	165	/* XXXKW need to detect Monterey/LittleSur/etc */
	166	#undef LEDS_PHYS
	167	#define LEDS_PHYS MLEDS_PHYS
	168	#endif
	169
1da177e4 LT	170	void setleds(char *str)
1da177e4 LT	171	{
8fb303c7	172	void *reg;
1da177e4	173	int i;
8fb303c7	174
1da177e4	175	for (i = 0; i < 4; i++) {
8fb303c7 RB	176	reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3);
	177
	178	if (!str[i])
	179	writeb(' ', reg);
	180	else
	181	writeb(str[i], reg);
1da177e4 LT	182	}
1da177e4 LT	183	}
8fb303c7 RB	184
8fb303c7 RB	185	#endif /* LEDS_PHYS */