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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
 */

/*
 * Setup code for the SWARM board
 */

#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/console.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>
#ifdef 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>

#ifdef 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(time64_t);
extern time64_t xicor_get_time(void);

extern int m41t81_probe(void);
extern int m41t81_set_time(time64_t);
extern time64_t 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_M41T81,
};

enum swarm_rtc_type swarm_rtc_type;

void read_persistent_clock64(struct timespec64 *ts)
{
	time64_t sec;

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

	case RTC_M41T81:
		sec = m41t81_get_time();
		break;

	case RTC_NONE:
	default:
		sec = mktime64(2000, 1, 1, 0, 0, 0);
		break;
	}
	ts->tv_sec = sec;
	ts->tv_nsec = 0;
}

int update_persistent_clock64(struct timespec64 now)
{
	time64_t sec = now.tv_sec;

	switch (swarm_rtc_type) {
	case RTC_XICOR:
		return xicor_set_time(sec);

	case RTC_M41T81:
		return m41t81_set_time(sec);

	case RTC_NONE:
	default:
		return -1;
	}
}

#ifdef CONFIG_VGA_CONSOLE
static struct screen_info vgacon_screen_info = {
	.orig_video_page	= 52,
	.orig_video_mode	= 3,
	.orig_video_cols	= 80,
	.flags			= 12,
	.orig_video_ega_bx	= 3,
	.orig_video_lines	= 25,
	.orig_video_isVGA	= 0x22,
	.orig_video_points	= 16,
};
#endif

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

	mips_set_be_handler(swarm_be_handler);

	if (xicor_probe())
		swarm_rtc_type = RTC_XICOR;
	if (m41t81_probe())
		swarm_rtc_type = RTC_M41T81;

#ifdef CONFIG_VGA_CONSOLE
	vgacon_register_screen(&vgacon_screen_info);
       /* XXXKW for CFE, get lines/cols from environment */
#endif
}

#ifdef LEDS_PHYS

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
	1	// SPDX-License-Identifier: GPL-2.0-or-later
	2	/*
	3	* Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
	4	* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
	5	*/
	6
	7	/*
	8	* Setup code for the SWARM board
	9	*/
	10
	11	#include <linux/spinlock.h>
	12	#include <linux/mm.h>
	13	#include <linux/memblock.h>
	14	#include <linux/init.h>
	15	#include <linux/kernel.h>
	16	#include <linux/console.h>
	17	#include <linux/screen_info.h>
	18	#include <linux/initrd.h>
	19
	20	#include <asm/irq.h>
	21	#include <asm/io.h>
	22	#include <asm/bootinfo.h>
	23	#include <asm/mipsregs.h>
	24	#include <asm/reboot.h>
	25	#include <asm/time.h>
	26	#include <asm/traps.h>
	27	#include <asm/sibyte/sb1250.h>
	28	#ifdef CONFIG_SIBYTE_BCM1x80
	29	#include <asm/sibyte/bcm1480_regs.h>
	30	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
	31	#include <asm/sibyte/sb1250_regs.h>
	32	#else
	33	#error invalid SiByte board configuration
	34	#endif
	35	#include <asm/sibyte/sb1250_genbus.h>
	36	#include <asm/sibyte/board.h>
	37
	38	#ifdef CONFIG_SIBYTE_BCM1x80
	39	extern void bcm1480_setup(void);
	40	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
	41	extern void sb1250_setup(void);
	42	#else
	43	#error invalid SiByte board configuration
	44	#endif
	45
	46	extern int xicor_probe(void);
	47	extern int xicor_set_time(time64_t);
	48	extern time64_t xicor_get_time(void);
	49
	50	extern int m41t81_probe(void);
	51	extern int m41t81_set_time(time64_t);
	52	extern time64_t m41t81_get_time(void);
	53
	54	const char *get_system_type(void)
	55	{
	56	return "SiByte " SIBYTE_BOARD_NAME;
	57	}
	58
	59	int swarm_be_handler(struct pt_regs *regs, int is_fixup)
	60	{
	61	if (!is_fixup && (regs->cp0_cause & 4)) {
	62	/* Data bus error - print PA */
	63	printk("DBE physical address: %010Lx\n",
	64	__read_64bit_c0_register($26, 1));
	65	}
	66	return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL;
	67	}
	68
	69	enum swarm_rtc_type {
	70	RTC_NONE,
	71	RTC_XICOR,
	72	RTC_M41T81,
	73	};
	74
	75	enum swarm_rtc_type swarm_rtc_type;
	76
	77	void read_persistent_clock64(struct timespec64 *ts)
	78	{
	79	time64_t sec;
	80
	81	switch (swarm_rtc_type) {
	82	case RTC_XICOR:
	83	sec = xicor_get_time();
	84	break;
	85
	86	case RTC_M41T81:
	87	sec = m41t81_get_time();
	88	break;
	89
	90	case RTC_NONE:
	91	default:
	92	sec = mktime64(2000, 1, 1, 0, 0, 0);
	93	break;
	94	}
	95	ts->tv_sec = sec;
	96	ts->tv_nsec = 0;
	97	}
	98
	99	int update_persistent_clock64(struct timespec64 now)
	100	{
	101	time64_t sec = now.tv_sec;
	102
	103	switch (swarm_rtc_type) {
	104	case RTC_XICOR:
	105	return xicor_set_time(sec);
	106
	107	case RTC_M41T81:
	108	return m41t81_set_time(sec);
	109
	110	case RTC_NONE:
	111	default:
	112	return -1;
	113	}
	114	}
	115
	116	#ifdef CONFIG_VGA_CONSOLE
	117	static struct screen_info vgacon_screen_info = {
	118	.orig_video_page = 52,
	119	.orig_video_mode = 3,
	120	.orig_video_cols = 80,
	121	.flags = 12,
	122	.orig_video_ega_bx = 3,
	123	.orig_video_lines = 25,
	124	.orig_video_isVGA = 0x22,
	125	.orig_video_points = 16,
	126	};
	127	#endif
	128
	129	void __init plat_mem_setup(void)
	130	{
	131	#ifdef CONFIG_SIBYTE_BCM1x80
	132	bcm1480_setup();
	133	#elif defined(CONFIG_SIBYTE_SB1250) \|\| defined(CONFIG_SIBYTE_BCM112X)
	134	sb1250_setup();
	135	#else
	136	#error invalid SiByte board configuration
	137	#endif
	138
	139	mips_set_be_handler(swarm_be_handler);
	140
	141	if (xicor_probe())
	142	swarm_rtc_type = RTC_XICOR;
	143	if (m41t81_probe())
	144	swarm_rtc_type = RTC_M41T81;
	145
	146	#ifdef CONFIG_VGA_CONSOLE
	147	vgacon_register_screen(&vgacon_screen_info);
	148	/* XXXKW for CFE, get lines/cols from environment */
	149	#endif
	150	}
	151
	152	#ifdef LEDS_PHYS
	153
	154	void setleds(char *str)
	155	{
	156	void *reg;
	157	int i;
	158
	159	for (i = 0; i < 4; i++) {
	160	reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3);
	161
	162	if (!str[i])
	163	writeb(' ', reg);
	164	else
	165	writeb(str[i], reg);
	166	}
	167	}
	168
	169	#endif /* LEDS_PHYS */