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/*
* 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;
}
void __init plat_time_init(void)
{
#if defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
/* Setup HPT */
sb1250_hpt_setup();
#endif
}
void __init plat_timer_setup(struct irqaction *irq)
{
/*
* we don't set up irqaction, because we will deliver timer
* interrupts through low-level (direct) meachanism.
*/
/* We only need to setup the generic timer */
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
bcm1480_time_init();
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
sb1250_time_init();
#else
#error invalid SiByte board configuration
#endif
}
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;
unsigned long read_persistent_clock(void)
{
switch (swarm_rtc_type) {
case RTC_XICOR:
return xicor_get_time();
case RTC_M4LT81:
return m41t81_get_time();
case RTC_NONE:
default:
return mktime(2000, 1, 1, 0, 0, 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;
printk("This kernel optimized for "
#ifdef CONFIG_SIMULATION
"simulation"
#else
"board"
#endif
" runs "
#ifdef CONFIG_SIBYTE_CFE
"with"
#else
"without"
#endif
" CFE\n");
#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 */
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