4b550488f8
Hard to follow who is pointing what to where and why so it's simply getting in the way of the time code renovation. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
218 lines
5.1 KiB
C
218 lines
5.1 KiB
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;
|
|
}
|
|
|
|
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 */
|