2 * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
3 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
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.
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.
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.
21 * Setup code for the SWARM board
24 #include <linux/config.h>
25 #include <linux/spinlock.h>
27 #include <linux/bootmem.h>
28 #include <linux/blkdev.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/tty.h>
32 #include <linux/initrd.h>
36 #include <asm/bootinfo.h>
37 #include <asm/mipsregs.h>
38 #include <asm/reboot.h>
40 #include <asm/traps.h>
41 #include <asm/sibyte/sb1250.h>
42 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
43 #include <asm/sibyte/bcm1480_regs.h>
44 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
45 #include <asm/sibyte/sb1250_regs.h>
47 #error invalid SiByte board configuation
49 #include <asm/sibyte/sb1250_genbus.h>
50 #include <asm/sibyte/board.h>
52 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
53 extern void bcm1480_setup(void);
54 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
55 extern void sb1250_setup(void);
57 #error invalid SiByte board configuation
60 extern int xicor_probe(void);
61 extern int xicor_set_time(unsigned long);
62 extern unsigned long xicor_get_time(void);
64 extern int m41t81_probe(void);
65 extern int m41t81_set_time(unsigned long);
66 extern unsigned long m41t81_get_time(void);
68 const char *get_system_type(void)
70 return "SiByte " SIBYTE_BOARD_NAME;
73 void __init swarm_timer_setup(struct irqaction *irq)
76 * we don't set up irqaction, because we will deliver timer
77 * interrupts through low-level (direct) meachanism.
80 /* We only need to setup the generic timer */
81 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
83 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
86 #error invalid SiByte board configuation
90 int swarm_be_handler(struct pt_regs *regs, int is_fixup)
92 if (!is_fixup && (regs->cp0_cause & 4)) {
93 /* Data bus error - print PA */
94 printk("DBE physical address: %010Lx\n",
95 __read_64bit_c0_register($26, 1));
97 return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
100 void __init plat_setup(void)
102 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
104 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
107 #error invalid SiByte board configuation
110 panic_timeout = 5; /* For debug. */
112 board_timer_setup = swarm_timer_setup;
113 board_be_handler = swarm_be_handler;
116 printk("swarm setup: Xicor 1241 RTC detected.\n");
117 rtc_get_time = xicor_get_time;
118 rtc_set_time = xicor_set_time;
121 if (m41t81_probe()) {
122 printk("swarm setup: M41T81 RTC detected.\n");
123 rtc_get_time = m41t81_get_time;
124 rtc_set_time = m41t81_set_time;
127 printk("This kernel optimized for "
128 #ifdef CONFIG_SIMULATION
134 #ifdef CONFIG_SIBYTE_CFE
142 screen_info = (struct screen_info) {
143 0, 0, /* orig-x, orig-y */
145 52, /* orig_video_page */
146 3, /* orig_video_mode */
147 80, /* orig_video_cols */
148 4626, 3, 9, /* unused, ega_bx, unused */
149 25, /* orig_video_lines */
150 0x22, /* orig_video_isVGA */
151 16 /* orig_video_points */
153 /* XXXKW for CFE, get lines/cols from environment */
159 #ifdef CONFIG_SIBYTE_CARMEL
160 /* XXXKW need to detect Monterey/LittleSur/etc */
162 #define LEDS_PHYS MLEDS_PHYS
165 #define setled(index, c) \
166 ((unsigned char *)(IOADDR(LEDS_PHYS)+0x20))[(3-(index))<<3] = (c)
167 void setleds(char *str)
170 for (i = 0; i < 4; i++) {