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_time_init(void)
75 #if defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
81 void __init swarm_timer_setup(struct irqaction *irq)
84 * we don't set up irqaction, because we will deliver timer
85 * interrupts through low-level (direct) meachanism.
88 /* We only need to setup the generic timer */
89 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
91 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
94 #error invalid SiByte board configuation
98 int swarm_be_handler(struct pt_regs *regs, int is_fixup)
100 if (!is_fixup && (regs->cp0_cause & 4)) {
101 /* Data bus error - print PA */
102 printk("DBE physical address: %010Lx\n",
103 __read_64bit_c0_register($26, 1));
105 return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
108 void __init plat_mem_setup(void)
110 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
112 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
115 #error invalid SiByte board configuation
118 panic_timeout = 5; /* For debug. */
120 board_time_init = swarm_time_init;
121 board_timer_setup = swarm_timer_setup;
122 board_be_handler = swarm_be_handler;
125 printk("swarm setup: Xicor 1241 RTC detected.\n");
126 rtc_mips_get_time = xicor_get_time;
127 rtc_mips_set_time = xicor_set_time;
130 if (m41t81_probe()) {
131 printk("swarm setup: M41T81 RTC detected.\n");
132 rtc_mips_get_time = m41t81_get_time;
133 rtc_mips_set_time = m41t81_set_time;
136 printk("This kernel optimized for "
137 #ifdef CONFIG_SIMULATION
143 #ifdef CONFIG_SIBYTE_CFE
151 screen_info = (struct screen_info) {
152 0, 0, /* orig-x, orig-y */
154 52, /* orig_video_page */
155 3, /* orig_video_mode */
156 80, /* orig_video_cols */
157 4626, 3, 9, /* unused, ega_bx, unused */
158 25, /* orig_video_lines */
159 0x22, /* orig_video_isVGA */
160 16 /* orig_video_points */
162 /* XXXKW for CFE, get lines/cols from environment */
168 #ifdef CONFIG_SIBYTE_CARMEL
169 /* XXXKW need to detect Monterey/LittleSur/etc */
171 #define LEDS_PHYS MLEDS_PHYS
174 #define setled(index, c) \
175 ((unsigned char *)(IOADDR(LEDS_PHYS)+0x20))[(3-(index))<<3] = (c)
176 void setleds(char *str)
179 for (i = 0; i < 4; i++) {