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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Andrew Isaacsonf137e462005-10-19 23:56:38 -07002 * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
4 *
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.
9 *
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.
14 *
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.
18 */
19
20/*
21 * Setup code for the SWARM board
22 */
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/spinlock.h>
25#include <linux/mm.h>
26#include <linux/bootmem.h>
27#include <linux/blkdev.h>
28#include <linux/init.h>
29#include <linux/kernel.h>
Jon Smirl894673e2006-07-10 04:44:13 -070030#include <linux/screen_info.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/initrd.h>
32
33#include <asm/irq.h>
34#include <asm/io.h>
35#include <asm/bootinfo.h>
36#include <asm/mipsregs.h>
37#include <asm/reboot.h>
38#include <asm/time.h>
39#include <asm/traps.h>
40#include <asm/sibyte/sb1250.h>
Andrew Isaacsonf137e462005-10-19 23:56:38 -070041#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
42#include <asm/sibyte/bcm1480_regs.h>
43#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <asm/sibyte/sb1250_regs.h>
Andrew Isaacsonf137e462005-10-19 23:56:38 -070045#else
Maciej W. Rozycki03dbd2e2006-11-30 13:45:32 +000046#error invalid SiByte board configuration
Andrew Isaacsonf137e462005-10-19 23:56:38 -070047#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#include <asm/sibyte/sb1250_genbus.h>
49#include <asm/sibyte/board.h>
50
Andrew Isaacsonf137e462005-10-19 23:56:38 -070051#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
52extern void bcm1480_setup(void);
53#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
Linus Torvalds1da177e2005-04-16 15:20:36 -070054extern void sb1250_setup(void);
Andrew Isaacsonf137e462005-10-19 23:56:38 -070055#else
Maciej W. Rozycki03dbd2e2006-11-30 13:45:32 +000056#error invalid SiByte board configuration
Andrew Isaacsonf137e462005-10-19 23:56:38 -070057#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59extern int xicor_probe(void);
60extern int xicor_set_time(unsigned long);
61extern unsigned long xicor_get_time(void);
62
63extern int m41t81_probe(void);
64extern int m41t81_set_time(unsigned long);
65extern unsigned long m41t81_get_time(void);
66
67const char *get_system_type(void)
68{
69 return "SiByte " SIBYTE_BOARD_NAME;
70}
71
Linus Torvalds1da177e2005-04-16 15:20:36 -070072int swarm_be_handler(struct pt_regs *regs, int is_fixup)
73{
74 if (!is_fixup && (regs->cp0_cause & 4)) {
75 /* Data bus error - print PA */
Ralf Baechle6aaf7782005-10-01 13:14:58 +010076 printk("DBE physical address: %010Lx\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 __read_64bit_c0_register($26, 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 }
79 return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
80}
81
Ralf Baechle4b550482007-10-11 23:46:08 +010082enum swarm_rtc_type {
83 RTC_NONE,
84 RTC_XICOR,
85 RTC_M4LT81
86};
87
88enum swarm_rtc_type swarm_rtc_type;
89
90unsigned long read_persistent_clock(void)
91{
92 switch (swarm_rtc_type) {
93 case RTC_XICOR:
94 return xicor_get_time();
95
96 case RTC_M4LT81:
97 return m41t81_get_time();
98
99 case RTC_NONE:
100 default:
101 return mktime(2000, 1, 1, 0, 0, 0);
102 }
103}
104
105int rtc_mips_set_time(unsigned long sec)
106{
107 switch (swarm_rtc_type) {
108 case RTC_XICOR:
109 return xicor_set_time(sec);
110
111 case RTC_M4LT81:
112 return m41t81_set_time(sec);
113
114 case RTC_NONE:
115 default:
116 return -1;
117 }
118}
119
Ralf Baechle2925aba2006-06-18 01:32:22 +0100120void __init plat_mem_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121{
Andrew Isaacsonf137e462005-10-19 23:56:38 -0700122#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
123 bcm1480_setup();
124#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 sb1250_setup();
Andrew Isaacsonf137e462005-10-19 23:56:38 -0700126#else
Maciej W. Rozycki03dbd2e2006-11-30 13:45:32 +0000127#error invalid SiByte board configuration
Andrew Isaacsonf137e462005-10-19 23:56:38 -0700128#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
130 panic_timeout = 5; /* For debug. */
131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 board_be_handler = swarm_be_handler;
133
Ralf Baechle4b550482007-10-11 23:46:08 +0100134 if (xicor_probe())
135 swarm_rtc_type = RTC_XICOR;
136 if (m41t81_probe())
137 swarm_rtc_type = RTC_M4LT81;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139 printk("This kernel optimized for "
140#ifdef CONFIG_SIMULATION
141 "simulation"
142#else
143 "board"
144#endif
145 " runs "
146#ifdef CONFIG_SIBYTE_CFE
147 "with"
148#else
149 "without"
150#endif
151 " CFE\n");
152
153#ifdef CONFIG_VT
154 screen_info = (struct screen_info) {
155 0, 0, /* orig-x, orig-y */
156 0, /* unused */
157 52, /* orig_video_page */
158 3, /* orig_video_mode */
159 80, /* orig_video_cols */
160 4626, 3, 9, /* unused, ega_bx, unused */
161 25, /* orig_video_lines */
162 0x22, /* orig_video_isVGA */
163 16 /* orig_video_points */
164 };
165 /* XXXKW for CFE, get lines/cols from environment */
166#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167}
168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169#ifdef LEDS_PHYS
170
171#ifdef CONFIG_SIBYTE_CARMEL
172/* XXXKW need to detect Monterey/LittleSur/etc */
173#undef LEDS_PHYS
174#define LEDS_PHYS MLEDS_PHYS
175#endif
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177void setleds(char *str)
178{
Ralf Baechle8fb303c2007-03-24 14:26:13 +0000179 void *reg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 int i;
Ralf Baechle8fb303c2007-03-24 14:26:13 +0000181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 for (i = 0; i < 4; i++) {
Ralf Baechle8fb303c2007-03-24 14:26:13 +0000183 reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3);
184
185 if (!str[i])
186 writeb(' ', reg);
187 else
188 writeb(str[i], reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 }
190}
Ralf Baechle8fb303c2007-03-24 14:26:13 +0000191
192#endif /* LEDS_PHYS */