1 /* 2 * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation 3 * 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 24 #include <linux/config.h> 25 #include <linux/spinlock.h> 26 #include <linux/mm.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> 33 34 #include <asm/irq.h> 35 #include <asm/io.h> 36 #include <asm/bootinfo.h> 37 #include <asm/mipsregs.h> 38 #include <asm/reboot.h> 39 #include <asm/time.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> 46 #else 47 #error invalid SiByte board configuation 48 #endif 49 #include <asm/sibyte/sb1250_genbus.h> 50 #include <asm/sibyte/board.h> 51 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); 56 #else 57 #error invalid SiByte board configuation 58 #endif 59 60 extern int xicor_probe(void); 61 extern int xicor_set_time(unsigned long); 62 extern unsigned long xicor_get_time(void); 63 64 extern int m41t81_probe(void); 65 extern int m41t81_set_time(unsigned long); 66 extern unsigned long m41t81_get_time(void); 67 68 const char *get_system_type(void) 69 { 70 return "SiByte " SIBYTE_BOARD_NAME; 71 } 72 73 void __init swarm_timer_setup(struct irqaction *irq) 74 { 75 /* 76 * we don't set up irqaction, because we will deliver timer 77 * interrupts through low-level (direct) meachanism. 78 */ 79 80 /* We only need to setup the generic timer */ 81 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 82 bcm1480_time_init(); 83 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 84 sb1250_time_init(); 85 #else 86 #error invalid SiByte board configuation 87 #endif 88 } 89 90 int swarm_be_handler(struct pt_regs *regs, int is_fixup) 91 { 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)); 96 } 97 return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL); 98 } 99 100 void __init plat_setup(void) 101 { 102 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 103 bcm1480_setup(); 104 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 105 sb1250_setup(); 106 #else 107 #error invalid SiByte board configuation 108 #endif 109 110 panic_timeout = 5; /* For debug. */ 111 112 board_timer_setup = swarm_timer_setup; 113 board_be_handler = swarm_be_handler; 114 115 if (xicor_probe()) { 116 printk("swarm setup: Xicor 1241 RTC detected.\n"); 117 rtc_get_time = xicor_get_time; 118 rtc_set_time = xicor_set_time; 119 } 120 121 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; 125 } 126 127 printk("This kernel optimized for " 128 #ifdef CONFIG_SIMULATION 129 "simulation" 130 #else 131 "board" 132 #endif 133 " runs " 134 #ifdef CONFIG_SIBYTE_CFE 135 "with" 136 #else 137 "without" 138 #endif 139 " CFE\n"); 140 141 #ifdef CONFIG_VT 142 screen_info = (struct screen_info) { 143 0, 0, /* orig-x, orig-y */ 144 0, /* unused */ 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 */ 152 }; 153 /* XXXKW for CFE, get lines/cols from environment */ 154 #endif 155 } 156 157 #ifdef LEDS_PHYS 158 159 #ifdef CONFIG_SIBYTE_CARMEL 160 /* XXXKW need to detect Monterey/LittleSur/etc */ 161 #undef LEDS_PHYS 162 #define LEDS_PHYS MLEDS_PHYS 163 #endif 164 165 #define setled(index, c) \ 166 ((unsigned char *)(IOADDR(LEDS_PHYS)+0x20))[(3-(index))<<3] = (c) 167 void setleds(char *str) 168 { 169 int i; 170 for (i = 0; i < 4; i++) { 171 if (!str[i]) { 172 setled(i, ' '); 173 } else { 174 setled(i, str[i]); 175 } 176 } 177 } 178 #endif 179