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/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> 30#include <linux/screen_info.h> 31#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> 41#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) 44#include <asm/sibyte/sb1250_regs.h> 45#else 46#error invalid SiByte board configuration 47#endif 48#include <asm/sibyte/sb1250_genbus.h> 49#include <asm/sibyte/board.h> 50 51#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 52extern void bcm1480_setup(void); 53#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 54extern void sb1250_setup(void); 55#else 56#error invalid SiByte board configuration 57#endif 58 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 72void __init swarm_time_init(void) 73{ 74#if defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 75 /* Setup HPT */ 76 sb1250_hpt_setup(); 77#endif 78} 79 80void __init plat_timer_setup(struct irqaction *irq) 81{ 82 /* 83 * we don't set up irqaction, because we will deliver timer 84 * interrupts through low-level (direct) meachanism. 85 */ 86 87 /* We only need to setup the generic timer */ 88#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 89 bcm1480_time_init(); 90#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 91 sb1250_time_init(); 92#else 93#error invalid SiByte board configuration 94#endif 95} 96 97int swarm_be_handler(struct pt_regs *regs, int is_fixup) 98{ 99 if (!is_fixup && (regs->cp0_cause & 4)) { 100 /* Data bus error - print PA */ 101 printk("DBE physical address: %010Lx\n", 102 __read_64bit_c0_register($26, 1)); 103 } 104 return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL); 105} 106 107void __init plat_mem_setup(void) 108{ 109#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 110 bcm1480_setup(); 111#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) 112 sb1250_setup(); 113#else 114#error invalid SiByte board configuration 115#endif 116 117 panic_timeout = 5; /* For debug. */ 118 119 board_time_init = swarm_time_init; 120 board_be_handler = swarm_be_handler; 121 122 if (xicor_probe()) { 123 printk("swarm setup: Xicor 1241 RTC detected.\n"); 124 rtc_mips_get_time = xicor_get_time; 125 rtc_mips_set_time = xicor_set_time; 126 } 127 128 if (m41t81_probe()) { 129 printk("swarm setup: M41T81 RTC detected.\n"); 130 rtc_mips_get_time = m41t81_get_time; 131 rtc_mips_set_time = m41t81_set_time; 132 } 133 134 printk("This kernel optimized for " 135#ifdef CONFIG_SIMULATION 136 "simulation" 137#else 138 "board" 139#endif 140 " runs " 141#ifdef CONFIG_SIBYTE_CFE 142 "with" 143#else 144 "without" 145#endif 146 " CFE\n"); 147 148#ifdef CONFIG_VT 149 screen_info = (struct screen_info) { 150 0, 0, /* orig-x, orig-y */ 151 0, /* unused */ 152 52, /* orig_video_page */ 153 3, /* orig_video_mode */ 154 80, /* orig_video_cols */ 155 4626, 3, 9, /* unused, ega_bx, unused */ 156 25, /* orig_video_lines */ 157 0x22, /* orig_video_isVGA */ 158 16 /* orig_video_points */ 159 }; 160 /* XXXKW for CFE, get lines/cols from environment */ 161#endif 162} 163 164#ifdef LEDS_PHYS 165 166#ifdef CONFIG_SIBYTE_CARMEL 167/* XXXKW need to detect Monterey/LittleSur/etc */ 168#undef LEDS_PHYS 169#define LEDS_PHYS MLEDS_PHYS 170#endif 171 172void setleds(char *str) 173{ 174 void *reg; 175 int i; 176 177 for (i = 0; i < 4; i++) { 178 reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3); 179 180 if (!str[i]) 181 writeb(' ', reg); 182 else 183 writeb(str[i], reg); 184 } 185} 186 187#endif /* LEDS_PHYS */ 188