diff options
Diffstat (limited to 'arch/mips/sibyte/swarm/setup.c')
| -rw-r--r-- | arch/mips/sibyte/swarm/setup.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c new file mode 100644 index 0000000..457aeb7 --- /dev/null +++ b/arch/mips/sibyte/swarm/setup.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + * Setup code for the SWARM board + */ + +#include <linux/config.h> +#include <linux/spinlock.h> +#include <linux/mm.h> +#include <linux/bootmem.h> +#include <linux/blkdev.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/tty.h> +#include <linux/initrd.h> + +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/bootinfo.h> +#include <asm/mipsregs.h> +#include <asm/reboot.h> +#include <asm/time.h> +#include <asm/traps.h> +#include <asm/sibyte/sb1250.h> +#include <asm/sibyte/sb1250_regs.h> +#include <asm/sibyte/sb1250_genbus.h> +#include <asm/sibyte/board.h> + +extern void sb1250_setup(void); + +extern int xicor_probe(void); +extern int xicor_set_time(unsigned long); +extern unsigned long xicor_get_time(void); + +extern int m41t81_probe(void); +extern int m41t81_set_time(unsigned long); +extern unsigned long m41t81_get_time(void); + +const char *get_system_type(void) +{ + return "SiByte " SIBYTE_BOARD_NAME; +} + +void __init swarm_timer_setup(struct irqaction *irq) +{ + /* + * we don't set up irqaction, because we will deliver timer + * interrupts through low-level (direct) meachanism. + */ + + /* We only need to setup the generic timer */ + sb1250_time_init(); +} + +int swarm_be_handler(struct pt_regs *regs, int is_fixup) +{ + if (!is_fixup && (regs->cp0_cause & 4)) { + /* Data bus error - print PA */ +#ifdef CONFIG_MIPS64 + printk("DBE physical address: %010lx\n", + __read_64bit_c0_register($26, 1)); +#else + printk("DBE physical address: %010llx\n", + __read_64bit_c0_split($26, 1)); +#endif + } + return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL); +} + +static int __init swarm_setup(void) +{ + sb1250_setup(); + + panic_timeout = 5; /* For debug. */ + + board_timer_setup = swarm_timer_setup; + board_be_handler = swarm_be_handler; + + if (xicor_probe()) { + printk("swarm setup: Xicor 1241 RTC detected.\n"); + rtc_get_time = xicor_get_time; + rtc_set_time = xicor_set_time; + } + + if (m41t81_probe()) { + printk("swarm setup: M41T81 RTC detected.\n"); + rtc_get_time = m41t81_get_time; + rtc_set_time = m41t81_set_time; + } + + printk("This kernel optimized for " +#ifdef CONFIG_SIMULATION + "simulation" +#else + "board" +#endif + " runs " +#ifdef CONFIG_SIBYTE_CFE + "with" +#else + "without" +#endif + " CFE\n"); + +#ifdef CONFIG_VT + screen_info = (struct screen_info) { + 0, 0, /* orig-x, orig-y */ + 0, /* unused */ + 52, /* orig_video_page */ + 3, /* orig_video_mode */ + 80, /* orig_video_cols */ + 4626, 3, 9, /* unused, ega_bx, unused */ + 25, /* orig_video_lines */ + 0x22, /* orig_video_isVGA */ + 16 /* orig_video_points */ + }; + /* XXXKW for CFE, get lines/cols from environment */ +#endif + + return 0; +} + +early_initcall(swarm_setup); + +#ifdef LEDS_PHYS + +#ifdef CONFIG_SIBYTE_CARMEL +/* XXXKW need to detect Monterey/LittleSur/etc */ +#undef LEDS_PHYS +#define LEDS_PHYS MLEDS_PHYS +#endif + +#define setled(index, c) \ + ((unsigned char *)(IOADDR(LEDS_PHYS)+0x20))[(3-(index))<<3] = (c) +void setleds(char *str) +{ + int i; + for (i = 0; i < 4; i++) { + if (!str[i]) { + setled(i, ' '); + } else { + setled(i, str[i]); + } + } +} +#endif |
