- /*
- * Setup pointers to hardware dependent routines.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1996, 1997 by Ralf Baechle
- * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
- *
- */
- #include <linux/config.h>
- #include <linux/interrupt.h>
- #include <linux/pci.h>
- #include <linux/mc146818rtc.h>
- #include <linux/init.h>
- #include <linux/ide.h>
- #include <asm/bootinfo.h>
- #include <asm/time.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/cobalt/cobalt.h>
- #include <asm/pci.h>
- #include <asm/processor.h>
- #include <asm/reboot.h>
- #include <asm/traps.h>
- extern void cobalt_machine_restart(char *command);
- extern void cobalt_machine_halt(void);
- extern void cobalt_machine_power_off(void);
- extern struct rtc_ops std_rtc_ops;
- extern struct ide_ops std_ide_ops;
- char arcs_cmdline[CL_SIZE] = {
- "console=ttyS0,115200 "
- #ifdef CONFIG_IP_PNP
- "ip=on "
- #endif
- #ifdef CONFIG_ROOT_NFS
- "root=/dev/nfs "
- #else
- "root=/dev/hda1 "
- #endif
- };
- const char *get_system_type(void)
- {
- return "MIPS Cobalt";
- }
- #define GALILEO_T0_VAL 0xb4000850
- #define GALILEO_TIMER_CTRL 0xb4000864
- #define GALILEO_CPU_MASK 0xb4000c1c
- #define GALILEO_ENTC0 0x01
- #define GALILEO_SELTC0 0x02
- static void __init cobalt_time_init(void)
- {
- rtc_ops = &std_rtc_ops;
- }
- static void __init cobalt_timer_setup(struct irqaction *irq)
- {
- /* Load timer value for 150 Hz */
- volatile unsigned long *timer_reg = (volatile unsigned long *)GALILEO_T0_VAL;
- *timer_reg = 500000;
- /* Register our timer interrupt */
- setup_irq(COBALT_TIMER_IRQ, irq);
- /* Enable timer ints */
- *((volatile unsigned long *) GALILEO_TIMER_CTRL) =
- (unsigned long) (GALILEO_ENTC0 | GALILEO_SELTC0);
- /* Unmask timer int */
- *((volatile unsigned long *) GALILEO_CPU_MASK) = (unsigned long) 0x00000100;
- }
- void __init bus_error_init(void) { /* nothing */ }
- void __init cobalt_setup(void)
- {
- _machine_restart = cobalt_machine_restart;
- _machine_halt = cobalt_machine_halt;
- _machine_power_off = cobalt_machine_power_off;
- board_time_init = cobalt_time_init;
- board_timer_setup = cobalt_timer_setup;
- #ifdef CONFIG_BLK_DEV_IDE
- ide_ops = &std_ide_ops;
- #endif
- set_io_port_base(0xb0000000);
- /*
- * This is a prom style console. We just poke at the
- * UART to make it talk.
- * Only use this console if you really screw up and can't
- * get to the stage of setting up a real serial console.
- */
- /*ns16550_setup_console();*/
- }
- /* Prom init. We read our one and only communication with the
- firmware. Grab the amount of installed memory */
- void __init prom_init(int argc)
- {
- mips_machgroup = MACH_GROUP_COBALT;
- add_memory_region(0x0, argc & 0x7fffffff, BOOT_MEM_RAM);
- }
- void __init prom_free_prom_memory(void)
- {
- /* Nothing to do! */
- }