setup.c
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上传日期:2013-02-24
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文件大小:4k
- /*
- * 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, 1998, 2001 by Ralf Baechle
- * Copyright (C) 2001 MIPS Technologies, Inc.
- */
- #include <linux/config.h>
- #include <linux/hdreg.h>
- #include <linux/init.h>
- #include <linux/ioport.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/mm.h>
- #include <linux/console.h>
- #include <linux/fb.h>
- #include <linux/mc146818rtc.h>
- #include <linux/ide.h>
- #include <asm/bootinfo.h>
- #include <asm/keyboard.h>
- #include <asm/irq.h>
- #include <asm/jazz.h>
- #include <asm/jazzdma.h>
- #include <asm/ptrace.h>
- #include <asm/reboot.h>
- #include <asm/io.h>
- #include <asm/pgtable.h>
- /*
- * Initial irq handlers.
- */
- static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
- /*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
- static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL};
- extern asmlinkage void jazz_handle_int(void);
- extern void jazz_machine_restart(char *command);
- extern void jazz_machine_halt(void);
- extern void jazz_machine_power_off(void);
- extern struct ide_ops std_ide_ops;
- extern struct rtc_ops jazz_rtc_ops;
- extern struct kbd_ops jazz_kbd_ops;
- extern struct fd_ops *fd_ops;
- extern struct fd_ops jazz_fd_ops;
- void (*board_time_init)(struct irqaction *irq);
- static void __init jazz_time_init(struct irqaction *irq)
- {
- /* set the clock to 100 Hz */
- r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
- i8259_setup_irq(JAZZ_TIMER_IRQ, irq);
- }
- static void __init jazz_irq_setup(void)
- {
- set_except_vector(0, jazz_handle_int);
- r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
- JAZZ_IE_ETHERNET |
- JAZZ_IE_SCSI |
- JAZZ_IE_SERIAL1 |
- JAZZ_IE_SERIAL2 |
- JAZZ_IE_PARALLEL |
- JAZZ_IE_FLOPPY);
- r4030_read_reg16(JAZZ_IO_IRQ_SOURCE); /* clear pending IRQs */
- r4030_read_reg32(JAZZ_R4030_INVAL_ADDR); /* clear error bits */
- change_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
- /* set the clock to 100 Hz */
- r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
- request_region(0x20, 0x20, "pic1");
- request_region(0xa0, 0x20, "pic2");
- i8259_setup_irq(2, &irq2);
- }
- void __init jazz_setup(void)
- {
- add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
- add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
- add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
- irq_setup = jazz_irq_setup;
- mips_io_port_base = JAZZ_PORT_BASE;
- if (mips_machtype == MACH_MIPS_MAGNUM_4000)
- EISA_bus = 1;
- isa_slot_offset = 0xe3000000;
- request_region(0x00,0x20,"dma1");
- request_region(0x40,0x20,"timer");
- request_region(0x80,0x10,"dma page reg");
- request_region(0xc0,0x20,"dma2");
- board_time_init = jazz_time_init;
- /* The RTC is outside the port address space */
- _machine_restart = jazz_machine_restart;
- _machine_halt = jazz_machine_halt;
- _machine_power_off = jazz_machine_power_off;
- #ifdef CONFIG_BLK_DEV_IDE
- ide_ops = &std_ide_ops;
- #endif
- #ifdef CONFIG_BLK_DEV_FD
- fd_ops = &jazz_fd_ops;
- #endif
- #ifdef CONFIG_VT
- conswitchp = &dummy_con;
- #endif
- #warning "Somebody should check if screen_info is ok for Jazz."
- screen_info = (struct screen_info) {
- 0, 0, /* orig-x, orig-y */
- 0, /* unused */
- 0, /* orig_video_page */
- 0, /* orig_video_mode */
- 160, /* orig_video_cols */
- 0, 0, 0, /* unused, ega_bx, unused */
- 64, /* orig_video_lines */
- 0, /* orig_video_isVGA */
- 16 /* orig_video_points */
- };
- rtc_ops = &jazz_rtc_ops;
- kbd_ops = &jazz_kbd_ops;
- vdma_init();
- }