setup.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:3k
- /*
- * 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, 2000 by Ralf Baechle
- */
- #include <asm/ptrace.h>
- #include <linux/config.h>
- #include <linux/hdreg.h>
- #include <linux/ioport.h>
- #include <linux/sched.h>
- #include <linux/init.h>
- #include <linux/interrupt.h>
- #include <linux/timex.h>
- #include <linux/pci.h>
- #include <linux/mc146818rtc.h>
- #include <linux/console.h>
- #include <linux/fb.h>
- #include <linux/pc_keyb.h>
- #include <linux/ide.h>
- #include <asm/bcache.h>
- #include <asm/bootinfo.h>
- #include <asm/keyboard.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/processor.h>
- #include <asm/reboot.h>
- #include <asm/sni.h>
- extern void sni_machine_restart(char *command);
- extern void sni_machine_halt(void);
- extern void sni_machine_power_off(void);
- extern struct ide_ops std_ide_ops;
- extern struct rtc_ops std_rtc_ops;
- extern struct kbd_ops std_kbd_ops;
- void (*board_time_init)(struct irqaction *irq);
- static void __init sni_rm200_pci_time_init(struct irqaction *irq)
- {
- /* set the clock to 100 Hz */
- outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */
- outb_p(LATCH & 0xff , 0x40); /* LSB */
- outb(LATCH >> 8 , 0x40); /* MSB */
- setup_irq(0, irq);
- }
- unsigned char aux_device_present;
- extern unsigned char sni_map_isa_cache;
- /*
- * A bit more gossip about the iron we're running on ...
- */
- static inline void sni_pcimt_detect(void)
- {
- char boardtype[80];
- unsigned char csmsr;
- char *p = boardtype;
- unsigned int asic;
- csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
- p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300");
- if ((csmsr & 0x80) == 0)
- p += sprintf(p, ", board revision %s",
- (csmsr & 0x20) ? "D" : "C");
- asic = csmsr & 0x80;
- asic = (csmsr & 0x08) ? asic : !asic;
- p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1");
- printk("%s.n", boardtype);
- }
- void __init sni_rm200_pci_setup(void)
- {
- sni_pcimt_detect();
- sni_pcimt_sc_init();
- mips_io_port_base = SNI_PORT_BASE;
- /*
- * Setup (E)ISA I/O memory access stuff
- */
- isa_slot_offset = 0xb0000000;
- // sni_map_isa_cache = 0;
- EISA_bus = 1;
- request_region(0x00,0x20,"dma1");
- request_region(0x40,0x20,"timer");
- /* XXX FIXME: CONFIG_RTC */
- request_region(0x70,0x10,"rtc");
- request_region(0x80,0x10,"dma page reg");
- request_region(0xc0,0x20,"dma2");
- board_time_init = sni_rm200_pci_time_init;
- _machine_restart = sni_machine_restart;
- _machine_halt = sni_machine_halt;
- _machine_power_off = sni_machine_power_off;
- aux_device_present = 0xaa;
- /*
- * Some cluefull person has placed the PCI config data directly in
- * the I/O port space ...
- */
- request_region(0xcfc,0x04,"PCI config data");
- #ifdef CONFIG_BLK_DEV_IDE
- ide_ops = &std_ide_ops;
- #endif
- conswitchp = &vga_con;
- 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 */
- 50, /* orig_video_lines */
- 0x22, /* orig_video_isVGA */
- 16 /* orig_video_points */
- };
- rtc_ops = &std_rtc_ops;
- kbd_ops = &std_kbd_ops;
- #ifdef CONFIG_PSMOUSE
- aux_device_present = 0xaa;
- #endif
- }