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/*
*
* Copyright (C) 1999 Silicon Graphics, Inc.
* Copyright (C) Vijay Chander(vijay@engr.sgi.com)
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/string.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/timex.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <asm/sn/mmzone_sn1.h>
#include <asm/io.h>
#include <asm/machvec.h>
#include <asm/system.h>
#include <asm/processor.h>
/*
* The format of "screen_info" is strange, and due to early i386-setup
* code. This is just enough to make the console code think we're on a
* VGA color display.
*/
struct screen_info sn1_screen_info = {
orig_x: 0,
orig_y: 0,
orig_video_mode: 3,
orig_video_cols: 80,
orig_video_ega_bx: 3,
orig_video_lines: 25,
orig_video_isVGA: 1,
orig_video_points: 16
};
/*
* This is here so we can use the CMOS detection in ide-probe.c to
* determine what drives are present. In theory, we don't need this
* as the auto-detection could be done via ide-probe.c:do_probe() but
* in practice that would be much slower, which is painful when
* running in the simulator. Note that passing zeroes in DRIVE_INFO
* is sufficient (the IDE driver will autodetect the drive geometry).
*/
char drive_info[4*16];
unsigned long
sn1_map_nr (unsigned long addr)
{
#ifdef CONFIG_DISCONTIGMEM
return MAP_NR_SN1(addr);
#else
return MAP_NR_DENSE(addr);
#endif
}
void __init
sn1_setup(char **cmdline_p)
{
extern void init_sn1_smp_config(void);
ROOT_DEV = to_kdev_t(0x0301); /* default to first IDE drive */
init_sn1_smp_config();
#ifdef ZZZ
#if !defined (CONFIG_IA64_SOFTSDV_HACKS)
/*
* Program the timer to deliver timer ticks. 0x40 is the I/O port
* address of PIT counter 0, 0x43 is the I/O port address of the
* PIT control word.
*/
request_region(0x40,0x20,"timer");
outb(0x34, 0x43); /* Control word */
outb(LATCH & 0xff , 0x40); /* LSB */
outb(LATCH >> 8, 0x40); /* MSB */
printk("PIT: LATCH at 0x%x%x for %d HZ\n", LATCH >> 8, LATCH & 0xff, HZ);
#endif
#endif
#ifdef CONFIG_SMP
init_smp_config();
#endif
screen_info = sn1_screen_info;
}
int
IS_RUNNING_ON_SIMULATOR(void)
{
#ifdef CONFIG_IA64_SGI_SN1_SIM
long sn;
asm("mov %0=cpuid[%1]" : "=r"(sn) : "r"(2));
return(sn == SNMAGIC);
#else
return(0);
#endif
}
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