arch/ia64/dig/setup.c

   1 /*
   2  * Platform dependent support for DIG64 platforms.
   3  *
   4  * Copyright (C) 1999 Intel Corp.
   5  * Copyright (C) 1999, 2001 Hewlett-Packard Co
   6  * Copyright (C) 1999, 2001, 2003 David Mosberger-Tang <davidm@hpl.hp.com>
   7  * Copyright (C) 1999 VA Linux Systems
   8  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
   9  * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/delay.h>
  14 #include <linux/kernel.h>
  15 #include <linux/kdev_t.h>
  16 #include <linux/string.h>
  17 #include <linux/screen_info.h>
  18 #include <linux/console.h>
  19 #include <linux/timex.h>
  20 #include <linux/sched.h>
  21 #include <linux/root_dev.h>
  22
  23 #include <asm/io.h>
  24 #include <asm/machvec.h>
  25 #include <asm/system.h>
  26
  27 void __init
  28 dig_setup (char **cmdline_p)
  29 {
  30         unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
  31
  32         /*
  33          * Default to /dev/sda2.  This assumes that the EFI partition
  34          * is physical disk 1 partition 1 and the Linux root disk is
  35          * physical disk 1 partition 2.
  36          */
  37         ROOT_DEV = Root_SDA2;           /* default to second partition on first drive */
  38
  39 #ifdef CONFIG_SMP
  40         init_smp_config();
  41 #endif
  42
  43         memset(&screen_info, 0, sizeof(screen_info));
  44
  45         if (!ia64_boot_param->console_info.num_rows
  46             || !ia64_boot_param->console_info.num_cols)
  47         {
  48                 printk(KERN_WARNING "dig_setup: warning: invalid screen-info, guessing 80x25\n");
  49                 orig_x = 0;
  50                 orig_y = 0;
  51                 num_cols = 80;
  52                 num_rows = 25;
  53                 font_height = 16;
  54         } else {
  55                 orig_x = ia64_boot_param->console_info.orig_x;
  56                 orig_y = ia64_boot_param->console_info.orig_y;
  57                 num_cols = ia64_boot_param->console_info.num_cols;
  58                 num_rows = ia64_boot_param->console_info.num_rows;
  59                 font_height = 400 / num_rows;
  60         }
  61
  62         screen_info.orig_x = orig_x;
  63         screen_info.orig_y = orig_y;
  64         screen_info.orig_video_cols  = num_cols;
  65         screen_info.orig_video_lines = num_rows;
  66         screen_info.orig_video_points = font_height;
  67         screen_info.orig_video_mode = 3;        /* XXX fake */
  68         screen_info.orig_video_isVGA = 1;       /* XXX fake */
  69         screen_info.orig_video_ega_bx = 3;      /* XXX fake */
  70 }