arch/all-native/bootconsole/common.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Common console output functions.
   6 */
   7
   8 #include <aros/multiboot.h>
   9
  10 #include <bootconsole.h>
  11 #include <stdarg.h>
  12 #include <string.h>
  13
  14 #include "console.h"
  15
  16 /* Screen type */
  17 __attribute__((section(".data"))) unsigned char scr_Type = SCR_UNKNOWN;
  18
  19 __attribute__((section(".data"))) static unsigned char use_serial = 0;
  20
  21 void con_InitVESA(unsigned short version, struct vbe_mode *mode)
  22 {
  23     scr_FrameBuffer = (version >= 0x0200) ? (void *)(unsigned long)mode->phys_base : NULL;
  24
  25     if (mode->mode_attributes & VM_GRAPHICS)
  26     {
  27         unsigned int pitch;
  28
  29         scr_Type = SCR_GFX;
  30
  31         /* Use 3.0-specific field if available */
  32         if ((mode->mode_attributes & VM_LINEAR_FB) && (version >= 0x0300))
  33             pitch = mode->linear_bytes_per_scanline;
  34         else
  35             pitch = mode->bytes_per_scanline;
  36
  37         fb_Init(mode->x_resolution, mode->y_resolution, mode->bits_per_pixel, pitch);
  38     }
  39     else
  40     {
  41         scr_Type   = SCR_TEXT;
  42         scr_Width  = mode->x_resolution;
  43         scr_Height = mode->y_resolution;
  44
  45         /* CHECKME: is it correct? It should fall back to VGA buffer address for text modes */
  46         if (!scr_FrameBuffer)
  47             scr_FrameBuffer = (void *)((unsigned long)mode->win_b_segment << 16);
  48         /*
  49          * QEmu in text mode (VBE number 0x03) is known to supply neither phys_base nor
  50          * window segments (all three are NULLs). This is a workaround for this.
  51          */
  52         if (!scr_FrameBuffer)
  53             scr_FrameBuffer = VGA_TEXT_ADDR;
  54
  55         txt_Clear();
  56     }
  57
  58     /* We must have valid framebuffer address here */
  59     if (!scr_FrameBuffer)
  60         scr_Type = SCR_UNKNOWN;
  61 }
  62
  63 void con_InitVGA(void)
  64 {
  65     scr_Type        = SCR_TEXT;
  66     scr_FrameBuffer = VGA_TEXT_ADDR;
  67     scr_Width       = VGA_TEXT_WIDTH;
  68     scr_Height      = VGA_TEXT_HEIGHT;
  69
  70     txt_Clear();
  71 }
  72
  73 void con_InitSerial(char *cmdline)
  74 {
  75     char *opts = strstr(cmdline, "debug=serial");
  76
  77     if (opts)
  78     {
  79         use_serial = 1;
  80
  81         serial_Init(&opts[12]);
  82     }
  83     else
  84         use_serial = 0;
  85 }
  86
  87 void con_Putc(char c)
  88 {
  89     /* 0x03 character shuts off boot-time screen console */
  90     if (c == 0x03)
  91     {
  92         scr_Type = SCR_UNKNOWN;
  93         return;
  94     }
  95
  96     if (use_serial)
  97         serial_Putc(c);
  98
  99     switch (scr_Type)
 100     {
 101     case SCR_TEXT:
 102         txt_Putc(c);
 103         break;
 104
 105     case SCR_GFX:
 106         fb_Putc(c);
 107         break;
 108     }
 109 }