2007-10-31 Robert Millan <rmh@aybabtu.com>

* configure.ac: Add `i386-linuxbios' to the list of supported targets.

	* conf/i386-linuxbios.rmk: New file.

	* kern/i386/pc/hardware.c: Likewise.
	* term/i386/pc/at_keyboard.c: Likewise.
	* term/i386/pc/vga_text.c: Likewise.

	* include/grub/i386/linuxbios/boot.h: Likewise.
	* include/grub/i386/linuxbios/console.h: Likewise.
	* include/grub/i386/linuxbios/init.h: Likewise.
	* include/grub/i386/linuxbios/kernel.h: Likewise.
	* include/grub/i386/linuxbios/loader.h: Likewise.
	* include/grub/i386/linuxbios/memory.h: Likewise.
	* include/grub/i386/linuxbios/serial.h: Likewise.
	* include/grub/i386/linuxbios/time.h: Likewise.

	* kern/i386/linuxbios/init.c: Likewise.
	* kern/i386/linuxbios/startup.S: Likewise.
	* kern/i386/linuxbios/table.c: Likewise.

term/i386/pc/vga_text.c

@@ -0,0 +1,111 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2007  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/machine/console.h>
+#include <grub/types.h>
+
+#define COLS	80
+#define ROWS	25
+
+static int grub_curr_x, grub_curr_y;
+
+#define VGA_TEXT_SCREEN		0xb8000
+
+static void
+screen_write_char (int x, int y, short c)
+{
+  ((short *) VGA_TEXT_SCREEN)[y * COLS + x] = c;
+}
+
+static short
+screen_read_char (int x, int y)
+{
+  return ((short *) VGA_TEXT_SCREEN)[y * COLS + x];
+}
+
+static void
+inc_y ()
+{
+  grub_curr_x = 0;
+  if (grub_curr_y < ROWS - 1)
+    grub_curr_y++;
+  else
+    {
+      int x, y;
+      for (y = 0; y < ROWS; y++)
+        for (x = 0; x < COLS; x++)
+          screen_write_char (x, y, screen_read_char (x, y + 1));
+    }
+}
+
+static void
+inc_x ()
+{
+  if (grub_curr_x >= COLS - 2)
+    inc_y ();
+  else
+    grub_curr_x++;
+}
+
+void
+grub_console_real_putchar (int c)
+{
+  switch (c)
+    {
+      case '\b':
+	if (grub_curr_x != 0)
+	  screen_write_char (grub_curr_x--, grub_curr_y, ' ');
+	break;
+      case '\n':
+	inc_y ();
+	break;
+      case '\r':
+	grub_curr_x = 0;
+	break;
+      default:
+	screen_write_char (grub_curr_x, grub_curr_y, c | (grub_console_cur_color << 8));
+	inc_x ();
+    }
+}
+
+grub_uint16_t
+grub_console_getxy ()
+{
+  return (grub_curr_x << 8) | grub_curr_y;
+}
+
+void
+grub_console_gotoxy (grub_uint8_t x, grub_uint8_t y)
+{
+  grub_curr_x = x;
+  grub_curr_y = y;
+}
+
+void
+grub_console_cls ()
+{
+  int i;
+  for (i = 0; i < ROWS * COLS; i++)
+    ((short *) VGA_TEXT_SCREEN)[i] = ' ';
+}
+
+void
+grub_console_setcursor (int on __attribute__ ((unused)))
+{
+  /* Not implemented.  */
+}