70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
|
/* Copyright (C) 2004 The SOS Team
|
||
|
Copyright (C) 1999 Free Software Foundation, Inc.
|
||
|
|
||
|
This program 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 2
|
||
|
of the License, or (at your option) any later version.
|
||
|
|
||
|
This program 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 this program; if not, write to the Free Software
|
||
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||
|
USA.
|
||
|
*/
|
||
|
|
||
|
/* Include definitions of the multiboot standard */
|
||
|
#include <bootstrap/multiboot.h>
|
||
|
#include <sos/klibc.h>
|
||
|
#include <sos/assert.h>
|
||
|
#include <drivers/x86_videomem.h>
|
||
|
#include <drivers/bochs.h>
|
||
|
|
||
|
|
||
|
|
||
|
/* The C entry point of our operating system */
|
||
|
void sos_main(unsigned long magic, unsigned long addr)
|
||
|
{
|
||
|
unsigned i;
|
||
|
|
||
|
/* Grub sends us a structure, called multiboot_info_t with a lot of
|
||
|
precious informations about the system, see the multiboot
|
||
|
documentation for more information. */
|
||
|
multiboot_info_t *mbi;
|
||
|
mbi = (multiboot_info_t *) addr;
|
||
|
|
||
|
/* Setup bochs and console, and clear the console */
|
||
|
sos_bochs_setup();
|
||
|
|
||
|
sos_x86_videomem_setup();
|
||
|
sos_x86_videomem_cls(SOS_X86_VIDEO_BG_BLUE);
|
||
|
|
||
|
/* Greetings from SOS */
|
||
|
if (magic == MULTIBOOT_BOOTLOADER_MAGIC)
|
||
|
/* Loaded with Grub */
|
||
|
sos_x86_videomem_printf(1, 0,
|
||
|
SOS_X86_VIDEO_FG_YELLOW | SOS_X86_VIDEO_BG_BLUE,
|
||
|
"Welcome From GRUB to %s%c RAM is %dMB (upper mem = 0x%x kB)",
|
||
|
"SOS", ',',
|
||
|
(unsigned)(mbi->mem_upper >> 10) + 1,
|
||
|
(unsigned)mbi->mem_upper);
|
||
|
else
|
||
|
/* Not loaded with grub */
|
||
|
sos_x86_videomem_printf(1, 0,
|
||
|
SOS_X86_VIDEO_FG_YELLOW | SOS_X86_VIDEO_BG_BLUE,
|
||
|
"Welcome to SOS");
|
||
|
|
||
|
sos_bochs_putstring("Message in a bochs\n");
|
||
|
|
||
|
|
||
|
/* An operatig system never ends */
|
||
|
for (;;)
|
||
|
continue;
|
||
|
|
||
|
return;
|
||
|
}
|