70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Copyright (C) 2004 The SOS Team
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Copyright (C) 1999 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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*/
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/* Include definitions of the multiboot standard */
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#include <bootstrap/multiboot.h>
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#include <sos/klibc.h>
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#include <sos/assert.h>
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#include <drivers/x86_videomem.h>
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#include <drivers/bochs.h>
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/* The C entry point of our operating system */
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void sos_main(unsigned long magic, unsigned long addr)
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{
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unsigned i;
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/* Grub sends us a structure, called multiboot_info_t with a lot of
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precious informations about the system, see the multiboot
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documentation for more information. */
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multiboot_info_t *mbi;
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mbi = (multiboot_info_t *) addr;
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/* Setup bochs and console, and clear the console */
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sos_bochs_setup();
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sos_x86_videomem_setup();
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sos_x86_videomem_cls(SOS_X86_VIDEO_BG_BLUE);
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/* Greetings from SOS */
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if (magic == MULTIBOOT_BOOTLOADER_MAGIC)
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/* Loaded with Grub */
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sos_x86_videomem_printf(1, 0,
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SOS_X86_VIDEO_FG_YELLOW | SOS_X86_VIDEO_BG_BLUE,
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"Welcome From GRUB to %s%c RAM is %dMB (upper mem = 0x%x kB)",
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"SOS", ',',
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(unsigned)(mbi->mem_upper >> 10) + 1,
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(unsigned)mbi->mem_upper);
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else
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/* Not loaded with grub */
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sos_x86_videomem_printf(1, 0,
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SOS_X86_VIDEO_FG_YELLOW | SOS_X86_VIDEO_BG_BLUE,
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"Welcome to SOS");
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sos_bochs_putstring("Message in a bochs\n");
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/* An operatig system never ends */
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for (;;)
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continue;
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return;
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}
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