diff options
author | Alex AUVOLAT <alex.auvolat@ens.fr> | 2014-03-28 09:10:23 +0100 |
---|---|---|
committer | Alex AUVOLAT <alex.auvolat@ens.fr> | 2014-03-28 09:10:23 +0100 |
commit | bb55beef914e7488350ad1d0419d4bc60ad63c99 (patch) | |
tree | b1cfe0e5c76cbca16e7e3c16e108c23e366a2902 /sos-code-article1/sos/main.c | |
download | SOS-bb55beef914e7488350ad1d0419d4bc60ad63c99.tar.gz SOS-bb55beef914e7488350ad1d0419d4bc60ad63c99.zip |
Import code for article1, 2, 3, 4
Diffstat (limited to 'sos-code-article1/sos/main.c')
-rw-r--r-- | sos-code-article1/sos/main.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/sos-code-article1/sos/main.c b/sos-code-article1/sos/main.c new file mode 100644 index 0000000..a5adb54 --- /dev/null +++ b/sos-code-article1/sos/main.c @@ -0,0 +1,69 @@ +/* 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; +} |