| /* |
| * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. |
| * |
| * 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 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER ); |
| |
| #include <stdint.h> |
| #include <realmode.h> |
| #include <bios.h> |
| #include <basemem.h> |
| #include <gpxe/hidemem.h> |
| |
| /** @file |
| * |
| * Base memory allocation |
| * |
| */ |
| |
| /** |
| * Set the BIOS free base memory counter |
| * |
| * @v new_fbms New free base memory counter (in kB) |
| */ |
| void set_fbms ( unsigned int new_fbms ) { |
| uint16_t fbms = new_fbms; |
| |
| /* Update the BIOS memory counter */ |
| put_real ( fbms, BDA_SEG, BDA_FBMS ); |
| |
| /* Update our hidden memory region map */ |
| hide_basemem(); |
| } |
