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src/arch/x86/interface/pcbios/basemem.c
51 строка
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Michael Brown
[bios] Describe umalloc() heap as an in-use memory area
16 май 2025, 18:18
16 май 2025, 18:18
3812860
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/* * 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., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. * * You can also choose to distribute this program under the terms of * the Unmodified Binary Distribution Licence (as given in the file * COPYING.UBDL), provided that you have satisfied its requirements. */ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> #include <realmode.h> #include <bios.h> #include <basemem.h> #include <ipxe/memmap.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(); }