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Diffstat (limited to 'i386/pc/i16/i16_init.c')
-rw-r--r-- | i386/pc/i16/i16_init.c | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/i386/pc/i16/i16_init.c b/i386/pc/i16/i16_init.c deleted file mode 100644 index 23a51df5..00000000 --- a/i386/pc/i16/i16_init.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright (c) 1995-1994 The University of Utah and - * the Computer Systems Laboratory at the University of Utah (CSL). - * All rights reserved. - * - * Permission to use, copy, modify and distribute this software is hereby - * granted provided that (1) source code retains these copyright, permission, - * and disclaimer notices, and (2) redistributions including binaries - * reproduce the notices in supporting documentation, and (3) all advertising - * materials mentioning features or use of this software display the following - * acknowledgement: ``This product includes software developed by the - * Computer Systems Laboratory at the University of Utah.'' - * - * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS - * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF - * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * CSL requests users of this software to return to csl-dist@cs.utah.edu any - * improvements that they make and grant CSL redistribution rights. - * - * Author: Bryan Ford, University of Utah CSL - */ - -#include <mach/machine/code16.h> -#include <mach/machine/proc_reg.h> - -#include "vm_param.h" - - -/* Code segment we originally had when we started in real mode. */ -unsigned short real_cs; - -/* Virtual address of physical memory. */ -vm_offset_t phys_mem_va; - -/* Physical address of start of boot image. */ -vm_offset_t boot_image_pa; - -/* Upper limit of known physical memory. */ -vm_offset_t phys_mem_max; - - -CODE16 - -#include "i16_bios.h" - -/* Called by i16_crt0 (or the equivalent) - to set up our basic 16-bit runtime environment - before calling i16_main(). */ -void i16_init(void) -{ - /* Find our code/data/everything segment. */ - real_cs = get_cs(); - - /* Find out where in physical memory we got loaded. */ - boot_image_pa = real_cs << 4; - - /* Find out where the bottom of physical memory is. - (We won't be able to directly use it for 32-bit accesses - until we actually get into 32-bit mode.) */ - phys_mem_va = -boot_image_pa; - - /* The base of linear memory is at the same place, - at least until we turn paging on. */ - linear_base_va = phys_mem_va; -} - |