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/* ----------------------------------------------------------------------- *
*
* Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* shuffle_rm.c
*
* Shuffle and boot to protected mode code
*/
#include <stdlib.h>
#include <inttypes.h>
#include <com32.h>
#include <string.h>
#include <syslinux/movebits.h>
#include <syslinux/bootrm.h>
int syslinux_shuffle_boot_rm(struct syslinux_movelist *fraglist,
struct syslinux_memmap *memmap,
uint16_t bootflags,
struct syslinux_rm_regs *regs)
{
int nd;
com32sys_t ireg;
char *regbuf;
nd = syslinux_prepare_shuffle(fraglist, memmap);
if (nd < 0)
return -1;
regbuf = (char *)__com32.cs_bounce + (12*nd);
memcpy(regbuf, regs, sizeof(*regs));
memset(&ireg, 0, sizeof ireg);
ireg.eax.w[0] = 0x001b;
ireg.edx.w[0] = bootflags;
ireg.es = SEG(__com32.cs_bounce);
ireg.edi.l = OFFS(__com32.cs_bounce);
ireg.ecx.l = nd;
ireg.ds = SEG(regbuf);
ireg.esi.l = OFFS(regbuf);
__intcall(0x22, &ireg, NULL);
return -1; /* Too many descriptors? */
}
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