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/*
* Copyright (C) 2005 IBM Corporation
*
* Authors:
* Reiner Sailer, <sailer@watson.ibm.com>
* Stefan Berger, <stefanb@watson.ibm.com>
*
* Contributors:
* Michael LeMay, <mdlemay@epoch.ncsc.mil>
* George Coker, <gscoker@alpha.ncsc.mil>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2,
* as published by the Free Software Foundation.
*
*
* This file contains the XSM policy init functions for Xen.
*
*/
#include <xsm/xsm.h>
#include <xen/multiboot.h>
#include <xen/bitops.h>
char *__initdata policy_buffer = NULL;
u32 __initdata policy_size = 0;
int __init xsm_policy_init(unsigned long *module_map,
const multiboot_info_t *mbi,
void *(*bootstrap_map)(const module_t *))
{
int i;
module_t *mod = (module_t *)__va(mbi->mods_addr);
int rc = 0;
u32 *_policy_start;
unsigned long _policy_len;
/*
* Try all modules and see whichever could be the binary policy.
* Adjust module_map for the module that is the binary policy.
*/
for ( i = mbi->mods_count-1; i >= 1; i-- )
{
if ( !test_bit(i, module_map) )
continue;
_policy_start = bootstrap_map(mod + i);
_policy_len = mod[i].mod_end;
if ( (xsm_magic_t)(*_policy_start) == XSM_MAGIC )
{
policy_buffer = (char *)_policy_start;
policy_size = _policy_len;
printk("Policy len 0x%lx, start at %p.\n",
_policy_len,_policy_start);
__clear_bit(i, module_map);
break;
}
bootstrap_map(NULL);
}
return rc;
}
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