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/******************************************************************************
* kernel.c
*
* This file should contain architecture-independent bootstrap and low-level
* help routines. It's a bit x86/PC specific right now!
*
* Copyright (c) 2002-2003 K A Fraser
*/
#include <xen/config.h>
#include <xen/init.h>
#include <xen/lib.h>
#include <xen/errno.h>
#include <xen/compile.h>
#include <xen/sched.h>
#include <asm/current.h>
void cmdline_parse(char *cmdline)
{
char opt[100], *optval, *p = cmdline, *q;
struct kernel_param *param;
if ( p == NULL )
return;
/* Skip whitespace and the image name. */
while ( *p == ' ' )
p++;
if ( (p = strchr(p, ' ')) == NULL )
return;
for ( ; ; )
{
/* Skip whitespace. */
while ( *p == ' ' )
p++;
if ( *p == '\0' )
break;
/* Grab the next whitespace-delimited option. */
q = opt;
while ( (*p != ' ') && (*p != '\0') )
*q++ = *p++;
*q = '\0';
/* Search for value part of a key=value option. */
optval = strchr(opt, '=');
if ( optval != NULL )
*optval++ = '\0';
for ( param = &__setup_start; param != &__setup_end; param++ )
{
if ( strcmp(param->name, opt ) != 0 )
continue;
switch ( param->type )
{
case OPT_STR:
if ( optval != NULL )
{
strncpy(param->var, optval, param->len);
((char *)param->var)[param->len-1] = '\0';
}
break;
case OPT_UINT:
if ( optval != NULL )
*(unsigned int *)param->var =
simple_strtol(optval, (char **)&optval, 0);
break;
case OPT_BOOL:
*(int *)param->var = 1;
break;
case OPT_CUSTOM:
if ( optval != NULL )
((void (*)(char *))param->var)(optval);
break;
}
}
}
}
/*
* Simple hypercalls.
*/
long do_xen_version(int cmd)
{
if ( cmd != 0 )
return -ENOSYS;
return (XEN_VERSION<<16) | (XEN_SUBVERSION);
}
long do_vm_assist(unsigned int cmd, unsigned int type)
{
return vm_assist(current->domain, cmd, type);
}
long do_ni_hypercall(void)
{
/* No-op hypercall. */
return -ENOSYS;
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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