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/*
* Copyright (c) 2011, ARM Limited. All rights reserved.
*
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its
* contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*/
#include "misc.h"
#include "virt_helpers.h"
#include "bl.h"
extern void signal_switchover(void);
unsigned is_hvc()
{
return ((read_hsr() >> 26) == 0x12 ? TRUE : FALSE);
}
unsigned HandleHVC(vm_context * context)
{
unsigned opcode = read_hsr() & 0xffff;
unsigned rc = FALSE;
switch(opcode) {
/*
* HVC call to switch to the other cluster. This is done
* by sending a switchover IPI to all the cores in the cluster.
*/
case SYNC_SWITCHOVER:
signal_switchover();
rc = TRUE;
break;
/*
* HVC call to return the physical MPIDR
*/
case READ_MPIDR:
context->gp_regs[0] = read_mpidr();
rc = TRUE;
break;
default:
break;
}
return rc;
}
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