static int __init opal_register_exception_handlers(void)
{
#ifdef __BIG_ENDIAN__
u64 glue;
if (!(powerpc_firmware_features & FW_FEATURE_OPAL))
return -ENODEV;
/* Hookup some exception handlers except machine check. We use the
* fwnmi area at 0x7000 to provide the glue space to OPAL
*/
glue = 0x7000;
opal_register_exception_handler(OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
0, glue);
glue += 128;
opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
#endif
return 0;
}
static int __init opal_register_exception_handlers(void)
{
u64 glue;
if (!(powerpc_firmware_features & FW_FEATURE_OPAL))
return -ENODEV;
/* Hookup some exception handlers. We use the fwnmi area at 0x7000
* to provide the glue space to OPAL
*/
glue = 0x7000;
opal_register_exception_handler(OPAL_MACHINE_CHECK_HANDLER,
__pa(opal_mc_secondary_handler[0]),
glue);
glue += 128;
opal_register_exception_handler(OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
0, glue);
glue += 128;
opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
return 0;
}
static int __init opal_register_exception_handlers(void)
{
#ifdef __BIG_ENDIAN__
u64 glue;
if (!(powerpc_firmware_features & FW_FEATURE_OPAL))
return -ENODEV;
/* Hookup some exception handlers except machine check. We use the
* fwnmi area at 0x7000 to provide the glue space to OPAL
*/
glue = 0x7000;
/*
* Check if we are running on newer firmware that exports
* OPAL_HANDLE_HMI token. If yes, then don't ask OPAL to patch
* the HMI interrupt and we catch it directly in Linux.
*
* For older firmware (i.e currently released POWER8 System Firmware
* as of today <= SV810_087), we fallback to old behavior and let OPAL
* patch the HMI vector and handle it inside OPAL firmware.
*
* For newer firmware (in development/yet to be released) we will
* start catching/handling HMI directly in Linux.
*/
if (!opal_check_token(OPAL_HANDLE_HMI)) {
pr_info("opal: Old firmware detected, OPAL handles HMIs.\n");
opal_register_exception_handler(
OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
0, glue);
glue += 128;
}
opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
#endif
return 0;
}
