The FWNMI option must deliver system reset interrupts to their
registered address, and there are a few constraints on the handler
addresses specified in PAPR. Add the system reset address state and
checks.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <
20200316142613.121089-4-npiggin@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviwed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
spapr->cas_reboot = false;
+ spapr->fwnmi_system_reset_addr = -1;
spapr->fwnmi_machine_check_addr = -1;
spapr->fwnmi_machine_check_interlock = -1;
.needed = spapr_fwnmi_needed,
.pre_save = spapr_fwnmi_pre_save,
.fields = (VMStateField[]) {
+ VMSTATE_UINT64(fwnmi_system_reset_addr, SpaprMachineState),
VMSTATE_UINT64(fwnmi_machine_check_addr, SpaprMachineState),
VMSTATE_INT32(fwnmi_machine_check_interlock, SpaprMachineState),
VMSTATE_END_OF_LIST()
uint32_t nret, target_ulong rets)
{
hwaddr rtas_addr;
+ target_ulong sreset_addr, mce_addr;
if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_OFF) {
rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
return;
}
- spapr->fwnmi_machine_check_addr = rtas_ld(args, 1);
+ sreset_addr = rtas_ld(args, 0);
+ mce_addr = rtas_ld(args, 1);
+
+ /* PAPR requires these are in the first 32M of memory and within RMA */
+ if (sreset_addr >= 32 * MiB || sreset_addr >= spapr->rma_size ||
+ mce_addr >= 32 * MiB || mce_addr >= spapr->rma_size) {
+ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+ return;
+ }
+
+ spapr->fwnmi_system_reset_addr = sreset_addr;
+ spapr->fwnmi_machine_check_addr = mce_addr;
rtas_st(rets, 0, RTAS_OUT_SUCCESS);
}
/* State related to FWNMI option */
- /* Machine Check Notification Routine address
+ /* System Reset and Machine Check Notification Routine addresses
* registered by "ibm,nmi-register" RTAS call.
*/
+ target_ulong fwnmi_system_reset_addr;
target_ulong fwnmi_machine_check_addr;
/* Machine Check FWNMI synchronization, fwnmi_machine_check_interlock is