if (of_flat_dt_is_compatible(node, "ibm,opal-v3")) {
powerpc_firmware_features |= FW_FEATURE_OPALv2;
powerpc_firmware_features |= FW_FEATURE_OPALv3;
- printk("OPAL V3 detected !\n");
+ pr_info("OPAL V3 detected !\n");
} else if (of_flat_dt_is_compatible(node, "ibm,opal-v2")) {
powerpc_firmware_features |= FW_FEATURE_OPALv2;
- printk("OPAL V2 detected !\n");
+ pr_info("OPAL V2 detected !\n");
} else {
- printk("OPAL V1 detected !\n");
+ pr_info("OPAL V1 detected !\n");
}
/* Reinit all cores with the right endian */
* 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