37  * Convert index into secure priority using the platform-defined priority bits
47 /* Returns whether given priority is in secure priority range */
96  * This API is expected to be invoked before restoring context (Secure or
97  * Non-secure) in preparation for the respective dispatch.
163  * This API is expected to be invoked after saving context (Secure or
164  * Non-secure), having concluded the respective dispatch.
221  * After leaving Non-secure world, stash current Non-secure Priority Mask, and
222  * set Priority Mask to the highest Non-secure priority so that Non-secure
223  * interrupts cannot preempt Secure execution.
225  * If the current running priority is in the secure range, or if there are
236 	/* If the running priority is in the secure range, do nothing */  in ehf_exited_normal_world()
250 	/* The previous Priority Mask is not expected to be in secure range */  in ehf_exited_normal_world()
252 		ERROR("Priority Mask (0x%x) already in secure range\n",  in ehf_exited_normal_world()
264  * Conclude Secure execution and prepare for return to Non-secure world. Restore
265  * the Non-secure Priority Mask previously stashed upon leaving Non-secure
268  * If there the current running priority is in the secure range, or if there are
279 	/* If the running priority is in the secure range, do nothing */  in ehf_entering_normal_world()
298 	 * When exiting secure world, the current Priority Mask must be  in ehf_entering_normal_world()
299 	 * GIC_HIGHEST_NS_PRIORITY (as set during entry), or the Non-secure  in ehf_entering_normal_world()
316  * Program Priority Mask to the original Non-secure priority such that
317  * Non-secure interrupts may preempt Secure execution (for example, during
321  * This API is expected to be invoked before delegating a yielding SMC to Secure
322  * EL1. I.e. within the window of secure execution after Non-secure context is
323  * saved (after entry into EL3) and Secure context is restored (before entering
324  * Secure EL1).
333 	 * We should have been notified earlier of entering secure world, and  in ehf_allow_ns_preemption()
334 	 * therefore have stashed the Non-secure priority mask.  in ehf_allow_ns_preemption()
362  * Return whether Secure execution has explicitly allowed Non-secure interrupts
370 	/* If running priority is in secure range, return false */  in ehf_is_ns_preemption_allowed()
376 	 * If Non-secure preemption was permitted by calling  in ehf_is_ns_preemption_allowed()
380 	 * - We would have cleared the stashed the Non-secure Priority Mask.  in ehf_is_ns_preemption_allowed()
423 	/* Check EL3 interrupt priority is in secure range */  in ehf_el3_interrupt_handler()
472 	 * Bit 7 of GIC priority must be 0 for secure interrupts. This means  in ehf_init()
478 	/* Route EL3 interrupts when in Secure and Non-secure. */  in ehf_init()
480 	set_interrupt_rm_flag(flags, SECURE);  in ehf_init()