A METHOD OF AND CIRCUITRY FOR CONTROLLING ACCESS BY A MASTER TO A PERIPHERAL, A METHOD OF CONFIGURING SUCH CIRCUITRY, AND ASSOCIATED COMPUTER PROGRAM PRODUCTS

摘要

A method (4000) of controlling access by a master to a peripheral is described. The method comprises receiving one or more interrupt priority levels from one or more interrupt controllers associated with the peripheral, comparing the one or more interrupt priority level with respective one or more pre-established interrupt access levels to obtain an interrupt level comparison result, establishing whether an access condition is satisfied in dependence on at least the interrupt level comparison result, and if the access condition is satisfied, granting access. If the access condition is not satisfied, access is denied. Further, a circuitry is described (UC1 ) comprising one or more masters (CPU, CPU1, CPU2), one or more peripherals (PER0, PER1, PER2), and an access control circuitry (CIRC1; CIRC2) comprising one or more interrupt controllers (INTC) associated with the one or more peripherals. The access control circuitry is arranged to perform a method of controlling access by a master of the one or more masters to a peripheral of the one or more peripherals. Also described is a device having such circuitry, a method of configuring such circuitry, and associated computer program products.