/* See ARMv7a arch spec section C10.8 */
#define CPUDBG_AUTHSTATUS 0xFB8
+/* See ARMv7a arch spec DDI 0406C C11.10 */
+#define CPUDBG_ID_PFR1 0xD24
+
/* Masks for Vector Catch register */
#define DBG_VCR_FIQ_MASK ((1 << 31) | (1 << 7))
#define DBG_VCR_IRQ_MASK ((1 << 30) | (1 << 6))
int i;
int retval = ERROR_OK;
- uint32_t didr, cpuid, dbg_osreg;
+ uint32_t didr, cpuid, dbg_osreg, dbg_idpfr1;
/* Search for the APB-AP - it is needed for access to debug registers */
retval = dap_find_ap(swjdp, AP_TYPE_APB_AP, &armv7a->debug_ap);
}
}
- armv7a->arm.core_type = ARM_CORE_TYPE_SEC_EXT;
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_ID_PFR1, &dbg_idpfr1);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (dbg_idpfr1 & 0x000000f0) {
+ LOG_DEBUG("target->coreid %" PRId32 " has security extensions",
+ target->coreid);
+ armv7a->arm.core_type = ARM_CORE_TYPE_SEC_EXT;
+ }
/* Avoid recreating the registers cache */
if (!target_was_examined(target)) {