hw/misc/a9scu.c

2  * Cortex-A9MPCore Snoop Control Unit (SCU) emulation.
13 #include "hw/qdev-properties.h"
27         return s->control;  in a9_scu_read()
29         return (((1 << s->num_cpu) - 1) << 4) | (s->num_cpu - 1);  in a9_scu_read()
31         return s->status;  in a9_scu_read()
38     case 0x50: /* SCU Access Control Register */  in a9_scu_read()
39     case 0x54: /* SCU Non-secure Access Control Register */  in a9_scu_read()
55         s->control = value & 1;  in a9_scu_write()
60         s->status = value;  in a9_scu_write()
63         /* no-op as we do not implement caches */  in a9_scu_write()
69     case 0x50: /* SCU Access Control Register */  in a9_scu_write()
70     case 0x54: /* SCU Non-secure Access Control Register */  in a9_scu_write()
97     s->control = 0;  in a9_scu_reset()
105     if (!s->num_cpu || s->num_cpu > A9_SCU_CPU_MAX) {  in a9_scu_realize()
106         error_setg(errp, "Illegal CPU count: %u", s->num_cpu);  in a9_scu_realize()
110     memory_region_init_io(&s->iomem, OBJECT(s), &a9_scu_ops, s,  in a9_scu_realize()
111                           "a9-scu", 0x100);  in a9_scu_realize()
112     sysbus_init_mmio(sbd, &s->iomem);  in a9_scu_realize()
116     .name = "a9-scu",
127     DEFINE_PROP_UINT32("num-cpu", A9SCUState, num_cpu, 1),
136     dc->vmsd = &vmstate_a9_scu;  in a9_scu_class_init()
138     dc->realize = a9_scu_realize;  in a9_scu_class_init()