RVBAR_EL2

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RVBAR_EL2, Reset Vector Base Address Register (if EL3 not implemented)

Purpose

If EL2 is the highest Exception level implemented, contains the IMPLEMENTATION DEFINED address that execution starts from after reset when executing in AArch64 state.

Configuration

This register is present only when the highest implemented Exception level is EL2 and FEAT_AA64 is implemented. Otherwise, direct accesses to RVBAR_EL2 are UNDEFINED.

Attributes

Field descriptions

ResetAddress, bits [63:0]

The IMPLEMENTATION DEFINED address that execution starts from after reset when executing in 64-bit state. Bits[1:0] of this register are 00, as this address must be aligned, and the address must be within the physical address size supported by the PE.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

Accessing RVBAR_EL2

Accesses to this register use the following encodings in the System register encoding space:

MRS <Xt>, RVBAR_EL2

op0	op1	CRn	CRm	op2
0b11	0b100	0b1100	0b0000	0b001

if !(IsHighestEL(EL2) && IsFeatureImplemented(FEAT_AA64)) then Undefined(); elsif PSTATE.EL == EL1 && IsHighestEL(EL2) && EffectiveHCR_EL2_NVx() IN {'xx1'} then AArch64_SystemAccessTrap(EL2, 0x18); elsif PSTATE.EL == EL2 && IsHighestEL(EL2) then X{64}(t) = RVBAR_EL2(); else Undefined(); end;

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ResetAddress
ResetAddress