ERRIDR, Error Record ID Register
The ERRIDR characteristics are:
Purpose
Defines the highest numbered index of the error records that can be accessed through the Error Record System registers.
Configuration
AArch32 System register ERRIDR bits [31:0] are architecturally mapped to AArch64 System register ERRIDR_EL1[31:0] .
This register is present only when RAS is implemented. Otherwise, direct accesses to ERRIDR are UNDEFINED.
Attributes
ERRIDR is a 32-bit register.
Field descriptions
The ERRIDR bit assignments are:
Bits [31:16]
Reserved, RES0.
NUM, bits [15:0]
Highest numbered index of the records that can be accessed through the Error Record System registers plus one. Zero indicates that no records can be accessed through the Error Record System registers.
Each implemented record is owned by a node. A node might own multiple records.
Accessing the ERRIDR
Accesses to this register use the following encodings:
MRC{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}
coproc | opc1 | CRn | CRm | opc2 |
---|---|---|---|---|
0b1111 | 0b000 | 0b0101 | 0b0011 | 0b000 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && !ELUsingAArch32(EL2) && HSTR_EL2.T5 == '1' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HSTR.T5 == '1' then AArch32.TakeHypTrapException(0x03); elsif EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TERR == '1' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR2.TERR == '1' then AArch32.TakeHypTrapException(0x03); elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.AArch32SystemAccessTrap(EL3, 0x03); elsif HaveEL(EL3) && ELUsingAArch32(EL3) && PSTATE.M != M32_Monitor && SCR.TERR == '1' then AArch32.TakeMonitorTrapException(); else return ERRIDR; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.AArch32SystemAccessTrap(EL3, 0x03); elsif HaveEL(EL3) && ELUsingAArch32(EL3) && SCR.TERR == '1' then AArch32.TakeMonitorTrapException(); else return ERRIDR; elsif PSTATE.EL == EL3 then if PSTATE.M != M32_Monitor && SCR.TERR == '1' then AArch32.TakeMonitorTrapException(); else return ERRIDR;