diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 7f87690e74b3..cd6820f6e819 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -201,8 +201,6 @@
 #define SYS_ID_AA64AFR0_EL1		sys_reg(3, 0, 0, 5, 4)
 #define SYS_ID_AA64AFR1_EL1		sys_reg(3, 0, 0, 5, 5)
 
-#define SYS_ID_AA64ISAR2_EL1		sys_reg(3, 0, 0, 6, 2)
-
 #define SYS_ID_AA64MMFR0_EL1		sys_reg(3, 0, 0, 7, 0)
 #define SYS_ID_AA64MMFR1_EL1		sys_reg(3, 0, 0, 7, 1)
 #define SYS_ID_AA64MMFR2_EL1		sys_reg(3, 0, 0, 7, 2)
@@ -699,31 +697,6 @@
 /* Position the attr at the correct index */
 #define MAIR_ATTRIDX(attr, idx)		((attr) << ((idx) * 8))
 
-/* id_aa64isar2 */
-#define ID_AA64ISAR2_EL1_BC_SHIFT		28
-#define ID_AA64ISAR2_EL1_APA3_SHIFT		12
-#define ID_AA64ISAR2_EL1_GPA3_SHIFT		8
-#define ID_AA64ISAR2_EL1_RPRES_SHIFT	4
-#define ID_AA64ISAR2_EL1_WFxT_SHIFT		0
-
-/*
- * Value 0x1 has been removed from the architecture, and is
- * reserved, but has not yet been removed from the ARM ARM
- * as of ARM DDI 0487G.b.
- */
-#define ID_AA64ISAR2_EL1_WFxT_NI		0x0
-#define ID_AA64ISAR2_EL1_WFxT_IMP		0x2
-
-#define ID_AA64ISAR2_EL1_APA3_NI			0x0
-#define ID_AA64ISAR2_EL1_APA3_PAuth			0x1
-#define ID_AA64ISAR2_EL1_APA3_EPAC			0x2
-#define ID_AA64ISAR2_EL1_APA3_PAuth2			0x3
-#define ID_AA64ISAR2_EL1_APA3_FPAC			0x4
-#define ID_AA64ISAR2_EL1_APA3_FPACCOMBINE		0x5
-
-#define ID_AA64ISAR2_EL1_GPA3_NI			0x0
-#define ID_AA64ISAR2_EL1_GPA3_IMP			0x1
-
 /* id_aa64pfr0 */
 #define ID_AA64PFR0_CSV3_SHIFT		60
 #define ID_AA64PFR0_CSV2_SHIFT		56
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 164221177079..da5e925bf624 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -193,8 +193,41 @@ Enum	3:0	DPB
 	0b0010	DPB2
 EndEnum
 EndSysreg
+
+Sysreg	ID_AA64ISAR2_EL1	3	0	0	6	2
+Res0	63:28
+Enum	27:24	PAC_frac
+	0b0000	NI
 	0b0001	IMP
 EndEnum
+Enum	23:20	BC
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Enum	19:16	MOPS
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Enum	15:12	APA3
+	0b0000	NI
+	0b0001	PAuth
+	0b0010	EPAC
+	0b0011	PAuth2
+	0b0100	FPAC
+	0b0101	FPACCOMBINE
+EndEnum
+Enum	11:8	GPA3
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Enum	7:4	RPRES
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Enum	3:0	WFxT
+	0b0000	NI
+	0b0010	IMP
+EndEnum
 EndSysreg
 
 Sysreg	SCTLR_EL1	3	0	1	0	0