diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 258f73d..591f2f8 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -227,11 +227,10 @@
 -  ``ERRATA_A76_1275112``: This applies errata 1275112 workaround to Cortex-A76
    CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
 
-For Hercules, the following errata build flags are defined :
+For Cortex-A78, the following errata build flags are defined :
 
--  ``ERRATA_HERCULES_1688305``: This applies errata 1688305 workaround to
-   Hercules CPU. This needs to be enabled only for revision r0p0 - r1p0 of
-   the CPU.
+-  ``ERRATA_A78_1688305``: This applies errata 1688305 workaround to Cortex-A78
+   CPU. This needs to be enabled only for revision r0p0 - r1p0 of the CPU.
 
 For Neoverse N1, the following errata build flags are defined :
 
@@ -338,7 +337,7 @@
 
 --------------
 
-*Copyright (c) 2014-2019, Arm Limited and Contributors. All rights reserved.*
+*Copyright (c) 2014-2020, Arm Limited and Contributors. All rights reserved.*
 
 .. _CVE-2017-5715: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715
 .. _CVE-2018-3639: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3639
diff --git a/include/lib/cpus/aarch64/cortex_a78.h b/include/lib/cpus/aarch64/cortex_a78.h
index 563d668..0d4712b 100644
--- a/include/lib/cpus/aarch64/cortex_a78.h
+++ b/include/lib/cpus/aarch64/cortex_a78.h
@@ -4,31 +4,31 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef CORTEX_HERCULES_H
-#define CORTEX_HERCULES_H
+#ifndef CORTEX_A78_H
+#define CORTEX_A78_H
 
 #include <lib/utils_def.h>
 
-#define CORTEX_HERCULES_MIDR					U(0x410FD410)
+#define CORTEX_A78_MIDR					U(0x410FD410)
 
 /*******************************************************************************
  * CPU Extended Control register specific definitions.
  ******************************************************************************/
-#define CORTEX_HERCULES_CPUECTLR_EL1				S3_0_C15_C1_4
+#define CORTEX_A78_CPUECTLR_EL1				S3_0_C15_C1_4
 
 /*******************************************************************************
  * CPU Power Control register specific definitions
  ******************************************************************************/
-#define CORTEX_HERCULES_CPUPWRCTLR_EL1				S3_0_C15_C2_7
-#define CORTEX_HERCULES_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT	U(1)
+#define CORTEX_A78_CPUPWRCTLR_EL1				S3_0_C15_C2_7
+#define CORTEX_A78_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT	U(1)
 
 /*******************************************************************************
  * CPU Auxiliary Control register specific definitions.
  ******************************************************************************/
-#define CORTEX_HERCULES_ACTLR_TAM_BIT				(ULL(1) << 30)
+#define CORTEX_A78_ACTLR_TAM_BIT				(ULL(1) << 30)
 
-#define CORTEX_HERCULES_ACTLR2_EL1				S3_0_C15_C1_1
-#define CORTEX_HERCULES_ACTLR2_EL1_BIT_1			(ULL(1) << 1)
+#define CORTEX_A78_ACTLR2_EL1				S3_0_C15_C1_1
+#define CORTEX_A78_ACTLR2_EL1_BIT_1			(ULL(1) << 1)
 
 /*******************************************************************************
  * CPU Activity Monitor Unit register specific definitions.
@@ -38,7 +38,7 @@
 #define CPUAMCNTENCLR1_EL0					S3_3_C15_C3_0
 #define CPUAMCNTENSET1_EL0					S3_3_C15_C3_1
 
-#define CORTEX_HERCULES_AMU_GROUP0_MASK				U(0xF)
-#define CORTEX_HERCULES_AMU_GROUP1_MASK				U(0x7)
+#define CORTEX_A78_AMU_GROUP0_MASK				U(0xF)
+#define CORTEX_A78_AMU_GROUP1_MASK				U(0x7)
 
-#endif /* CORTEX_HERCULES_H */
+#endif /* CORTEX_A78_H */
diff --git a/lib/cpus/aarch64/cortex_a78.S b/lib/cpus/aarch64/cortex_a78.S
index 2293109..9914f12 100644
--- a/lib/cpus/aarch64/cortex_a78.S
+++ b/lib/cpus/aarch64/cortex_a78.S
@@ -13,30 +13,30 @@
 
 /* Hardware handled coherency */
 #if HW_ASSISTED_COHERENCY == 0
-#error "cortex_hercules must be compiled with HW_ASSISTED_COHERENCY enabled"
+#error "cortex_a78 must be compiled with HW_ASSISTED_COHERENCY enabled"
 #endif
 
 
 /* --------------------------------------------------
- * Errata Workaround for Hercules Erratum 1688305.
- * This applies to revision r0p0 and r1p0 of Hercules.
+ * Errata Workaround for A78 Erratum 1688305.
+ * This applies to revision r0p0 and r1p0 of A78.
  * Inputs:
  * x0: variant[4:7] and revision[0:3] of current cpu.
  * Shall clobber: x0-x17
  * --------------------------------------------------
  */
-func errata_hercules_1688305_wa
+func errata_a78_1688305_wa
 	/* Compare x0 against revision r1p0 */
 	mov	x17, x30
 	bl	check_errata_1688305
 	cbz	x0, 1f
-	mrs     x1, CORTEX_HERCULES_ACTLR2_EL1
-	orr	x1, x1, CORTEX_HERCULES_ACTLR2_EL1_BIT_1
-	msr     CORTEX_HERCULES_ACTLR2_EL1, x1
+	mrs     x1, CORTEX_A78_ACTLR2_EL1
+	orr	x1, x1, CORTEX_A78_ACTLR2_EL1_BIT_1
+	msr     CORTEX_A78_ACTLR2_EL1, x1
 	isb
 1:
 	ret	x17
-endfunc errata_hercules_1688305_wa
+endfunc errata_a78_1688305_wa
 
 func check_errata_1688305
 	/* Applies to r0p0 and r1p0 */
@@ -45,64 +45,64 @@
 endfunc check_errata_1688305
 
 	/* -------------------------------------------------
-	 * The CPU Ops reset function for Cortex-Hercules
+	 * The CPU Ops reset function for Cortex-A78
 	 * -------------------------------------------------
 	 */
-func cortex_hercules_reset_func
+func cortex_a78_reset_func
 	mov	x19, x30
 	bl	cpu_get_rev_var
 	mov	x18, x0
 
-#if ERRATA_HERCULES_1688305
+#if ERRATA_A78_1688305
 	mov     x0, x18
-	bl	errata_hercules_1688305_wa
+	bl	errata_a78_1688305_wa
 #endif
 
 #if ENABLE_AMU
 	/* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */
 	mrs	x0, actlr_el3
-	bic	x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT
+	bic	x0, x0, #CORTEX_A78_ACTLR_TAM_BIT
 	msr	actlr_el3, x0
 
 	/* Make sure accesses from non-secure EL0/EL1 are not trapped to EL2 */
 	mrs	x0, actlr_el2
-	bic	x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT
+	bic	x0, x0, #CORTEX_A78_ACTLR_TAM_BIT
 	msr	actlr_el2, x0
 
 	/* Enable group0 counters */
-	mov	x0, #CORTEX_HERCULES_AMU_GROUP0_MASK
+	mov	x0, #CORTEX_A78_AMU_GROUP0_MASK
 	msr	CPUAMCNTENSET0_EL0, x0
 
 	/* Enable group1 counters */
-	mov	x0, #CORTEX_HERCULES_AMU_GROUP1_MASK
+	mov	x0, #CORTEX_A78_AMU_GROUP1_MASK
 	msr	CPUAMCNTENSET1_EL0, x0
 #endif
 
 	isb
 	ret	x19
-endfunc cortex_hercules_reset_func
+endfunc cortex_a78_reset_func
 
 	/* ---------------------------------------------
 	 * HW will do the cache maintenance while powering down
 	 * ---------------------------------------------
 	 */
-func cortex_hercules_core_pwr_dwn
+func cortex_a78_core_pwr_dwn
 	/* ---------------------------------------------
 	 * Enable CPU power down bit in power control register
 	 * ---------------------------------------------
 	 */
-	mrs	x0, CORTEX_HERCULES_CPUPWRCTLR_EL1
-	orr	x0, x0, #CORTEX_HERCULES_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT
-	msr	CORTEX_HERCULES_CPUPWRCTLR_EL1, x0
+	mrs	x0, CORTEX_A78_CPUPWRCTLR_EL1
+	orr	x0, x0, #CORTEX_A78_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT
+	msr	CORTEX_A78_CPUPWRCTLR_EL1, x0
 	isb
 	ret
-endfunc cortex_hercules_core_pwr_dwn
+endfunc cortex_a78_core_pwr_dwn
 
 	/*
-	 * Errata printing function for cortex_hercules. Must follow AAPCS.
+	 * Errata printing function for cortex_a78. Must follow AAPCS.
 	 */
 #if REPORT_ERRATA
-func cortex_hercules_errata_report
+func cortex_a78_errata_report
 	stp	x8, x30, [sp, #-16]!
 
 	bl	cpu_get_rev_var
@@ -112,15 +112,15 @@
 	 * Report all errata. The revision-variant information is passed to
 	 * checking functions of each errata.
 	 */
-	report_errata ERRATA_HERCULES_1688305, cortex_hercules, 1688305
+	report_errata ERRATA_A78_1688305, cortex_a78, 1688305
 
 	ldp	x8, x30, [sp], #16
 	ret
-endfunc cortex_hercules_errata_report
+endfunc cortex_a78_errata_report
 #endif
 
 	/* ---------------------------------------------
-	 * This function provides cortex_hercules specific
+	 * This function provides cortex_a78 specific
 	 * register information for crash reporting.
 	 * It needs to return with x6 pointing to
 	 * a list of register names in ascii and
@@ -128,16 +128,16 @@
 	 * reported.
 	 * ---------------------------------------------
 	 */
-.section .rodata.cortex_hercules_regs, "aS"
-cortex_hercules_regs:  /* The ascii list of register names to be reported */
+.section .rodata.cortex_a78_regs, "aS"
+cortex_a78_regs:  /* The ascii list of register names to be reported */
 	.asciz	"cpuectlr_el1", ""
 
-func cortex_hercules_cpu_reg_dump
-	adr	x6, cortex_hercules_regs
-	mrs	x8, CORTEX_HERCULES_CPUECTLR_EL1
+func cortex_a78_cpu_reg_dump
+	adr	x6, cortex_a78_regs
+	mrs	x8, CORTEX_A78_CPUECTLR_EL1
 	ret
-endfunc cortex_hercules_cpu_reg_dump
+endfunc cortex_a78_cpu_reg_dump
 
-declare_cpu_ops cortex_hercules, CORTEX_HERCULES_MIDR, \
-	cortex_hercules_reset_func, \
-	cortex_hercules_core_pwr_dwn
+declare_cpu_ops cortex_a78, CORTEX_A78_MIDR, \
+	cortex_a78_reset_func, \
+	cortex_a78_core_pwr_dwn
diff --git a/lib/cpus/aarch64/cortex_hercules_ae.S b/lib/cpus/aarch64/cortex_hercules_ae.S
index c4a2163..4452c41 100644
--- a/lib/cpus/aarch64/cortex_hercules_ae.S
+++ b/lib/cpus/aarch64/cortex_hercules_ae.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, ARM Limited. All rights reserved.
+ * Copyright (c) 2019-2020, ARM Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -24,20 +24,20 @@
 func cortex_hercules_ae_reset_func
 	/* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */
 	mrs	x0, actlr_el3
-	bic	x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT
+	bic	x0, x0, #CORTEX_A78_ACTLR_TAM_BIT
 	msr	actlr_el3, x0
 
 	/* Make sure accesses from non-secure EL0/EL1 are not trapped to EL2 */
 	mrs	x0, actlr_el2
-	bic	x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT
+	bic	x0, x0, #CORTEX_A78_ACTLR_TAM_BIT
 	msr	actlr_el2, x0
 
 	/* Enable group0 counters */
-	mov	x0, #CORTEX_HERCULES_AMU_GROUP0_MASK
+	mov	x0, #CORTEX_A78_AMU_GROUP0_MASK
 	msr	CPUAMCNTENSET0_EL0, x0
 
 	/* Enable group1 counters */
-	mov	x0, #CORTEX_HERCULES_AMU_GROUP1_MASK
+	mov	x0, #CORTEX_A78_AMU_GROUP1_MASK
 	msr	CPUAMCNTENSET1_EL0, x0
 	isb
 
@@ -54,9 +54,9 @@
 	 * Enable CPU power down bit in power control register
 	 * -------------------------------------------------------
 	 */
-	mrs	x0, CORTEX_HERCULES_CPUPWRCTLR_EL1
-	orr	x0, x0, #CORTEX_HERCULES_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT
-	msr	CORTEX_HERCULES_CPUPWRCTLR_EL1, x0
+	mrs	x0, CORTEX_A78_CPUPWRCTLR_EL1
+	orr	x0, x0, #CORTEX_A78_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT
+	msr	CORTEX_A78_CPUPWRCTLR_EL1, x0
 	isb
 	ret
 endfunc cortex_hercules_ae_core_pwr_dwn
@@ -85,7 +85,7 @@
 
 func cortex_hercules_ae_cpu_reg_dump
 	adr	x6, cortex_hercules_ae_regs
-	mrs	x8, CORTEX_HERCULES_CPUECTLR_EL1
+	mrs	x8, CORTEX_A78_CPUECTLR_EL1
 	ret
 endfunc cortex_hercules_ae_cpu_reg_dump
 
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 3c0c9cd..1bc082d 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -251,8 +251,8 @@
 ERRATA_A76_1286807	?=0
 
 # Flag to apply erratum 1688305 workaround during reset. This erratum applies
-# to revisions r0p0 - r1p0 of the Hercules cpu.
-ERRATA_HERCULES_1688305	?=0
+# to revisions r0p0 - r1p0 of the A78 cpu.
+ERRATA_A78_1688305	?=0
 
 # Flag to apply T32 CLREX workaround during reset. This erratum applies
 # only to r0p0 and r1p0 of the Neoverse N1 cpu.
@@ -487,9 +487,9 @@
 $(eval $(call assert_boolean,ERRATA_A76_1286807))
 $(eval $(call add_define,ERRATA_A76_1286807))
 
-# Process ERRATA_HERCULES_1688305 flag
-$(eval $(call assert_boolean,ERRATA_HERCULES_1688305))
-$(eval $(call add_define,ERRATA_HERCULES_1688305))
+# Process ERRATA_A78_1688305 flag
+$(eval $(call assert_boolean,ERRATA_A78_1688305))
+$(eval $(call add_define,ERRATA_A78_1688305))
 
 # Process ERRATA_N1_1043202 flag
 $(eval $(call assert_boolean,ERRATA_N1_1043202))