Merge changes from topic "lw/n1_errata_fixes" into integration

* changes:
  Removing redundant ISB instructions
  Workaround for Neoverse N1 erratum 1275112
  Workaround for Neoverse N1 erratum 1262888
  Workaround for Neoverse N1 erratum 1262606
  Workaround for Neoverse N1 erratum 1257314
  Workaround for Neoverse N1 erratum 1220197
  Workaround for Neoverse N1 erratum 1207823
  Workaround for Neoverse N1 erratum 1165347
  Workaround for Neoverse N1 erratum 1130799
  Workaround for Neoverse N1 erratum 1073348

4 files changed, 407 insertions, 6 deletions

diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 6b524c24c..d3fe89d62 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -226,6 +226,35 @@ For Cortex-A76, the following errata build flags are defined :
 -  ``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 Neoverse N1, the following errata build flags are defined :
+
+-  ``ERRATA_N1_1073348``: This applies errata 1073348 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision r0p0 and r1p0 of the CPU.
+
+-  ``ERRATA_N1_1130799``: This applies errata 1130799 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
+
+-  ``ERRATA_N1_1165347``: This applies errata 1165347 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
+
+-  ``ERRATA_N1_1207823``: This applies errata 1207823 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
+
+-  ``ERRATA_N1_1220197``: This applies errata 1220197 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
+
+-  ``ERRATA_N1_1257314``: This applies errata 1257314 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_N1_1262606``: This applies errata 1262606 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_N1_1262888``: This applies errata 1262888 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_N1_1275112``: This applies errata 1275112 workaround to Neoverse-N1
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
 -  ``ERRATA_N1_1315703``: This applies errata 1315703 workaround to Neoverse-N1
    CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
 
diff --git a/include/lib/cpus/aarch64/neoverse_n1.h b/include/lib/cpus/aarch64/neoverse_n1.h
index b66aeb8a0..f90aa2ea4 100644
--- a/include/lib/cpus/aarch64/neoverse_n1.h
+++ b/include/lib/cpus/aarch64/neoverse_n1.h
@@ -30,13 +30,29 @@
  ******************************************************************************/
 #define NEOVERSE_N1_CPUECTLR_EL1	S3_0_C15_C1_4
 
+#define NEOVERSE_N1_WS_THR_L2_MASK	(ULL(3) << 24)
+#define NEOVERSE_N1_CPUECTLR_EL1_MM_TLBPF_DIS_BIT	(ULL(1) << 51)
+
 /*******************************************************************************
  * CPU Auxiliary Control register specific definitions.
  ******************************************************************************/
+#define NEOVERSE_N1_CPUACTLR_EL1	S3_0_C15_C1_0
+
+#define NEOVERSE_N1_CPUACTLR_EL1_BIT_6	(ULL(1) << 6)
+#define NEOVERSE_N1_CPUACTLR_EL1_BIT_13	(ULL(1) << 13)
+
 #define NEOVERSE_N1_CPUACTLR2_EL1	S3_0_C15_C1_1
 
+#define NEOVERSE_N1_CPUACTLR2_EL1_BIT_0		(ULL(1) << 0)
 #define NEOVERSE_N1_CPUACTLR2_EL1_BIT_2		(ULL(1) << 2)
+#define NEOVERSE_N1_CPUACTLR2_EL1_BIT_11	(ULL(1) << 11)
+#define NEOVERSE_N1_CPUACTLR2_EL1_BIT_15	(ULL(1) << 15)
 #define NEOVERSE_N1_CPUACTLR2_EL1_BIT_16	(ULL(1) << 16)
+#define NEOVERSE_N1_CPUACTLR2_EL1_BIT_59	(ULL(1) << 59)
+
+#define NEOVERSE_N1_CPUACTLR3_EL1	S3_0_C15_C1_2
+
+#define NEOVERSE_N1_CPUACTLR3_EL1_BIT_10	(ULL(1) << 10)
 
 /* Instruction patching registers */
 #define CPUPSELR_EL3	S3_6_C15_C8_0
diff --git a/lib/cpus/aarch64/neoverse_n1.S b/lib/cpus/aarch64/neoverse_n1.S
index 8afc4a283..b143a2e7b 100644
--- a/lib/cpus/aarch64/neoverse_n1.S
+++ b/lib/cpus/aarch64/neoverse_n1.S
@@ -43,7 +43,6 @@ func errata_n1_1043202_wa
 	msr	CPUPMR_EL3, x0
 	ldr	x0, =0x800200071
 	msr	CPUPCR_EL3, x0
-	isb
 1:
 	ret	x17
 endfunc errata_n1_1043202_wa
@@ -69,13 +68,247 @@ func neoverse_n1_disable_speculative_loads
 
 	/* Disable speculative loads */
 	msr	SSBS, xzr
-	isb
 
 1:
 	ret
 endfunc neoverse_n1_disable_speculative_loads
 
 /* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1073348
+ * This applies to revision r0p0 and r1p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1073348_wa
+	/* Compare x0 against revision r1p0 */
+	mov	x17, x30
+	bl	check_errata_1073348
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR_EL1_BIT_6
+	msr	NEOVERSE_N1_CPUACTLR_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1073348_wa
+
+func check_errata_1073348
+	/* Applies to r0p0 and r1p0 */
+	mov	x1, #0x10
+	b	cpu_rev_var_ls
+endfunc check_errata_1073348
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1130799
+ * This applies to revision <=r2p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1130799_wa
+	/* Compare x0 against revision r2p0 */
+	mov	x17, x30
+	bl	check_errata_1130799
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR2_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR2_EL1_BIT_59
+	msr	NEOVERSE_N1_CPUACTLR2_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1130799_wa
+
+func check_errata_1130799
+	/* Applies to <=r2p0 */
+	mov	x1, #0x20
+	b	cpu_rev_var_ls
+endfunc check_errata_1130799
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1165347
+ * This applies to revision <=r2p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1165347_wa
+	/* Compare x0 against revision r2p0 */
+	mov	x17, x30
+	bl	check_errata_1165347
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR2_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR2_EL1_BIT_0
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR2_EL1_BIT_15
+	msr	NEOVERSE_N1_CPUACTLR2_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1165347_wa
+
+func check_errata_1165347
+	/* Applies to <=r2p0 */
+	mov	x1, #0x20
+	b	cpu_rev_var_ls
+endfunc check_errata_1165347
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1207823
+ * This applies to revision <=r2p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1207823_wa
+	/* Compare x0 against revision r2p0 */
+	mov	x17, x30
+	bl	check_errata_1207823
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR2_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR2_EL1_BIT_11
+	msr	NEOVERSE_N1_CPUACTLR2_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1207823_wa
+
+func check_errata_1207823
+	/* Applies to <=r2p0 */
+	mov	x1, #0x20
+	b	cpu_rev_var_ls
+endfunc check_errata_1207823
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1220197
+ * This applies to revision <=r2p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1220197_wa
+	/* Compare x0 against revision r2p0 */
+	mov	x17, x30
+	bl	check_errata_1220197
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUECTLR_EL1
+	orr	x1, x1, NEOVERSE_N1_WS_THR_L2_MASK
+	msr	NEOVERSE_N1_CPUECTLR_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1220197_wa
+
+func check_errata_1220197
+	/* Applies to <=r2p0 */
+	mov	x1, #0x20
+	b	cpu_rev_var_ls
+endfunc check_errata_1220197
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1257314
+ * This applies to revision <=r3p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1257314_wa
+	/* Compare x0 against revision r3p0 */
+	mov	x17, x30
+	bl	check_errata_1257314
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR3_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR3_EL1_BIT_10
+	msr	NEOVERSE_N1_CPUACTLR3_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1257314_wa
+
+func check_errata_1257314
+	/* Applies to <=r3p0 */
+	mov	x1, #0x30
+	b	cpu_rev_var_ls
+endfunc check_errata_1257314
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1262606
+ * This applies to revision <=r3p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1262606_wa
+	/* Compare x0 against revision r3p0 */
+	mov	x17, x30
+	bl	check_errata_1262606
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR_EL1_BIT_13
+	msr	NEOVERSE_N1_CPUACTLR_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1262606_wa
+
+func check_errata_1262606
+	/* Applies to <=r3p0 */
+	mov	x1, #0x30
+	b	cpu_rev_var_ls
+endfunc check_errata_1262606
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1262888
+ * This applies to revision <=r3p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1262888_wa
+	/* Compare x0 against revision r3p0 */
+	mov	x17, x30
+	bl	check_errata_1262888
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUECTLR_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUECTLR_EL1_MM_TLBPF_DIS_BIT
+	msr	NEOVERSE_N1_CPUECTLR_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1262888_wa
+
+func check_errata_1262888
+	/* Applies to <=r3p0 */
+	mov	x1, #0x30
+	b	cpu_rev_var_ls
+endfunc check_errata_1262888
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1275112
+ * This applies to revision <=r3p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1275112_wa
+	/* Compare x0 against revision r3p0 */
+	mov	x17, x30
+	bl	check_errata_1275112
+	cbz	x0, 1f
+	mrs	x1, NEOVERSE_N1_CPUACTLR_EL1
+	orr	x1, x1, NEOVERSE_N1_CPUACTLR_EL1_BIT_13
+	msr	NEOVERSE_N1_CPUACTLR_EL1, x1
+1:
+	ret	x17
+endfunc errata_n1_1275112_wa
+
+func check_errata_1275112
+	/* Applies to <=r3p0 */
+	mov	x1, #0x30
+	b	cpu_rev_var_ls
+endfunc check_errata_1275112
+
+/* --------------------------------------------------
  * Errata Workaround for Neoverse N1 Erratum 1315703.
  * This applies to revision <= r3p0 of Neoverse N1.
  * Inputs:
@@ -92,7 +325,6 @@ func errata_n1_1315703_wa
 	mrs	x0, NEOVERSE_N1_CPUACTLR2_EL1
 	orr	x0, x0, #NEOVERSE_N1_CPUACTLR2_EL1_BIT_16
 	msr	NEOVERSE_N1_CPUACTLR2_EL1, x0
-	isb
 
 1:
 	ret	x17
@@ -123,6 +355,51 @@ func neoverse_n1_reset_func
 	bl	errata_n1_1043202_wa
 #endif
 
+#if ERRATA_N1_1073348
+	mov	x0, x18
+	bl	errata_n1_1073348_wa
+#endif
+
+#if ERRATA_N1_1130799
+	mov	x0, x18
+	bl	errata_n1_1130799_wa
+#endif
+
+#if ERRATA_N1_1165347
+	mov	x0, x18
+	bl	errata_n1_1165347_wa
+#endif
+
+#if ERRATA_N1_1207823
+	mov	x0, x18
+	bl	errata_n1_1207823_wa
+#endif
+
+#if ERRATA_N1_1220197
+	mov	x0, x18
+	bl	errata_n1_1220197_wa
+#endif
+
+#if ERRATA_N1_1257314
+	mov	x0, x18
+	bl	errata_n1_1257314_wa
+#endif
+
+#if ERRATA_N1_1262606
+	mov	x0, x18
+	bl	errata_n1_1262606_wa
+#endif
+
+#if ERRATA_N1_1262888
+	mov	x0, x18
+	bl	errata_n1_1262888_wa
+#endif
+
+#if ERRATA_N1_1275112
+	mov	x0, x18
+	bl	errata_n1_1275112_wa
+#endif
+
 #if ERRATA_N1_1315703
 	mov	x0, x18
 	bl	errata_n1_1315703_wa
@@ -133,24 +410,22 @@ func neoverse_n1_reset_func
 	mrs	x0, actlr_el3
 	orr	x0, x0, #NEOVERSE_N1_ACTLR_AMEN_BIT
 	msr	actlr_el3, x0
-	isb
 
 	/* Make sure accesses from EL0/EL1 are not trapped to EL2 */
 	mrs	x0, actlr_el2
 	orr	x0, x0, #NEOVERSE_N1_ACTLR_AMEN_BIT
 	msr	actlr_el2, x0
-	isb
 
 	/* Enable group0 counters */
 	mov	x0, #NEOVERSE_N1_AMU_GROUP0_MASK
 	msr	CPUAMCNTENSET_EL0, x0
-	isb
 #endif
 
 #if ERRATA_DSU_936184
 	bl	errata_dsu_936184_wa
 #endif
 
+	isb
 	ret	x19
 endfunc neoverse_n1_reset_func
 
@@ -185,6 +460,15 @@ func neoverse_n1_errata_report
 	 * checking functions of each errata.
 	 */
 	report_errata ERRATA_N1_1043202, neoverse_n1, 1043202
+	report_errata ERRATA_N1_1073348, neoverse_n1, 1073348
+	report_errata ERRATA_N1_1130799, neoverse_n1, 1130799
+	report_errata ERRATA_N1_1165347, neoverse_n1, 1165347
+	report_errata ERRATA_N1_1207823, neoverse_n1, 1207823
+	report_errata ERRATA_N1_1220197, neoverse_n1, 1220197
+	report_errata ERRATA_N1_1257314, neoverse_n1, 1257314
+	report_errata ERRATA_N1_1262606, neoverse_n1, 1262606
+	report_errata ERRATA_N1_1262888, neoverse_n1, 1262888
+	report_errata ERRATA_N1_1275112, neoverse_n1, 1275112
 	report_errata ERRATA_N1_1315703, neoverse_n1, 1315703
 	report_errata ERRATA_DSU_936184, neoverse_n1, dsu_936184
 
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index db4537528..260402351 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -238,6 +238,42 @@ ERRATA_A76_1286807	?=0
 # only to r0p0 and r1p0 of the Neoverse N1 cpu.
 ERRATA_N1_1043202	?=1
 
+# Flag to apply erratum 1073348 workaround during reset. This erratum applies
+# only to revision r0p0 and r1p0 of the Neoverse N1 cpu.
+ERRATA_N1_1073348	?=0
+
+# Flag to apply erratum 1130799 workaround during reset. This erratum applies
+# only to revision <= r2p0 of the Neoverse N1 cpu.
+ERRATA_N1_1130799	?=0
+
+# Flag to apply erratum 1165347 workaround during reset. This erratum applies
+# only to revision <= r2p0 of the Neoverse N1 cpu.
+ERRATA_N1_1165347	?=0
+
+# Flag to apply erratum 1207823 workaround during reset. This erratum applies
+# only to revision <= r2p0 of the Neoverse N1 cpu.
+ERRATA_N1_1207823	?=0
+
+# Flag to apply erratum 1220197 workaround during reset. This erratum applies
+# only to revision <= r2p0 of the Neoverse N1 cpu.
+ERRATA_N1_1220197	?=0
+
+# Flag to apply erratum 1257314 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Neoverse N1 cpu.
+ERRATA_N1_1257314	?=0
+
+# Flag to apply erratum 1262606 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Neoverse N1 cpu.
+ERRATA_N1_1262606	?=0
+
+# Flag to apply erratum 1262888 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Neoverse N1 cpu.
+ERRATA_N1_1262888	?=0
+
+# Flag to apply erratum 1275112 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Neoverse N1 cpu.
+ERRATA_N1_1275112	?=0
+
 # Flag to apply erratum 1315703 workaround during reset. This erratum applies
 # to revisions before r3p1 of the Neoverse N1 cpu.
 ERRATA_N1_1315703	?=1
@@ -431,6 +467,42 @@ $(eval $(call add_define,ERRATA_A76_1286807))
 $(eval $(call assert_boolean,ERRATA_N1_1043202))
 $(eval $(call add_define,ERRATA_N1_1043202))
 
+# Process ERRATA_N1_1073348 flag
+$(eval $(call assert_boolean,ERRATA_N1_1073348))
+$(eval $(call add_define,ERRATA_N1_1073348))
+
+# Process ERRATA_N1_1130799 flag
+$(eval $(call assert_boolean,ERRATA_N1_1130799))
+$(eval $(call add_define,ERRATA_N1_1130799))
+
+# Process ERRATA_N1_1165347 flag
+$(eval $(call assert_boolean,ERRATA_N1_1165347))
+$(eval $(call add_define,ERRATA_N1_1165347))
+
+# Process ERRATA_N1_1207823 flag
+$(eval $(call assert_boolean,ERRATA_N1_1207823))
+$(eval $(call add_define,ERRATA_N1_1207823))
+
+# Process ERRATA_N1_1220197 flag
+$(eval $(call assert_boolean,ERRATA_N1_1220197))
+$(eval $(call add_define,ERRATA_N1_1220197))
+
+# Process ERRATA_N1_1257314 flag
+$(eval $(call assert_boolean,ERRATA_N1_1257314))
+$(eval $(call add_define,ERRATA_N1_1257314))
+
+# Process ERRATA_N1_1262606 flag
+$(eval $(call assert_boolean,ERRATA_N1_1262606))
+$(eval $(call add_define,ERRATA_N1_1262606))
+
+# Process ERRATA_N1_1262888 flag
+$(eval $(call assert_boolean,ERRATA_N1_1262888))
+$(eval $(call add_define,ERRATA_N1_1262888))
+
+# Process ERRATA_N1_1275112 flag
+$(eval $(call assert_boolean,ERRATA_N1_1275112))
+$(eval $(call add_define,ERRATA_N1_1275112))
+
 # Process ERRATA_N1_1315703 flag
 $(eval $(call assert_boolean,ERRATA_N1_1315703))
 $(eval $(call add_define,ERRATA_N1_1315703))