Merge changes from topic "erratas" into integration
* changes:
errata: workaround for Neoverse N2 erratum 2138956
errata: workaround for Neoverse N2 erratum 2189731
errata: workaround for Cortex-A710 erratum 2017096
errata: workaround for Cortex-A710 erratum 2055002
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index ff8a66d..bde6d97 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -381,6 +381,14 @@
Cortex-A710 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
r2p0 of the CPU. It is still open.
+- ``ERRATA_A710_2055002``: This applies errata 2055002 workaround to
+ Cortex-A710 CPU. This needs to be enabled for revisions r1p0, r2p0 of the CPU
+ and is still open.
+
+- ``ERRATA_A710_2017096``: This applies errata 2017096 workaround to
+ Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0 and r2p0
+ of the CPU and is still open.
+
For Neoverse N2, the following errata build flags are defined :
- ``ERRATA_N2_2067956``: This applies errata 2067956 workaround to Neoverse-N2
@@ -389,6 +397,12 @@
- ``ERRATA_N2_2025414``: This applies errata 2025414 workaround to Neoverse-N2
CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+- ``ERRATA_N2_2189731``: This applies errata 2189731 workaround to Neoverse-N2
+ CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+
+- ``ERRATA_N2_2138956``: This applies errata 2138956 workaround to Neoverse-N2
+ CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+
DSU Errata Workarounds
----------------------
diff --git a/include/lib/cpus/aarch64/cortex_a710.h b/include/lib/cpus/aarch64/cortex_a710.h
index 44c540c..8b011aa 100644
--- a/include/lib/cpus/aarch64/cortex_a710.h
+++ b/include/lib/cpus/aarch64/cortex_a710.h
@@ -13,6 +13,7 @@
* CPU Extended Control register specific definitions
******************************************************************************/
#define CORTEX_A710_CPUECTLR_EL1 S3_0_C15_C1_4
+#define CORTEX_A710_CPUECTLR_EL1_PFSTIDIS_BIT (ULL(1) << 8)
/*******************************************************************************
* CPU Power Control register specific definitions
@@ -20,4 +21,10 @@
#define CORTEX_A710_CPUPWRCTLR_EL1 S3_0_C15_C2_7
#define CORTEX_A710_CPUPWRCTLR_EL1_CORE_PWRDN_BIT U(1)
+/*******************************************************************************
+ * CPU Auxiliary Control register specific definitions.
+ ******************************************************************************/
+#define CORTEX_A710_CPUACTLR_EL1 S3_0_C15_C1_0
+#define CORTEX_A710_CPUACTLR_EL1_BIT_46 (ULL(1) << 46)
+
#endif /* CORTEX_A710_H */
diff --git a/include/lib/cpus/aarch64/neoverse_n2.h b/include/lib/cpus/aarch64/neoverse_n2.h
index 68f6a40..948f965 100644
--- a/include/lib/cpus/aarch64/neoverse_n2.h
+++ b/include/lib/cpus/aarch64/neoverse_n2.h
@@ -35,4 +35,10 @@
#define NEOVERSE_N2_CPUACTLR2_EL1 S3_0_C15_C1_1
#define NEOVERSE_N2_CPUACTLR2_EL1_BIT_2 (ULL(1) << 2)
+/*******************************************************************************
+ * CPU Auxiliary Control register 5 specific definitions.
+ ******************************************************************************/
+#define NEOVERSE_N2_CPUACTLR5_EL1 S3_0_C15_C8_0
+#define NEOVERSE_N2_CPUACTLR5_EL1_BIT_44 (ULL(1) << 44)
+
#endif /* NEOVERSE_N2_H */
diff --git a/lib/cpus/aarch64/cortex_a710.S b/lib/cpus/aarch64/cortex_a710.S
index 469b430..75b7647 100644
--- a/lib/cpus/aarch64/cortex_a710.S
+++ b/lib/cpus/aarch64/cortex_a710.S
@@ -107,6 +107,59 @@
b cpu_rev_var_ls
endfunc check_errata_2081180
+/* ---------------------------------------------------------------------
+ * Errata Workaround for Cortex-A710 Erratum 2055002.
+ * This applies to revision r1p0, r2p0 of Cortex-A710 and is still open.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * ---------------------------------------------------------------------
+ */
+func errata_a710_2055002_wa
+ /* Compare x0 against revision r2p0 */
+ mov x17, x30
+ bl check_errata_2055002
+ cbz x0, 1f
+ mrs x1, CORTEX_A710_CPUACTLR_EL1
+ orr x1, x1, CORTEX_A710_CPUACTLR_EL1_BIT_46
+ msr CORTEX_A710_CPUACTLR_EL1, x1
+1:
+ ret x17
+endfunc errata_a710_2055002_wa
+
+func check_errata_2055002
+ /* Applies to r1p0, r2p0 */
+ mov x1, #0x20
+ b cpu_rev_var_ls
+endfunc check_errata_2055002
+
+/* -------------------------------------------------------------
+ * Errata Workaround for Cortex-A710 Erratum 2017096.
+ * This applies to revisions r0p0, r1p0 and r2p0 of Cortex-A710.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * -------------------------------------------------------------
+ */
+func errata_a710_2017096_wa
+ /* Compare x0 against revision r0p0 to r2p0 */
+ mov x17, x30
+ bl check_errata_2017096
+ cbz x0, 1f
+ mrs x1, CORTEX_A710_CPUECTLR_EL1
+ orr x1, x1, CORTEX_A710_CPUECTLR_EL1_PFSTIDIS_BIT
+ msr CORTEX_A710_CPUECTLR_EL1, x1
+
+1:
+ ret x17
+endfunc errata_a710_2017096_wa
+
+func check_errata_2017096
+ /* Applies to r0p0, r1p0, r2p0 */
+ mov x1, #0x20
+ b cpu_rev_var_ls
+endfunc check_errata_2017096
+
/* ----------------------------------------------------
* HW will do the cache maintenance while powering down
* ----------------------------------------------------
@@ -123,10 +176,10 @@
ret
endfunc cortex_a710_core_pwr_dwn
+#if REPORT_ERRATA
/*
- * Errata printing function for Cortex A710. Must follow AAPCS.
+ * Errata printing function for Cortex-A710. Must follow AAPCS.
*/
-#if REPORT_ERRATA
func cortex_a710_errata_report
stp x8, x30, [sp, #-16]!
@@ -139,6 +192,8 @@
*/
report_errata ERRATA_A710_1987031, cortex_a710, 1987031
report_errata ERRATA_A710_2081180, cortex_a710, 2081180
+ report_errata ERRATA_A710_2055002, cortex_a710, 2055002
+ report_errata ERRATA_A710_2017096, cortex_a710, 2017096
ldp x8, x30, [sp], #16
ret
@@ -164,8 +219,17 @@
bl errata_a710_2081180_wa
#endif
+#if ERRATA_A710_2055002
+ mov x0, x18
+ bl errata_a710_2055002_wa
+#endif
+
+#if ERRATA_A710_2017096
+ mov x0, x18
+ bl errata_a710_2017096_wa
+#endif
isb
- ret x19
+ ret x19
endfunc cortex_a710_reset_func
/* ---------------------------------------------
diff --git a/lib/cpus/aarch64/neoverse_n2.S b/lib/cpus/aarch64/neoverse_n2.S
index a745ca5..9e7bbf7 100644
--- a/lib/cpus/aarch64/neoverse_n2.S
+++ b/lib/cpus/aarch64/neoverse_n2.S
@@ -114,6 +114,75 @@
b cpu_rev_var_ls
endfunc check_errata_2025414
+/* ---------------------------------------------------------------
+ * Errata Workaround for Neoverse N2 Erratum 2189731.
+ * This applies to revision r0p0 of Neoverse N2 and is still open.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * ---------------------------------------------------------------
+ */
+func errata_n2_2189731_wa
+ /* Compare x0 against revision r0p0 */
+ mov x17, x30
+ bl check_errata_2189731
+ cbz x0, 1f
+ mrs x1, NEOVERSE_N2_CPUACTLR5_EL1
+ orr x1, x1, NEOVERSE_N2_CPUACTLR5_EL1_BIT_44
+ msr NEOVERSE_N2_CPUACTLR5_EL1, x1
+
+1:
+ ret x17
+endfunc errata_n2_2189731_wa
+
+func check_errata_2189731
+ /* Applies to r0p0 */
+ mov x1, #0x00
+ b cpu_rev_var_ls
+endfunc check_errata_2189731
+
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N2 Erratum 2138956.
+ * This applies to revision r0p0 of Neoverse N2. it is still open.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n2_2138956_wa
+ /* Check revision. */
+ mov x17, x30
+ bl check_errata_2138956
+ cbz x0, 1f
+
+ /* Apply instruction patching sequence */
+ ldr x0,=0x3
+ msr S3_6_c15_c8_0,x0
+ ldr x0,=0xF3A08002
+ msr S3_6_c15_c8_2,x0
+ ldr x0,=0xFFF0F7FE
+ msr S3_6_c15_c8_3,x0
+ ldr x0,=0x10002001003FF
+ msr S3_6_c15_c8_1,x0
+ ldr x0,=0x4
+ msr S3_6_c15_c8_0,x0
+ ldr x0,=0xBF200000
+ msr S3_6_c15_c8_2,x0
+ ldr x0,=0xFFEF0000
+ msr S3_6_c15_c8_3,x0
+ ldr x0,=0x10002001003F3
+ msr S3_6_c15_c8_1,x0
+ isb
+1:
+ ret x17
+endfunc errata_n2_2138956_wa
+
+func check_errata_2138956
+ /* Applies to r0p0 */
+ mov x1, #0x00
+ b cpu_rev_var_ls
+endfunc check_errata_2138956
+
/* -------------------------------------------
* The CPU Ops reset function for Neoverse N2.
* -------------------------------------------
@@ -144,6 +213,17 @@
bl errata_n2_2025414_wa
#endif
+#if ERRATA_N2_2189731
+ mov x0, x18
+ bl errata_n2_2189731_wa
+#endif
+
+
+#if ERRATA_N2_2138956
+ mov x0, x18
+ bl errata_n2_2138956_wa
+#endif
+
#if ENABLE_AMU
/* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */
mrs x0, cptr_el3
@@ -207,6 +287,8 @@
report_errata ERRATA_N2_2002655, neoverse_n2, 2002655
report_errata ERRATA_N2_2067956, neoverse_n2, 2067956
report_errata ERRATA_N2_2025414, neoverse_n2, 2025414
+ report_errata ERRATA_N2_2189731, neoverse_n2, 2189731
+ report_errata ERRATA_N2_2138956, neoverse_n2, 2138956
ldp x8, x30, [sp], #16
ret
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 8a2dd46..6103a5a 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -433,6 +433,22 @@
# to revision r0p0 of the Neoverse N2 cpu and is still open.
ERRATA_N2_2025414 ?=0
+# Flag to apply erratum 2189731 workaround during reset. This erratum applies
+# to revision r0p0 of the Neoverse N2 cpu and is still open.
+ERRATA_N2_2189731 ?=0
+
+# Flag to apply erratum 2138956 workaround during reset. This erratum applies
+# to revision r0p0 of the Neoverse N2 cpu and is still open.
+ERRATA_N2_2138956 ?=0
+
+# Flag to apply erratum 2055002 workaround during reset. This erratum applies
+# to revision r1p0, r2p0 of the Cortex-A710 cpu and is still open.
+ERRATA_A710_2055002 ?=0
+
+# Flag to apply erratum 2017096 workaround during reset. This erratum applies
+# to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is still open.
+ERRATA_A710_2017096 ?=0
+
# Flag to apply DSU erratum 798953. This erratum applies to DSUs revision r0p0.
# Applying the workaround results in higher DSU power consumption on idle.
ERRATA_DSU_798953 ?=0
@@ -798,6 +814,22 @@
$(eval $(call assert_boolean,ERRATA_N2_2025414))
$(eval $(call add_define,ERRATA_N2_2025414))
+# Process ERRATA_N2_2189731 flag
+$(eval $(call assert_boolean,ERRATA_N2_2189731))
+$(eval $(call add_define,ERRATA_N2_2189731))
+
+# Process ERRATA_N2_2138956 flag
+$(eval $(call assert_boolean,ERRATA_N2_2138956))
+$(eval $(call add_define,ERRATA_N2_2138956))
+
+# Process ERRATA_A710_2055002 flag
+$(eval $(call assert_boolean,ERRATA_A710_2055002))
+$(eval $(call add_define,ERRATA_A710_2055002))
+
+# Process ERRATA_A710_2017096 flag
+$(eval $(call assert_boolean,ERRATA_A710_2017096))
+$(eval $(call add_define,ERRATA_A710_2017096))
+
# Process ERRATA_DSU_798953 flag
$(eval $(call assert_boolean,ERRATA_DSU_798953))
$(eval $(call add_define,ERRATA_DSU_798953))