Merge "Revert workaround for A76 erratum 1800710" into integration
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index c976b8b..5f3d699 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -241,9 +241,6 @@
- ``ERRATA_A76_1791580``: This applies errata 1791580 workaround to Cortex-A76
CPU. This needs to be enabled only for revision <= r4p0 of the CPU.
-- ``ERRATA_A76_1800710``: This applies errata 1800710 workaround to Cortex-A76
- CPU. This needs to be enabled only for revision <= r4p0 of the CPU.
-
- ``ERRATA_A76_1165522``: This applies errata 1165522 workaround to all
revisions of Cortex-A76 CPU. This errata is fixed in r3p0 but due to
limitation of errata framework this errata is applied to all revisions
diff --git a/include/lib/cpus/aarch64/cortex_a76.h b/include/lib/cpus/aarch64/cortex_a76.h
index b522e8e..a61825f 100644
--- a/include/lib/cpus/aarch64/cortex_a76.h
+++ b/include/lib/cpus/aarch64/cortex_a76.h
@@ -20,7 +20,6 @@
#define CORTEX_A76_CPUECTLR_EL1_WS_THR_L2 (ULL(3) << 24)
#define CORTEX_A76_CPUECTLR_EL1_BIT_51 (ULL(1) << 51)
-#define CORTEX_A76_CPUECTLR_EL1_BIT_53 (ULL(1) << 53)
/*******************************************************************************
* CPU Auxiliary Control register specific definitions.
diff --git a/lib/cpus/aarch64/cortex_a76.S b/lib/cpus/aarch64/cortex_a76.S
index 98a1183..2c99cdc 100644
--- a/lib/cpus/aarch64/cortex_a76.S
+++ b/lib/cpus/aarch64/cortex_a76.S
@@ -382,35 +382,6 @@
endfunc check_errata_1791580
/* --------------------------------------------------
- * Errata Workaround for Cortex A76 Errata #1800710.
- * This applies to revision <= r4p0 of Cortex A76.
- * Inputs:
- * x0: variant[4:7] and revision[0:3] of current cpu.
- * Shall clobber: x0-x17
- * --------------------------------------------------
- */
-func errata_a76_1800710_wa
- /* Compare x0 against revision <= r4p0 */
- mov x17, x30
- bl check_errata_1800710
- cbz x0, 1f
-
- /* Disable allocation of splintered pages in the L2 TLB */
- mrs x1, CORTEX_A76_CPUECTLR_EL1
- orr x1, x1, CORTEX_A76_CPUECTLR_EL1_BIT_53
- msr CORTEX_A76_CPUECTLR_EL1, x1
- isb
-1:
- ret x17
-endfunc errata_a76_1800710_wa
-
-func check_errata_1800710
- /* Applies to everything <= r4p0 */
- mov x1, #0x40
- b cpu_rev_var_ls
-endfunc check_errata_1800710
-
- /* --------------------------------------------------
* Errata Workaround for Cortex A76 Errata #1262606,
* #1275112, and #1868343. #1262606 and #1275112
* apply to revisions <= r3p0 and #1868343 applies to
@@ -538,11 +509,6 @@
bl errata_a76_1791580_wa
#endif
-#if ERRATA_A76_1800710
- mov x0, x18
- bl errata_a76_1800710_wa
-#endif
-
#if WORKAROUND_CVE_2018_3639
/* If the PE implements SSBS, we don't need the dynamic workaround */
mrs x0, id_aa64pfr1_el1
@@ -624,7 +590,6 @@
report_errata ERRATA_A76_1275112, cortex_a76, 1275112
report_errata ERRATA_A76_1286807, cortex_a76, 1286807
report_errata ERRATA_A76_1791580, cortex_a76, 1791580
- report_errata ERRATA_A76_1800710, cortex_a76, 1800710
report_errata ERRATA_A76_1165522, cortex_a76, 1165522
report_errata ERRATA_A76_1868343, cortex_a76, 1868343
report_errata WORKAROUND_CVE_2018_3639, cortex_a76, cve_2018_3639
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 1210538..7575051 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -270,10 +270,6 @@
# only to revision <= r4p0 of the Cortex A76 cpu.
ERRATA_A76_1791580 ?=0
-# Flag to apply erratum 1800710 workaround during reset. This erratum applies
-# only to revision <= r4p0 of the Cortex A76 cpu.
-ERRATA_A76_1800710 ?=0
-
# Flag to apply erratum 1165522 workaround during reset. This erratum applies
# to all revisions of Cortex A76 cpu.
ERRATA_A76_1165522 ?=0
@@ -555,10 +551,6 @@
$(eval $(call assert_boolean,ERRATA_A76_1791580))
$(eval $(call add_define,ERRATA_A76_1791580))
-# Process ERRATA_A76_1800710 flag
-$(eval $(call assert_boolean,ERRATA_A76_1800710))
-$(eval $(call add_define,ERRATA_A76_1800710))
-
# Process ERRATA_A76_1165522 flag
$(eval $(call assert_boolean,ERRATA_A76_1165522))
$(eval $(call add_define,ERRATA_A76_1165522))