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| author | lauwal01 <lauren.wehrmeister@arm.com> | 2019-06-24 11:49:01 -0500 |
|---|---|---|
| committer | lauwal01 <lauren.wehrmeister@arm.com> | 2019-07-02 09:17:19 -0500 |
| commit | 4d8801fe5aa0d26ab3df42d31f0e7129209d301b (patch) | |
| tree | 02ee9ea90f76f197dc219d6e1b3527658c645c0d /lib/cpus/cpu-ops.mk | |
| parent | 11c48370bd8c1dfdf5221a073a26615904c94413 (diff) | |
| download | platform_external_arm-trusted-firmware-4d8801fe5aa0d26ab3df42d31f0e7129209d301b.tar.gz platform_external_arm-trusted-firmware-4d8801fe5aa0d26ab3df42d31f0e7129209d301b.tar.bz2 platform_external_arm-trusted-firmware-4d8801fe5aa0d26ab3df42d31f0e7129209d301b.zip | |
Workaround for Neoverse N1 erratum 1275112
Neoverse N1 erratum 1275112 is a Cat B erratum [1],
present in older revisions of the Neoverse N1 processor core.
The workaround is to set a bit in the implementation defined
CPUACTLR_EL1 system register, which delays instruction fetch after
branch misprediction.
[1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html
Change-Id: If7fe55fe92e656fa6aea12327ab297f2e6119833
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Diffstat (limited to 'lib/cpus/cpu-ops.mk')
| -rw-r--r-- | lib/cpus/cpu-ops.mk | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk index 2f13696d6..260402351 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -270,6 +270,10 @@ ERRATA_N1_1262606 ?=0 # 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 @@ -495,6 +499,10 @@ $(eval $(call add_define,ERRATA_N1_1262606)) $(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)) |