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| author | Andre Przywara <andre.przywara@arm.com> | 2019-05-20 14:57:06 +0100 |
|---|---|---|
| committer | Andre Przywara <andre.przywara@arm.com> | 2019-06-06 14:27:37 +0100 |
| commit | 5f5d0763875218893d3831a685886c17d20be940 (patch) | |
| tree | 777151cf55daa16119f9035dd5b6d9fa1d7730b8 /lib/cpus/cpu-ops.mk | |
| parent | 49d969bbb3ca7e738bc6ef560e44c0047a9925cc (diff) | |
| download | platform_external_arm-trusted-firmware-5f5d0763875218893d3831a685886c17d20be940.tar.gz platform_external_arm-trusted-firmware-5f5d0763875218893d3831a685886c17d20be940.tar.bz2 platform_external_arm-trusted-firmware-5f5d0763875218893d3831a685886c17d20be940.zip | |
Neoverse N1: Introduce workaround for Neoverse N1 erratum 1315703
Neoverse N1 erratum 1315703 is a Cat A (rare) erratum [1], present in
older revisions of the Neoverse N1 processor core.
The workaround is to set a bit in the implementation defined CPUACTLR2_EL1
system register, which will disable the load-bypass-store feature.
[1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdocpjdoc-466751330-1032/index.html
Change-Id: I5c708dbe0efa4daa0bcb6bd9622c5efe19c03af9
Signed-off-by: Andre Przywara <andre.przywara@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 599e11ed5..db4537528 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -238,6 +238,10 @@ ERRATA_A76_1286807 ?=0 # only to r0p0 and r1p0 of the Neoverse N1 cpu. ERRATA_N1_1043202 ?=1 +# Flag to apply erratum 1315703 workaround during reset. This erratum applies +# to revisions before r3p1 of the Neoverse N1 cpu. +ERRATA_N1_1315703 ?=1 + # 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 @@ -427,6 +431,10 @@ $(eval $(call add_define,ERRATA_A76_1286807)) $(eval $(call assert_boolean,ERRATA_N1_1043202)) $(eval $(call add_define,ERRATA_N1_1043202)) +# Process ERRATA_N1_1315703 flag +$(eval $(call assert_boolean,ERRATA_N1_1315703)) +$(eval $(call add_define,ERRATA_N1_1315703)) + # Process ERRATA_DSU_798953 flag $(eval $(call assert_boolean,ERRATA_DSU_798953)) $(eval $(call add_define,ERRATA_DSU_798953)) |