- 27 Jan, 2020 1 commit
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Manish Pandey authored
CPUECTLR_EL1.EXTLLC bit indicates the presense of internal or external last level cache(LLC) in the system, the reset value is internal LLC. To cater for the platforms(like N1SDP) which has external LLC present introduce a new build option 'NEOVERSE_N1_EXTERNAL_LLC' which can be enabled by platform port. Signed-off-by: Manish Pandey <manish.pandey2@arm.com> Change-Id: Ibf475fcd6fd44401897a71600f4eafe989921363
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- 04 Oct, 2019 1 commit
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laurenw-arm authored
Coherent I-cache is causing a prefetch violation where when the core executes an instruction that has recently been modified, the core might fetch a stale instruction which violates the ordering of instruction fetches. The workaround includes an instruction sequence to implementation defined registers to trap all EL0 IC IVAU instructions to EL3 and a trap handler to execute a TLB inner-shareable invalidation to an arbitrary address followed by a DSB. Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com> Change-Id: Ic3b7cbb11cf2eaf9005523ef5578a372593ae4d6
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- 02 Jul, 2019 8 commits
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lauwal01 authored
Neoverse N1 erratum 1262888 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 CPUECTLR_EL1 system register, which disables the MMU hardware prefetcher. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: Ib733d748e32a7ea6a2783f3d5a9c5e13eee01105 Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1262606 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: Idd980e9d5310232d38f0ce272862e1fb0f02ce9a Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1257314 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 CPUACTLR3_EL1 system register, which prevents parallel execution of divide and square root instructions. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: I54f0f40ff9043efee40d51e796b92ed85b394cbb Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1220197 is a Cat B erratum [1], present in older revisions of the Neoverse N1 processor core. The workaround is to set two bits in the implementation defined CPUECTLR_EL1 system register, which disables write streaming to the L2. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: I9c3373f1b6d67d21ee71b2b80aec5e96826818e8 Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1207823 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 CPUACTLR2_EL1 system register. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: Ia932337821f1ef0d644db3612480462a8d924d21 Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1165347 is a Cat B erratum [1], present in older revisions of the Neoverse N1 processor core. The workaround is to set two bits in the implementation defined CPUACTLR2_EL1 system register. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: I163d0ea00578245c1323d2340314cdc3088c450d Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1130799 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 CPUACTLR2_EL1 system register. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: I252bc45f9733443ba0503fefe62f50fdea61da6d Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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lauwal01 authored
Neoverse N1 erratum 1073348 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 disables static prediction. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html Change-Id: I674126c0af6e068eecb379a190bcf7c75dcbca8e Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
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- 06 Jun, 2019 1 commit
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Andre Przywara authored
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>
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- 18 Apr, 2019 1 commit
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Louis Mayencourt authored
This patch forces all cacheable atomic instructions to be near, which improves performance in highly contended parallelized use-cases. Change-Id: I93fac62847f4af8d5eaaf3b52318c30893e947d3 Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
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- 19 Feb, 2019 2 commits
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John Tsichritzis authored
Change-Id: Ideb49011da35f39ff1959be6f5015fa212ca2b6b Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
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John Tsichritzis authored
Change-Id: I0bb5aca9bb272332340b5baefc473a01f8a27896 Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
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- 04 Jan, 2019 1 commit
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Antonio Nino Diaz authored
Enforce full include path for includes. Deprecate old paths. The following folders inside include/lib have been left unchanged: - include/lib/cpus/${ARCH} - include/lib/el3_runtime/${ARCH} The reason for this change is that having a global namespace for includes isn't a good idea. It defeats one of the advantages of having folders and it introduces problems that are sometimes subtle (because you may not know the header you are actually including if there are two of them). For example, this patch had to be created because two headers were called the same way: e0ea0928 ("Fix gpio includes of mt8173 platform to avoid collision."). More recently, this patch has had similar problems: 46f9b2c3 ("drivers: add tzc380 support"). This problem was introduced in commit 4ecca339 ("Move include and source files to logical locations"). At that time, there weren't too many headers so it wasn't a real issue. However, time has shown that this creates problems. Platforms that want to preserve the way they include headers may add the removed paths to PLAT_INCLUDES, but this is discouraged. Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
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- 29 Oct, 2018 1 commit
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Antonio Nino Diaz authored
No functional changes. Change-Id: Iaab0310848be587b635ce5339726e92a50f534e0 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
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- 08 Jun, 2018 3 commits
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Dimitris Papastamos authored
The workaround uses the instruction patching feature of the Ares cpu. Change-Id: I868fce0dc0e8e41853dcce311f01ee3867aabb59 Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
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Dimitris Papastamos authored
Change-Id: Ia170c12d3929a616ba80eb7645c301066641f5cc Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
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Isla Mitchell authored
Both Cortex-Ares and Cortex-A76 CPUs use the ARM DynamIQ Shared Unit (DSU). The power-down and power-up sequences are therefore mostly managed in hardware, and required software operations are simple. Change-Id: I3a9447b5bdbdbc5ed845b20f6564d086516fa161 Signed-off-by: Isla Mitchell <isla.mitchell@arm.com>
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