| #
efc945f1 |
| 05-May-2025 |
Arvind Ram Prakash <arvind.ramprakash@arm.com> |
feat(errata): implement workaround for DSU-120 erratum 2900952
DSU Erratum 2900952 is a Cat B erratum that applies to some
DSU-120 implementations of revision r2p0 and is fixed in r2p1.
This erratum
feat(errata): implement workaround for DSU-120 erratum 2900952
DSU Erratum 2900952 is a Cat B erratum that applies to some
DSU-120 implementations of revision r2p0 and is fixed in r2p1.
This erratum is fixed in certain implementations of r2p0 which can be
determined by reading the IMP_CLUSTERREVIDR_EL1[1] register field
where a set bit indicates that the erratum is fixed in this part.
The workaround is to set the CLUSTERACTLR_EL1 bits [21:20] to 0x3
which ignores CBusy from the system interconnect and
setting CLUSTERACTLR_EL1 bit [8] to 1 to assert CBusy from DSU to
all the cores when DSU is busy.
SDEN: https://developer.arm.com/documentation/SDEN-2453103/1200/?lang=en
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I87aa440ab5c35121aff703032f5cf7a62d0b0bb4
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| #
a8a5d39d |
| 24-Feb-2025 |
Manish V Badarkhe <manish.badarkhe@arm.com> |
Merge changes from topic "bk/errata_speed" into integration
* changes:
refactor(cpus): declare runtime errata correctly
perf(cpus): make reset errata do fewer branches
perf(cpus): inline the i
Merge changes from topic "bk/errata_speed" into integration
* changes:
refactor(cpus): declare runtime errata correctly
perf(cpus): make reset errata do fewer branches
perf(cpus): inline the init_cpu_data_ptr function
perf(cpus): inline the reset function
perf(cpus): inline the cpu_get_rev_var call
perf(cpus): inline cpu_rev_var checks
refactor(cpus): register DSU errata with the errata framework's wrappers
refactor(cpus): convert checker functions to standard helpers
refactor(cpus): convert the Cortex-A65 to use the errata framework
fix(cpus): declare reset errata correctly
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| #
b62673c6 |
| 23-Jan-2025 |
Boyan Karatotev <boyan.karatotev@arm.com> |
refactor(cpus): register DSU errata with the errata framework's wrappers
The existing DSU errata workarounds hijack the errata framework's inner
workings to register with it. However, that is undesi
refactor(cpus): register DSU errata with the errata framework's wrappers
The existing DSU errata workarounds hijack the errata framework's inner
workings to register with it. However, that is undesirable as any change
to the framework may end up missing these workarounds. So convert the
checks and workarounds to macros and have them included with the
standard wrappers.
The only problem with this is the is_scu_present_in_dsu weak function.
Fortunately, it is only needed for 2 of the errata and only on 3 cores.
So drop it, assuming the default behaviour and have the callers handle
the exception.
Change-Id: Iefa36325804ea093e938f867b9a6f49a6984b8ae
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
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