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/rk3399_ARM-atf/include/lib/cpus/aarch64/
H A Dcortex_x2.he16045de50e8b430e6601ba0e1e47097d8310f3d Fri Dec 03 17:27:33 UTC 2021 johpow01 <john.powell@arm.com> fix(errata): workaround for Cortex X2 erratum 2058056

Cortex X2 erratum 2058056 is a Cat B erratum present in the X2 core.
It applies to revisions r0p0, r1p0, and r2p0 and is still open.

There are 2 ways this workaround can be accomplished, the first of
which involves executing a few additional instructions around MSR
writes to CPUECTLR when disabling the prefetcher. (see SDEN for
details)

However, this patch implements the 2nd possible workaround which sets
the prefetcher into its most conservative mode, since this workaround
is generic.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775100

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Idb20d9928c986616cd5bedf40bb29d46d384cfd3
/rk3399_ARM-atf/lib/cpus/aarch64/
H A Dcortex_x2.Se16045de50e8b430e6601ba0e1e47097d8310f3d Fri Dec 03 17:27:33 UTC 2021 johpow01 <john.powell@arm.com> fix(errata): workaround for Cortex X2 erratum 2058056

Cortex X2 erratum 2058056 is a Cat B erratum present in the X2 core.
It applies to revisions r0p0, r1p0, and r2p0 and is still open.

There are 2 ways this workaround can be accomplished, the first of
which involves executing a few additional instructions around MSR
writes to CPUECTLR when disabling the prefetcher. (see SDEN for
details)

However, this patch implements the 2nd possible workaround which sets
the prefetcher into its most conservative mode, since this workaround
is generic.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775100

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Idb20d9928c986616cd5bedf40bb29d46d384cfd3
/rk3399_ARM-atf/docs/design/
H A Dcpu-specific-build-macros.rste16045de50e8b430e6601ba0e1e47097d8310f3d Fri Dec 03 17:27:33 UTC 2021 johpow01 <john.powell@arm.com> fix(errata): workaround for Cortex X2 erratum 2058056

Cortex X2 erratum 2058056 is a Cat B erratum present in the X2 core.
It applies to revisions r0p0, r1p0, and r2p0 and is still open.

There are 2 ways this workaround can be accomplished, the first of
which involves executing a few additional instructions around MSR
writes to CPUECTLR when disabling the prefetcher. (see SDEN for
details)

However, this patch implements the 2nd possible workaround which sets
the prefetcher into its most conservative mode, since this workaround
is generic.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775100

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Idb20d9928c986616cd5bedf40bb29d46d384cfd3
/rk3399_ARM-atf/lib/cpus/
H A Dcpu-ops.mke16045de50e8b430e6601ba0e1e47097d8310f3d Fri Dec 03 17:27:33 UTC 2021 johpow01 <john.powell@arm.com> fix(errata): workaround for Cortex X2 erratum 2058056

Cortex X2 erratum 2058056 is a Cat B erratum present in the X2 core.
It applies to revisions r0p0, r1p0, and r2p0 and is still open.

There are 2 ways this workaround can be accomplished, the first of
which involves executing a few additional instructions around MSR
writes to CPUECTLR when disabling the prefetcher. (see SDEN for
details)

However, this patch implements the 2nd possible workaround which sets
the prefetcher into its most conservative mode, since this workaround
is generic.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775100

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Idb20d9928c986616cd5bedf40bb29d46d384cfd3