AMU: Add hooks to save/restore AMU context

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LuminaSensum / arm-trusted-firmware

Browse code AMU: Add hooks to save/restore AMU context On some systems, the AMU counters might reset to 0 when a CPU powerdown happens. This behaviour conflicts with the intended use-case of AMU as lower ELs are only expected to see non-decreasing counter values. Change-Id: If25519965d4e6e47e09225d0e732947986cbb5ec Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com> WIP_v2.3-LS master v2.2-LS v2.4-LS v2.3-rc2 v2.3-rc1 v2.3-rc0 v2.3 v2.2-rc2 v2.2-rc1 v2.2-rc0 v2.2 v2.1-rc1 v2.1-rc0 v2.1 v2.0-rc0 v2.0 v1.6-rc1 v1.6-rc0 v1.6 v1.5-rc3 v1.5-rc2 v1.5-rc1 v1.5-rc0 v1.5
1 parent 0767d50 commit b6eb39327c5b009bc0bbecdb6867d8bf7c05f2fd Dimitris Papastamos authored on 28 Nov 2017

Browse code

On some systems, the AMU counters might reset to 0 when a CPU
powerdown happens.  This behaviour conflicts with the intended
use-case of AMU as lower ELs are only expected to see non-decreasing
counter values.

Change-Id: If25519965d4e6e47e09225d0e732947986cbb5ec
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

WIP_v2.3-LS master v2.2-LS v2.4-LS v2.3-rc2 v2.3-rc1 v2.3-rc0 v2.3 v2.2-rc2 v2.2-rc1 v2.2-rc0 v2.2 v2.1-rc1 v2.1-rc0 v2.1 v2.0-rc0 v2.0 v1.6-rc1 v1.6-rc0 v1.6 v1.5-rc3 v1.5-rc2 v1.5-rc1 v1.5-rc0 v1.5

1 parent 0767d50 commit b6eb39327c5b009bc0bbecdb6867d8bf7c05f2fd

Dimitris Papastamos authored on 28 Nov 2017

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Ignore Space Show notes View include/lib/aarch32/arch_helpers.h

Ignore Space Show notes View lib/extensions/amu/aarch32/amu.c

Ignore Space Show notes View lib/extensions/amu/aarch64/amu.c

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