- 15 Jan, 2018 1 commit
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Dimitris Papastamos authored
If AMU is not supported by the hardware but it is enabled in Trusted Firmware, the console will be spammed with warnings every time a CPU is brought up with a CPU ON call. Remove the warning message as this is more in line with how other extensions like SPE and SVE are handled. Change-Id: Iba6d367e4d1375ab554d23d2eaceab3ae1362c5a Signed-off-by:Dimitris Papastamos <dimitris.papastamos@arm.com>
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- 11 Jan, 2018 3 commits
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Dimitris Papastamos authored
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 authored
Add some AMU helper functions to allow configuring, reading and writing of the Group 0 and Group 1 counters. Documentation for these helpers will come in a separate patch. Change-Id: I656e070d2dae830c22414f694aa655341d4e2c40 Signed-off-by: -
Dimitris Papastamos authored
A new platform macro `PLAT_AMU_GROUP1_COUNTERS_MASK` controls which group 1 counters should be enabled. The maximum number of group 1 counters supported by AMUv1 is 16 so the mask can be at most 0xffff. If the platform does not define this mask, no group 1 counters are enabled. A related platform macro `PLAT_AMU_GROUP1_NR_COUNTERS` is used by generic code to allocate an array to save and restore the counters on CPU suspend. Change-Id: I6d135badf4846292de931a43bb563077f42bb47b Signed-off-by:
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- 29 Nov, 2017 2 commits
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Dimitris Papastamos authored
The `ENABLE_AMU` build option can be used to enable the architecturally defined AMU counters. At present, there is no support for the auxiliary counter group. Change-Id: Ifc7532ef836f83e629f2a146739ab61e75c4abc8 Signed-off-by: -
Dimitris Papastamos authored
The `ENABLE_AMU` build option can be used to enable the architecturally defined AMU counters. At present, there is no support for the auxiliary counter group. Change-Id: I7ea0c0a00327f463199d1b0a481f01dadb09d312 Signed-off-by:
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