commit b6eb39327c5b009bc0bbecdb6867d8bf7c05f2fd
author Dimitris Papastamos <dimitris.papastamos@arm.com> Tue Nov 28 13:47:06 2017 +0000
committer Dimitris Papastamos <dimitris.papastamos@arm.com> Thu Jan 11 14:36:45 2018 +0000
tree 9c92eaf9474d4db1397295349b2354bf4183c9a3
parent 0767d50e699d3d9cb827172dd7742618d37aabe0

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>

include/lib/aarch32/arch_helpers.h

diff --git a/include/lib/aarch32/arch_helpers.h b/include/lib/aarch32/arch_helpers.h
index 0230195..beae5d0 100644
--- a/include/lib/aarch32/arch_helpers.h
+++ b/include/lib/aarch32/arch_helpers.h
@@ -287,6 +287,11 @@
 DEFINE_COPROCR_RW_FUNCS(amcntenclr0, AMCNTENCLR0)
 DEFINE_COPROCR_RW_FUNCS(amcntenclr1, AMCNTENCLR1)
 
+DEFINE_COPROCR_RW_FUNCS_64(amevcntr00, AMEVCNTR00)
+DEFINE_COPROCR_RW_FUNCS_64(amevcntr01, AMEVCNTR01)
+DEFINE_COPROCR_RW_FUNCS_64(amevcntr02, AMEVCNTR02)
+DEFINE_COPROCR_RW_FUNCS_64(amevcntr03, AMEVCNTR03)
+
 /*
  * TLBI operation prototypes
  */