From 5f8359188008aff6a2a8e936003827ae771ed99f Mon Sep 17 00:00:00 2001 From: Jeenu Viswambharan Date: Tue, 31 Jul 2018 16:13:33 +0100 Subject: AArch64: Enable MPAM for lower ELs Memory Partitioning And Monitoring is an Armv8.4 feature that enables various memory system components and resources to define partitions. Software running at various ELs can then assign themselves to the desired partition to control their performance aspects. With this patch, when ENABLE_MPAM_FOR_LOWER_ELS is set to 1, EL3 allows lower ELs to access their own MPAM registers without trapping to EL3. This patch however doesn't make use of partitioning in EL3; platform initialisation code should configure and use partitions in EL3 if required. Change-Id: I5a55b6771ccaa0c1cffc05543d2116b60cbbcdcd Co-authored-by: James Morse Signed-off-by: Jeenu Viswambharan --- bl31/bl31.mk | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'bl31') diff --git a/bl31/bl31.mk b/bl31/bl31.mk index bff96538..c99b637d 100644 --- a/bl31/bl31.mk +++ b/bl31/bl31.mk @@ -63,6 +63,10 @@ ifeq (${ENABLE_SVE_FOR_NS},1) BL31_SOURCES += lib/extensions/sve/sve.c endif +ifeq (${ENABLE_MPAM_FOR_LOWER_ELS},1) +BL31_SOURCES += lib/extensions/mpam/mpam.c +endif + ifeq (${WORKAROUND_CVE_2017_5715},1) BL31_SOURCES += lib/cpus/aarch64/wa_cve_2017_5715_bpiall.S \ lib/cpus/aarch64/wa_cve_2017_5715_mmu.S -- cgit v1.2.3