path: root/bl1/aarch64/bl1_entrypoint.S
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authorAndrew Thoelke <andrew.thoelke@arm.com>2014-04-28 12:32:02 +0100
committerAndrew Thoelke <andrew.thoelke@arm.com>2014-05-07 11:29:50 +0100
commit7935d0a59d439c993b79814ab414d37e4a90d9a6 (patch)
treeb441893641316f785bf782b24ac8877252eb8afb /bl1/aarch64/bl1_entrypoint.S
parent2f5dcfef1db42f3b073ae657f8a94925abecd768 (diff)
Access system registers directly in assembler
Instead of using the system register helper functions to read or write system registers, assembler coded functions should use MRS/MSR instructions. This results in faster and more compact code. This change replaces all usage of the helper functions with direct register accesses. Change-Id: I791d5f11f257010bb3e6a72c6c5ab8779f1982b3
Diffstat (limited to 'bl1/aarch64/bl1_entrypoint.S')
1 files changed, 2 insertions, 2 deletions
diff --git a/bl1/aarch64/bl1_entrypoint.S b/bl1/aarch64/bl1_entrypoint.S
index e25386f74d..c081af48fe 100644
--- a/bl1/aarch64/bl1_entrypoint.S
+++ b/bl1/aarch64/bl1_entrypoint.S
@@ -97,10 +97,10 @@ _wait_for_entrypoint:
* their turn to be woken up
* ---------------------------------------------
- bl read_mpidr
+ mrs x0, mpidr_el1
bl platform_get_entrypoint
cbnz x0, _do_warm_boot
- bl read_mpidr
+ mrs x0, mpidr_el1
bl platform_is_primary_cpu
cbnz x0, _do_cold_boot