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| author | Andrew Thoelke <andrew.thoelke@arm.com> | 2014-04-28 12:32:02 +0100 |
|---|---|---|
| committer | Andrew Thoelke <andrew.thoelke@arm.com> | 2014-05-07 11:29:50 +0100 |
| commit | 7935d0a59d439c993b79814ab414d37e4a90d9a6 (patch) | |
| tree | b441893641316f785bf782b24ac8877252eb8afb /bl1/aarch64/bl1_entrypoint.S | |
| parent | 2f5dcfef1db42f3b073ae657f8a94925abecd768 (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')
| -rw-r--r-- | bl1/aarch64/bl1_entrypoint.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/bl1/aarch64/bl1_entrypoint.S b/bl1/aarch64/bl1_entrypoint.S index e25386f..c081af4 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 |