diff options
| author | Varun Wadekar <vwadekar@nvidia.com> | 2016-02-22 11:09:41 -0800 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2017-02-23 10:50:31 -0800 |
| commit | 9f1c5dd19b7596db74db84e2ac58c31794fb20b5 (patch) | |
| tree | f9f81bd0b270df39ac71e8d5bb077d6c56765b1e /lib/cpus | |
| parent | 990c1e0113bdcbd17bab2954d2c216001503c509 (diff) | |
cpus: denver: disable DCO operations from platform code
This patch moves the code to disable DCO operations out from common
CPU files. This allows the platform code to call thsi API as and
when required. There are certain CPU power down states which require
the DCO to be kept ON and platforms can decide selectively now.
Change-Id: Icb946fe2545a7d8c5903c420d1ee169c4921a2d1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'lib/cpus')
| -rw-r--r-- | lib/cpus/aarch64/denver.S | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/lib/cpus/aarch64/denver.S b/lib/cpus/aarch64/denver.S index c3851556..3e238a1c 100644 --- a/lib/cpus/aarch64/denver.S +++ b/lib/cpus/aarch64/denver.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: @@ -35,6 +35,8 @@ #include <cpu_macros.S> #include <plat_macros.S> + .global denver_disable_dco + /* --------------------------------------------- * Disable debug interfaces * --------------------------------------------- @@ -111,22 +113,6 @@ func denver_core_pwr_dwn mov x19, x30 - /* ---------------------------------------------------- - * We enter the 'core power gated with ARM state not - * retained' power state during CPU power down. We let - * DCO know that we expect to enter this power state - * by writing to the ACTLR_EL1 register. - * ---------------------------------------------------- - */ - mov x0, #DENVER_CPU_STATE_POWER_DOWN - msr actlr_el1, x0 - - /* --------------------------------------------- - * Force DCO to be quiescent - * --------------------------------------------- - */ - bl denver_disable_dco - /* --------------------------------------------- * Force the debug interfaces to be quiescent * --------------------------------------------- |