diff options
| author | Scott Williams <scwilliams@nvidia.com> | 2012-03-08 09:35:35 -0800 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-06-26 11:56:21 +0530 |
| commit | 46b5734f5a82c8d6c55dbfeaa75dadb69fb1a639 (patch) | |
| tree | 96edb746b84d711ab77498c3dc209721cf2dbc14 /arch/arm/mach-tegra/sleep-t3.S | |
| parent | f7edf53858d4efdf3c3d61741cd80f1cf6228d26 (diff) | |
ARM: tegra: power: Add support for ARM debug arch v7.1
Bug 885613
Change-Id: I820065478b1a714d42be998fa1bf472813d147ab
Signed-off-by: Scott Williams <scwilliams@nvidia.com>
Reviewed-on: http://git-master/r/86461
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/sleep-t3.S')
| -rw-r--r-- | arch/arm/mach-tegra/sleep-t3.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep-t3.S b/arch/arm/mach-tegra/sleep-t3.S index ed697bf3af96..78f97d7d9c80 100644 --- a/arch/arm/mach-tegra/sleep-t3.S +++ b/arch/arm/mach-tegra/sleep-t3.S @@ -614,6 +614,18 @@ tegra3_enter_sleep: dsb ldr r0, [r6, r2] /* memory barrier */ +#ifndef CONFIG_ARM_SAVE_DEBUG_CONTEXT_NO_LOCK + /* Set the Debug OS Double Lock for Debug Arch v7.1 or greater. + With this lock set, the debugger is completely locked out. + Disable this to debug WFI/powergating failures. + */ + mrc p15, 0, r3, c0, c1, 2 @ ID_DFR0 + and r3, r3, #0xF @ coprocessor debug model + cmp r3, #5 @ debug arch >= v7.1? + + mov32 r1, 0xC5ACCE55 + mcrge p14, 0, r1, c1, c3, 4 @ DBGOSDLR +#endif halted: isb dsb |