ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Valentin Pistol <hidden> · 2012-09-13
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Will Deacon <hidden> · 2012-09-13
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Valentin Pistol <hidden> · 2012-09-14
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Will Deacon <hidden> · 2012-09-18
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Valentin Pistol <hidden> · 2012-10-09
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Will Deacon <hidden> · 2012-10-09
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Valentin Pistol <hidden> · 2012-10-15
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · Valentin Pistol <hidden> · 2012-10-16
ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 · dietmar.eggemann@arm.com (Dietmar Eggemann) · 2012-10-12

ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14

From: Will Deacon <hidden>
Date: 2012-09-18 10:04:39

On Fri, Sep 14, 2012 at 09:08:24AM +0100, Valentin Pistol wrote:

Is there a reliable way to determine that they are locked down?
Any particular register/bit I can check to confirm?

You can take a look at the DBGAUTHSTATUS register and try to determine the
signal values for SPNIDEN, DBGEN and NIDEN.

quoted

Completely untested patch below, please let me know how you get on...

Looks good, I'll give it a try.

Great. Let me know if it helps and, if so, I'll merge it.

Will