Opened on Feb 21, 2019 at 7:23:32 PM

Closed on Feb 22, 2019 at 7:29:53 AM

#3699 closed defect (fixed)

Wrong system register specified for ARM virtual timer value retrieval

Reported by: Kinsey Moore Owned by: Sebastian Huber
Priority: normal Milestone: 5.1
Component: arch/arm Version: 5
Severity: normal Keywords: gpt, timer, arm
Cc: Blocked By:
Blocking:

Description

In arm_cp15_get_counter_pl1_virtual_timer_value() in cpukit/score/cpu/arm/include/libcpu/arm-cp15.h, the system register specified by "p15, 0, %[val], c14, c2, 0" is actually the system register for the physical timer value. This should be "p15, 0, %[val], c14, c3, 0" for the virtual timer value as used in the setter.

Change History (2)

comment:1 Changed on Feb 22, 2019 at 7:27:47 AM by Sebastian Huber

Milestone: → 5.1
Owner: set to Sebastian Huber
Status: new → accepted
Version: → 5

comment:2 Changed on Feb 22, 2019 at 7:29:53 AM by Kinsey Moore <nyphbl8d@…>

Resolution: → fixed
Status: accepted → closed

In 7abc497/rtems:

bsps/arm: Fix system register for virtual timer

The system register in use for retrieval of the virtual timer value was
mistakenly copied from the physical timer value retrieval function.
Virtual timer value retrieval should use the same system register as the
virtual timer value setter.

Close #3699.

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