diff options
| author | Sai Pavan Boddu <sai.pavan.boddu@xilinx.com> | 2020-02-24 15:09:22 +0530 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-02-28 16:14:57 +0000 |
| commit | 11411489da890ae40c182be7fa745c647e8ce399 (patch) | |
| tree | d5dfccb3bf091f06dede10850f31029440ab0104 /hw/intc/arm_gic_common.c | |
| parent | 5df2cfbc8b61e0c5d050a69814f713d2ba045ec5 (diff) | |
arm_gic: Mask the un-supported priority bits
The GICv2 allows the implementation to implement a variable number
of priority bits; unimplemented bits in the priority registers
are read as zeros, writes ignored. We were previously always
implementing a full 8 bits of priority, which is allowed but not
what the real hardware typically does (which is usually to have
4 or 5 bits of priority).
Add a new device property to allow the number of implemented
property bits to be specified.
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Message-id: 1582537164-764-2-git-send-email-sai.pavan.boddu@xilinx.com
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: improved commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/intc/arm_gic_common.c')
| -rw-r--r-- | hw/intc/arm_gic_common.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/intc/arm_gic_common.c b/hw/intc/arm_gic_common.c index e6c4fe7a5a..7b44d5625b 100644 --- a/hw/intc/arm_gic_common.c +++ b/hw/intc/arm_gic_common.c @@ -357,6 +357,7 @@ static Property arm_gic_common_properties[] = { DEFINE_PROP_BOOL("has-security-extensions", GICState, security_extn, 0), /* True if the GIC should implement the virtualization extensions */ DEFINE_PROP_BOOL("has-virtualization-extensions", GICState, virt_extn, 0), + DEFINE_PROP_UINT32("num-priority-bits", GICState, n_prio_bits, 8), DEFINE_PROP_END_OF_LIST(), }; |