diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2020-03-25 15:50:38 +0000 |
|---|---|---|
| committer | Madhukar Pappireddy <madhukar.pappireddy@arm.com> | 2020-06-09 17:05:49 +0000 |
| commit | b4ad365a4642fb8b2ecb1df73dd69ee4caf58bd2 (patch) | |
| tree | d185a5907abda0403916cc24fe8dfe78bc54cf03 /include/drivers | |
| parent | 16af48e4cd4d99ccb8818c6f580b8184198ba0fe (diff) | |
| download | arm-trusted-firmware-b4ad365a4642fb8b2ecb1df73dd69ee4caf58bd2.tar.gz | |
GICv3: GIC-600: Detect GIC-600 at runtime
The only difference between GIC-500 and GIC-600 relevant to TF-A is the
differing power management sequence.
A certain GIC implementation is detectable at runtime, for instance by
checking the IIDR register. Let's add that test before initiating the
GIC-600 specific sequence, so the code can be used on both GIC-600 and
GIC-500 chips alike, without deciding on a GIC chip at compile time.
This means that the GIC-500 "driver" is now redundant. To allow minimal
platform support, add a switch to disable GIC-600 support.
Change-Id: I17ea97d9fb05874772ebaa13e6678b4ba3415557
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'include/drivers')
| -rw-r--r-- | include/drivers/arm/gicv3.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drivers/arm/gicv3.h b/include/drivers/arm/gicv3.h index 03596b96e..77dc350dd 100644 --- a/include/drivers/arm/gicv3.h +++ b/include/drivers/arm/gicv3.h @@ -222,6 +222,14 @@ #define TYPER_PPI_NUM_SHIFT U(27) #define TYPER_PPI_NUM_MASK U(0x1f) +/* GICR_IIDR bit definitions */ +#define IIDR_PRODUCT_ID_MASK 0xff000000 +#define IIDR_VARIANT_MASK 0x000f0000 +#define IIDR_REVISION_MASK 0x0000f000 +#define IIDR_IMPLEMENTER_MASK 0x00000fff +#define IIDR_MODEL_MASK (IIDR_PRODUCT_ID_MASK | \ + IIDR_IMPLEMENTER_MASK) + /******************************************************************************* * GICv3 and 3.1 CPU interface registers & constants ******************************************************************************/ |