[PATCH v9 21/37] arm: lib: Add GICV2 driver

[Simon Glass]

On Wed, 16 Oct 2024 at 00:16, Patrick Rudolph
<patrick.rudolph at 9elements.com> wrote:
>
> Add a generic GICV2 driver that:
> - parses the DT and generates the ACPI MADT subtables
> - implement of_xlate() and allows irq_get_by_index() to return the
>   correct interrupt mappings
>
> Map DT interrupts to ARM GIC interrupts as follows:
>
> - Interrupt numbers ID32-ID1019 are used for SPIs
> - ID0-ID15 are used for SGIs
> - ID16-ID31 are used for PPIs
>
> TEST: Booted on QEMU raspb4 using GICV2 driver model generated MADT.
>
> Signed-off-by: Patrick Rudolph <patrick.rudolph at 9elements.com>
> ---
> Changelog v6:
> - Update header order
> Changelog v9:
> - Map SPI interrupts to ID32+
> - Map PPI interrupts to ID16+
> ---
>  arch/arm/Kconfig      |  7 ++++
>  arch/arm/lib/Makefile |  1 +
>  arch/arm/lib/gic-v2.c | 89 +++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 97 insertions(+)
>  create mode 100644 arch/arm/lib/gic-v2.c

Reviewed-by: Simon Glass <sjg at chromium.org>