[PATCH v4 18/35] drivers/cpu: Add generic armv8 cpu driver

[Simon Glass]

On Wed, 18 Sept 2024 at 17:22, Patrick Rudolph
<patrick.rudolph at 9elements.com> wrote:
>
> Add a generic driver that binds to armv8 CPU nodes. The generic driver allows
> - to enumerate CPUs present in a system, even when no other driver binds it
> - generates ACPI SSDT code for each CPU
> - Fill the ACPI MADT table (implemented in a follow up patch)
>
> The newly introduced code could also be reused on other CPU drivers that are
> compatible with armv8.
>
> TEST: Booted on QEMU sbsa and verify the driver binds to CPU nodes.
>       Confirmed with FWTS that all ACPI processor devices are present.
>
> Signed-off-by: Patrick Rudolph <patrick.rudolph at 9elements.com>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: Simon Glass <sjg at chromium.org>
> ---
> Changelog v4:
> - Export armv8_cpu_fill_ssdt to use it in other CPU drivers
>
> ---
>  drivers/cpu/Kconfig     |  6 ++++
>  drivers/cpu/Makefile    |  2 ++
>  drivers/cpu/armv8_cpu.c | 73 +++++++++++++++++++++++++++++++++++++++++
>  drivers/cpu/armv8_cpu.h | 21 ++++++++++++
>  4 files changed, 102 insertions(+)
>  create mode 100644 drivers/cpu/armv8_cpu.c
>  create mode 100644 drivers/cpu/armv8_cpu.h

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