Re: [PATCH v4 18/35] drivers/cpu: Add generic armv8 cpu driver
From: Simon Glass
Date: Thu Sep 19 2024 - 10:12:14 EST
On Wed, 18 Sept 2024 at 17:22, Patrick Rudolph
<patrick.rudolph@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx>
> Cc: Tom Rini <trini@xxxxxxxxxxxx>
> Cc: Simon Glass <sjg@xxxxxxxxxxxx>
> ---
> 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@xxxxxxxxxxxx>