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83a2f4a8d2
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@9elements.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
21 lines
470 B
C
21 lines
470 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2024 9elements GmbH
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*/
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#include <dm/acpi.h>
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#include <dm/device.h>
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#ifndef _ARMV8_CPU_H_
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#define _ARMV8_CPU_H_
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/**
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* armv8_cpu_fill_ssdt() - Fill the SSDT
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* Parses the FDT and writes the SSDT nodes.
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*
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* @dev: cpu device to generate ACPI tables for
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* @ctx: ACPI context pointer
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* @return: 0 if OK, or a negative error code.
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*/
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int armv8_cpu_fill_ssdt(const struct udevice *dev, struct acpi_ctx *ctx);
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#endif |