diff options
| author | Simon Glass <sjg@chromium.org> | 2020-09-22 12:45:12 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-09-25 11:27:18 +0800 |
| commit | 7764a8481c411c2bf06d9588a6f782e899e3d75b (patch) | |
| tree | 5ab0e2bc54368d511232239fa0e737d5e4640255 /arch/x86/include | |
| parent | 15403289e5ddb0d777f95f5836add1316e2d9ae2 (diff) | |
| download | u-boot-7764a8481c411c2bf06d9588a6f782e899e3d75b.tar.gz | |
x86: acpi: Add PCT and PTC tables
These are needed for the CPU tables. Add them into an x86-specific file
since we do not support them on sandbox, or include tests.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/acpigen.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpigen.h b/arch/x86/include/asm/acpigen.h new file mode 100644 index 0000000000..c531dd61d5 --- /dev/null +++ b/arch/x86/include/asm/acpigen.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Generation of x86-specific ACPI tables + * + * Copyright 2020 Google LLC + */ + +#ifndef __ASM_ACPIGEN_H__ +#define __ASM_ACPIGEN_H__ + +struct acpi_ctx; + +/** + * acpigen_write_empty_pct() - Write an empty PCT + * + * See ACPI v6.3 section 8.4.6.1: _PCT (Performance Control) + * + * This writes an empty table so that CPU performance works as expected + * + * @ctx: ACPI context pointer + */ +void acpigen_write_empty_pct(struct acpi_ctx *ctx); + +/** + * acpigen_write_empty_ptc() - Write an empty PTC + * + * See ACPI v6.3 section 8.4.5.1: _PTC (Processor Throttling Control) + * + * This writes an empty table so that CPU performance works as expected + * + * @ctx: ACPI context pointer + */ +void acpigen_write_empty_ptc(struct acpi_ctx *ctx); + +#endif /* __ASM_ACPI_H__ */ |