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https://github.com/brain-hackers/u-boot-brain
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40 lines
889 B
C
40 lines
889 B
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Generation of ACPI (Advanced Configuration and Power Interface) tables
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*
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* Copyright 2019 Google LLC
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* Mostly taken from coreboot
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*/
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#define LOG_CATEGORY LOGC_ACPI
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#include <common.h>
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#include <dm.h>
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#include <acpi/acpigen.h>
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#include <dm/acpi.h>
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u8 *acpigen_get_current(struct acpi_ctx *ctx)
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{
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return ctx->current;
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}
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void acpigen_emit_byte(struct acpi_ctx *ctx, uint data)
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{
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*(u8 *)ctx->current++ = data;
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}
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void acpigen_emit_word(struct acpi_ctx *ctx, uint data)
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{
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acpigen_emit_byte(ctx, data & 0xff);
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acpigen_emit_byte(ctx, (data >> 8) & 0xff);
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}
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void acpigen_emit_dword(struct acpi_ctx *ctx, uint data)
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{
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/* Output the value in little-endian format */
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acpigen_emit_byte(ctx, data & 0xff);
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acpigen_emit_byte(ctx, (data >> 8) & 0xff);
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acpigen_emit_byte(ctx, (data >> 16) & 0xff);
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acpigen_emit_byte(ctx, (data >> 24) & 0xff);
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}
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