mirror of
https://github.com/AsahiLinux/u-boot
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085f8db6b9
U-Boot sets up the ACPI tables during startup. Rather than creating a new set, install the existing ones. Create a memory-map record to cover the tables. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* EFI application ACPI tables support
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*
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* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <efi_loader.h>
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#include <log.h>
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#include <mapmem.h>
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#include <acpi/acpi_table.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
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/*
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* Install the ACPI table as a configuration table.
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*
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* Return: status code
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*/
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efi_status_t efi_acpi_register(void)
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{
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ulong addr, start, end;
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efi_status_t ret;
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/* Mark space used for tables */
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start = ALIGN_DOWN(gd->arch.table_start, EFI_PAGE_MASK);
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end = ALIGN(gd->arch.table_end, EFI_PAGE_MASK);
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ret = efi_add_memory_map(start, end - start, EFI_ACPI_RECLAIM_MEMORY);
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if (ret != EFI_SUCCESS)
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return ret;
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if (gd->arch.table_start_high) {
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start = ALIGN_DOWN(gd->arch.table_start_high, EFI_PAGE_MASK);
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end = ALIGN(gd->arch.table_end_high, EFI_PAGE_MASK);
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ret = efi_add_memory_map(start, end - start,
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EFI_ACPI_RECLAIM_MEMORY);
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if (ret != EFI_SUCCESS)
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return ret;
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}
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addr = gd_acpi_start();
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printf("EFI using ACPI tables at %lx\n", addr);
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/* And expose them to our EFI payload */
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return efi_install_configuration_table(&acpi_guid,
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(void *)(ulong)addr);
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}
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