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![Heinrich Schuchardt](/assets/img/avatar_default.png)
Provide an initialization routine for variable services. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
186 lines
4.2 KiB
C
186 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* EFI setup code
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*
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* Copyright (c) 2016-2018 Alexander Graf et al.
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*/
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#include <common.h>
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#include <bootm.h>
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#include <efi_loader.h>
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#define OBJ_LIST_NOT_INITIALIZED 1
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static efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED;
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/*
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* Allow unaligned memory access.
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*
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* This routine is overridden by architectures providing this feature.
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*/
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void __weak allow_unaligned(void)
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{
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}
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/**
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* efi_init_platform_lang() - define supported languages
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*
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* Set the PlatformLangCodes and PlatformLang variables.
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*
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* Return: status code
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*/
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static efi_status_t efi_init_platform_lang(void)
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{
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efi_status_t ret;
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efi_uintn_t data_size = 0;
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char *lang = CONFIG_EFI_PLATFORM_LANG_CODES;
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char *pos;
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/*
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* Variable PlatformLangCodes defines the language codes that the
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* machine can support.
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*/
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ret = EFI_CALL(efi_set_variable(L"PlatformLangCodes",
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&efi_global_variable_guid,
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EFI_VARIABLE_BOOTSERVICE_ACCESS |
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EFI_VARIABLE_RUNTIME_ACCESS,
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sizeof(CONFIG_EFI_PLATFORM_LANG_CODES),
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CONFIG_EFI_PLATFORM_LANG_CODES));
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if (ret != EFI_SUCCESS)
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goto out;
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/*
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* Variable PlatformLang defines the language that the machine has been
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* configured for.
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*/
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ret = EFI_CALL(efi_get_variable(L"PlatformLang",
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&efi_global_variable_guid,
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NULL, &data_size, &pos));
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if (ret == EFI_BUFFER_TOO_SMALL) {
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/* The variable is already set. Do not change it. */
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ret = EFI_SUCCESS;
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goto out;
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}
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/*
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* The list of supported languages is semicolon separated. Use the first
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* language to initialize PlatformLang.
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*/
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pos = strchr(lang, ';');
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if (pos)
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*pos = 0;
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ret = EFI_CALL(efi_set_variable(L"PlatformLang",
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&efi_global_variable_guid,
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EFI_VARIABLE_NON_VOLATILE |
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EFI_VARIABLE_BOOTSERVICE_ACCESS |
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EFI_VARIABLE_RUNTIME_ACCESS,
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1 + strlen(lang), lang));
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out:
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if (ret != EFI_SUCCESS)
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printf("EFI: cannot initialize platform language settings\n");
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return ret;
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}
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/**
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* efi_init_obj_list() - Initialize and populate EFI object list
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*
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* Return: status code
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*/
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efi_status_t efi_init_obj_list(void)
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{
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u64 os_indications_supported = 0; /* None */
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efi_status_t ret = EFI_SUCCESS;
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/* Initialize once only */
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if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
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return efi_obj_list_initialized;
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/* Allow unaligned memory access */
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allow_unaligned();
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/* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
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switch_to_non_secure_mode();
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/* Initialize variable services */
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ret = efi_init_variables();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Define supported languages */
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ret = efi_init_platform_lang();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Indicate supported features */
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ret = EFI_CALL(efi_set_variable(L"OsIndicationsSupported",
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&efi_global_variable_guid,
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EFI_VARIABLE_BOOTSERVICE_ACCESS |
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EFI_VARIABLE_RUNTIME_ACCESS,
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sizeof(os_indications_supported),
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&os_indications_supported));
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if (ret != EFI_SUCCESS)
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goto out;
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/* Indicate supported runtime services */
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ret = efi_init_runtime_supported();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Initialize system table */
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ret = efi_initialize_system_table();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Initialize root node */
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ret = efi_root_node_register();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Initialize EFI driver uclass */
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ret = efi_driver_init();
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if (ret != EFI_SUCCESS)
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goto out;
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ret = efi_console_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#ifdef CONFIG_PARTITIONS
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ret = efi_disk_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#endif
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#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
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ret = efi_gop_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#endif
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#ifdef CONFIG_NET
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ret = efi_net_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#endif
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#ifdef CONFIG_GENERATE_ACPI_TABLE
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ret = efi_acpi_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#endif
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#ifdef CONFIG_GENERATE_SMBIOS_TABLE
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ret = efi_smbios_register();
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if (ret != EFI_SUCCESS)
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goto out;
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#endif
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ret = efi_watchdog_register();
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if (ret != EFI_SUCCESS)
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goto out;
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/* Initialize EFI runtime services */
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ret = efi_reset_system_init();
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if (ret != EFI_SUCCESS)
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goto out;
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out:
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efi_obj_list_initialized = ret;
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return ret;
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}
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