lib/efi_loader/efi_setup.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  EFI setup code
   4  *
   5  *  Copyright (c) 2016-2018 Alexander Graf et al.
   6  */
   7
   8 #include <common.h>
   9 #include <efi_loader.h>
  10
  11 #define OBJ_LIST_NOT_INITIALIZED 1
  12
  13 /* Language code for American English according to RFC 4646 */
  14 #define EN_US L"en-US"
  15
  16 static efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED;
  17
  18 /* Initialize and populate EFI object list */
  19 efi_status_t efi_init_obj_list(void)
  20 {
  21         efi_status_t ret = EFI_SUCCESS;
  22
  23         /*
  24          * Variable PlatformLang defines the language that the machine has been
  25          * configured for.
  26          */
  27         ret = EFI_CALL(efi_set_variable(L"PlatformLang",
  28                                         &efi_global_variable_guid,
  29                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
  30                                         EFI_VARIABLE_RUNTIME_ACCESS,
  31                                         sizeof(EN_US), EN_US));
  32         if (ret != EFI_SUCCESS)
  33                 goto out;
  34
  35         /*
  36          * Variable PlatformLangCodes defines the language codes that the
  37          * machine can support.
  38          */
  39         ret = EFI_CALL(efi_set_variable(L"PlatformLangCodes",
  40                                         &efi_global_variable_guid,
  41                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
  42                                         EFI_VARIABLE_RUNTIME_ACCESS,
  43                                         sizeof(EN_US), EN_US));
  44         if (ret != EFI_SUCCESS)
  45                 goto out;
  46
  47         /* Initialize once only */
  48         if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
  49                 return efi_obj_list_initialized;
  50
  51         /* Initialize system table */
  52         ret = efi_initialize_system_table();
  53         if (ret != EFI_SUCCESS)
  54                 goto out;
  55
  56         /* Initialize root node */
  57         ret = efi_root_node_register();
  58         if (ret != EFI_SUCCESS)
  59                 goto out;
  60
  61         /* Initialize EFI driver uclass */
  62         ret = efi_driver_init();
  63         if (ret != EFI_SUCCESS)
  64                 goto out;
  65
  66         ret = efi_console_register();
  67         if (ret != EFI_SUCCESS)
  68                 goto out;
  69 #ifdef CONFIG_PARTITIONS
  70         ret = efi_disk_register();
  71         if (ret != EFI_SUCCESS)
  72                 goto out;
  73 #endif
  74 #if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
  75         ret = efi_gop_register();
  76         if (ret != EFI_SUCCESS)
  77                 goto out;
  78 #endif
  79 #ifdef CONFIG_NET
  80         ret = efi_net_register();
  81         if (ret != EFI_SUCCESS)
  82                 goto out;
  83 #endif
  84 #ifdef CONFIG_GENERATE_ACPI_TABLE
  85         ret = efi_acpi_register();
  86         if (ret != EFI_SUCCESS)
  87                 goto out;
  88 #endif
  89 #ifdef CONFIG_GENERATE_SMBIOS_TABLE
  90         ret = efi_smbios_register();
  91         if (ret != EFI_SUCCESS)
  92                 goto out;
  93 #endif
  94         ret = efi_watchdog_register();
  95         if (ret != EFI_SUCCESS)
  96                 goto out;
  97
  98         /* Initialize EFI runtime services */
  99         ret = efi_reset_system_init();
 100         if (ret != EFI_SUCCESS)
 101                 goto out;
 102
 103 out:
 104         efi_obj_list_initialized = ret;
 105         return ret;
 106 }