diff options
Diffstat (limited to 'roms/u-boot/lib/efi_loader/efi_setup.c')
| -rw-r--r-- | roms/u-boot/lib/efi_loader/efi_setup.c | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/roms/u-boot/lib/efi_loader/efi_setup.c b/roms/u-boot/lib/efi_loader/efi_setup.c new file mode 100644 index 000000000..a2338d74a --- /dev/null +++ b/roms/u-boot/lib/efi_loader/efi_setup.c @@ -0,0 +1,341 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * EFI setup code + * + * Copyright (c) 2016-2018 Alexander Graf et al. + */ + +#define LOG_CATEGORY LOGC_EFI + +#include <common.h> +#include <efi_loader.h> +#include <efi_variable.h> +#include <log.h> + +#define OBJ_LIST_NOT_INITIALIZED 1 + +efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED; + +/* + * Allow unaligned memory access. + * + * This routine is overridden by architectures providing this feature. + */ +void __weak allow_unaligned(void) +{ +} + +/** + * efi_init_platform_lang() - define supported languages + * + * Set the PlatformLangCodes and PlatformLang variables. + * + * Return: status code + */ +static efi_status_t efi_init_platform_lang(void) +{ + efi_status_t ret; + efi_uintn_t data_size = 0; + char *lang = CONFIG_EFI_PLATFORM_LANG_CODES; + char *pos; + + /* + * Variable PlatformLangCodes defines the language codes that the + * machine can support. + */ + ret = efi_set_variable_int(L"PlatformLangCodes", + &efi_global_variable_guid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS | + EFI_VARIABLE_READ_ONLY, + sizeof(CONFIG_EFI_PLATFORM_LANG_CODES), + CONFIG_EFI_PLATFORM_LANG_CODES, false); + if (ret != EFI_SUCCESS) + goto out; + + /* + * Variable PlatformLang defines the language that the machine has been + * configured for. + */ + ret = efi_get_variable_int(L"PlatformLang", + &efi_global_variable_guid, + NULL, &data_size, &pos, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) { + /* The variable is already set. Do not change it. */ + ret = EFI_SUCCESS; + goto out; + } + + /* + * The list of supported languages is semicolon separated. Use the first + * language to initialize PlatformLang. + */ + pos = strchr(lang, ';'); + if (pos) + *pos = 0; + + ret = efi_set_variable_int(L"PlatformLang", + &efi_global_variable_guid, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 1 + strlen(lang), lang, false); +out: + if (ret != EFI_SUCCESS) + printf("EFI: cannot initialize platform language settings\n"); + return ret; +} + +#ifdef CONFIG_EFI_SECURE_BOOT +/** + * efi_init_secure_boot - initialize secure boot state + * + * Return: status code + */ +static efi_status_t efi_init_secure_boot(void) +{ + efi_guid_t signature_types[] = { + EFI_CERT_SHA256_GUID, + EFI_CERT_X509_GUID, + }; + efi_status_t ret; + + ret = efi_set_variable_int(L"SignatureSupport", + &efi_global_variable_guid, + EFI_VARIABLE_READ_ONLY | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + sizeof(signature_types), + &signature_types, false); + if (ret != EFI_SUCCESS) + printf("EFI: cannot initialize SignatureSupport variable\n"); + + return ret; +} +#else +static efi_status_t efi_init_secure_boot(void) +{ + return EFI_SUCCESS; +} +#endif /* CONFIG_EFI_SECURE_BOOT */ + +/** + * efi_init_capsule - initialize capsule update state + * + * Return: status code + */ +static efi_status_t efi_init_capsule(void) +{ + efi_status_t ret = EFI_SUCCESS; + + if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_UPDATE)) { + ret = efi_set_variable_int(L"CapsuleMax", + &efi_guid_capsule_report, + EFI_VARIABLE_READ_ONLY | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 22, L"CapsuleFFFF", false); + if (ret != EFI_SUCCESS) + printf("EFI: cannot initialize CapsuleMax variable\n"); + } + + return ret; +} + +/** + * efi_init_os_indications() - indicate supported features for OS requests + * + * Set the OsIndicationsSupported variable. + * + * Return: status code + */ +static efi_status_t efi_init_os_indications(void) +{ + u64 os_indications_supported = 0; + + if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT)) + os_indications_supported |= + EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED; + + if (IS_ENABLED(CONFIG_EFI_CAPSULE_ON_DISK)) + os_indications_supported |= + EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED; + + if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT)) + os_indications_supported |= + EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED; + + return efi_set_variable_int(L"OsIndicationsSupported", + &efi_global_variable_guid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS | + EFI_VARIABLE_READ_ONLY, + sizeof(os_indications_supported), + &os_indications_supported, false); +} + + +/** + * efi_clear_os_indications() - clear OsIndications + * + * Clear EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED + */ +static efi_status_t efi_clear_os_indications(void) +{ + efi_uintn_t size; + u64 os_indications; + efi_status_t ret; + + size = sizeof(os_indications); + ret = efi_get_variable_int(L"OsIndications", &efi_global_variable_guid, + NULL, &size, &os_indications, NULL); + if (ret != EFI_SUCCESS) + os_indications = 0; + else + os_indications &= + ~EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED; + ret = efi_set_variable_int(L"OsIndications", &efi_global_variable_guid, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + sizeof(os_indications), &os_indications, + false); + if (ret != EFI_SUCCESS) + log_err("Setting %ls failed\n", L"OsIndications"); + return ret; +} + +/** + * efi_init_obj_list() - Initialize and populate EFI object list + * + * Return: status code + */ +efi_status_t efi_init_obj_list(void) +{ + efi_status_t r, ret = EFI_SUCCESS; + + /* Initialize once only */ + if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED) + return efi_obj_list_initialized; + + /* Allow unaligned memory access */ + allow_unaligned(); + + /* Initialize root node */ + ret = efi_root_node_register(); + if (ret != EFI_SUCCESS) + goto out; + + ret = efi_console_register(); + if (ret != EFI_SUCCESS) + goto out; + +#ifdef CONFIG_PARTITIONS + ret = efi_disk_register(); + if (ret != EFI_SUCCESS) + goto out; +#endif + if (IS_ENABLED(CONFIG_EFI_RNG_PROTOCOL)) { + ret = efi_rng_register(); + if (ret != EFI_SUCCESS) + goto out; + } + + /* Initialize variable services */ + ret = efi_init_variables(); + if (ret != EFI_SUCCESS) + goto out; + + /* Define supported languages */ + ret = efi_init_platform_lang(); + if (ret != EFI_SUCCESS) + goto out; + + /* Indicate supported features */ + ret = efi_init_os_indications(); + if (ret != EFI_SUCCESS) + goto out; + + /* Initialize system table */ + ret = efi_initialize_system_table(); + if (ret != EFI_SUCCESS) + goto out; + + if (IS_ENABLED(CONFIG_EFI_ESRT)) { + ret = efi_esrt_register(); + if (ret != EFI_SUCCESS) + goto out; + } + + if (IS_ENABLED(CONFIG_EFI_TCG2_PROTOCOL)) { + ret = efi_tcg2_register(); + if (ret != EFI_SUCCESS) + goto out; + } + + /* Secure boot */ + ret = efi_init_secure_boot(); + if (ret != EFI_SUCCESS) + goto out; + + /* Indicate supported runtime services */ + ret = efi_init_runtime_supported(); + if (ret != EFI_SUCCESS) + goto out; + + /* Initialize EFI driver uclass */ + ret = efi_driver_init(); + if (ret != EFI_SUCCESS) + goto out; + + if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT)) { + ret = efi_load_capsule_drivers(); + if (ret != EFI_SUCCESS) + goto out; + } + +#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO) + ret = efi_gop_register(); + if (ret != EFI_SUCCESS) + goto out; +#endif +#ifdef CONFIG_NET + ret = efi_net_register(); + if (ret != EFI_SUCCESS) + goto out; +#endif +#ifdef CONFIG_GENERATE_ACPI_TABLE + ret = efi_acpi_register(); + if (ret != EFI_SUCCESS) + goto out; +#endif +#ifdef CONFIG_GENERATE_SMBIOS_TABLE + ret = efi_smbios_register(); + if (ret != EFI_SUCCESS) + goto out; +#endif + ret = efi_watchdog_register(); + if (ret != EFI_SUCCESS) + goto out; + + ret = efi_init_capsule(); + if (ret != EFI_SUCCESS) + goto out; + + /* Initialize EFI runtime services */ + ret = efi_reset_system_init(); + if (ret != EFI_SUCCESS) + goto out; + + /* Execute capsules after reboot */ + if (IS_ENABLED(CONFIG_EFI_CAPSULE_ON_DISK) && + !IS_ENABLED(CONFIG_EFI_CAPSULE_ON_DISK_EARLY)) + ret = efi_launch_capsules(); + +out: + r = efi_clear_os_indications(); + if (ret == EFI_SUCCESS) + ret = r; + efi_obj_list_initialized = ret; + return ret; +} |