u-boot/lib/efi_loader/efi_setup.c
AKASHI Takahiro 023d9c9393 efi_loader: remove CONFIG_EFI_SETUP_EARLY
Since the commit a9bf024b29 ("efi_loader: disk: a helper function to
create efi_disk objects from udevice"), CONFIG_EFI_SETUP_EARLY option is
by default on and will never be turned off.

So just remove this option.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-11-06 10:50:04 +01:00

348 lines
7.6 KiB
C

// 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(u"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(u"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(u"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(u"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(u"CapsuleMax",
&efi_guid_capsule_report,
EFI_VARIABLE_READ_ONLY |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
22, u"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(u"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_init_early() - handle initialization at early stage
*
* expected to be called in board_init_r().
*
* Return: status code
*/
int efi_init_early(void)
{
efi_status_t ret;
/* 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;
/* Initialize EFI driver uclass */
ret = efi_driver_init();
if (ret != EFI_SUCCESS)
goto out;
return 0;
out:
/* never re-init UEFI subsystem */
efi_obj_list_initialized = ret;
return -1;
}
/**
* efi_init_obj_list() - Initialize and populate EFI object list
*
* Return: status code
*/
efi_status_t efi_init_obj_list(void)
{
efi_status_t ret = EFI_SUCCESS;
/* Initialize once only */
if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
return efi_obj_list_initialized;
/* Set up console modes */
efi_setup_console_size();
/*
* Probe block devices to find the ESP.
* efi_disks_register() must be called before efi_init_variables().
*/
ret = efi_disks_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_ECPT)) {
ret = efi_ecpt_register();
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;
ret = efi_tcg2_do_initial_measurement();
if (ret == EFI_SECURITY_VIOLATION)
goto out;
}
/* Install EFI_RNG_PROTOCOL */
if (IS_ENABLED(CONFIG_EFI_RNG_PROTOCOL)) {
ret = efi_rng_register();
if (ret != EFI_SUCCESS)
goto out;
}
if (IS_ENABLED(CONFIG_EFI_RISCV_BOOT_PROTOCOL)) {
ret = efi_riscv_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;
if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT)) {
ret = efi_load_capsule_drivers();
if (ret != EFI_SUCCESS)
goto out;
}
if (IS_ENABLED(CONFIG_VIDEO)) {
ret = efi_gop_register();
if (ret != EFI_SUCCESS)
goto out;
}
#ifdef CONFIG_NETDEVICES
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:
efi_obj_list_initialized = ret;
return ret;
}