u-boot/lib/efi_loader/efi_setup.c
Heinrich Schuchardt 68edbed454 efi_loader: initialize console size late
If CONFIG_VIDEO_DM=n we query the display size from the serial console.
Especially when using a remote console the response can be so late that
it interferes with autoboot.

Only query the console size when running an EFI binary.

Add debug output showing the determined console size.

Reported-by: Fabio Estevam <festevam@gmail.com>
Fixes: a57ad20d07 ("efi_loader: split efi_init_obj_list() into two stages")
Fixes: a9bf024b29 ("efi_loader: disk: a helper function to create efi_disk objects from udevice")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Tested-by: Fabio Estevam <festevam@denx.de>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
2022-06-19 15:53:09 +02:00

359 lines
7.9 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
*
* This function is called in efi_init_obj_list() only if
* !CONFIG_EFI_SETUP_EARLY.
*
* Return: status code
*/
static efi_status_t __efi_init_early(void)
{
efi_status_t ret = EFI_SUCCESS;
/* 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;
ret = efi_disk_init();
out:
return ret;
}
/**
* efi_init_early() - handle initialization at early stage
*
* external version of __efi_init_early(); expected to be called in
* board_init_r().
*
* Return: status code
*/
int efi_init_early(void)
{
efi_status_t ret;
ret = __efi_init_early();
if (ret != EFI_SUCCESS) {
/* never re-init UEFI subsystem */
efi_obj_list_initialized = ret;
return -1;
}
return 0;
}
/**
* 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;
if (!IS_ENABLED(CONFIG_EFI_SETUP_EARLY)) {
ret = __efi_init_early();
if (ret != EFI_SUCCESS)
goto out;
}
/* Set up console modes */
efi_setup_console_size();
/* Install EFI_RNG_PROTOCOL */
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;
ret = efi_tcg2_do_initial_measurement();
if (ret == EFI_SECURITY_VIOLATION)
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;
/* 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:
efi_obj_list_initialized = ret;
return ret;
}