The ECPT table will be included in the UEFI specification 2.9+. The ECPT table was introduced in UEFI following the code-first path. The acceptance ticket can be viewed at: https://bugzilla.tianocore.org/show_bug.cgi?id=3591
The Conformance Profiles table is a UEFI configuration table that contains GUID of the UEFI profiles that the UEFI implementation conforms with.
The ECPT table is created when CONFIG_EFI_ECPT=y. The config is set by default.
Signed-off-by: Jose Marinho jose.marinho@arm.com --- cmd/efidebug.c | 4 ++ include/efi_api.h | 10 +++++ include/efi_loader.h | 7 ++++ lib/efi_loader/Kconfig | 6 +++ lib/efi_loader/Makefile | 1 + lib/efi_loader/efi_conformance.c | 66 ++++++++++++++++++++++++++++++++ lib/efi_loader/efi_setup.c | 6 +++ 7 files changed, 100 insertions(+) create mode 100644 lib/efi_loader/efi_conformance.c
diff --git a/cmd/efidebug.c b/cmd/efidebug.c index a977ca9c72..a53a5029fa 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -619,6 +619,10 @@ static const struct { "TCG2 Final Events Table", EFI_TCG2_FINAL_EVENTS_TABLE_GUID, }, + { + "EFI Conformance Profiles Table", + EFI_CONFORMANCE_PROFILES_TABLE_GUID, + }, };
/** diff --git a/include/efi_api.h b/include/efi_api.h index 80109f012b..6fd4f04de3 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -226,6 +226,16 @@ enum efi_reset_type { EFI_GUID(0x6dcbd5ed, 0xe82d, 0x4c44, 0xbd, 0xa1, \ 0x71, 0x94, 0x19, 0x9a, 0xd9, 0x2a)
+#define EFI_CONFORMANCE_PROFILES_TABLE_GUID \ + EFI_GUID(0x36122546, 0xf7ef, 0x4c8f, 0xbd, 0x9b, \ + 0xeb, 0x85, 0x25, 0xb5, 0x0c, 0x0b) + +struct efi_conformance_profiles_table { + u16 version; + u16 number_of_profiles; + efi_guid_t conformance_profiles[]; +} __packed; + struct efi_capsule_header { efi_guid_t capsule_guid; u32 header_size; diff --git a/include/efi_loader.h b/include/efi_loader.h index d52e399841..d20ff396d0 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -976,6 +976,13 @@ efi_status_t efi_capsule_authenticate(const void *capsule, */ efi_status_t efi_esrt_register(void);
+/** + * efi_ecpt_register() - Install the ECPT system table. + * + * Return: status code + */ +efi_status_t efi_ecpt_register(void); + /** * efi_esrt_populate() - Populates the ESRT entries from the FMP instances * present in the system. diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index 700dc838dd..b2398976f4 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -367,4 +367,10 @@ config EFI_ESRT help Enabling this option creates the ESRT UEFI system table.
+config EFI_ECPT + bool "Enable the UEFI ECPT generation" + default y + help + Enabling this option created the ECPT UEFI table. + endif diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile index fd344cea29..9f5a0cebd1 100644 --- a/lib/efi_loader/Makefile +++ b/lib/efi_loader/Makefile @@ -64,6 +64,7 @@ obj-$(CONFIG_EFI_RNG_PROTOCOL) += efi_rng.o obj-$(CONFIG_EFI_TCG2_PROTOCOL) += efi_tcg2.o obj-$(CONFIG_EFI_LOAD_FILE2_INITRD) += efi_load_initrd.o obj-$(CONFIG_EFI_SIGNATURE_SUPPORT) += efi_signature.o +obj-$(CONFIG_EFI_ECPT) += efi_conformance.o
EFI_VAR_SEED_FILE := $(subst $",,$(CONFIG_EFI_VAR_SEED_FILE)) $(obj)/efi_var_seed.o: $(srctree)/$(EFI_VAR_SEED_FILE) diff --git a/lib/efi_loader/efi_conformance.c b/lib/efi_loader/efi_conformance.c new file mode 100644 index 0000000000..1bb06c3b7e --- /dev/null +++ b/lib/efi_loader/efi_conformance.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * EFI conformance profile table + * + * Copyright (C) 2022 Arm Ltd. + */ + +#include <common.h> +#include <efi_loader.h> +#include <log.h> +#include <efi_api.h> +#include <malloc.h> + +const efi_guid_t efi_ecpt_guid = EFI_CONFORMANCE_PROFILES_TABLE_GUID; + +#define EFI_CONFORMANCE_PROFILES_TABLE_VERSION 1 + +/** + * efi_ecpt_register() - Install the ECPT system table. + * + * Return: status code + */ +efi_status_t efi_ecpt_register(void) +{ + int num_entries = 0; + struct efi_conformance_profiles_table *ecpt; + efi_status_t ret; + size_t ecpt_size = 0; + + efi_debug("ECPT table creation start\n"); + + ecpt_size = num_entries * sizeof(efi_guid_t) + + sizeof(struct efi_conformance_profiles_table); + ret = efi_allocate_pool(EFI_BOOT_SERVICES_DATA, ecpt_size, + (void **)&ecpt); + + if (ret != EFI_SUCCESS) { + efi_debug("ECPT cannot allocate memory for %u entries (%zu bytes)\n", + num_entries, ecpt_size); + + return ret; + } + + ecpt->version = EFI_CONFORMANCE_PROFILES_TABLE_VERSION; + ecpt->number_of_profiles = num_entries; + + if (num_entries) + efi_debug("ECPT check conformance profiles, not all entries populated in table\n"); + + /* Install the ECPT in the system configuration table. */ + ret = efi_install_configuration_table(&efi_ecpt_guid, (void *)ecpt); + if (ret != EFI_SUCCESS) { + efi_debug("ECPT failed to install the ECPT in the system table\n"); + goto error; + } + + efi_debug("ECPT table successfully created\n"); + + return ret; + +error: + + ret = efi_free_pool(ecpt); + + return ret; +} diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c index 1aba71cd96..fa5ad13500 100644 --- a/lib/efi_loader/efi_setup.c +++ b/lib/efi_loader/efi_setup.c @@ -231,6 +231,12 @@ efi_status_t efi_init_obj_list(void) 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)