This variable is defined in UEFI specification 2.8, section 8.1. Its value should be updated whenever we add any usable runtime services function.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- include/efi_api.h | 15 +++++++++++++++ include/efi_loader.h | 3 +++ lib/efi_loader/efi_runtime.c | 28 ++++++++++++++++++++++++++++ lib/efi_loader/efi_setup.c | 5 +++++ 4 files changed, 51 insertions(+)
diff --git a/include/efi_api.h b/include/efi_api.h index 65584dd2d82a..d7d95edd4dfc 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -213,6 +213,21 @@ struct efi_capsule_header { u32 capsule_image_size; };
+#define EFI_RT_SUPPORTED_GET_TIME 0x0001 +#define EFI_RT_SUPPORTED_SET_TIME 0x0002 +#define EFI_RT_SUPPORTED_GET_WAKEUP_TIME 0x0004 +#define EFI_RT_SUPPORTED_SET_WAKEUP_TIME 0x0008 +#define EFI_RT_SUPPORTED_GET_VARIABLE 0x0010 +#define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME 0x0020 +#define EFI_RT_SUPPORTED_SET_VARIABLE 0x0040 +#define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP 0x0080 +#define EFI_RT_SUPPORTED_CONVERT_POINTER 0x0100 +#define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT 0x0200 +#define EFI_RT_SUPPORTED_RESET_SYSTEM 0x0400 +#define EFI_RT_SUPPORTED_UPDATE_CAPSULE 0x0800 +#define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES 0x1000 +#define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO 0x2000 + struct efi_runtime_services { struct efi_table_hdr hdr; efi_status_t (EFIAPI *get_time)(struct efi_time *time, diff --git a/include/efi_loader.h b/include/efi_loader.h index 23ce73226762..7bd8002e303e 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -573,6 +573,9 @@ static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime"))) #define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
+/* Indicate supported runtime services */ +efi_status_t efi_init_runtime_supported(void); + /* Update CRC32 in table header */ void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table);
diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c index 60442cb21d37..cf202bb9ec07 100644 --- a/lib/efi_loader/efi_runtime.c +++ b/lib/efi_loader/efi_runtime.c @@ -89,6 +89,34 @@ struct elf_rela { * handle a good number of runtime callbacks */
+efi_status_t efi_init_runtime_supported(void) +{ + u16 efi_runtime_services_supported; + + /* + * This value must be synced with efi_runtime_detach_list + * as well as efi_runtime_services. + */ + efi_runtime_services_supported = EFI_RT_SUPPORTED_RESET_SYSTEM; +#ifdef CONFIG_EFI_GET_TIME + efi_runtime_services_supported |= EFI_RT_SUPPORTED_GET_TIME; +#endif +#ifdef CONFIG_EFI_SET_TIME + efi_runtime_services_supported |= EFI_RT_SUPPORTED_SET_TIME; +#endif +#ifdef CONFIG_EFI_RUNTIME_SET_VIRTUAL_ADDRESS_MAP + efi_runtime_services_supported |= + EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP; +#endif + + return EFI_CALL(efi_set_variable(L"RuntimeServicesSupported", + &efi_global_variable_guid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + sizeof(efi_runtime_services_supported), + &efi_runtime_services_supported)); +} + /** * efi_update_table_header_crc32() - Update crc32 in table header * diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c index 45d6aca051f3..75fa344060d5 100644 --- a/lib/efi_loader/efi_setup.c +++ b/lib/efi_loader/efi_setup.c @@ -123,6 +123,11 @@ efi_status_t efi_init_obj_list(void) if (ret != EFI_SUCCESS) goto out;
+ /* Indicate supported runtime services */ + ret = efi_init_runtime_supported(); + if (ret != EFI_SUCCESS) + goto out; + /* Initialize system table */ ret = efi_initialize_system_table(); if (ret != EFI_SUCCESS)