On Fri, Jun 14, 2019 at 06:30:38PM +0200, Heinrich Schuchardt wrote:
> From: AKASHI Takahiro <takahiro.aka...@linaro.org>
>
> 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.
>
> Currently we only support SetVirtualAddress() for all systems and
> ResetSystem() for some.
>
> Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
> Reviewed-by: Heinrich Schuchardt <xypron.g...@gmx.de>
Please make clear who changed what.
> ---
> v4
> CONFIG_IS_ENABLED() wants Kconfig variables without CONFIG_ prefix.
This macro is intended for CONFIG_SPL_XXX as well.
For UEFI, however, we won't support UEFI in SPL.
-Takahiro Akashi
> v3
> Ensure that efi_runtime_services_supported is initialized.
> v2
> Currently we only support SetVirtualAddress() for all systems and
> ResetSystem() for some.
> ---
> include/efi_api.h | 15 +++++++++++++++
> include/efi_loader.h | 3 +++
> lib/efi_loader/efi_runtime.c | 24 ++++++++++++++++++++++++
> lib/efi_loader/efi_setup.c | 5 +++++
> 4 files changed, 47 insertions(+)
>
> diff --git a/include/efi_api.h b/include/efi_api.h
> index 65584dd2d8..d7d95edd4d 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 f0e1313f93..b07155cecb 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 432551d0c8..0c57d0abd7 100644
> --- a/lib/efi_loader/efi_runtime.c
> +++ b/lib/efi_loader/efi_runtime.c
> @@ -89,6 +89,30 @@ struct elf_rela {
> * handle a good number of runtime callbacks
> */
>
> +efi_status_t efi_init_runtime_supported(void)
> +{
> + u16 efi_runtime_services_supported = 0;
> +
> + /*
> + * This value must be synced with efi_runtime_detach_list
> + * as well as efi_runtime_services.
> + */
> +#if CONFIG_IS_ENABLED(ARCH_BCM283X) || \
> + CONFIG_IS_ENABLED(FSL_LAYERSCAPE) || \
> + CONFIG_IS_ENABLED(SYSRESET_X86) || \
> + CONFIG_IS_ENABLED(PSCI_RESET)
> + efi_runtime_services_supported |= EFI_RT_SUPPORTED_RESET_SYSTEM;
> +#endif
> + efi_runtime_services_supported |=
> + EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP;
> + 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 8691d686d2..bfb57836fa 100644
> --- a/lib/efi_loader/efi_setup.c
> +++ b/lib/efi_loader/efi_setup.c
> @@ -117,6 +117,11 @@ 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)
> --
> 2.20.1
>
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