From 29018abb09a6ad638df38d6df5ab089ef1115e3c Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Thu, 20 Jun 2019 15:25:48 +0200 Subject: efi_loader: let the variable driver patch out the runtime Our variable services are only provided at boottime. Therefore when leaving boottime the variable function are replaced by dummy functions returning EFI_UNSUPPORTED. Move this patching of the runtime table to the variable services implementation. Executed it in ExitBootServices(). Signed-off-by: Heinrich Schuchardt --- lib/efi_loader/efi_variable.c | 44 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'lib/efi_loader/efi_variable.c') diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c index 6210425f5e2..bc8ed678c9f 100644 --- a/lib/efi_loader/efi_variable.c +++ b/lib/efi_loader/efi_variable.c @@ -548,6 +548,50 @@ efi_status_t __efi_runtime EFIAPI efi_query_variable_info( return EFI_UNSUPPORTED; } +/** + * efi_get_variable_runtime() - runtime implementation of GetVariable() + */ +static efi_status_t __efi_runtime EFIAPI +efi_get_variable_runtime(u16 *variable_name, const efi_guid_t *vendor, + u32 *attributes, efi_uintn_t *data_size, void *data) +{ + return EFI_UNSUPPORTED; +} + +/** + * efi_get_next_variable_name_runtime() - runtime implementation of + * GetNextVariable() + */ +static efi_status_t __efi_runtime EFIAPI +efi_get_next_variable_name_runtime(efi_uintn_t *variable_name_size, + u16 *variable_name, const efi_guid_t *vendor) +{ + return EFI_UNSUPPORTED; +} + +/** + * efi_set_variable_runtime() - runtime implementation of SetVariable() + */ +static efi_status_t __efi_runtime EFIAPI +efi_set_variable_runtime(u16 *variable_name, const efi_guid_t *vendor, + u32 attributes, efi_uintn_t data_size, + const void *data) +{ + return EFI_UNSUPPORTED; +} + +/** + * efi_variables_boot_exit_notify() - notify ExitBootServices() is called + */ +void efi_variables_boot_exit_notify(void) +{ + efi_runtime_services.get_variable = efi_get_variable_runtime; + efi_runtime_services.get_next_variable_name = + efi_get_next_variable_name_runtime; + efi_runtime_services.set_variable = efi_set_variable_runtime; + efi_update_table_header_crc32(&efi_runtime_services.hdr); +} + /** * efi_init_variables() - initialize variable services * -- cgit v1.2.3