Convert CONFIG_SYS_INTERLAKEN et al to Kconfig

[platform/kernel/u-boot.git] / include / efi_variable.h

diff --git a/include/efi_variable.h b/include/efi_variable.h
index 60491cb..03a3ecb 100644 (file)
--- a/include/efi_variable.h
+++ b/include/efi_variable.h
@@ -12,6 +12,7 @@
 
 enum efi_auth_var_type {
        EFI_AUTH_VAR_NONE = 0,
+       EFI_AUTH_MODE,
        EFI_AUTH_VAR_PK,
        EFI_AUTH_VAR_KEK,
        EFI_AUTH_VAR_DB,
@@ -31,7 +32,8 @@ enum efi_auth_var_type {
  * @timep:             authentication time (seconds since start of epoch)
  * Return:             status code
  */
-efi_status_t efi_get_variable_int(u16 *variable_name, const efi_guid_t *vendor,
+efi_status_t efi_get_variable_int(const u16 *variable_name,
+                                 const efi_guid_t *vendor,
                                  u32 *attributes, efi_uintn_t *data_size,
                                  void *data, u64 *timep);
 
@@ -46,7 +48,8 @@ efi_status_t efi_get_variable_int(u16 *variable_name, const efi_guid_t *vendor,
  * @ro_check:          check the read only read only bit in attributes
  * Return:             status code
  */
-efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor,
+efi_status_t efi_set_variable_int(const u16 *variable_name,
+                                 const efi_guid_t *vendor,
                                  u32 attributes, efi_uintn_t data_size,
                                  const void *data, bool ro_check);
 
@@ -91,7 +94,7 @@ efi_status_t efi_query_variable_info_int(u32 attributes,
 
 #define EFI_VAR_FILE_NAME "ubootefi.var"
 
-#define EFI_VAR_BUF_SIZE 0x4000
+#define EFI_VAR_BUF_SIZE CONFIG_EFI_VAR_BUF_SIZE
 
 /*
  * This constant identifies the file format for storing UEFI variables in
@@ -161,10 +164,13 @@ efi_status_t __maybe_unused efi_var_collect(struct efi_var_file **bufp, loff_t *
 /**
  * efi_var_restore() - restore EFI variables from buffer
  *
+ * Only if @safe is set secure boot related variables will be restored.
+ *
  * @buf:       buffer
+ * @safe:      restoring from tamper-resistant storage
  * Return:     status code
  */
-efi_status_t efi_var_restore(struct efi_var_file *buf);
+efi_status_t efi_var_restore(struct efi_var_file *buf, bool safe);
 
 /**
  * efi_var_from_file() - read variables from file
@@ -220,7 +226,7 @@ void efi_var_mem_del(struct efi_var_entry *var);
  * @time:              time of authentication (as seconds since start of epoch)
  * Result:             status code
  */
-efi_status_t efi_var_mem_ins(u16 *variable_name,
+efi_status_t efi_var_mem_ins(const u16 *variable_name,
                             const efi_guid_t *vendor, u32 attributes,
                             const efi_uintn_t size1, const void *data1,
                             const efi_uintn_t size2, const void *data2,
@@ -247,7 +253,16 @@ efi_status_t efi_init_secure_state(void);
  * @guid:      guid of UEFI variable
  * Return:     identifier for authentication related variables
  */
-enum efi_auth_var_type efi_auth_var_get_type(u16 *name, const efi_guid_t *guid);
+enum efi_auth_var_type efi_auth_var_get_type(const u16 *name,
+                                            const efi_guid_t *guid);
+
+/**
+ * efi_auth_var_get_guid() - get the predefined GUID for a variable name
+ *
+ * @name:      name of UEFI variable
+ * Return:     guid of UEFI variable
+ */
+const efi_guid_t *efi_auth_var_get_guid(const u16 *name);
 
 /**
  * efi_get_next_variable_name_mem() - Runtime common code across efi variable
@@ -274,11 +289,11 @@ efi_get_next_variable_name_mem(efi_uintn_t *variable_name_size, u16 *variable_na
  * @data:              buffer to which the variable value is copied
  * @timep:             authentication time (seconds since start of epoch)
  * Return:             status code
-
  */
 efi_status_t __efi_runtime
-efi_get_variable_mem(u16 *variable_name, const efi_guid_t *vendor, u32 *attributes,
-                    efi_uintn_t *data_size, void *data, u64 *timep);
+efi_get_variable_mem(const u16 *variable_name, const efi_guid_t *vendor,
+                    u32 *attributes, efi_uintn_t *data_size, void *data,
+                    u64 *timep);
 
 /**
  * efi_get_variable_runtime() - runtime implementation of GetVariable()
@@ -307,4 +322,15 @@ efi_status_t __efi_runtime EFIAPI
 efi_get_next_variable_name_runtime(efi_uintn_t *variable_name_size,
                                   u16 *variable_name, efi_guid_t *guid);
 
+/**
+ * efi_var_buf_update() - udpate memory buffer for variables
+ *
+ * @var_buf:   source buffer
+ *
+ * This function copies to the memory buffer for UEFI variables. Call this
+ * function in ExitBootServices() if memory backed variables are only used
+ * at runtime to fill the buffer.
+ */
+void efi_var_buf_update(struct efi_var_file *var_buf);
+
 #endif