efi_loader: pre-seed UEFI variables
Include a file with the initial values for non-volatile UEFI variables
into the U-Boot binary. If this variable is set, changes to variable PK
will not be allowed.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index 17a31ec..0577238 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -25,6 +25,8 @@
extern char __start_rodata[], __end_rodata[];
extern char __efi_helloworld_begin[];
extern char __efi_helloworld_end[];
+extern char __efi_var_file_begin[];
+extern char __efi_var_file_end[];
/* Start and end of .ctors section - used for constructor calls. */
extern char __ctors_start[], __ctors_end[];
diff --git a/include/efi_variable.h b/include/efi_variable.h
index 021a74f..17f25ad 100644
--- a/include/efi_variable.h
+++ b/include/efi_variable.h
@@ -139,6 +139,14 @@
efi_status_t efi_var_to_file(void);
/**
+ * efi_var_restore() - restore EFI variables from buffer
+ *
+ * @buf: buffer
+ * Return: status code
+ */
+efi_status_t efi_var_restore(struct efi_var_file *buf);
+
+/**
* efi_var_from_file() - read variables from file
*
* File ubootefi.var is read from the EFI system partitions and the variables