--- zzzz-none-000/linux-4.9.279/include/linux/efi.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/include/linux/efi.h	2023-02-08 11:43:43.000000000 +0000
@@ -592,6 +592,7 @@
 #define EFI_RNG_PROTOCOL_GUID			EFI_GUID(0x3152bca5, 0xeade, 0x433d,  0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID	EFI_GUID(0xdcfa911d, 0x26eb, 0x469f,  0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
 #define EFI_CONSOLE_OUT_DEVICE_GUID		EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4,  0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define EFI_AVM_VARIABLE_GUID			EFI_GUID(0x692cccd4, 0xd3b9, 0x5e94, 0xba, 0x7e, 0x50, 0xaa, 0xac, 0xd8, 0xa3, 0x8d)
 
 /*
  * This GUID is used to pass to the kernel proper the struct screen_info
@@ -1191,7 +1192,7 @@
 	efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
 	efi_guid_t    VendorGuid;
 	unsigned long DataSize;
-	__u8          Data[1024];
+	__u8          Data[2048];
 	efi_status_t  Status;
 	__u32         Attributes;
 } __attribute__((packed));
@@ -1354,7 +1355,7 @@
 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
 int efivars_sysfs_init(void);
 
-#define EFIVARS_DATA_SIZE_MAX 1024
+#define EFIVARS_DATA_SIZE_MAX 2048
 
 #endif /* CONFIG_EFI_VARS */
 extern bool efi_capsule_pending(int *reset_type);
@@ -1431,6 +1432,16 @@
 				  unsigned long *load_addr,
 				  unsigned long *load_size);
 
+efi_status_t efi_get_variable_early(efi_system_table_t *sys_table_arg,
+				    efi_guid_t *guid, const char *varname,
+				    size_t *size, u8 *data);
+
+bool efi_file_exists(void *fh, efi_char16_t *filename_16);
+
+efi_status_t avm_get_dtb_setup_data(efi_system_table_t *sys_table_arg,
+				    efi_loaded_image_t *image,
+				    struct setup_data **dtb_setup_data);
+
 efi_status_t efi_parse_options(char const *cmdline);
 
 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,