+
+grub_uint64_t
+grub_ieee1275_num_blocks (grub_ieee1275_ihandle_t ihandle)
+{
+ struct nblocks_args_ieee1275
+ {
+ struct grub_ieee1275_common_hdr common;
+ grub_ieee1275_cell_t method;
+ grub_ieee1275_cell_t ihandle;
+ grub_ieee1275_cell_t catch_result;
+ grub_ieee1275_cell_t blocks;
+ }
+ args;
+
+ INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 2);
+ args.method = (grub_ieee1275_cell_t) "#blocks";
+ args.ihandle = ihandle;
+ args.catch_result = 1;
+
+ if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.catch_result != 0))
+ return -1;
+
+ /*
+ * If the number of blocks exceeds the range of an unsigned number,
+ * return 0 to alert the caller to try the #blocks64 command.
+ */
+ if (args.blocks >= 0xffffffffULL)
+ return 0;
+
+ return args.blocks;
+}