[RFC] CHROMIUM: Two patches for comments: EFI GUID boot for dm-verity

include/linux/efi.h

 #ifndef _LINUX_EFI_H
 #define _LINUX_EFI_H
 
 /*
  * Extensible Firmware Interface
  * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
  *
  * Copyright (C) 1999 VA Linux Systems
  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
  * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
@@ skipping 306 matching lines @@
 extern u32 efi_mem_type (unsigned long phys_addr);
 extern u64 efi_mem_attributes (unsigned long phys_addr);
 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
 extern int __init efi_uart_console_only (void);
 extern void efi_initialize_iomem_resources(struct resource *code_resource,
                 struct resource *data_resource, struct resource *bss_resource);
 extern unsigned long efi_get_time(void);
 extern int efi_set_rtc_mmss(unsigned long nowtime);
 extern struct efi_memory_map memmap;
 
+#ifdef CONFIG_EFI_PARTITION
+struct block_device;
+extern int efi_find_partition(efi_guid_t *guid, struct block_device *bdev);
+#endif
+
 /**
  * efi_range_is_wc - check the WC bit on an address range
  * @start: starting kvirt address
  * @len: length of range
  *
  * Consult the EFI memory map and make sure it's ok to set this range WC.
  * Returns true or false.
  */
 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
 {
@@ skipping 77 matching lines @@
         u16 length;
 } __attribute ((packed));
 
 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
 {
         *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
         *addr &= PAGE_MASK;
 }
 
 #endif /* _LINUX_EFI_H */