EmbeddedPkg: Added support to libfdt

[mirror_edk2.git] / EmbeddedPkg / Include / fdt.h

diff --git a/EmbeddedPkg/Include/fdt.h b/EmbeddedPkg/Include/fdt.h
new file mode 100644 (file)
index 0000000..6e7a8b3
--- /dev/null
+++ b/EmbeddedPkg/Include/fdt.h
@@ -0,0 +1,74 @@
+/** @file
+*
+*  Copyright (c) 2011-2012, ARM Limited. All rights reserved.
+*  
+*  This program and the accompanying materials                          
+*  are licensed and made available under the terms and conditions of the BSD License         
+*  which accompanies this distribution.  The full text of the license may be found at        
+*  http://opensource.org/licenses/bsd-license.php                                            
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+*
+**/
+
+#ifndef _FDT_H
+#define _FDT_H
+
+#ifndef __ASSEMBLY__
+
+struct fdt_header {
+       uint32_t magic;                  /* magic word FDT_MAGIC */
+       uint32_t totalsize;              /* total size of DT block */
+       uint32_t off_dt_struct;          /* offset to structure */
+       uint32_t off_dt_strings;         /* offset to strings */
+       uint32_t off_mem_rsvmap;         /* offset to memory reserve map */
+       uint32_t version;                /* format version */
+       uint32_t last_comp_version;      /* last compatible version */
+
+       /* version 2 fields below */
+       uint32_t boot_cpuid_phys;        /* Which physical CPU id we're
+                                           booting on */
+       /* version 3 fields below */
+       uint32_t size_dt_strings;        /* size of the strings block */
+
+       /* version 17 fields below */
+       uint32_t size_dt_struct;         /* size of the structure block */
+};
+
+struct fdt_reserve_entry {
+       uint64_t address;
+       uint64_t size;
+};
+
+struct fdt_node_header {
+       uint32_t tag;
+       char name[0];
+};
+
+struct fdt_property {
+       uint32_t tag;
+       uint32_t len;
+       uint32_t nameoff;
+       char data[0];
+};
+
+#endif /* !__ASSEMBLY */
+
+#define FDT_MAGIC      0xd00dfeed      /* 4: version, 4: total size */
+#define FDT_TAGSIZE    sizeof(uint32_t)
+
+#define FDT_BEGIN_NODE 0x1             /* Start node: full name */
+#define FDT_END_NODE   0x2             /* End node */
+#define FDT_PROP       0x3             /* Property: name off,
+                                          size, content */
+#define FDT_NOP                0x4             /* nop */
+#define FDT_END                0x9
+
+#define FDT_V1_SIZE    (7*sizeof(uint32_t))
+#define FDT_V2_SIZE    (FDT_V1_SIZE + sizeof(uint32_t))
+#define FDT_V3_SIZE    (FDT_V2_SIZE + sizeof(uint32_t))
+#define FDT_V16_SIZE   FDT_V3_SIZE
+#define FDT_V17_SIZE   (FDT_V16_SIZE + sizeof(uint32_t))
+
+#endif /* _FDT_H */