include/ft_build.h

   1 /*
   2  * OF Flat tree builder
   3  *
   4  */
   5
   6 #ifndef FT_BUILD_H
   7 #define FT_BUILD_H
   8
   9 #include <linux/types.h>
  10 #include <asm/u-boot.h>
  11
  12 /* Definitions used by the flattened device tree */
  13 #define OF_DT_HEADER            0xd00dfeed      /* marker */
  14 #define OF_DT_BEGIN_NODE        0x1     /* Start of node, full name */
  15 #define OF_DT_END_NODE          0x2     /* End node */
  16 #define OF_DT_PROP              0x3     /* Property: name off, size,
  17                                          * content */
  18 #define OF_DT_NOP               0x4     /* nop */
  19 #define OF_DT_END               0x9
  20
  21 #define OF_DT_VERSION           0x10
  22
  23 struct boot_param_header {
  24         u32 magic;              /* magic word OF_DT_HEADER */
  25         u32 totalsize;          /* total size of DT block */
  26         u32 off_dt_struct;      /* offset to structure */
  27         u32 off_dt_strings;     /* offset to strings */
  28         u32 off_mem_rsvmap;     /* offset to memory reserve map */
  29         u32 version;            /* format version */
  30         u32 last_comp_version;  /* last compatible version */
  31         /* version 2 fields below */
  32         u32 boot_cpuid_phys;    /* Physical CPU id we're booting on */
  33         /* version 3 fields below */
  34         u32 dt_strings_size;    /* size of the DT strings block */
  35 };
  36
  37 struct ft_cxt {
  38         struct boot_param_header *bph;
  39         int max_size;           /* maximum size of tree */
  40         int overflow;           /* set when this happens */
  41         u8 *p, *pstr, *pres;    /* running pointers */
  42         u8 *p_begin, *pstr_begin, *pres_begin;  /* starting pointers */
  43         u8 *p_anchor;           /* start of constructed area */
  44         int struct_size, strings_size, res_size;
  45 };
  46
  47 void ft_begin_node(struct ft_cxt *cxt, const char *name);
  48 void ft_end_node(struct ft_cxt *cxt);
  49
  50 void ft_begin_tree(struct ft_cxt *cxt);
  51 int ft_end_tree(struct ft_cxt *cxt);
  52
  53 void ft_nop(struct ft_cxt *cxt);
  54 void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz);
  55 void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);
  56 void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
  57 void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
  58 void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
  59
  60 void ft_setup(void *blob, int size, bd_t * bd, ulong initrd_start, ulong initrd_end);
  61
  62 void ft_dump_blob(const void *bphp);
  63 void ft_merge_blob(struct ft_cxt *cxt, void *blob);
  64 void *ft_get_prop(void *bphp, const char *propname, int *szp);
  65
  66 void ft_board_setup(void *blob, bd_t *bd);
  67
  68 #endif