Mayank Grover | f3b7818 | 2017-12-19 13:31:30 +0530 | [diff] [blame] | 1 | #ifndef UFDT_TYPES_H |
| 2 | #define UFDT_TYPES_H |
| 3 | |
| 4 | #include <libfdt.h> |
| 5 | |
| 6 | #define ASCII_PRINT_S (32) |
| 7 | #define ASCII_PRINT_E (128) |
| 8 | #define ASCII_PRINT_SZ (ASCII_PRINT_E - ASCII_PRINT_S) |
| 9 | |
| 10 | #define FDT_PROP_DELI ':' |
| 11 | #define FDT_NODE_DELI '/' |
| 12 | |
| 13 | #define DTNL_INIT_SZ 4 |
| 14 | |
| 15 | /* Empirical values for hash functions. */ |
| 16 | #define HASH_BASE 13131 |
| 17 | |
| 18 | /* it has type : struct ufdt_node** */ |
| 19 | #define for_each(it, node_dict) \ |
| 20 | if ((node_dict) != NULL) \ |
| 21 | for (it = (node_dict)->nodes; \ |
| 22 | it != (node_dict)->nodes + (node_dict)->mem_size; ++it) \ |
| 23 | if (*it) |
| 24 | |
| 25 | #define for_each_child(it, node) \ |
| 26 | if (tag_of(node) == FDT_BEGIN_NODE) \ |
| 27 | for ((it) = &(((struct fdt_node_ufdt_node *)node)->child); *it; \ |
| 28 | it = &((*it)->sibling)) |
| 29 | |
| 30 | #define for_each_prop(it, node) \ |
| 31 | for_each_child(it, node) if (tag_of(*it) == FDT_PROP) |
| 32 | |
| 33 | #define for_each_node(it, node) \ |
| 34 | for_each_child(it, node) if (tag_of(*it) == FDT_BEGIN_NODE) |
| 35 | |
| 36 | /* |
| 37 | * Gets prop name from FDT requires complicated manipulation. |
| 38 | * To avoid the manipulation, the *name pointer in fdt_prop_ufdt_node |
| 39 | * is pointed to the final destination of the prop name in FDT. |
| 40 | * For the FDT_BEGIN_NODE name, it can be obtained from FDT directly. |
| 41 | */ |
| 42 | #define name_of(node) \ |
| 43 | ((tag_of(node) == FDT_BEGIN_NODE) \ |
| 44 | ? (((const struct fdt_node_header *)((node)->fdt_tag_ptr))->name) \ |
| 45 | : (((const struct fdt_prop_ufdt_node *)node)->name)) |
| 46 | |
| 47 | struct ufdt_node { |
| 48 | fdt32_t *fdt_tag_ptr; |
| 49 | struct ufdt_node *sibling; |
| 50 | }; |
| 51 | |
| 52 | struct ufdt_node_dict { |
| 53 | int mem_size; |
| 54 | int num_used; |
| 55 | struct ufdt_node **nodes; |
| 56 | }; |
| 57 | |
| 58 | struct fdt_prop_ufdt_node { |
| 59 | struct ufdt_node parent; |
| 60 | const char *name; |
| 61 | }; |
| 62 | |
| 63 | struct fdt_node_ufdt_node { |
| 64 | struct ufdt_node parent; |
| 65 | struct ufdt_node *child; |
| 66 | struct ufdt_node **last_child_p; |
| 67 | }; |
| 68 | |
| 69 | struct phandle_table_entry { |
| 70 | uint32_t phandle; |
| 71 | struct ufdt_node *node; |
| 72 | }; |
| 73 | |
| 74 | struct static_phandle_table { |
| 75 | int len; |
| 76 | struct phandle_table_entry *data; |
| 77 | }; |
| 78 | |
| 79 | struct ufdt { |
| 80 | void *fdtp; |
| 81 | struct ufdt_node *root; |
| 82 | struct static_phandle_table phandle_table; |
| 83 | }; |
| 84 | |
| 85 | typedef void func_on_ufdt_node(struct ufdt_node *, void *); |
| 86 | |
| 87 | struct ufdt_node_closure { |
| 88 | func_on_ufdt_node *func; |
| 89 | void *env; |
| 90 | }; |
| 91 | |
| 92 | static uint32_t tag_of(const struct ufdt_node *node) { |
| 93 | if (!node) return FDT_END; |
| 94 | return fdt32_to_cpu(*node->fdt_tag_ptr); |
| 95 | } |
| 96 | |
| 97 | #endif /* UFDT_TYPES_H */ |