1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef UFDT_TYPES_H 18 #define UFDT_TYPES_H 19 20 #include <libfdt.h> 21 22 /* it has type : struct ufdt_node** */ 23 #define for_each(it, node) \ 24 if ((node) != NULL) \ 25 for ((it) = (node)->nodes; (it) != (node)->nodes + (node)->mem_size; ++(it)) \ 26 if (*(it)) 27 28 #define for_each_child(it, node) \ 29 if (ufdt_node_tag(node) == FDT_BEGIN_NODE) \ 30 for ((it) = &(((struct ufdt_node_fdt_node *)(node))->child); *(it); \ 31 (it) = &((*(it))->sibling)) 32 33 #define for_each_prop(it, node) \ 34 for_each_child(it, node) if (ufdt_node_tag(*(it)) == FDT_PROP) 35 36 #define for_each_node(it, node) \ 37 for_each_child(it, node) if (ufdt_node_tag(*(it)) == FDT_BEGIN_NODE) 38 39 /* 40 * Gets prop name from FDT requires complicated manipulation. 41 * To avoid the manipulation, the *name pointer in ufdt_node_fdt_prop 42 * is pointed to the final destination of the prop name in FDT. 43 * For the FDT_BEGIN_NODE name, it can be obtained from FDT directly. 44 */ 45 #define ufdt_node_name(node) \ 46 ((ufdt_node_tag(node) == FDT_BEGIN_NODE) \ 47 ? (((const struct fdt_node_header *)((node)->fdt_tag_ptr))->name) \ 48 : (((const struct ufdt_node_fdt_prop *)(node))->name)) 49 50 #define ufdt_node_tag(node) \ 51 ((node) ? fdt32_to_cpu(*(node)->fdt_tag_ptr) : FDT_END) 52 53 struct ufdt_node { 54 fdt32_t *fdt_tag_ptr; 55 struct ufdt_node *sibling; 56 }; 57 58 struct ufdt_node_fdt_prop { 59 struct ufdt_node parent; 60 const char *name; 61 }; 62 63 struct ufdt_node_fdt_node { 64 struct ufdt_node parent; 65 struct ufdt_node *child; 66 struct ufdt_node **last_child_p; 67 }; 68 69 struct ufdt_phandle_table_entry { 70 uint32_t phandle; 71 struct ufdt_node *node; 72 }; 73 74 struct ufdt_static_phandle_table { 75 int len; 76 struct ufdt_phandle_table_entry *data; 77 }; 78 79 struct ufdt { 80 void **fdtps; 81 int mem_size_fdtps; 82 int num_used_fdtps; 83 84 struct ufdt_node *root; 85 struct ufdt_static_phandle_table phandle_table; 86 }; 87 88 struct ufdt_node_pool; 89 90 #endif /* UFDT_TYPES_H */ 91