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 (tag_of(node) == FDT_BEGIN_NODE) \ 30 for ((it) = &(((struct fdt_node_ufdt_node *)node)->child); *it; \ 31 it = &((*it)->sibling)) 32 33 #define for_each_prop(it, node) \ 34 for_each_child(it, node) if (tag_of(*it) == FDT_PROP) 35 36 #define for_each_node(it, node) \ 37 for_each_child(it, node) if (tag_of(*it) == FDT_BEGIN_NODE) 38 39 /* 40 * Gets prop name from FDT requires complicated manipulation. 41 * To avoid the manipulation, the *name pointer in fdt_prop_ufdt_node 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 name_of(node) \ 46 ((tag_of(node) == FDT_BEGIN_NODE) \ 47 ? (((const struct fdt_node_header *)((node)->fdt_tag_ptr))->name) \ 48 : (((const struct fdt_prop_ufdt_node *)node)->name)) 49 50 struct ufdt_node { 51 fdt32_t *fdt_tag_ptr; 52 struct ufdt_node *sibling; 53 }; 54 55 struct fdt_prop_ufdt_node { 56 struct ufdt_node parent; 57 const char *name; 58 }; 59 60 struct fdt_node_ufdt_node { 61 struct ufdt_node parent; 62 struct ufdt_node *child; 63 struct ufdt_node **last_child_p; 64 }; 65 66 struct phandle_table_entry { 67 uint32_t phandle; 68 struct ufdt_node *node; 69 }; 70 71 struct static_phandle_table { 72 int len; 73 struct phandle_table_entry *data; 74 }; 75 76 struct ufdt { 77 void **fdtps; 78 int mem_size_fdtps; 79 int num_used_fdtps; 80 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 */ 98
