1 /* 2 * Copyright (c) 2013 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef __DM_UTIL_H 8 #define __DM_UTIL_H 9 10 #ifdef CONFIG_DM_WARN 11 void dm_warn(const char *fmt, ...); 12 #else 13 static inline void dm_warn(const char *fmt, ...) 14 { 15 } 16 #endif 17 18 struct list_head; 19 20 /** 21 * list_count_items() - Count number of items in a list 22 * 23 * @param head: Head of list 24 * @return number of items, or 0 if empty 25 */ 26 int list_count_items(struct list_head *head); 27 28 /* Dump out a tree of all devices */ 29 void dm_dump_all(void); 30 31 /* Dump out a list of uclasses and their devices */ 32 void dm_dump_uclass(void); 33 34 #ifdef CONFIG_DEBUG_DEVRES 35 /* Dump out a list of device resources */ 36 void dm_dump_devres(void); 37 #else 38 static inline void dm_dump_devres(void) 39 { 40 } 41 #endif 42 43 /** 44 * Check if a dt node should be or was bound before relocation. 45 * 46 * Devicetree nodes can be marked as needed to be bound 47 * in the loader stages via special devicetree properties. 48 * 49 * Before relocation this function can be used to check if nodes 50 * are required in either SPL or TPL stages. 51 * 52 * After relocation and jumping into the real U-Boot binary 53 * it is possible to determine if a node was bound in one of 54 * SPL/TPL stages. 55 * 56 * There are 3 settings currently in use 57 * - 58 * - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL 59 * Existing platforms only use it to indicate nodes needee in 60 * SPL. Should probably be replaced by u-boot,dm-spl for 61 * existing platforms. 62 * @blob: devicetree 63 * @offset: node offset 64 * 65 * Returns true if node is needed in SPL/TL, false otherwise. 66 */ 67 bool dm_fdt_pre_reloc(const void *blob, int offset); 68 69 #endif 70