1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (c) 2014 4 * Heiko Schocher, DENX Software Engineering, hs@denx.de. 5 * 6 * Based on lib/fdtdec.c: 7 * Copyright (c) 2011 The Chromium OS Authors. 8 */ 9 10#ifndef USE_HOSTCC 11#include <log.h> 12#include <linux/libfdt.h> 13#include <fdtdec.h> 14#else 15#include "libfdt.h" 16#include "fdt_support.h" 17 18#define debug(...) 19#endif 20 21int fdtdec_get_int(const void *blob, int node, const char *prop_name, 22 int default_val) 23{ 24 const int *cell; 25 int len; 26 27 debug("%s: %s: ", __func__, prop_name); 28 cell = fdt_getprop(blob, node, prop_name, &len); 29 if (cell && len >= sizeof(int)) { 30 int val = fdt32_to_cpu(cell[0]); 31 32 debug("%#x (%d)\n", val, val); 33 return val; 34 } 35 debug("(not found)\n"); 36 return default_val; 37} 38 39unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name, 40 unsigned int default_val) 41{ 42 const int *cell; 43 int len; 44 45 debug("%s: %s: ", __func__, prop_name); 46 cell = fdt_getprop(blob, node, prop_name, &len); 47 if (cell && len >= sizeof(unsigned int)) { 48 unsigned int val = fdt32_to_cpu(cell[0]); 49 50 debug("%#x (%d)\n", val, val); 51 return val; 52 } 53 debug("(not found)\n"); 54 return default_val; 55} 56 57int fdtdec_get_child_count(const void *blob, int node) 58{ 59 int subnode; 60 int num = 0; 61 62 fdt_for_each_subnode(subnode, blob, node) 63 num++; 64 65 return num; 66} 67