1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2016 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
10 #include <linux/libfdt.h>
13 ulong fdt_getprop_u32(const void *fdt, int node, const char *prop)
18 cell = fdt_getprop(fdt, node, prop, &len);
19 if (!cell || len != sizeof(*cell))
22 return fdt32_to_cpu(*cell);
26 * Iterate over all /configurations subnodes and call a platform specific
27 * function to find the matching configuration.
28 * Returns the node offset or a negative error number.
30 int fit_find_config_node(const void *fdt)
34 const char *dflt_conf_name;
35 const char *dflt_conf_desc = NULL;
36 int dflt_conf_node = -ENOENT;
38 conf = fdt_path_offset(fdt, FIT_CONFS_PATH);
40 debug("%s: Cannot find /configurations node: %d\n", __func__,
45 dflt_conf_name = fdt_getprop(fdt, conf, "default", &len);
47 for (node = fdt_first_subnode(fdt, conf);
49 node = fdt_next_subnode(fdt, node)) {
50 name = fdt_getprop(fdt, node, "description", &len);
52 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
53 printf("%s: Missing FDT description in DTB\n",
60 const char *node_name = fdt_get_name(fdt, node, NULL);
61 if (strcmp(dflt_conf_name, node_name) == 0) {
62 dflt_conf_node = node;
63 dflt_conf_desc = name;
67 if (board_fit_config_name_match(name))
70 debug("Selecting config '%s'", name);
75 if (dflt_conf_node != -ENOENT) {
76 debug("Selecting default config '%s'", dflt_conf_desc);
77 return dflt_conf_node;