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common/common_fit.c
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d41ce506b Initial Release, ... |
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/* * Copyright (C) 2016 Google, Inc * Written by Simon Glass <sjg@chromium.org> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <errno.h> #include <image.h> #include <linux/libfdt.h> #include <spl.h> ulong fdt_getprop_u32(const void *fdt, int node, const char *prop) { const u32 *cell; int len; cell = fdt_getprop(fdt, node, prop, &len); if (!cell || len != sizeof(*cell)) return FDT_ERROR; return fdt32_to_cpu(*cell); } /* * Iterate over all /configurations subnodes and call a platform specific * function to find the matching configuration. * Returns the node offset or a negative error number. */ int fit_find_config_node(const void *fdt) { const char *name; int conf, node, len; const char *dflt_conf_name; const char *dflt_conf_desc = NULL; int dflt_conf_node = -ENOENT; conf = fdt_path_offset(fdt, FIT_CONFS_PATH); if (conf < 0) { debug("%s: Cannot find /configurations node: %d ", __func__, conf); return -EINVAL; } dflt_conf_name = fdt_getprop(fdt, conf, "default", &len); for (node = fdt_first_subnode(fdt, conf); node >= 0; node = fdt_next_subnode(fdt, node)) { name = fdt_getprop(fdt, node, "description", &len); if (!name) { #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT printf("%s: Missing FDT description in DTB ", __func__); #endif return -EINVAL; } if (dflt_conf_name) { const char *node_name = fdt_get_name(fdt, node, NULL); if (strcmp(dflt_conf_name, node_name) == 0) { dflt_conf_node = node; dflt_conf_desc = name; } } if (board_fit_config_name_match(name)) continue; debug("Selecting config '%s'", name); return node; } if (dflt_conf_node != -ENOENT) { debug("Selecting default config '%s'", dflt_conf_desc); return dflt_conf_node; } return -ENOENT; } |