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// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) /* * libfdt - Flat Device Tree manipulation * Copyright (C) 2006 David Gibson, IBM Corporation. */ #include "libfdt_env.h" #include <fdt.h> #include <libfdt.h> #include "libfdt_internal.h" int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset, const char *name, int namelen, uint32_t idx, const void *val, int len) { void *propval; int proplen; propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen, &proplen); if (!propval) return proplen; if ((unsigned)proplen < (len + idx)) return -FDT_ERR_NOSPACE; memcpy((char *)propval + idx, val, len); return 0; } int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, const void *val, int len) { const void *propval; int proplen; propval = fdt_getprop(fdt, nodeoffset, name, &proplen); if (!propval) return proplen; if (proplen != len) return -FDT_ERR_NOSPACE; return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name, strlen(name), 0, val, len); } static void fdt_nop_region_(void *start, int len) { fdt32_t *p; for (p = start; (char *)p < ((char *)start + len); p++) *p = cpu_to_fdt32(FDT_NOP); } int fdt_nop_property(void *fdt, int nodeoffset, const char *name) { struct fdt_property *prop; int len; prop = fdt_get_property_w(fdt, nodeoffset, name, &len); if (!prop) return len; fdt_nop_region_(prop, len + sizeof(*prop)); return 0; } int fdt_node_end_offset_(void *fdt, int offset) { int depth = 0; while ((offset >= 0) && (depth >= 0)) offset = fdt_next_node(fdt, offset, &depth); return offset; } int fdt_nop_node(void *fdt, int nodeoffset) { int endoffset; endoffset = fdt_node_end_offset_(fdt, nodeoffset); if (endoffset < 0) return endoffset; fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0), endoffset - nodeoffset); return 0; }