-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- * SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-static int _fdt_sw_check_header(void *fdt)
-{
- if (fdt_magic(fdt) != FDT_SW_MAGIC)
- return -FDT_ERR_BADMAGIC;
- /* FIXME: should check more details about the header state */
- return 0;
-}
-
-#define FDT_SW_CHECK_HEADER(fdt) \
- { \
- int err; \
- if ((err = _fdt_sw_check_header(fdt)) != 0) \
- return err; \
- }
-
-static void *_fdt_grab_space(void *fdt, size_t len)
-{
- int offset = fdt_size_dt_struct(fdt);
- int spaceleft;
-
- spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
- - fdt_size_dt_strings(fdt);
-
- if ((offset + len < offset) || (offset + len > spaceleft))
- return NULL;
-
- fdt_set_size_dt_struct(fdt, offset + len);
- return _fdt_offset_ptr_w(fdt, offset);
-}
-
-int fdt_create(void *buf, int bufsize)
-{
- void *fdt = buf;
-
- if (bufsize < sizeof(struct fdt_header))
- return -FDT_ERR_NOSPACE;
-
- memset(buf, 0, bufsize);
-
- fdt_set_magic(fdt, FDT_SW_MAGIC);
- fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
- fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
- fdt_set_totalsize(fdt, bufsize);
-
- fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
- sizeof(struct fdt_reserve_entry)));
- fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
- fdt_set_off_dt_strings(fdt, bufsize);
-
- return 0;
-}
-
-int fdt_resize(void *fdt, void *buf, int bufsize)
-{
- size_t headsize, tailsize;
- char *oldtail, *newtail;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- headsize = fdt_off_dt_struct(fdt);
- tailsize = fdt_size_dt_strings(fdt);
-
- if ((headsize + tailsize) > bufsize)
- return -FDT_ERR_NOSPACE;
-
- oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
- newtail = (char *)buf + bufsize - tailsize;
-
- /* Two cases to avoid clobbering data if the old and new
- * buffers partially overlap */
- if (buf <= fdt) {
- memmove(buf, fdt, headsize);
- memmove(newtail, oldtail, tailsize);
- } else {
- memmove(newtail, oldtail, tailsize);
- memmove(buf, fdt, headsize);
- }
-
- fdt_set_off_dt_strings(buf, bufsize);
- fdt_set_totalsize(buf, bufsize);
-
- return 0;
-}
-
-int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
-{
- struct fdt_reserve_entry *re;
- int offset;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- if (fdt_size_dt_struct(fdt))
- return -FDT_ERR_BADSTATE;
-
- offset = fdt_off_dt_struct(fdt);
- if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
- return -FDT_ERR_NOSPACE;
-
- re = (struct fdt_reserve_entry *)((char *)fdt + offset);
- re->address = cpu_to_fdt64(addr);
- re->size = cpu_to_fdt64(size);
-
- fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
-
- return 0;
-}
-
-int fdt_finish_reservemap(void *fdt)
-{
- return fdt_add_reservemap_entry(fdt, 0, 0);
-}
-
-int fdt_begin_node(void *fdt, const char *name)
-{
- struct fdt_node_header *nh;
- int namelen = strlen(name) + 1;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
- if (! nh)
- return -FDT_ERR_NOSPACE;
-
- nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
- memcpy(nh->name, name, namelen);
- return 0;
-}
-
-int fdt_end_node(void *fdt)
-{
- fdt32_t *en;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- en = _fdt_grab_space(fdt, FDT_TAGSIZE);
- if (! en)
- return -FDT_ERR_NOSPACE;
-
- *en = cpu_to_fdt32(FDT_END_NODE);
- return 0;
-}
-
-static int _fdt_find_add_string(void *fdt, const char *s)
-{
- char *strtab = (char *)fdt + fdt_totalsize(fdt);
- const char *p;
- int strtabsize = fdt_size_dt_strings(fdt);
- int len = strlen(s) + 1;
- int struct_top, offset;
-
- p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
- if (p)
- return p - strtab;
-
- /* Add it */
- offset = -strtabsize - len;
- struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
- if (fdt_totalsize(fdt) + offset < struct_top)
- return 0; /* no more room :( */
-
- memcpy(strtab + offset, s, len);
- fdt_set_size_dt_strings(fdt, strtabsize + len);
- return offset;
-}
-
-int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp)
-{
- struct fdt_property *prop;
- int nameoff;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- nameoff = _fdt_find_add_string(fdt, name);
- if (nameoff == 0)
- return -FDT_ERR_NOSPACE;
-
- prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
- if (! prop)
- return -FDT_ERR_NOSPACE;
-
- prop->tag = cpu_to_fdt32(FDT_PROP);
- prop->nameoff = cpu_to_fdt32(nameoff);
- prop->len = cpu_to_fdt32(len);
- *valp = prop->data;
- return 0;
-}
-
-int fdt_property(void *fdt, const char *name, const void *val, int len)
-{
- void *ptr;
- int ret;
-
- ret = fdt_property_placeholder(fdt, name, len, &ptr);
- if (ret)
- return ret;
- memcpy(ptr, val, len);
- return 0;
-}
-
-int fdt_finish(void *fdt)
-{
- char *p = (char *)fdt;
- fdt32_t *end;
- int oldstroffset, newstroffset;
- uint32_t tag;
- int offset, nextoffset;
-
- FDT_SW_CHECK_HEADER(fdt);
-
- /* Add terminator */
- end = _fdt_grab_space(fdt, sizeof(*end));
- if (! end)
- return -FDT_ERR_NOSPACE;
- *end = cpu_to_fdt32(FDT_END);
-
- /* Relocate the string table */
- oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt);
- newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
- memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt));
- fdt_set_off_dt_strings(fdt, newstroffset);
-
- /* Walk the structure, correcting string offsets */
- offset = 0;
- while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
- if (tag == FDT_PROP) {
- struct fdt_property *prop =
- _fdt_offset_ptr_w(fdt, offset);
- int nameoff;
-
- nameoff = fdt32_to_cpu(prop->nameoff);
- nameoff += fdt_size_dt_strings(fdt);
- prop->nameoff = cpu_to_fdt32(nameoff);
- }
- offset = nextoffset;
- }
- if (nextoffset < 0)
- return nextoffset;
-
- /* Finally, adjust the header */
- fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt));
- fdt_set_magic(fdt, FDT_MAGIC);
- return 0;
-}
+#include <linux/libfdt_env.h>
+#include "../../scripts/dtc/libfdt/fdt_sw.c"
projects / oweals / u-boot.git / blobdiff