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path: root/scripts/dtc/libfdt/fdt_sw.c
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Diffstat (limited to 'scripts/dtc/libfdt/fdt_sw.c')
-rw-r--r--scripts/dtc/libfdt/fdt_sw.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/scripts/dtc/libfdt/fdt_sw.c b/scripts/dtc/libfdt/fdt_sw.c
index 55ebebf1eb20..6a804859fd0c 100644
--- a/scripts/dtc/libfdt/fdt_sw.c
+++ b/scripts/dtc/libfdt/fdt_sw.c
@@ -107,6 +107,38 @@ int fdt_create(void *buf, int 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;
@@ -153,7 +185,7 @@ int fdt_begin_node(void *fdt, const char *name)
int fdt_end_node(void *fdt)
{
- uint32_t *en;
+ fdt32_t *en;
FDT_SW_CHECK_HEADER(fdt);
@@ -213,7 +245,7 @@ int fdt_property(void *fdt, const char *name, const void *val, int len)
int fdt_finish(void *fdt)
{
char *p = (char *)fdt;
- uint32_t *end;
+ fdt32_t *end;
int oldstroffset, newstroffset;
uint32_t tag;
int offset, nextoffset;