diff options
Diffstat (limited to 'scripts/dtc/libfdt/fdt_sw.c')
| -rw-r--r-- | scripts/dtc/libfdt/fdt_sw.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/scripts/dtc/libfdt/fdt_sw.c b/scripts/dtc/libfdt/fdt_sw.c index 55ebebf1e..6a804859f 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; |