Add a bit more detail about what this function does.
Signed-off-by: Simon Glass sjg@chromium.org ---
boot/fdt_support.c | 1 - include/fdt_support.h | 12 +++++++++++- 2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/boot/fdt_support.c b/boot/fdt_support.c index 09ce5828659e..510ad24a999d 100644 --- a/boot/fdt_support.c +++ b/boot/fdt_support.c @@ -722,7 +722,6 @@ int fdt_record_loadable(void *blob, u32 index, const char *name, return node; }
-/* Resize the fdt to its actual size + a bit of padding */ int fdt_shrink_to_minimum(void *blob, uint extrasize) { int i; diff --git a/include/fdt_support.h b/include/fdt_support.h index d967118bedf0..791258ec7eff 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -242,13 +242,23 @@ int ft_system_setup(void *blob, struct bd_info *bd); void set_working_fdt_addr(ulong addr);
/** - * shrink down the given blob to minimum size + some extrasize if required + * fdt_shrink_to_minimum() - shrink FDT while allowing for some margin + * + * Shrink down the given blob to 'minimum' size + some extrasize. + * + * The new size is enough to hold the existing contents plus @extrasize bytes, + * plus 5 memory reservations. Also, the end of the FDT is aligned to a 4KB + * boundary, so it might end up up to 4KB larger than needed. + * + * If there is an existing memory reservation for @blob in the FDT, it is + * updated for the new size. * * @param blob FDT blob to update * @param extrasize additional bytes needed * Return: 0 if ok, or -FDT_ERR_... on error */ int fdt_shrink_to_minimum(void *blob, uint extrasize); + int fdt_increase_size(void *fdt, int add_len);
int fdt_delete_disabled_nodes(void *blob);