layout: Introduce layout_next()

Also, a `layout.c` internal version mutable_layout_next() that
allows to modify layout entries and a shorthand to look up an
entry by name, _layout_entry_by_name().

Use the new functions where applicable and the code is not
dropped later in this train, and also to compare the layouts
in flashrom_layout_read_from_ifd() in depth.

Change-Id: I284958471c61344d29d92c95d88475065a9ca9aa
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/33542
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/layout.h b/layout.h
index f5740978b..d60c89ee3 100644
--- a/layout.h
+++ b/layout.h
@@ -70,6 +70,7 @@ int get_region_range(struct flashrom_layout *const l, const char *name,
 int process_include_args(struct flashrom_layout *l, const struct layout_include_args *const args);
 const struct romentry *layout_next_included_region(const struct flashrom_layout *, chipoff_t);
 const struct romentry *layout_next_included(const struct flashrom_layout *, const struct romentry *);
+const struct romentry *layout_next(const struct flashrom_layout *, const struct romentry *);
 int included_regions_overlap(const struct flashrom_layout *const flashrom_layout);
 void prepare_layout_for_extraction(struct flashrom_flashctx *flash);