Allow multipart property values

At present each property definition in a dts file must give as the
value either a string ("abc..."), a bytestring ([12abcd...]) or a cell
list (<1 2 3 ...>).  This patch allows a property value to be given as
several of these, comma-separated.  The final property value is just
the components appended together.  So a property could have a list of
cells followed by a string, or a bytestring followed by some cells.
Cells are always aligned, so if cells are given following a string or
bytestring which is not a multiple of 4 bytes long, zero bytes are
inserted to align the following cells.

The primary motivation for this feature, however, is to allow defining
a property as a list of several strings.  This is what's needed for
defining OF 'compatible' properties, and is less ugly and fiddly than
using embedded \0s in the strings.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dtc.h b/dtc.h
index 42e9de0..8d3964c 100644
--- a/dtc.h
+++ b/dtc.h
@@ -119,6 +119,7 @@ struct data data_copy_escape_string(char *s, int len);
 struct data data_copy_file(FILE *f, size_t len);
 
 struct data data_append_data(struct data d, void *p, int len);
+struct data data_merge(struct data d1, struct data d2);
 struct data data_append_cell(struct data d, cell_t word);
 struct data data_append_re(struct data d, struct reserve_entry *re);
 struct data data_append_addr(struct data d, u64 addr);