[PATCH v3 05/15] tests: treegen: Introduce emit_fdt_header_vers()

[Herve Codina <herve.codina@bootlin.com>]

treegen is used to generate custom dtbs. It uses emit_fdt_header()
to generate the header part.

The current definition of this function doesn't allow to set custom
settings related to version fields.

In order to easily generate some dtb with custom version values,
introduce emit_fdt_header_vers().

The modification doesn't introduce any functional changes.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 tests/treegen.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tests/treegen.c b/tests/treegen.c
index 6891bfd6..28943d43 100644
--- a/tests/treegen.c
+++ b/tests/treegen.c
@@ -105,7 +105,8 @@ static void fill_prop_name(struct buf *b, size_t strs, size_t prop, size_t strof
 
 /* FDT structure helpers */
 
-static size_t emit_fdt_header(struct buf *b)
+static size_t emit_fdt_header_vers(struct buf *b, uint32_t version,
+				   uint32_t last_comp_version)
 {
 	size_t off = emit_u32(b, FDT_MAGIC);
 
@@ -113,14 +114,19 @@ static size_t emit_fdt_header(struct buf *b)
 	emit_u32(b, 0);	/* off_dt_struct */
 	emit_u32(b, 0);	/* off_dt_strings */
 	emit_u32(b, 0);	/* off_mem_rsvmap */
-	emit_u32(b, 0x11);	/* version */
-	emit_u32(b, 0x10);	/* last_comp_version */
+	emit_u32(b, version);	/* version */
+	emit_u32(b, last_comp_version);	/* last_comp_version */
 	emit_u32(b, 0);	/* boot_cpuid_phys */
 	emit_u32(b, 0);	/* size_dt_strings */
 	emit_u32(b, 0);	/* size_dt_struct */
 	return off;
 }
 
+static size_t emit_fdt_header(struct buf *b)
+{
+	return emit_fdt_header_vers(b, 0x11, 0x10);
+}
+
 static void finish_rsvmap(struct buf *b, size_t hdr, size_t rsvmap)
 {
 	struct fdt_header *fh = (struct fdt_header *)(b->data + hdr);
-- 
2.55.0