[PATCH 10/18] blspec: Set firmware searchpath

[Sascha Hauer <s.hauer@pengutronix.de>]

When bootloader spec triggers dt overlay loading then this might
also trigger loading firmware. This firmware should be looked for
relative to the filesystem providing the bootloader spec files,
so add that to the firmware search path.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 common/blspec.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/common/blspec.c b/common/blspec.c
index 056c0dbf7f..c39805cb0b 100644
--- a/common/blspec.c
+++ b/common/blspec.c
@@ -122,6 +122,8 @@ static int blspec_boot(struct bootentry *be, int verbose, int dryrun)
 	const char *abspath, *devicetree, *options, *initrd, *linuximage;
 	const char *overlays;
 	const char *appendroot;
+	const char *old_fws;
+	char *fws;
 	struct bootm_data data = {
 		.dryrun = dryrun,
 	};
@@ -184,9 +186,20 @@ static int blspec_boot(struct bootentry *be, int verbose, int dryrun)
 			(entry->cdev && entry->cdev->dev) ?
 			dev_name(entry->cdev->dev) : "none");
 
+	old_fws = firmware_get_searchpath();
+	if (old_fws && *old_fws)
+		fws = basprintf("%s/lib/firmware:%s", abspath, old_fws);
+	else
+		fws = basprintf("%s/lib/firmware", abspath);
+	firmware_set_searchpath(fws);
+	free(fws);
+
 	ret = bootm_boot(&data);
 	if (ret)
 		pr_err("Booting failed\n");
+
+	firmware_set_searchpath(old_fws);
+
 err_out:
 	free((char *)data.oftree_file);
 	free((char *)data.initrd_file);
-- 
2.29.2


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