lk2nd: device: Add an api to get dtb filename hints

msm8916-mainline · Nov 4, 2023 · bc751c9 · bc751c9
1 parent 1b60ab8
commit bc751c9
Show file tree

Hide file tree

Showing 3 changed files with 21 additions and 0 deletions.
diff --git a/lk2nd/device/device.c b/lk2nd/device/device.c
@@ -7,13 +7,22 @@
 #include <string.h>
 
 #include <libfdt.h>
+#include <lk2nd/util/lkfdt.h>
 #include <lk2nd/device.h>
 #include <lk2nd/init.h>
 
 #include "device.h"
 
 struct lk2nd_device lk2nd_dev;
 
+/**
+ * lk2nd_device_get_dtb_hints() - Get a null-terminated array of DTB names.
+ */
+char **lk2nd_device_get_dtb_hints(void)
+{
+	return lk2nd_dev.dtbfiles;
+}
+
 static int find_device_node(const void *dtb)
 {
 	int lk2nd_node, node, ret;
@@ -108,6 +117,10 @@ static void parse_dtb(const void *dtb)
 	else
 		dprintf(CRITICAL, "Failed to read 'model': %d\n", len);
 
+	lk2nd_dev.dtbfiles = lkfdt_stringlist_get_all(dtb, node, "lk2nd,dtb-files", &len);
+	if (len < 0)
+		dprintf(CRITICAL, "Failed to read 'lk2nd,dtb-files': %d\n", len);
+
 	dprintf(INFO, "Detected device: %s (compatible: %s)\n",
 		lk2nd_dev.model, lk2nd_dev.compatible);
 

diff --git a/lk2nd/device/device.h b/lk2nd/device/device.h
@@ -20,6 +20,8 @@ struct lk2nd_device {
 	const char *model;
 	const char *battery;
 
+	char **dtbfiles;
+
 	struct lk2nd_panel panel;
 
 #if WITH_LK2ND_DEVICE_2ND

diff --git a/lk2nd/include/lk2nd/device.h b/lk2nd/include/lk2nd/device.h
@@ -10,4 +10,10 @@ bool lk2nd_device2nd_have_atags(void) __PURE;
 void lk2nd_device2nd_copy_atags(void *tags, const char *cmdline,
 				void *ramdisk, unsigned ramdisk_size);
 
+#if WITH_LK2ND_DEVICE
+char **lk2nd_device_get_dtb_hints(void);
+#else
+static inline char **lk2nd_device_get_dtb_hints(void) { return NULL; };
+#endif
+
 #endif /* LK2ND_DEVICE_H */