aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/kirkwood/patches-5.10/202-linksys-find-active-root.patch
blob: b7e7f50271fefc7a905fb23b87395a815b98159f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
The WRT1900AC among other Linksys routers uses a dual-firmware layout.
Dynamically rename the active partition to "ubi".

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
---
--- a/drivers/mtd/parsers/ofpart.c
+++ b/drivers/mtd/parsers/ofpart.c
@@ -21,6 +21,8 @@ static bool node_has_compatible(struct d
 	return of_get_property(pp, "compatible", NULL);
 }
 
+static int mangled_rootblock;
+
 static int parse_fixed_partitions(struct mtd_info *master,
 				  const struct mtd_partition **pparts,
 				  struct mtd_part_parser_data *data)
@@ -28,6 +30,7 @@ static int parse_fixed_partitions(struct
 	struct mtd_partition *parts;
 	struct device_node *mtd_node;
 	struct device_node *ofpart_node;
+	const char *owrtpart = "ubi";
 	const char *partname;
 	struct device_node *pp;
 	int nr_parts, i, ret = 0;
@@ -106,9 +109,15 @@ static int parse_fixed_partitions(struct
 		parts[i].size = of_read_number(reg + a_cells, s_cells);
 		parts[i].of_node = pp;
 
-		partname = of_get_property(pp, "label", &len);
-		if (!partname)
-			partname = of_get_property(pp, "name", &len);
+		if (mangled_rootblock && (i == mangled_rootblock)) {
+			partname = owrtpart;
+		} else {
+			partname = of_get_property(pp, "label", &len);
+
+			if (!partname)
+				partname = of_get_property(pp, "name", &len);
+		}
+
 		parts[i].name = partname;
 
 		if (of_get_property(pp, "read-only", &len))
@@ -215,6 +224,18 @@ static int __init ofpart_parser_init(voi
 	return 0;
 }
 
+static int __init active_root(char *str)
+{
+	get_option(&str, &mangled_rootblock);
+
+	if (!mangled_rootblock)
+		return 1;
+
+	return 1;
+}
+
+__setup("mangled_rootblock=", active_root);
+
 static void __exit ofpart_parser_exit(void)
 {
 	deregister_mtd_parser(&ofpart_parser);