diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.9/100-find_active_root.patch')
| -rw-r--r-- | target/linux/mvebu/patches-4.9/100-find_active_root.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.9/100-find_active_root.patch b/target/linux/mvebu/patches-4.9/100-find_active_root.patch new file mode 100644 index 0000000000..b8e8c92aab --- /dev/null +++ b/target/linux/mvebu/patches-4.9/100-find_active_root.patch @@ -0,0 +1,60 @@ +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/ofpart.c ++++ b/drivers/mtd/ofpart.c +@@ -25,6 +25,8 @@ static bool node_has_compatible(struct d + return of_get_property(pp, "compatible", NULL); + } + ++static int mangled_rootblock; ++ + static int parse_ofpart_partitions(struct mtd_info *master, + const struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +@@ -33,6 +35,7 @@ static int parse_ofpart_partitions(struc + struct device_node *mtd_node; + struct device_node *ofpart_node; + const char *partname; ++ const char *owrtpart = "ubi"; + struct device_node *pp; + int nr_parts, i, ret = 0; + bool dedicated = true; +@@ -109,9 +112,13 @@ static int parse_ofpart_partitions(struc + parts[i].offset = of_read_number(reg, a_cells); + parts[i].size = of_read_number(reg + a_cells, s_cells); + +- 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)) +@@ -212,6 +219,18 @@ 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); |