From 5d4bbb5f5b15efc93c5b0a34fe7d66b074820167 Mon Sep 17 00:00:00 2001 From: Luka Perkov Date: Tue, 10 Nov 2015 00:16:33 +0000 Subject: [PATCH] kirkwood: find active Linksys root partition This is imported verbatim from the mvebu WRT1900AC port. It picks up the current boot partition from the kernel command line, then renames that partition "ubi" so that it auto-mounts. Signed-off-by: Claudio Leite SVN-Revision: 47431 --- target/linux/kirkwood/config-3.18 | 1 + target/linux/kirkwood/config-4.3 | 1 + .../patches-3.18/100-find_active_root.patch | 61 +++++++++++++++++++ .../patches-4.3/100-find_active_root.patch | 61 +++++++++++++++++++ 4 files changed, 124 insertions(+) create mode 100644 target/linux/kirkwood/patches-3.18/100-find_active_root.patch create mode 100644 target/linux/kirkwood/patches-4.3/100-find_active_root.patch diff --git a/target/linux/kirkwood/config-3.18 b/target/linux/kirkwood/config-3.18 index b936ba948b..17b2819830 100644 --- a/target/linux/kirkwood/config-3.18 +++ b/target/linux/kirkwood/config-3.18 @@ -189,6 +189,7 @@ CONFIG_LZO_DECOMPRESS=y CONFIG_MACH_KIRKWOOD=y CONFIG_MACH_MVEBU_ANY=y # CONFIG_MACH_NETXBIG is not set +CONFIG_MANGLE_BOOTARGS=y CONFIG_MDIO_BOARDINFO=y CONFIG_MIGHT_HAVE_PCI=y CONFIG_MMC=y diff --git a/target/linux/kirkwood/config-4.3 b/target/linux/kirkwood/config-4.3 index 86eace5d39..1e68af5acf 100644 --- a/target/linux/kirkwood/config-4.3 +++ b/target/linux/kirkwood/config-4.3 @@ -197,6 +197,7 @@ CONFIG_MAC80211_STA_HASH_MAX_SIZE=0 CONFIG_MACH_KIRKWOOD=y CONFIG_MACH_MVEBU_ANY=y # CONFIG_MACH_NETXBIG is not set +CONFIG_MANGLE_BOOTARGS=y CONFIG_MDIO_BOARDINFO=y CONFIG_MIGHT_HAVE_PCI=y CONFIG_MMC=y diff --git a/target/linux/kirkwood/patches-3.18/100-find_active_root.patch b/target/linux/kirkwood/patches-3.18/100-find_active_root.patch new file mode 100644 index 0000000000..e32b6089d1 --- /dev/null +++ b/target/linux/kirkwood/patches-3.18/100-find_active_root.patch @@ -0,0 +1,61 @@ +The WRT1900AC among other Linksys routers uses a dual-firmware layout. +Dynamically rename the active partition to "ubi". + +Signed-off-by: Imre Kaloz + +--- a/drivers/mtd/ofpart.c ++++ b/drivers/mtd/ofpart.c +@@ -25,12 +25,15 @@ 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, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) + { + struct device_node *node; + const char *partname; ++ const char *owrtpart = "ubi"; + struct device_node *pp; + int nr_parts, i; + +@@ -78,9 +81,15 @@ static int parse_ofpart_partitions(struc + (*pparts)[i].offset = of_read_number(reg, a_cells); + (*pparts)[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); ++ } ++ + (*pparts)[i].name = partname; + + if (of_get_property(pp, "read-only", &len)) +@@ -178,6 +187,18 @@ 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); diff --git a/target/linux/kirkwood/patches-4.3/100-find_active_root.patch b/target/linux/kirkwood/patches-4.3/100-find_active_root.patch new file mode 100644 index 0000000000..e32b6089d1 --- /dev/null +++ b/target/linux/kirkwood/patches-4.3/100-find_active_root.patch @@ -0,0 +1,61 @@ +The WRT1900AC among other Linksys routers uses a dual-firmware layout. +Dynamically rename the active partition to "ubi". + +Signed-off-by: Imre Kaloz + +--- a/drivers/mtd/ofpart.c ++++ b/drivers/mtd/ofpart.c +@@ -25,12 +25,15 @@ 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, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) + { + struct device_node *node; + const char *partname; ++ const char *owrtpart = "ubi"; + struct device_node *pp; + int nr_parts, i; + +@@ -78,9 +81,15 @@ static int parse_ofpart_partitions(struc + (*pparts)[i].offset = of_read_number(reg, a_cells); + (*pparts)[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); ++ } ++ + (*pparts)[i].name = partname; + + if (of_get_property(pp, "read-only", &len)) +@@ -178,6 +187,18 @@ 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); -- 2.25.1