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authorRafał Miłecki <rafal@milecki.pl>2022-11-08 12:22:51 +0100
committerRafał Miłecki <rafal@milecki.pl>2022-11-10 12:47:22 +0100
commite4770db163a9585c43bb70dc5d6d1e45ef848e4a (patch)
tree5ab3412839c5f3a10ab3df990233c8eb4db92c5f
parent8cdafa149eda4e343905ccf00cad34ff2b52c85b (diff)
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kernel: support "linux,rootfs" DT property for splitting rootfs
OpenWrt's support for splitting rootfs (to create an extra "rootfs_data" partition) is limited to partitions called "rootfs". Upstream kernel allows any name partition to be rootfs if it has "linux,rootfs" property set. Add split support to such partitions in OpenWrt code. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-rw-r--r--target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch11
-rw-r--r--target/linux/generic/pending-5.15/400-mtd-mtdsplit-support.patch11
2 files changed, 12 insertions, 10 deletions
diff --git a/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch b/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch
index b34c041df0..89cac88717 100644
--- a/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch
+++ b/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch
@@ -64,7 +64,7 @@ SVN-Revision: 38002
/*
* MTD methods which simply translate the effective address and pass through
-@@ -237,6 +239,146 @@ static int mtd_add_partition_attrs(struc
+@@ -237,6 +239,147 @@ static int mtd_add_partition_attrs(struc
return ret;
}
@@ -196,7 +196,8 @@ SVN-Revision: 38002
+ if (rootfs_found)
+ return;
+
-+ if (!strcmp(part->name, "rootfs")) {
++ if (of_find_property(mtd_get_of_node(part), "linux,rootfs", NULL) ||
++ !strcmp(part->name, "rootfs")) {
+ run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+
+ rootfs_found = 1;
@@ -211,7 +212,7 @@ SVN-Revision: 38002
int mtd_add_partition(struct mtd_info *parent, const char *name,
long long offset, long long length)
{
-@@ -275,6 +417,7 @@ int mtd_add_partition(struct mtd_info *p
+@@ -275,6 +418,7 @@ int mtd_add_partition(struct mtd_info *p
if (ret)
goto err_remove_part;
@@ -219,7 +220,7 @@ SVN-Revision: 38002
mtd_add_partition_attrs(child);
return 0;
-@@ -423,6 +566,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -423,6 +567,7 @@ int add_mtd_partitions(struct mtd_info *
goto err_del_partitions;
}
@@ -227,7 +228,7 @@ SVN-Revision: 38002
mtd_add_partition_attrs(child);
/* Look for subpartitions */
-@@ -439,31 +583,6 @@ err_del_partitions:
+@@ -439,31 +584,6 @@ err_del_partitions:
return ret;
}
diff --git a/target/linux/generic/pending-5.15/400-mtd-mtdsplit-support.patch b/target/linux/generic/pending-5.15/400-mtd-mtdsplit-support.patch
index d07afd70ee..bf82bb3950 100644
--- a/target/linux/generic/pending-5.15/400-mtd-mtdsplit-support.patch
+++ b/target/linux/generic/pending-5.15/400-mtd-mtdsplit-support.patch
@@ -66,7 +66,7 @@ Subject: [PATCH] mtd: mtdsplit support
/*
* MTD methods which simply translate the effective address and pass through
-@@ -236,6 +238,146 @@ static int mtd_add_partition_attrs(struc
+@@ -236,6 +238,147 @@ static int mtd_add_partition_attrs(struc
return ret;
}
@@ -198,7 +198,8 @@ Subject: [PATCH] mtd: mtdsplit support
+ if (rootfs_found)
+ return;
+
-+ if (!strcmp(part->name, "rootfs")) {
++ if (of_find_property(mtd_get_of_node(part), "linux,rootfs", NULL) ||
++ !strcmp(part->name, "rootfs")) {
+ run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+
+ rootfs_found = 1;
@@ -213,7 +214,7 @@ Subject: [PATCH] mtd: mtdsplit support
int mtd_add_partition(struct mtd_info *parent, const char *name,
long long offset, long long length)
{
-@@ -274,6 +416,7 @@ int mtd_add_partition(struct mtd_info *p
+@@ -274,6 +417,7 @@ int mtd_add_partition(struct mtd_info *p
if (ret)
goto err_remove_part;
@@ -221,7 +222,7 @@ Subject: [PATCH] mtd: mtdsplit support
mtd_add_partition_attrs(child);
return 0;
-@@ -422,6 +565,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -422,6 +566,7 @@ int add_mtd_partitions(struct mtd_info *
goto err_del_partitions;
}
@@ -229,7 +230,7 @@ Subject: [PATCH] mtd: mtdsplit support
mtd_add_partition_attrs(child);
/* Look for subpartitions */
-@@ -438,31 +582,6 @@ err_del_partitions:
+@@ -438,31 +583,6 @@ err_del_partitions:
return ret;
}