#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
-@@ -759,6 +760,19 @@ int add_mtd_device(struct mtd_info *mtd)
+@@ -759,6 +760,16 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
+ unsigned int index = mtd->index;
+ pr_notice("mtd: device %d (%s) set to be root filesystem\n",
+ mtd->index, mtd->name);
-+#ifdef CONFIG_FIT_PARTITION
-+ index <<= 2;
-+#endif
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, index);
+ }
+
+++ /dev/null
-From 6fa9e3678eb002246df1280322b6a024853950a5 Mon Sep 17 00:00:00 2001
-From: Ansuel Smith <ansuelsmth@gmail.com>
-Date: Mon, 11 Oct 2021 00:53:14 +0200
-Subject: [PATCH] drivers: mtd: parsers: add nvmem support to cmdlinepart
-
-Assuming cmdlinepart is only one level deep partition scheme and that
-static partition are also defined in DTS, we can assign an of_node for
-partition declared from bootargs. cmdlinepart have priority than
-fiexed-partition parser so in this specific case the parser doesn't
-assign an of_node. Fix this by searching a defined of_node using a
-similar fixed_partition parser and if a partition is found with the same
-label, check that it has the same offset and size and return the DT
-of_node to correctly use NVMEM cells.
-
-Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
----
- drivers/mtd/parsers/cmdlinepart.c | 71 +++++++++++++++++++++++++++++++
- 1 file changed, 71 insertions(+)
-
---- a/drivers/mtd/parsers/cmdlinepart.c
-+++ b/drivers/mtd/parsers/cmdlinepart.c
-@@ -43,6 +43,7 @@
- #include <linux/mtd/partitions.h>
- #include <linux/module.h>
- #include <linux/err.h>
-+#include <linux/of.h>
-
- /* debug macro */
- #if 0
-@@ -323,6 +324,68 @@ static int mtdpart_setup_real(char *s)
- return 0;
- }
-
-+static int search_fixed_partition(struct mtd_info *master,
-+ struct mtd_partition *target_part,
-+ struct mtd_partition *fixed_part)
-+{
-+ struct device_node *mtd_node;
-+ struct device_node *ofpart_node;
-+ struct device_node *pp;
-+ struct mtd_partition part;
-+ const char *partname;
-+
-+ mtd_node = mtd_get_of_node(master);
-+ if (!mtd_node)
-+ return -EINVAL;
-+
-+ ofpart_node = of_get_child_by_name(mtd_node, "partitions");
-+
-+ for_each_child_of_node(ofpart_node, pp) {
-+ const __be32 *reg;
-+ int len;
-+ int a_cells, s_cells;
-+
-+ reg = of_get_property(pp, "reg", &len);
-+ if (!reg) {
-+ pr_debug("%s: ofpart partition %pOF (%pOF) missing reg property.\n",
-+ master->name, pp,
-+ mtd_node);
-+ continue;
-+ }
-+
-+ a_cells = of_n_addr_cells(pp);
-+ s_cells = of_n_size_cells(pp);
-+ if (len / 4 != a_cells + s_cells) {
-+ pr_debug("%s: ofpart partition %pOF (%pOF) error parsing reg property.\n",
-+ master->name, pp,
-+ mtd_node);
-+ continue;
-+ }
-+
-+ part.offset = of_read_number(reg, a_cells);
-+ part.size = of_read_number(reg + a_cells, s_cells);
-+ part.of_node = pp;
-+
-+ partname = of_get_property(pp, "label", &len);
-+ if (!partname)
-+ partname = of_get_property(pp, "name", &len);
-+ part.name = partname;
-+
-+ if (!strncmp(target_part->name, part.name, len)) {
-+ if (part.offset != target_part->offset)
-+ return -EINVAL;
-+
-+ if (part.size != target_part->size)
-+ return -EINVAL;
-+
-+ memcpy(fixed_part, &part, sizeof(struct mtd_partition));
-+ return 0;
-+ }
-+ }
-+
-+ return -EINVAL;
-+}
-+
- /*
- * Main function to be called from the MTD mapping driver/device to
- * obtain the partitioning information. At this point the command line
-@@ -338,6 +401,7 @@ static int parse_cmdline_partitions(stru
- int i, err;
- struct cmdline_mtd_partition *part;
- const char *mtd_id = master->name;
-+ struct mtd_partition fixed_part;
-
- /* parse command line */
- if (!cmdline_parsed) {
-@@ -382,6 +446,13 @@ static int parse_cmdline_partitions(stru
- sizeof(*part->parts) * (part->num_parts - i));
- i--;
- }
-+
-+ err = search_fixed_partition(master, &part->parts[i], &fixed_part);
-+ if (!err) {
-+ part->parts[i].of_node = fixed_part.of_node;
-+ pr_info("Found partition defined in DT for %s. Assigning OF node to support nvmem.",
-+ part->parts[i].name);
-+ }
- }
-
- *pparts = kmemdup(part->parts, sizeof(*part->parts) * part->num_parts,
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat Apr 10 17:00:57 2021 +0200
+Subject: [PATCH] mtd: fix squashfs root on targets with CONFIG_FIT_PARTITION
+
+Fix assumption about the block device index
+---
+
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -767,6 +767,9 @@ int add_mtd_device(struct mtd_info *mtd)
+ unsigned int index = mtd->index;
+ pr_notice("mtd: device %d (%s) set to be root filesystem\n",
+ mtd->index, mtd->name);
++#ifdef CONFIG_FIT_PARTITION
++ index <<= 2;
++#endif
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, index);
+ }
+
--- /dev/null
+From 6fa9e3678eb002246df1280322b6a024853950a5 Mon Sep 17 00:00:00 2001
+From: Ansuel Smith <ansuelsmth@gmail.com>
+Date: Mon, 11 Oct 2021 00:53:14 +0200
+Subject: [PATCH] drivers: mtd: parsers: add nvmem support to cmdlinepart
+
+Assuming cmdlinepart is only one level deep partition scheme and that
+static partition are also defined in DTS, we can assign an of_node for
+partition declared from bootargs. cmdlinepart have priority than
+fiexed-partition parser so in this specific case the parser doesn't
+assign an of_node. Fix this by searching a defined of_node using a
+similar fixed_partition parser and if a partition is found with the same
+label, check that it has the same offset and size and return the DT
+of_node to correctly use NVMEM cells.
+
+Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
+---
+ drivers/mtd/parsers/cmdlinepart.c | 71 +++++++++++++++++++++++++++++++
+ 1 file changed, 71 insertions(+)
+
+--- a/drivers/mtd/parsers/cmdlinepart.c
++++ b/drivers/mtd/parsers/cmdlinepart.c
+@@ -43,6 +43,7 @@
+ #include <linux/mtd/partitions.h>
+ #include <linux/module.h>
+ #include <linux/err.h>
++#include <linux/of.h>
+
+ /* debug macro */
+ #if 0
+@@ -323,6 +324,68 @@ static int mtdpart_setup_real(char *s)
+ return 0;
+ }
+
++static int search_fixed_partition(struct mtd_info *master,
++ struct mtd_partition *target_part,
++ struct mtd_partition *fixed_part)
++{
++ struct device_node *mtd_node;
++ struct device_node *ofpart_node;
++ struct device_node *pp;
++ struct mtd_partition part;
++ const char *partname;
++
++ mtd_node = mtd_get_of_node(master);
++ if (!mtd_node)
++ return -EINVAL;
++
++ ofpart_node = of_get_child_by_name(mtd_node, "partitions");
++
++ for_each_child_of_node(ofpart_node, pp) {
++ const __be32 *reg;
++ int len;
++ int a_cells, s_cells;
++
++ reg = of_get_property(pp, "reg", &len);
++ if (!reg) {
++ pr_debug("%s: ofpart partition %pOF (%pOF) missing reg property.\n",
++ master->name, pp,
++ mtd_node);
++ continue;
++ }
++
++ a_cells = of_n_addr_cells(pp);
++ s_cells = of_n_size_cells(pp);
++ if (len / 4 != a_cells + s_cells) {
++ pr_debug("%s: ofpart partition %pOF (%pOF) error parsing reg property.\n",
++ master->name, pp,
++ mtd_node);
++ continue;
++ }
++
++ part.offset = of_read_number(reg, a_cells);
++ part.size = of_read_number(reg + a_cells, s_cells);
++ part.of_node = pp;
++
++ partname = of_get_property(pp, "label", &len);
++ if (!partname)
++ partname = of_get_property(pp, "name", &len);
++ part.name = partname;
++
++ if (!strncmp(target_part->name, part.name, len)) {
++ if (part.offset != target_part->offset)
++ return -EINVAL;
++
++ if (part.size != target_part->size)
++ return -EINVAL;
++
++ memcpy(fixed_part, &part, sizeof(struct mtd_partition));
++ return 0;
++ }
++ }
++
++ return -EINVAL;
++}
++
+ /*
+ * Main function to be called from the MTD mapping driver/device to
+ * obtain the partitioning information. At this point the command line
+@@ -338,6 +401,7 @@ static int parse_cmdline_partitions(stru
+ int i, err;
+ struct cmdline_mtd_partition *part;
+ const char *mtd_id = master->name;
++ struct mtd_partition fixed_part;
+
+ /* parse command line */
+ if (!cmdline_parsed) {
+@@ -382,6 +446,13 @@ static int parse_cmdline_partitions(stru
+ sizeof(*part->parts) * (part->num_parts - i));
+ i--;
+ }
++
++ err = search_fixed_partition(master, &part->parts[i], &fixed_part);
++ if (!err) {
++ part->parts[i].of_node = fixed_part.of_node;
++ pr_info("Found partition defined in DT for %s. Assigning OF node to support nvmem.",
++ part->parts[i].name);
++ }
+ }
+
+ *pparts = kmemdup(part->parts, sizeof(*part->parts) * part->num_parts,
projects / openwrt / openwrt.git / commitdiff