openwrt/target/linux/lantiq/patches-4.19/0101-find_active_root.patch
Hauke Mehrtens f0c740650b lantiq: make patches apply
The following patches are dropped because they are now upstreamed:
- 0002-gpio-stp-xway-Implement-get-callback.patch
  upstreamed with commit 5b9b2b5284f819 ("gpio: stp-xway: Implement get
  callback")
- 0027-01-net-phy-intel-xway-add-VR9-version-number.patch
  upstreamed with commit 5b73d9955fb4b0 ("net: phy: intel-xway: add VR9
  version number")
- 0027-02-net-phy-intel-xway-add-VR9-v1.1-phy-ids.patch
  upstreamed with commit f452518c982e57 ("net: phy: intel-xway: add VR9
  v1.1 phy ids")

The following patches were updated:
- 0018-MTD-nand-lots-of-xrx200-fixes.patch
  the mainline driver now resides in drivers/mtd/nand/raw/xway_nand.c
  (instead of drivers/mtd/nand/xway_nand.c)
- 0025-NET-MIPS-lantiq-adds-xrx200-net.patch
  the DMA API now requires a valid device to be passed to all operations
- 0028-NET-lantiq-various-etop-fixes.patch
  the DMA API now requires a valid device to be passed to all operations

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
2019-07-04 08:29:13 +02:00

94 lines
2.2 KiB
Diff

--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -25,6 +25,38 @@ static bool node_has_compatible(struct d
return of_get_property(pp, "compatible", NULL);
}
+static uint8_t * brnboot_get_selected_root_part(struct mtd_info *master,
+ loff_t offset)
+{
+ static uint8_t root_id;
+ int err, len;
+
+ err = mtd_read(master, offset, 0x01, &len, &root_id);
+
+ if (mtd_is_bitflip(err) || !err)
+ return &root_id;
+
+ return NULL;
+}
+
+static void brnboot_set_active_root_part(struct mtd_partition *pparts,
+ struct device_node **part_nodes,
+ int nr_parts,
+ uint8_t *root_id)
+{
+ int i;
+
+ for (i = 0; i < nr_parts; i++) {
+ int part_root_id;
+
+ if (!of_property_read_u32(part_nodes[i], "brnboot,root-id", &part_root_id)
+ && part_root_id == *root_id) {
+ pparts[i].name = "firmware";
+ break;
+ }
+ }
+}
+
static int parse_fixed_partitions(struct mtd_info *master,
const struct mtd_partition **pparts,
struct mtd_part_parser_data *data)
@@ -36,7 +68,8 @@ static int parse_fixed_partitions(struct
struct device_node *pp;
int nr_parts, i, ret = 0;
bool dedicated = true;
-
+ uint8_t *proot_id = NULL;
+ struct device_node **part_nodes;
/* Pull of_node from the master device node */
mtd_node = mtd_get_of_node(master);
@@ -72,7 +105,9 @@ static int parse_fixed_partitions(struct
return 0;
parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL);
- if (!parts)
+ part_nodes = kcalloc(nr_parts, sizeof(*part_nodes), GFP_KERNEL);
+
+ if (!parts || !part_nodes)
return -ENOMEM;
i = 0;
@@ -121,12 +156,22 @@ static int parse_fixed_partitions(struct
if (of_get_property(pp, "lock", &len))
parts[i].mask_flags |= MTD_POWERUP_LOCK;
+ if (!proot_id && of_device_is_compatible(pp, "brnboot,root-selector"))
+ proot_id = brnboot_get_selected_root_part(master, parts[i].offset);
+
+ part_nodes[i] = pp;
+
i++;
}
if (!nr_parts)
goto ofpart_none;
+ if (proot_id)
+ brnboot_set_active_root_part(parts, part_nodes, nr_parts, proot_id);
+
+ kfree(part_nodes);
+
*pparts = parts;
return nr_parts;
@@ -137,6 +182,7 @@ ofpart_fail:
ofpart_none:
of_node_put(pp);
kfree(parts);
+ kfree(part_nodes);
return ret;
}