[openwrt/openwrt] kernel: add support for ALLNET devices in mtdsplit

[LEDE Commits]

blogic pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/7bb1bd469e98ba4bfd0cf774a82c35039c9b721a

commit 7bb1bd469e98ba4bfd0cf774a82c35039c9b721a
Author: Birger Koblitz <git at birger-koblitz.de>
AuthorDate: Fri Sep 11 17:36:49 2020 +0200

    kernel: add support for ALLNET devices in mtdsplit
    
    Add support for uimage headers from ALLNET and provide support for the
    SG8208M and SG8310PM devices' magic bytes.
    
    Signed-off-by: Birger Koblitz <git at birger-koblitz.de>
---
 .../files/drivers/mtd/mtdsplit/mtdsplit_uimage.c   | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_uimage.c b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_uimage.c
index 7a9ec8acde..281175bae7 100644
--- a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_uimage.c
+++ b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_uimage.c
@@ -319,8 +319,57 @@ static struct mtd_part_parser uimage_netgear_parser = {
 	.of_match_table = mtdsplit_uimage_netgear_of_match_table,
 	.parse_fn = mtdsplit_uimage_parse_netgear,
 	.type = MTD_PARSER_TYPE_FIRMWARE,
+
+};
+
+
+/**************************************************
+ * ALLNET
+ **************************************************/
+
+#define FW_MAGIC_SG8208M	0x00000006
+#define FW_MAGIC_SG8310PM	0x83000006
+
+static ssize_t uimage_verify_allnet(u_char *buf, size_t len, int *extralen)
+{
+	struct uimage_header *header = (struct uimage_header *)buf;
+
+	switch (be32_to_cpu(header->ih_magic)) {
+	case FW_MAGIC_SG8208M:
+	case FW_MAGIC_SG8310PM:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (header->ih_os != IH_OS_LINUX)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int
+mtdsplit_uimage_parse_allnet(struct mtd_info *master,
+			      const struct mtd_partition **pparts,
+			      struct mtd_part_parser_data *data)
+{
+	return __mtdsplit_parse_uimage(master, pparts, data,
+				      uimage_verify_allnet);
+}
+
+static const struct of_device_id mtdsplit_uimage_allnet_of_match_table[] = {
+	{ .compatible = "allnet,uimage" },
+	{},
 };
 
+static struct mtd_part_parser uimage_allnet_parser = {
+	.owner = THIS_MODULE,
+	.name = "allnet-fw",
+	.of_match_table = mtdsplit_uimage_allnet_of_match_table,
+	.parse_fn = mtdsplit_uimage_parse_allnet,
+};
+
+
 /**************************************************
  * Edimax
  **************************************************/
@@ -505,6 +554,7 @@ static int __init mtdsplit_uimage_init(void)
 {
 	register_mtd_parser(&uimage_generic_parser);
 	register_mtd_parser(&uimage_netgear_parser);
+	register_mtd_parser(&uimage_allnet_parser);
 	register_mtd_parser(&uimage_edimax_parser);
 	register_mtd_parser(&uimage_fonfxc_parser);
 	register_mtd_parser(&uimage_sge_parser);