openwrt/target/linux/ar7/patches-4.9/920-ar7part.patch

--- a/drivers/mtd/ar7part.c
+++ b/drivers/mtd/ar7part.c
@@ -30,11 +30,14 @@
 
 #include <uapi/linux/magic.h>
 
+#include <asm/mach-ar7/prom.h>
+
 #define AR7_PARTS	4
 #define ROOT_OFFSET	0xe0000
 
 #define LOADER_MAGIC1	le32_to_cpu(0xfeedfa42)
 #define LOADER_MAGIC2	le32_to_cpu(0xfeed1281)
+#define LOADER_MAGIC3	le32_to_cpu(0x434d4d4c)
 
 struct ar7_bin_rec {
 	unsigned int checksum;
@@ -42,12 +45,16 @@ struct ar7_bin_rec {
 	unsigned int address;
 };
 
+int create_titan_partitions(struct mtd_info *master,
+        const struct mtd_partition **pparts,
+        struct mtd_part_parser_data *data);
+
 static int create_mtd_partitions(struct mtd_info *master,
 				 const struct mtd_partition **pparts,
 				 struct mtd_part_parser_data *data)
 {
 	struct ar7_bin_rec header;
-	unsigned int offset;
+	unsigned int offset, mtd_start, mtd_end;
 	size_t len;
 	unsigned int pre_size = master->erasesize, post_size = 0;
 	unsigned int root_offset = ROOT_OFFSET;
@@ -55,6 +62,16 @@ static int create_mtd_partitions(struct
 	int retries = 10;
 	struct mtd_partition *ar7_parts;
 
+	const char *prom_str = prom_getenv("ProductID");
+	char mtd_name[] = "mtd1";
+	if(prom_str &&
+		(strcmp(prom_str, "CYWL")==0 ||
+		strcmp(prom_str, "CYWM")==0 ||
+		strcmp(prom_str, "CYLM")==0 ||
+		strcmp(prom_str, "CYLL")==0)){
+		return create_titan_partitions(master, pparts, data);
+	}
+
 	ar7_parts = kzalloc(sizeof(*ar7_parts) * AR7_PARTS, GFP_KERNEL);
 	if (!ar7_parts)
 		return -ENOMEM;
@@ -83,34 +100,39 @@ static int create_mtd_partitions(struct
 
 	pre_size = offset;
 
-	if (!ar7_parts[1].offset) {
-		ar7_parts[1].offset = master->size - master->erasesize;
-		post_size = master->erasesize;
-	}
-
 	switch (header.checksum) {
-	case LOADER_MAGIC1:
-		while (header.length) {
-			offset += sizeof(header) + header.length;
-			mtd_read(master, offset, sizeof(header), &len,
-				 (uint8_t *)&header);
-		}
-		root_offset = offset + sizeof(header) + 4;
-		break;
 	case LOADER_MAGIC2:
+		for (retries = 0; retries <= 9; retries++) {
+			mtd_name[3] = '0' + retries;
+			prom_str = prom_getenv(mtd_name);
+			if (prom_str == NULL)
+				continue;
+			sscanf(prom_str, "%i,%i", &mtd_start, &mtd_end);
+			if (pre_size == (mtd_start & 0x1ffffff)) {
+				ar7_parts[1].offset = mtd_end &= 0x1ffffff;
+				ar7_parts[1].size = post_size = master->size - mtd_end;
+				break;
+			}
+		}
+	case LOADER_MAGIC1:
+		root_offset = (header.checksum == LOADER_MAGIC1) ? 4 : 0;
 		while (header.length) {
 			offset += sizeof(header) + header.length;
 			mtd_read(master, offset, sizeof(header), &len,
 				 (uint8_t *)&header);
 		}
-		root_offset = offset + sizeof(header) + 4 + 0xff;
-		root_offset &= ~(uint32_t)0xff;
+		root_offset += offset + sizeof(header);
 		break;
 	default:
 		printk(KERN_WARNING "Unknown magic: %08x\n", header.checksum);
 		break;
 	}
 
+	if (!ar7_parts[1].offset) {
+		post_size = master->erasesize;
+		ar7_parts[1].offset = master->size - post_size;
+	}
+
 	mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header);
 	if (header.checksum != SQUASHFS_MAGIC) {
 		root_offset += master->erasesize - 1;
--- a/drivers/mtd/titanpart.c
+++ b/drivers/mtd/titanpart.c
@@ -148,8 +148,8 @@ static void titan_add_partition(char * e
 
 }
 int create_titan_partitions(struct mtd_info *master,
-	struct mtd_partition **pparts,
-	unsigned long origin)
+	const struct mtd_partition **pparts,
+	struct mtd_part_parser_data *data)
 {
 	struct nsp_img_hdr_head		hdr;
 	struct nsp_img_hdr_section_info	sect_info;