adm5120: Remove unmaintained target

This target only supports kernel 3.18, which is not supported in OpenWrt
any more for multiple releases. It also looks like there is no active
maintainer for this target.
Remove the code and all the packages which are only used by this target.

To add this target to OpenWrt again port it to a recent and supported
kernel version.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 0 insertions, 316 deletions

diff --git a/target/linux/adm5120/patches-3.18/100-rootfs_split.patch b/target/linux/adm5120/patches-3.18/100-rootfs_split.patch
deleted file mode 100644
index aa1ede5e32..0000000000
--- a/target/linux/adm5120/patches-3.18/100-rootfs_split.patch
+++ /dev/null
@@ -1,316 +0,0 @@
---- a/drivers/mtd/Kconfig
-+++ b/drivers/mtd/Kconfig
-@@ -52,6 +52,14 @@ config MTD_TESTS
- 	  WARNING: some of the tests will ERASE entire MTD device which they
- 	  test. Do not use these tests unless you really know what you do.
- 
-+config MTD_ROOTFS_ROOT_DEV
-+	bool "Automatically set 'rootfs' partition to be root filesystem"
-+	default y
-+
-+config MTD_ROOTFS_SPLIT
-+	bool "Automatically split 'rootfs' partition for squashfs"
-+	default y
-+
- config MTD_REDBOOT_PARTS
- 	tristate "RedBoot partition table parsing"
- 	---help---
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -30,6 +30,8 @@
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
- #include <linux/of.h>
-+#include <linux/root_dev.h>
-+#include <linux/magic.h>
- #include <linux/err.h>
- 
- #include "mtdcore.h"
-@@ -53,7 +55,7 @@ struct mtd_part {
-  * the pointer to that structure with this macro.
-  */
- #define PART(x)  ((struct mtd_part *)(x))
--
-+#define IS_PART(mtd) (mtd->_read == part_read)
- 
- /*
-  * MTD methods which simply translate the effective address and pass through
-@@ -706,6 +708,144 @@ int mtd_del_partition(struct mtd_info *m
- }
- EXPORT_SYMBOL_GPL(mtd_del_partition);
- 
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+#define ROOTFS_SPLIT_NAME "rootfs_data"
-+#define ROOTFS_REMOVED_NAME "<removed>"
-+
-+struct squashfs_super_block {
-+	__le32 s_magic;
-+	__le32 pad0[9];
-+	__le64 bytes_used;
-+};
-+
-+
-+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
-+{
-+	struct squashfs_super_block sb;
-+	int len, ret;
-+
-+	ret = mtd_read(master, offset, sizeof(sb), &len, (void *) &sb);
-+	if (ret || (len != sizeof(sb))) {
-+		printk(KERN_ALERT "split_squashfs: error occured while reading "
-+			"from \"%s\"\n", master->name);
-+		return -EINVAL;
-+	}
-+
-+	if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) {
-+		printk(KERN_ALERT "split_squashfs: no squashfs found in \"%s\"\n",
-+			master->name);
-+		*split_offset = 0;
-+		return 0;
-+	}
-+
-+	if (le64_to_cpu((sb.bytes_used)) <= 0) {
-+		printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
-+			master->name);
-+		*split_offset = 0;
-+		return 0;
-+	}
-+
-+	len = (u32) le64_to_cpu(sb.bytes_used);
-+	len += (offset & 0x000fffff);
-+	len +=  (master->erasesize - 1);
-+	len &= ~(master->erasesize - 1);
-+	len -= (offset & 0x000fffff);
-+	*split_offset = offset + len;
-+
-+	return 0;
-+}
-+
-+static int split_rootfs_data(struct mtd_info *master, struct mtd_info *rpart, const struct mtd_partition *part)
-+{
-+	struct mtd_partition dpart;
-+	struct mtd_part *slave = NULL;
-+	struct mtd_part *spart;
-+	int ret, split_offset = 0;
-+
-+	spart = PART(rpart);
-+	ret = split_squashfs(master, spart->offset, &split_offset);
-+	if (ret)
-+		return ret;
-+
-+	if (split_offset <= 0)
-+		return 0;
-+
-+	memcpy(&dpart, part, sizeof(dpart));
-+	dpart.name = ROOTFS_SPLIT_NAME;
-+
-+	dpart.size = rpart->size - (split_offset - spart->offset);
-+	dpart.offset = split_offset;
-+
-+	printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%llX, len=%llX \n",
-+		ROOTFS_SPLIT_NAME, dpart.offset, dpart.size);
-+
-+	slave = allocate_partition(master, &dpart, 0, split_offset);
-+	if (IS_ERR(slave))
-+		return PTR_ERR(slave);
-+	mutex_lock(&mtd_partitions_mutex);
-+	list_add(&slave->list, &mtd_partitions);
-+	mutex_unlock(&mtd_partitions_mutex);
-+
-+	add_mtd_device(&slave->mtd);
-+
-+	rpart->split = &slave->mtd;
-+
-+	return 0;
-+}
-+
-+static int refresh_rootfs_split(struct mtd_info *mtd)
-+{
-+	struct mtd_partition tpart;
-+	struct mtd_part *part;
-+	char *name;
-+	//int index = 0;
-+	int offset, size;
-+	int ret;
-+
-+	part = PART(mtd);
-+
-+	/* check for the new squashfs offset first */
-+	ret = split_squashfs(part->master, part->offset, &offset);
-+	if (ret)
-+		return ret;
-+
-+	if ((offset > 0) && !mtd->split) {
-+		printk(KERN_INFO "%s: creating new split partition for \"%s\"\n", __func__, mtd->name);
-+		/* if we don't have a rootfs split partition, create a new one */
-+		tpart.name = (char *) mtd->name;
-+		tpart.size = mtd->size;
-+		tpart.offset = part->offset;
-+
-+		return split_rootfs_data(part->master, &part->mtd, &tpart);
-+	} else if ((offset > 0) && mtd->split) {
-+		/* update the offsets of the existing partition */
-+		size = mtd->size + part->offset - offset;
-+
-+		part = PART(mtd->split);
-+		part->offset = offset;
-+		part->mtd.size = size;
-+		printk(KERN_INFO "%s: %s partition \"" ROOTFS_SPLIT_NAME "\", offset: 0x%06x (0x%06x)\n",
-+			__func__, (!strcmp(part->mtd.name, ROOTFS_SPLIT_NAME) ? "updating" : "creating"),
-+			(u32) part->offset, (u32) part->mtd.size);
-+		name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
-+		strcpy(name, ROOTFS_SPLIT_NAME);
-+		part->mtd.name = name;
-+	} else if ((offset <= 0) && mtd->split) {
-+		printk(KERN_INFO "%s: removing partition \"%s\"\n", __func__, mtd->split->name);
-+
-+		/* mark existing partition as removed */
-+		part = PART(mtd->split);
-+		name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
-+		strcpy(name, ROOTFS_REMOVED_NAME);
-+		part->mtd.name = name;
-+		part->offset = 0;
-+		part->mtd.size = 0;
-+	}
-+
-+	return 0;
-+}
-+#endif /* CONFIG_MTD_ROOTFS_SPLIT */
-+
- /*
-  * This function, given a master MTD object and a partition table, creates
-  * and registers slave MTD objects which are bound to the master according to
-@@ -722,6 +862,9 @@ int add_mtd_partitions(struct mtd_info *
- 	struct mtd_part *slave;
- 	uint64_t cur_offset = 0;
- 	int i;
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+	int ret;
-+#endif
- 
- 	printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
- 
-@@ -736,12 +879,53 @@ int add_mtd_partitions(struct mtd_info *
- 
- 		add_mtd_device(&slave->mtd);
- 
-+		if (!strcmp(parts[i].name, "rootfs")) {
-+#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
-+			if (ROOT_DEV == 0) {
-+				printk(KERN_NOTICE "mtd: partition \"rootfs\" "
-+					"set to be root filesystem\n");
-+				ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
-+			}
-+#endif
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+			ret = split_rootfs_data(master, &slave->mtd, &parts[i]);
-+			/* if (ret == 0)
-+			 * 	j++; */
-+#endif
-+		}
-+
- 		cur_offset = slave->offset + slave->mtd.size;
- 	}
- 
- 	return 0;
- }
- 
-+int mtd_device_refresh(struct mtd_info *mtd)
-+{
-+	int ret = 0;
-+
-+	if (IS_PART(mtd)) {
-+		struct mtd_part *part;
-+		struct mtd_info *master;
-+
-+		part = PART(mtd);
-+		master = part->master;
-+		if (master->refresh_device)
-+			ret = master->refresh_device(master);
-+	}
-+
-+	if (!ret && mtd->refresh_device)
-+		ret = mtd->refresh_device(mtd);
-+
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+	if (!ret && IS_PART(mtd) && !strcmp(mtd->name, "rootfs"))
-+		refresh_rootfs_split(mtd);
-+#endif
-+
-+	return 0;
-+}
-+EXPORT_SYMBOL_GPL(mtd_device_refresh);
-+
- static DEFINE_SPINLOCK(part_parser_lock);
- static LIST_HEAD(part_parsers);
- 
---- a/drivers/mtd/mtdchar.c
-+++ b/drivers/mtd/mtdchar.c
-@@ -1012,6 +1012,12 @@ static int mtdchar_ioctl(struct file *fi
- 		break;
- 	}
- 
-+	case MTDREFRESH:
-+	{
-+		ret = mtd_device_refresh(mtd);
-+		break;
-+	}
-+
- 	default:
- 		ret = -ENOTTY;
- 	}
---- a/include/linux/mtd/mtd.h
-+++ b/include/linux/mtd/mtd.h
-@@ -115,6 +115,7 @@ struct nand_ecclayout {
- 
- struct module;	/* only needed for owner field in mtd_info */
- 
-+struct mtd_info;
- struct mtd_info {
- 	u_char type;
- 	uint32_t flags;
-@@ -231,6 +232,9 @@ struct mtd_info {
- 	int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
- 	int (*_suspend) (struct mtd_info *mtd);
- 	void (*_resume) (struct mtd_info *mtd);
-+	int (*refresh_device)(struct mtd_info *mtd);
-+	struct mtd_info *split;
-+
- 	/*
- 	 * If the driver is something smart, like UBI, it may need to maintain
- 	 * its own reference counting. The below functions are only for driver.
-@@ -397,6 +401,7 @@ extern int mtd_device_parse_register(str
- 				     int defnr_parts);
- #define mtd_device_register(master, parts, nr_parts)	\
- 	mtd_device_parse_register(master, NULL, NULL, parts, nr_parts)
-+extern int mtd_device_refresh(struct mtd_info *master);
- extern int mtd_device_unregister(struct mtd_info *master);
- extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
- extern int __get_mtd_device(struct mtd_info *mtd);
---- a/include/linux/mtd/partitions.h
-+++ b/include/linux/mtd/partitions.h
-@@ -37,12 +37,14 @@
-  */
- struct mtd_info;
- 
-+struct mtd_partition;
- struct mtd_partition {
- 	const char *name;		/* identifier string */
- 	uint64_t size;			/* partition size */
- 	uint64_t offset;		/* offset within the master MTD space */
- 	uint32_t mask_flags;		/* master MTD flags to mask out for this partition */
- 	struct nand_ecclayout *ecclayout;	/* out of band layout for this partition (NAND only) */
-+	int (*refresh_partition)(struct mtd_info *);
- };
- 
- #define MTDPART_OFS_RETAIN	(-3)
---- a/include/uapi/mtd/mtd-abi.h
-+++ b/include/uapi/mtd/mtd-abi.h
-@@ -203,6 +203,7 @@ struct otp_info {
-  * without OOB, e.g., NOR flash.
-  */
- #define MEMWRITE		_IOWR('M', 24, struct mtd_write_req)
-+#define MTDREFRESH		_IO('M', 50)
- 
- /*
-  * Obsolete legacy interface. Keep it in order not to break userspace