bump lts kernels, add yaffs2 kernel patch

59 files changed, 66191 insertions, 101251 deletions

diff --git a/target/linux/patches/3.10.37/bsd-compatibility.patch b/target/linux/patches/3.10.40/bsd-compatibility.patch
index b954b658f..b954b658f 100644
--- a/target/linux/patches/3.10.37/bsd-compatibility.patch
+++ b/target/linux/patches/3.10.40/bsd-compatibility.patch
diff --git a/target/linux/patches/3.10.37/startup.patch b/target/linux/patches/3.10.40/startup.patch
index 3ebc5db1e..3ebc5db1e 100644
--- a/target/linux/patches/3.10.37/startup.patch
+++ b/target/linux/patches/3.10.40/startup.patch
diff --git a/target/linux/patches/3.10.40/yaffs2.patch b/target/linux/patches/3.10.40/yaffs2.patch
new file mode 100644
index 000000000..172629530
--- /dev/null
+++ b/target/linux/patches/3.10.40/yaffs2.patch
@@ -0,0 +1,16547 @@
+diff -Nur linux-3.10.40.orig/fs/Kconfig linux-3.10.40/fs/Kconfig
+--- linux-3.10.40.orig/fs/Kconfig	2014-05-13 14:00:04.000000000 +0200
++++ linux-3.10.40/fs/Kconfig	2014-05-17 12:48:10.000000000 +0200
+@@ -193,6 +193,7 @@
+ source "fs/befs/Kconfig"
+ source "fs/bfs/Kconfig"
+ source "fs/efs/Kconfig"
++source "fs/yaffs2/Kconfig"
+ source "fs/jffs2/Kconfig"
+ # UBIFS File system configuration
+ source "fs/ubifs/Kconfig"
+diff -Nur linux-3.10.40.orig/fs/Makefile linux-3.10.40/fs/Makefile
+--- linux-3.10.40.orig/fs/Makefile	2014-05-13 14:00:04.000000000 +0200
++++ linux-3.10.40/fs/Makefile	2014-05-17 12:48:10.000000000 +0200
+@@ -126,3 +126,4 @@
+ obj-$(CONFIG_CEPH_FS)		+= ceph/
+ obj-$(CONFIG_PSTORE)		+= pstore/
+ obj-$(CONFIG_EFIVAR_FS)		+= efivarfs/
++obj-$(CONFIG_YAFFS_FS)		+= yaffs2/
+diff -Nur linux-3.10.40.orig/fs/yaffs2/Kconfig linux-3.10.40/fs/yaffs2/Kconfig
+--- linux-3.10.40.orig/fs/yaffs2/Kconfig	1970-01-01 01:00:00.000000000 +0100
++++ linux-3.10.40/fs/yaffs2/Kconfig	2014-05-17 12:48:10.000000000 +0200
+@@ -0,0 +1,171 @@
++#
++# yaffs file system configurations
++#
++
++config YAFFS_FS
++	tristate "yaffs2 file system support"
++	default n
++	depends on MTD_BLOCK
++	select YAFFS_YAFFS1
++	select YAFFS_YAFFS2
++	help
++	  yaffs2, or Yet Another Flash File System, is a file system
++	  optimised for NAND Flash chips.
++
++	  To compile the yaffs2 file system support as a module, choose M
++	  here: the module will be called yaffs2.
++
++	  If unsure, say N.
++
++	  Further information on yaffs2 is available at
++	  <http://www.aleph1.co.uk/yaffs/>.
++
++config YAFFS_YAFFS1
++	bool "512 byte / page devices"
++	depends on YAFFS_FS
++	default y
++	help
++	  Enable yaffs1 support -- yaffs for 512 byte / page devices
++
++	  Not needed for 2K-page devices.
++
++	  If unsure, say Y.
++
++config YAFFS_9BYTE_TAGS
++	bool "Use older-style on-NAND data format with pageStatus byte"
++	depends on YAFFS_YAFFS1
++	default n
++	help
++
++	  Older-style on-NAND data format has a "pageStatus" byte to record
++	  chunk/page state.  This byte is zero when the page is discarded.
++	  Choose this option if you have existing on-NAND data using this
++	  format that you need to continue to support.  New data written
++	  also uses the older-style format.  Note: Use of this option
++	  generally requires that MTD's oob layout be adjusted to use the
++	  older-style format.  See notes on tags formats and MTD versions
++	  in yaffs_mtdif1.c.
++
++	  If unsure, say N.
++
++config YAFFS_DOES_ECC
++	bool "Lets yaffs do its own ECC"
++	depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
++	default n
++	help
++	  This enables yaffs to use its own ECC functions instead of using
++	  the ones from the generic MTD-NAND driver.
++
++	  If unsure, say N.
++
++config YAFFS_ECC_WRONG_ORDER
++	bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
++	depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS
++	default n
++	help
++	  This makes yaffs_ecc.c use the same ecc byte order as Steven
++	  Hill's nand_ecc.c. If not set, then you get the same ecc byte
++	  order as SmartMedia.
++
++	  If unsure, say N.
++
++config YAFFS_YAFFS2
++	bool "2048 byte (or larger) / page devices"
++	depends on YAFFS_FS
++	default y
++	help
++	  Enable yaffs2 support -- yaffs for >= 2K bytes per page devices
++
++	  If unsure, say Y.
++
++config YAFFS_AUTO_YAFFS2
++	bool "Autoselect yaffs2 format"
++	depends on YAFFS_YAFFS2
++	default y
++	help
++	  Without this, you need to explicitely use yaffs2 as the file
++	  system type. With this, you can say "yaffs" and yaffs or yaffs2
++	  will be used depending on the device page size (yaffs on
++	  512-byte page devices, yaffs2 on 2K page devices).
++
++	  If unsure, say Y.
++
++config YAFFS_DISABLE_TAGS_ECC
++	bool "Disable yaffs from doing ECC on tags by default"
++	depends on YAFFS_FS && YAFFS_YAFFS2
++	default n
++	help
++	  This defaults yaffs to using its own ECC calculations on tags instead of
++	  just relying on the MTD.
++	  This behavior can also be overridden with tags_ecc_on and
++	  tags_ecc_off mount options.
++
++	  If unsure, say N.
++
++config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
++	bool "Force chunk erase check"
++	depends on YAFFS_FS
++	default n
++	help
++          Normally yaffs only checks chunks before writing until an erased
++	  chunk is found. This helps to detect any partially written
++	  chunks that might have happened due to power loss.
++
++	  Enabling this forces on the test that chunks are erased in flash
++	  before writing to them. This takes more time but is potentially
++	  a bit more secure.
++
++	  Suggest setting Y during development and ironing out driver
++	  issues etc. Suggest setting to N if you want faster writing.
++
++	  If unsure, say Y.
++
++config YAFFS_EMPTY_LOST_AND_FOUND
++	bool "Empty lost and found on boot"
++	depends on YAFFS_FS
++	default n
++	help
++	  If this is enabled then the contents of lost and found is
++	  automatically dumped at mount.
++
++	  If unsure, say N.
++
++config YAFFS_DISABLE_BLOCK_REFRESHING
++	bool "Disable yaffs2 block refreshing"
++	depends on YAFFS_FS
++	default n
++	help
++	 If this is set, then block refreshing is disabled.
++	 Block refreshing infrequently refreshes the oldest block in
++	 a yaffs2 file system. This mechanism helps to refresh flash to
++	 mitigate against data loss. This is particularly useful for MLC.
++
++	  If unsure, say N.
++
++config YAFFS_DISABLE_BACKGROUND
++	bool "Disable yaffs2 background processing"
++	depends on YAFFS_FS
++	default n
++	help
++	 If this is set, then background processing is disabled.
++	 Background processing makes many foreground activities faster.
++
++	 If unsure, say N.
++
++config YAFFS_DISABLE_BAD_BLOCK_MARKING
++	bool "Disable yaffs2 bad block marking"
++	depends on YAFFS_FS
++	default n
++	help
++	 Useful during early flash bring up to prevent problems causing
++	 lots of bad block marking.
++
++	 If unsure, say N.
++
++config YAFFS_XATTR
++	bool "Enable yaffs2 xattr support"
++	depends on YAFFS_FS
++	default y
++	help
++	 If this is set then yaffs2 will provide xattr support.
++	 If unsure, say Y.
+diff -Nur linux-3.10.40.orig/fs/yaffs2/Makefile linux-3.10.40/fs/yaffs2/Makefile
+--- linux-3.10.40.orig/fs/yaffs2/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ linux-3.10.40/fs/yaffs2/Makefile	2014-05-17 12:48:10.000000000 +0200
+@@ -0,0 +1,18 @@
++#
++# Makefile for the linux YAFFS filesystem routines.
++#
++
++obj-$(CONFIG_YAFFS_FS) += yaffs.o
++
++yaffs-y := yaffs_ecc.o yaffs_vfs.o yaffs_guts.o yaffs_checkptrw.o
++yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
++yaffs-y += yaffs_tagscompat.o yaffs_tagsmarshall.o
++yaffs-y += yaffs_mtdif.o
++yaffs-y += yaffs_nameval.o yaffs_attribs.o
++yaffs-y += yaffs_allocator.o
++yaffs-y += yaffs_yaffs1.o
++yaffs-y += yaffs_yaffs2.o
++yaffs-y += yaffs_bitmap.o
++yaffs-y += yaffs_summary.o
++yaffs-y += yaffs_verify.o
++
+diff -Nur linux-3.10.40.orig/fs/yaffs2/yaffs_allocator.c linux-3.10.40/fs/yaffs2/yaffs_allocator.c
+--- linux-3.10.40.orig/fs/yaffs2/yaffs_allocator.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-3.10.40/fs/yaffs2/yaffs_allocator.c	2014-05-17 12:48:10.000000000 +0200
+@@ -0,0 +1,357 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2011 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_allocator.h"
++#include "yaffs_guts.h"
++#include "yaffs_trace.h"
++#include "yportenv.h"
++
++/*
++ * Each entry in yaffs_tnode_list and yaffs_obj_list hold blocks
++ * of approx 100 objects that are themn allocated singly.
++ * This is basically a simplified slab allocator.
++ *
++ * We don't use the Linux slab allocator because slab does not allow
++ * us to dump all the objects in one hit when we do a umount and tear
++ * down  all the tnodes and objects. slab requires that we first free
++ * the individual objects.
++ *
++ * Once yaffs has been mainlined I shall try to motivate for a change
++ * to slab to provide the extra features we need here.
++ */
++
++struct yaffs_tnode_list {
++	struct yaffs_tnode_list *next;
++	struct yaffs_tnode *tnodes;
++};
++
++struct yaffs_obj_list {
++	struct yaffs_obj_list *next;
++	struct yaffs_obj *objects;
++};
++
++struct yaffs_allocator {
++	int n_tnodes_created;
++	struct yaffs_tnode *free_tnodes;
++	int n_free_tnodes;
++	struct yaffs_tnode_list *alloc_tnode_list;
++
++	int n_obj_created;
++	struct list_head free_objs;
++	int n_free_objects;
++
++	struct yaffs_obj_list *allocated_obj_list;
++};
++
++static void yaffs_deinit_raw_tnodes(struct yaffs_dev *dev)
++{
++	struct yaffs_allocator *allocator =
++	    (struct yaffs_allocator *)dev->allocator;
++	struct yaffs_tnode_list *tmp;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	while (allocator->alloc_tnode_list) {
++		tmp = allocator->alloc_tnode_list->next;
++
++		kfree(allocator->alloc_tnode_list->tnodes);
++		kfree(allocator->alloc_tnode_list);
++		allocator->alloc_tnode_list = tmp;
++	}
++
++	allocator->free_tnodes = NULL;
++	allocator->n_free_tnodes = 0;
++	allocator->n_tnodes_created = 0;
++}
++
++static void yaffs_init_raw_tnodes(struct yaffs_dev *dev)
++{
++	struct yaffs_allocator *allocator = dev->allocator;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	allocator->alloc_tnode_list = NULL;
++	allocator->free_tnodes = NULL;
++	allocator->n_free_tnodes = 0;
++	allocator->n_tnodes_created = 0;
++}
++
++static int yaffs_create_tnodes(struct yaffs_dev *dev, int n_tnodes)
++{
++	struct yaffs_allocator *allocator =
++	    (struct yaffs_allocator *)dev->allocator;
++	int i;
++	struct yaffs_tnode *new_tnodes;
++	u8 *mem;
++	struct yaffs_tnode *curr;
++	struct yaffs_tnode *next;
++	struct yaffs_tnode_list *tnl;
++
++	if (!allocator) {
++		BUG();
++		return YAFFS_FAIL;
++	}
++
++	if (n_tnodes < 1)
++		return YAFFS_OK;
++
++	/* make these things */
++	new_tnodes = kmalloc(n_tnodes * dev->tnode_size, GFP_NOFS);
++	mem = (u8 *) new_tnodes;
++
++	if (!new_tnodes) {
++		yaffs_trace(YAFFS_TRACE_ERROR,
++			"yaffs: Could not allocate Tnodes");
++		return YAFFS_FAIL;
++	}
++
++	/* New hookup for wide tnodes */
++	for (i = 0; i < n_tnodes - 1; i++) {
++		curr = (struct yaffs_tnode *)&mem[i * dev->tnode_size];
++		next = (struct yaffs_tnode *)&mem[(i + 1) * dev->tnode_size];
++		curr->internal[0] = next;
++	}
++
++	curr = (struct yaffs_tnode *)&mem[(n_tnodes - 1) * dev->tnode_size];
++	curr->internal[0] = allocator->free_tnodes;
++	allocator->free_tnodes = (struct yaffs_tnode *)mem;
++
++	allocator->n_free_tnodes += n_tnodes;
++	allocator->n_tnodes_created += n_tnodes;
++
++	/* Now add this bunch of tnodes to a list for freeing up.
++	 * NB If we can't add this to the management list it isn't fatal
++	 * but it just means we can't free this bunch of tnodes later.
++	 */
++	tnl = kmalloc(sizeof(struct yaffs_tnode_list), GFP_NOFS);
++	if (!tnl) {
++		yaffs_trace(YAFFS_TRACE_ERROR,
++			"Could not add tnodes to management list");
++		return YAFFS_FAIL;
++	} else {
++		tnl->tnodes = new_tnodes;
++		tnl->next = allocator->alloc_tnode_list;
++		allocator->alloc_tnode_list = tnl;
++	}
++
++	yaffs_trace(YAFFS_TRACE_ALLOCATE, "Tnodes added");
++
++	return YAFFS_OK;
++}
++
++struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
++{
++	struct yaffs_allocator *allocator =
++	    (struct yaffs_allocator *)dev->allocator;
++	struct yaffs_tnode *tn = NULL;
++
++	if (!allocator) {
++		BUG();
++		return NULL;
++	}
++
++	/* If there are none left make more */
++	if (!allocator->free_tnodes)
++		yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
++
++	if (allocator->free_tnodes) {
++		tn = allocator->free_tnodes;
++		allocator->free_tnodes = allocator->free_tnodes->internal[0];
++		allocator->n_free_tnodes--;
++	}
++
++	return tn;
++}
++
++/* FreeTnode frees up a tnode and puts it back on the free list */
++void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
++{
++	struct yaffs_allocator *allocator = dev->allocator;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	if (tn) {
++		tn->internal[0] = allocator->free_tnodes;
++		allocator->free_tnodes = tn;
++		allocator->n_free_tnodes++;
++	}
++	dev->checkpoint_blocks_required = 0;	/* force recalculation */
++}
++
++/*--------------- yaffs_obj alloaction ------------------------
++ *
++ * Free yaffs_objs are stored in a list using obj->siblings.
++ * The blocks of allocated objects are stored in a linked list.
++ */
++
++static void yaffs_init_raw_objs(struct yaffs_dev *dev)
++{
++	struct yaffs_allocator *allocator = dev->allocator;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	allocator->allocated_obj_list = NULL;
++	INIT_LIST_HEAD(&allocator->free_objs);
++	allocator->n_free_objects = 0;
++}
++
++static void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
++{
++	struct yaffs_allocator *allocator = dev->allocator;
++	struct yaffs_obj_list *tmp;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	while (allocator->allocated_obj_list) {
++		tmp = allocator->allocated_obj_list->next;
++		kfree(allocator->allocated_obj_list->objects);
++		kfree(allocator->allocated_obj_list);
++		allocator->allocated_obj_list = tmp;
++	}
++
++	INIT_LIST_HEAD(&allocator->free_objs);
++	allocator->n_free_objects = 0;
++	allocator->n_obj_created = 0;
++}
++
++static int yaffs_create_free_objs(struct yaffs_dev *dev, int n_obj)
++{
++	struct yaffs_allocator *allocator = dev->allocator;
++	int i;
++	struct yaffs_obj *new_objs;
++	struct yaffs_obj_list *list;
++
++	if (!allocator) {
++		BUG();
++		return YAFFS_FAIL;
++	}
++
++	if (n_obj < 1)
++		return YAFFS_OK;
++
++	/* make these things */
++	new_objs = kmalloc(n_obj * sizeof(struct yaffs_obj), GFP_NOFS);
++	list = kmalloc(sizeof(struct yaffs_obj_list), GFP_NOFS);
++
++	if (!new_objs || !list) {
++		kfree(new_objs);
++		new_objs = NULL;
++		kfree(list);
++		list = NULL;
++		yaffs_trace(YAFFS_TRACE_ALLOCATE,
++			"Could not allocate more objects");
++		return YAFFS_FAIL;
++	}
++
++	/* Hook them into the free list */
++	for (i = 0; i < n_obj; i++)
++		list_add(&new_objs[i].siblings, &allocator->free_objs);
++
++	allocator->n_free_objects += n_obj;
++	allocator->n_obj_created += n_obj;
++
++	/* Now add this bunch of Objects to a list for freeing up. */
++
++	list->objects = new_objs;
++	list->next = allocator->allocated_obj_list;
++	allocator->allocated_obj_list = list;
++
++	return YAFFS_OK;
++}
++
++struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
++{
++	struct yaffs_obj *obj = NULL;
++	struct list_head *lh;
++	struct yaffs_allocator *allocator = dev->allocator;
++
++	if (!allocator) {
++		BUG();
++		return obj;
++	}
++
++	/* If there are none left make more */
++	if (list_empty(&allocator->free_objs))
++		yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
++
++	if (!list_empty(&allocator->free_objs)) {
++		lh = allocator->free_objs.next;
++		obj = list_entry(lh, struct yaffs_obj, siblings);
++		list_del_init(lh);
++		allocator->n_free_objects--;
++	}
++
++	return obj;
++}
++
++void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
++{
++
++	struct yaffs_allocator *allocator = dev->allocator;
++
++	if (!allocator) {
++		BUG();
++		return;
++	}
++
++	/* Link into the free list. */
++	list_add(&obj->siblings, &allocator->free_objs);
++	allocator->n_free_objects++;
++}
++
++void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *de