1 files changed, 0 insertions, 429 deletions

diff --git a/qemu/roms/u-boot/drivers/mtd/ubi/upd.c b/qemu/roms/u-boot/drivers/mtd/ubi/upd.c
deleted file mode 100644
index e597f82b8..000000000
--- a/qemu/roms/u-boot/drivers/mtd/ubi/upd.c
+++ /dev/null
@@ -1,429 +0,0 @@
-/*
- * Copyright (c) International Business Machines Corp., 2006
- * Copyright (c) Nokia Corporation, 2006
- *
- * SPDX-License-Identifier:	GPL-2.0+
- *
- * Author: Artem Bityutskiy (Битюцкий Артём)
- *
- * Jan 2007: Alexander Schmidt, hacked per-volume update.
- */
-
-/*
- * This file contains implementation of the volume update and atomic LEB change
- * functionality.
- *
- * The update operation is based on the per-volume update marker which is
- * stored in the volume table. The update marker is set before the update
- * starts, and removed after the update has been finished. So if the update was
- * interrupted by an unclean re-boot or due to some other reasons, the update
- * marker stays on the flash media and UBI finds it when it attaches the MTD
- * device next time. If the update marker is set for a volume, the volume is
- * treated as damaged and most I/O operations are prohibited. Only a new update
- * operation is allowed.
- *
- * Note, in general it is possible to implement the update operation as a
- * transaction with a roll-back capability.
- */
-
-#ifdef UBI_LINUX
-#include <linux/err.h>
-#include <asm/uaccess.h>
-#include <asm/div64.h>
-#endif
-
-#include <ubi_uboot.h>
-#include "ubi.h"
-
-/**
- * set_update_marker - set update marker.
- * @ubi: UBI device description object
- * @vol: volume description object
- *
- * This function sets the update marker flag for volume @vol. Returns zero
- * in case of success and a negative error code in case of failure.
- */
-static int set_update_marker(struct ubi_device *ubi, struct ubi_volume *vol)
-{
-	int err;
-	struct ubi_vtbl_record vtbl_rec;
-
-	dbg_msg("set update marker for volume %d", vol->vol_id);
-
-	if (vol->upd_marker) {
-		ubi_assert(ubi->vtbl[vol->vol_id].upd_marker);
-		dbg_msg("already set");
-		return 0;
-	}
-
-	memcpy(&vtbl_rec, &ubi->vtbl[vol->vol_id],
-	       sizeof(struct ubi_vtbl_record));
-	vtbl_rec.upd_marker = 1;
-
-	mutex_lock(&ubi->volumes_mutex);
-	err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
-	mutex_unlock(&ubi->volumes_mutex);
-	vol->upd_marker = 1;
-	return err;
-}
-
-/**
- * clear_update_marker - clear update marker.
- * @ubi: UBI device description object
- * @vol: volume description object
- * @bytes: new data size in bytes
- *
- * This function clears the update marker for volume @vol, sets new volume
- * data size and clears the "corrupted" flag (static volumes only). Returns
- * zero in case of success and a negative error code in case of failure.
- */
-static int clear_update_marker(struct ubi_device *ubi, struct ubi_volume *vol,
-			       long long bytes)
-{
-	int err;
-	uint64_t tmp;
-	struct ubi_vtbl_record vtbl_rec;
-
-	dbg_msg("clear update marker for volume %d", vol->vol_id);
-
-	memcpy(&vtbl_rec, &ubi->vtbl[vol->vol_id],
-	       sizeof(struct ubi_vtbl_record));
-	ubi_assert(vol->upd_marker && vtbl_rec.upd_marker);
-	vtbl_rec.upd_marker = 0;
-
-	if (vol->vol_type == UBI_STATIC_VOLUME) {
-		vol->corrupted = 0;
-		vol->used_bytes = tmp = bytes;
-		vol->last_eb_bytes = do_div(tmp, vol->usable_leb_size);
-		vol->used_ebs = tmp;
-		if (vol->last_eb_bytes)
-			vol->used_ebs += 1;
-		else
-			vol->last_eb_bytes = vol->usable_leb_size;
-	}
-
-	mutex_lock(&ubi->volumes_mutex);
-	err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
-	mutex_unlock(&ubi->volumes_mutex);
-	vol->upd_marker = 0;
-	return err;
-}
-
-/**
- * ubi_start_update - start volume update.
- * @ubi: UBI device description object
- * @vol: volume description object
- * @bytes: update bytes
- *
- * This function starts volume update operation. If @bytes is zero, the volume
- * is just wiped out. Returns zero in case of success and a negative error code
- * in case of failure.
- */
-int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
-		     long long bytes)
-{
-	int i, err;
-	uint64_t tmp;
-
-	dbg_msg("start update of volume %d, %llu bytes", vol->vol_id, bytes);
-	ubi_assert(!vol->updating && !vol->changing_leb);
-	vol->updating = 1;
-
-	err = set_update_marker(ubi, vol);
-	if (err)
-		return err;
-
-	/* Before updating - wipe out the volume */
-	for (i = 0; i < vol->reserved_pebs; i++) {
-		err = ubi_eba_unmap_leb(ubi, vol, i);
-		if (err)
-			return err;
-	}
-
-	if (bytes == 0) {
-		err = clear_update_marker(ubi, vol, 0);
-		if (err)
-			return err;
-		err = ubi_wl_flush(ubi);
-		if (!err)
-			vol->updating = 0;
-	}
-
-	vol->upd_buf = vmalloc(ubi->leb_size);
-	if (!vol->upd_buf)
-		return -ENOMEM;
-
-	tmp = bytes;
-	vol->upd_ebs = !!do_div(tmp, vol->usable_leb_size);
-	vol->upd_ebs += tmp;
-	vol->upd_bytes = bytes;
-	vol->upd_received = 0;
-	return 0;
-}
-
-/**
- * ubi_start_leb_change - start atomic LEB change.
- * @ubi: UBI device description object
- * @vol: volume description object
- * @req: operation request
- *
- * This function starts atomic LEB change operation. Returns zero in case of
- * success and a negative error code in case of failure.
- */
-int ubi_start_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
-			 const struct ubi_leb_change_req *req)
-{
-	ubi_assert(!vol->updating && !vol->changing_leb);
-
-	dbg_msg("start changing LEB %d:%d, %u bytes",
-		vol->vol_id, req->lnum, req->bytes);
-	if (req->bytes == 0)
-		return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0,
-						 req->dtype);
-
-	vol->upd_bytes = req->bytes;
-	vol->upd_received = 0;
-	vol->changing_leb = 1;
-	vol->ch_lnum = req->lnum;
-	vol->ch_dtype = req->dtype;
-
-	vol->upd_buf = vmalloc(req->bytes);
-	if (!vol->upd_buf)
-		return -ENOMEM;
-
-	return 0;
-}
-
-/**
- * write_leb - write update data.
- * @ubi: UBI device description object
- * @vol: volume description object
- * @lnum: logical eraseblock number
- * @buf: data to write
- * @len: data size
- * @used_ebs: how many logical eraseblocks will this volume contain (static
- * volumes only)
- *
- * This function writes update data to corresponding logical eraseblock. In
- * case of dynamic volume, this function checks if the data contains 0xFF bytes
- * at the end. If yes, the 0xFF bytes are cut and not written. So if the whole
- * buffer contains only 0xFF bytes, the LEB is left unmapped.
- *
- * The reason why we skip the trailing 0xFF bytes in case of dynamic volume is
- * that we want to make sure that more data may be appended to the logical
- * eraseblock in future. Indeed, writing 0xFF bytes may have side effects and
- * this PEB won't be writable anymore. So if one writes the file-system image
- * to the UBI volume where 0xFFs mean free space - UBI makes sure this free
- * space is writable after the update.
- *
- * We do not do this for static volumes because they are read-only. But this
- * also cannot be done because we have to store per-LEB CRC and the correct
- * data length.
- *
- * This function returns zero in case of success and a negative error code in
- * case of failure.
- */
-static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
-		     void *buf, int len, int used_ebs)
-{
-	int err;
-
-	if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
-		int l = ALIGN(len, ubi->min_io_size);
-
-		memset(buf + len, 0xFF, l - len);
-		len = ubi_calc_data_len(ubi, buf, l);
-		if (len == 0) {
-			dbg_msg("all %d bytes contain 0xFF - skip", len);
-			return 0;
-		}
-
-		err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len, UBI_UNKNOWN);
-	} else {
-		/*
-		 * When writing static volume, and this is the last logical
-		 * eraseblock, the length (@len) does not have to be aligned to
-		 * the minimal flash I/O unit. The 'ubi_eba_write_leb_st()'
-		 * function accepts exact (unaligned) length and stores it in
-		 * the VID header. And it takes care of proper alignment by
-		 * padding the buffer. Here we just make sure the padding will
-		 * contain zeros, not random trash.
-		 */
-		memset(buf + len, 0, vol->usable_leb_size - len);
-		err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len,
-					   UBI_UNKNOWN, used_ebs);
-	}
-
-	return err;
-}
-
-/**
- * ubi_more_update_data - write more update data.
- * @vol: volume description object
- * @buf: write data (user-space memory buffer)
- * @count: how much bytes to write
- *
- * This function writes more data to the volume which is being updated. It may
- * be called arbitrary number of times until all the update data arriveis. This
- * function returns %0 in case of success, number of bytes written during the
- * last call if the whole volume update has been successfully finished, and a
- * negative error code in case of failure.
- */
-int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
-			 const void __user *buf, int count)
-{
-	uint64_t tmp;
-	int lnum, offs, err = 0, len, to_write = count;
-
-	dbg_msg("write %d of %lld bytes, %lld already passed",
-		count, vol->upd_bytes, vol->upd_received);
-
-	if (ubi->ro_mode)
-		return -EROFS;
-
-	tmp = vol->upd_received;
-	offs = do_div(tmp, vol->usable_leb_size);
-	lnum = tmp;
-
-	if (vol->upd_received + count > vol->upd_bytes)
-		to_write = count = vol->upd_bytes - vol->upd_received;
-
-	/*
-	 * When updating volumes, we accumulate whole logical eraseblock of
-	 * data and write it at once.
-	 */
-	if (offs != 0) {
-		/*
-		 * This is a write to the middle of the logical eraseblock. We
-		 * copy the data to our update buffer and wait for more data or
-		 * flush it if the whole eraseblock is written or the update
-		 * is finished.
-		 */
-
-		len = vol->usable_leb_size - offs;
-		if (len > count)
-			len = count;
-
-		err = copy_from_user(vol->upd_buf + offs, buf, len);
-		if (err)
-			return -EFAULT;
-
-		if (offs + len == vol->usable_leb_size ||
-		    vol->upd_received + len == vol->upd_bytes) {
-			int flush_len = offs + len;
-
-			/*
-			 * OK, we gathered either the whole eraseblock or this
-			 * is the last chunk, it's time to flush the buffer.
-			 */
-			ubi_assert(flush_len <= vol->usable_leb_size);
-			err = write_leb(ubi, vol, lnum, vol->upd_buf, flush_len,
-					vol->upd_ebs);
-			if (err)
-				return err;
-		}
-
-		vol->upd_received += len;
-		count -= len;
-		buf += len;
-		lnum += 1;
-	}
-
-	/*
-	 * If we've got more to write, let's continue. At this point we know we
-	 * are starting from the beginning of an eraseblock.
-	 */
-	while (count) {
-		if (count > vol->usable_leb_size)
-			len = vol->usable_leb_size;
-		else
-			len = count;
-
-		err = copy_from_user(vol->upd_buf, buf, len);
-		if (err)
-			return -EFAULT;
-
-		if (len == vol->usable_leb_size ||
-		    vol->upd_received + len == vol->upd_bytes) {
-			err = write_leb(ubi, vol, lnum, vol->upd_buf,
-					len, vol->upd_ebs);
-			if (err)
-				break;
-		}
-
-		vol->upd_received += len;
-		count -= len;
-		lnum += 1;
-		buf += len;
-	}
-
-	ubi_assert(vol->upd_received <= vol->upd_bytes);
-	if (vol->upd_received == vol->upd_bytes) {
-		/* The update is finished, clear the update marker */
-		err = clear_update_marker(ubi, vol, vol->upd_bytes);
-		if (err)
-			return err;
-		err = ubi_wl_flush(ubi);
-		if (err == 0) {
-			vol->updating = 0;
-			err = to_write;
-			vfree(vol->upd_buf);
-		}
-	}
-
-	return err;
-}
-
-/**
- * ubi_more_leb_change_data - accept more data for atomic LEB change.
- * @vol: volume description object
- * @buf: write data (user-space memory buffer)
- * @count: how much bytes to write
- *
- * This function accepts more data to the volume which is being under the
- * "atomic LEB change" operation. It may be called arbitrary number of times
- * until all data arrives. This function returns %0 in case of success, number
- * of bytes written during the last call if the whole "atomic LEB change"
- * operation has been successfully finished, and a negative error code in case
- * of failure.
- */
-int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol,
-			     const void __user *buf, int count)
-{
-	int err;
-
-	dbg_msg("write %d of %lld bytes, %lld already passed",
-		count, vol->upd_bytes, vol->upd_received);
-
-	if (ubi->ro_mode)
-		return -EROFS;
-
-	if (vol->upd_received + count > vol->upd_bytes)
-		count = vol->upd_bytes - vol->upd_received;
-
-	err = copy_from_user(vol->upd_buf + vol->upd_received, buf, count);
-	if (err)
-		return -EFAULT;
-
-	vol->upd_received += count;
-
-	if (vol->upd_received == vol->upd_bytes) {
-		int len = ALIGN((int)vol->upd_bytes, ubi->min_io_size);
-
-		memset(vol->upd_buf + vol->upd_bytes, 0xFF, len - vol->upd_bytes);
-		len = ubi_calc_data_len(ubi, vol->upd_buf, len);
-		err = ubi_eba_atomic_leb_change(ubi, vol, vol->ch_lnum,
-						vol->upd_buf, len, UBI_UNKNOWN);
-		if (err)
-			return err;
-	}
-
-	ubi_assert(vol->upd_received <= vol->upd_bytes);
-	if (vol->upd_received == vol->upd_bytes) {
-		vol->changing_leb = 0;
-		err = count;
-		vfree(vol->upd_buf);
-	}
-
-	return err;
-}