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-rw-r--r--mtdutils/Android.mk47
-rw-r--r--mtdutils/bml_over_mtd.c810
-rw-r--r--mtdutils/mounts.h8
-rw-r--r--mtdutils/mtdutils.c243
-rw-r--r--mtdutils/mtdutils.h13
-rw-r--r--mtdutils/rk30hack.c60
-rw-r--r--mtdutils/rk30hack.h37
7 files changed, 1189 insertions, 29 deletions
diff --git a/mtdutils/Android.mk b/mtdutils/Android.mk
index f04355b5e..c1b0e5baa 100644
--- a/mtdutils/Android.mk
+++ b/mtdutils/Android.mk
@@ -1,18 +1,59 @@
+ifneq ($(TARGET_SIMULATOR),true)
+
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
mtdutils.c \
- mounts.c
+ mounts.c
+
+ifeq ($(TARGET_BOARD_PLATFORM),rk30xx)
+LOCAL_SRC_FILES += rk30hack.c
+endif
LOCAL_MODULE := libmtdutils
+LOCAL_STATIC_LIBRARIES := libcutils libc
+LOCAL_FORCE_STATIC_EXECUTABLE := true
include $(BUILD_STATIC_LIBRARY)
include $(CLEAR_VARS)
-LOCAL_SRC_FILES := flash_image.c
-LOCAL_MODULE := flash_image
+
+LOCAL_SRC_FILES := \
+ mtdutils.c \
+ mounts.c
+
+ifeq ($(TARGET_BOARD_PLATFORM),rk30xx)
+LOCAL_SRC_FILES += rk30hack.c
+endif
+
+LOCAL_MODULE := libmtdutils
+LOCAL_STATIC_LIBRARIES := libcutils libc
+
+include $(BUILD_SHARED_LIBRARY)
+
+ifeq ($(BOARD_USES_BML_OVER_MTD),true)
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := bml_over_mtd.c
+LOCAL_C_INCLUDES += bootable/recovery/mtdutils
+LOCAL_MODULE := libbml_over_mtd
+LOCAL_MODULE_TAGS := eng
+LOCAL_CFLAGS += -Dmain=bml_over_mtd_main
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := bml_over_mtd.c
+LOCAL_MODULE := bml_over_mtd
LOCAL_MODULE_TAGS := eng
+LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
+LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities
+LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
+LOCAL_MODULE_STEM := bml_over_mtd
+LOCAL_C_INCLUDES += bootable/recovery/mtdutils
LOCAL_STATIC_LIBRARIES := libmtdutils
LOCAL_SHARED_LIBRARIES := libcutils liblog libc
include $(BUILD_EXECUTABLE)
+endif
+
+endif # !TARGET_SIMULATOR
+
diff --git a/mtdutils/bml_over_mtd.c b/mtdutils/bml_over_mtd.c
new file mode 100644
index 000000000..a68950e40
--- /dev/null
+++ b/mtdutils/bml_over_mtd.c
@@ -0,0 +1,810 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <limits.h>
+
+#include "cutils/log.h"
+
+#include <mtd/mtd-user.h>
+
+#include "mtdutils.h"
+
+#ifdef RK3066
+ #include "rk30hack.h"
+#endif
+
+typedef struct BmlOverMtdReadContext {
+ const MtdPartition *partition;
+ char *buffer;
+ size_t consumed;
+ int fd;
+} BmlOverMtdReadContext;
+
+typedef struct BmlOverMtdWriteContext {
+ const MtdPartition *partition;
+ char *buffer;
+ size_t stored;
+ int fd;
+
+ off_t* bad_block_offsets;
+ int bad_block_alloc;
+ int bad_block_count;
+} BmlOverMtdWriteContext;
+
+
+static BmlOverMtdReadContext *bml_over_mtd_read_partition(const MtdPartition *partition)
+{
+ BmlOverMtdReadContext *ctx = (BmlOverMtdReadContext*) malloc(sizeof(BmlOverMtdReadContext));
+ if (ctx == NULL) return NULL;
+
+ ctx->buffer = malloc(partition->erase_size);
+ if (ctx->buffer == NULL) {
+ free(ctx);
+ return NULL;
+ }
+
+ char mtddevname[32];
+ sprintf(mtddevname, "/dev/mtd/mtd%d", partition->device_index);
+ ctx->fd = open(mtddevname, O_RDONLY);
+ if (ctx->fd < 0) {
+ free(ctx);
+ free(ctx->buffer);
+ return NULL;
+ }
+
+ ctx->partition = partition;
+ ctx->consumed = partition->erase_size;
+ return ctx;
+}
+
+static void bml_over_mtd_read_close(BmlOverMtdReadContext *ctx)
+{
+ close(ctx->fd);
+ free(ctx->buffer);
+ free(ctx);
+}
+
+static BmlOverMtdWriteContext *bml_over_mtd_write_partition(const MtdPartition *partition)
+{
+ BmlOverMtdWriteContext *ctx = (BmlOverMtdWriteContext*) malloc(sizeof(BmlOverMtdWriteContext));
+ if (ctx == NULL) return NULL;
+
+ ctx->bad_block_offsets = NULL;
+ ctx->bad_block_alloc = 0;
+ ctx->bad_block_count = 0;
+
+ ctx->buffer = malloc(partition->erase_size);
+ if (ctx->buffer == NULL) {
+ free(ctx);
+ return NULL;
+ }
+
+ char mtddevname[32];
+ sprintf(mtddevname, "/dev/mtd/mtd%d", partition->device_index);
+ ctx->fd = open(mtddevname, O_RDWR);
+ if (ctx->fd < 0) {
+ free(ctx->buffer);
+ free(ctx);
+ return NULL;
+ }
+
+ ctx->partition = partition;
+ ctx->stored = 0;
+ return ctx;
+}
+
+static int bml_over_mtd_write_close(BmlOverMtdWriteContext *ctx)
+{
+ int r = 0;
+ if (close(ctx->fd)) r = -1;
+ free(ctx->bad_block_offsets);
+ free(ctx->buffer);
+ free(ctx);
+ return r;
+}
+
+
+#ifdef LOG_TAG
+#undef LOG_TAG
+#endif
+
+#define LOG_TAG "bml_over_mtd"
+
+#define BLOCK_SIZE 2048
+#define SPARE_SIZE (BLOCK_SIZE >> 5)
+
+#define EXIT_CODE_BAD_BLOCKS 15
+
+static int die(const char *msg, ...) {
+ int err = errno;
+ va_list args;
+ va_start(args, msg);
+ char buf[1024];
+ vsnprintf(buf, sizeof(buf), msg, args);
+ va_end(args);
+
+ if (err != 0) {
+ strlcat(buf, ": ", sizeof(buf));
+ strlcat(buf, strerror(err), sizeof(buf));
+ }
+
+ fprintf(stderr, "%s\n", buf);
+ return 1;
+}
+
+static unsigned short* CreateEmptyBlockMapping(const MtdPartition* pSrcPart)
+{
+ size_t srcTotal, srcErase, srcWrite;
+ if (mtd_partition_info(pSrcPart, &srcTotal, &srcErase, &srcWrite) != 0)
+ {
+ fprintf(stderr, "Failed to access partition.\n");
+ return NULL;
+ }
+
+ int numSrcBlocks = srcTotal/srcErase;
+
+ unsigned short* pMapping = malloc(numSrcBlocks * sizeof(unsigned short));
+ if (pMapping == NULL)
+ {
+ fprintf(stderr, "Failed to allocate block mapping memory.\n");
+ return NULL;
+ }
+ memset(pMapping, 0xFF, numSrcBlocks * sizeof(unsigned short));
+ return pMapping;
+}
+
+static const unsigned short* CreateBlockMapping(const MtdPartition* pSrcPart, int srcPartStartBlock,
+ const MtdPartition *pReservoirPart, int reservoirPartStartBlock)
+{
+ size_t srcTotal, srcErase, srcWrite;
+ if (mtd_partition_info(pSrcPart, &srcTotal, &srcErase, &srcWrite) != 0)
+ {
+ fprintf(stderr, "Failed to access partition.\n");
+ return NULL;
+ }
+
+ int numSrcBlocks = srcTotal/srcErase;
+
+ unsigned short* pMapping = malloc(numSrcBlocks * sizeof(unsigned short));
+ if (pMapping == NULL)
+ {
+ fprintf(stderr, "Failed to allocate block mapping memory.\n");
+ return NULL;
+ }
+ memset(pMapping, 0xFF, numSrcBlocks * sizeof(unsigned short));
+
+ size_t total, erase, write;
+ if (mtd_partition_info(pReservoirPart, &total, &erase, &write) != 0)
+ {
+ fprintf(stderr, "Failed to access reservoir partition.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ if (erase != srcErase || write != srcWrite)
+ {
+ fprintf(stderr, "Source partition and reservoir partition differ in size properties.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ printf("Partition info: Total %d, Erase %d, write %d\n", total, erase, write);
+
+ BmlOverMtdReadContext *readctx = bml_over_mtd_read_partition(pReservoirPart);
+ if (readctx == NULL)
+ {
+ fprintf(stderr, "Failed to open reservoir partition for reading.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ if (total < erase || total > INT_MAX)
+ {
+ fprintf(stderr, "Unsuitable reservoir partition properties.\n");
+ free(pMapping);
+ bml_over_mtd_read_close(readctx);
+ return NULL;
+ }
+
+ int foundMappingTable = 0;
+
+ int currOffset = total; //Offset *behind* the last byte
+ while (currOffset > 0)
+ {
+ currOffset -= erase;
+ loff_t pos = lseek64(readctx->fd, currOffset, SEEK_SET);
+ int mgbb = ioctl(readctx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb != 0)
+ {
+ printf("Bad block %d in reservoir area, skipping.\n", currOffset/erase);
+ continue;
+ }
+ ssize_t readBytes = read(readctx->fd, readctx->buffer, erase);
+ if (readBytes != (ssize_t)erase)
+ {
+ fprintf(stderr, "Failed to read good block in reservoir area (%s).\n",
+ strerror(errno));
+ free(pMapping);
+ bml_over_mtd_read_close(readctx);
+ return NULL;
+ }
+ if (readBytes >= 0x2000)
+ {
+ char* buf = readctx->buffer;
+ if (buf[0]=='U' && buf[1]=='P' && buf[2]=='C' && buf[3]=='H')
+ {
+ printf ("Found mapping block mark at 0x%x (block %d).\n", currOffset, currOffset/erase);
+
+ unsigned short* mappings = (unsigned short*) &buf[0x1000];
+ if (mappings[0]==0 && mappings[1]==0xffff)
+ {
+ printf("Found start of mapping table.\n");
+ foundMappingTable = 1;
+ //Skip first entry (dummy)
+ unsigned short* mappingEntry = mappings + 2;
+ while (mappingEntry - mappings < 100
+ && mappingEntry[0] != 0xffff)
+ {
+ unsigned short rawSrcBlk = mappingEntry[0];
+ unsigned short rawDstBlk = mappingEntry[1];
+
+ printf("Found raw block mapping %d -> %d\n", rawSrcBlk,
+ rawDstBlk);
+
+ unsigned int srcAbsoluteStartAddress = srcPartStartBlock * erase;
+ unsigned int resAbsoluteStartAddress = reservoirPartStartBlock * erase;
+
+ int reservoirLastBlock = reservoirPartStartBlock + numSrcBlocks - 1;
+ if (rawDstBlk < reservoirPartStartBlock
+ || rawDstBlk*erase >= resAbsoluteStartAddress+currOffset)
+ {
+ fprintf(stderr, "Mapped block not within reasonable reservoir area.\n");
+ foundMappingTable = 0;
+ break;
+ }
+
+ int srcLastBlock = srcPartStartBlock + numSrcBlocks - 1;
+ if (rawSrcBlk >= srcPartStartBlock && rawSrcBlk <= srcLastBlock)
+ {
+
+ unsigned short relSrcBlk = rawSrcBlk - srcPartStartBlock;
+ unsigned short relDstBlk = rawDstBlk - reservoirPartStartBlock;
+ printf("Partition relative block mapping %d -> %d\n",relSrcBlk, relDstBlk);
+
+ printf("Absolute mapped start addresses 0x%x -> 0x%x\n",
+ srcAbsoluteStartAddress+relSrcBlk*erase,
+ resAbsoluteStartAddress+relDstBlk*erase);
+ printf("Partition relative mapped start addresses 0x%x -> 0x%x\n",
+ relSrcBlk*erase, relDstBlk*erase);
+
+ //Set mapping entry. For duplicate entries, later entries replace former ones.
+ //*Assumption*: Bad blocks in reservoir area will not be mapped themselves in
+ //the mapping table. User partition blocks will not be mapped to bad blocks
+ //(only) in the reservoir area. This has to be confirmed on a wider range of
+ //devices.
+ pMapping[relSrcBlk] = relDstBlk;
+
+ }
+ mappingEntry+=2;
+ }
+ break; //We found the mapping table, no need to search further
+ }
+
+
+ }
+ }
+
+ }
+ bml_over_mtd_read_close(readctx);
+
+ if (foundMappingTable == 0)
+ {
+ fprintf(stderr, "Cannot find mapping table in reservoir partition.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ //Consistency and validity check
+ int mappingValid = 1;
+ readctx = bml_over_mtd_read_partition(pSrcPart);
+ if (readctx == NULL)
+ {
+ fprintf(stderr, "Cannot open source partition for reading.\n");
+ free(pMapping);
+ return NULL;
+ }
+ int currBlock = 0;
+ for (;currBlock < numSrcBlocks; ++currBlock)
+ {
+ loff_t pos = lseek64(readctx->fd, currBlock*erase, SEEK_SET);
+ int mgbb = ioctl(readctx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb == 0)
+ {
+ if (pMapping[currBlock]!=0xffff)
+ {
+ fprintf(stderr, "Consistency error: Good block has mapping entry %d -> %d\n", currBlock, pMapping[currBlock]);
+ mappingValid = 0;
+ }
+ } else
+ {
+ //Bad block!
+ if (pMapping[currBlock]==0xffff)
+ {
+ fprintf(stderr, "Consistency error: Bad block has no mapping entry \n");
+ mappingValid = 0;
+ } else
+ {
+ BmlOverMtdReadContext* reservoirReadCtx = bml_over_mtd_read_partition(pReservoirPart);
+ if (reservoirReadCtx == 0)
+ {
+ fprintf(stderr, "Reservoir partition cannot be opened for reading in consistency check.\n");
+ mappingValid = 0;
+ } else
+ {
+ pos = lseek64(reservoirReadCtx->fd, pMapping[currBlock]*erase, SEEK_SET);
+ mgbb = ioctl(reservoirReadCtx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb == 0)
+ {
+ printf("Bad block has properly mapped reservoir block %d -> %d\n",currBlock, pMapping[currBlock]);
+ }
+ else
+ {
+ fprintf(stderr, "Consistency error: Mapped block is bad, too. (%d -> %d)\n",currBlock, pMapping[currBlock]);
+ mappingValid = 0;
+ }
+
+ }
+ bml_over_mtd_read_close(reservoirReadCtx);
+ }
+
+ }
+
+ }
+ bml_over_mtd_read_close(readctx);
+
+
+ if (!mappingValid)
+ {
+ free(pMapping);
+ return NULL;
+ }
+
+ return pMapping;
+}
+
+static void ReleaseBlockMapping(const unsigned short* blockMapping)
+{
+ free((void*)blockMapping);
+}
+
+static int dump_bml_partition(const MtdPartition* pSrcPart, const MtdPartition* pReservoirPart,
+ const unsigned short* blockMapping, const char* filename)
+{
+ int fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+ BmlOverMtdReadContext* pSrcRead = bml_over_mtd_read_partition(pSrcPart);
+ if (pSrcRead == NULL)
+ {
+ close(fd);
+ fprintf(stderr, "dump_bml_partition: Error opening src part for reading.\n");
+ return -1;
+ }
+
+ BmlOverMtdReadContext* pResRead = bml_over_mtd_read_partition(pReservoirPart);
+ if (pResRead == NULL)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ fprintf(stderr, "dump_bml_partition: Error opening reservoir part for reading.\n");
+ return -1;
+ }
+
+
+ int numBlocks = pSrcPart->size / pSrcPart->erase_size;
+ int currblock = 0;
+ for (;currblock < numBlocks; ++currblock)
+ {
+ int srcFd = -1;
+ if (blockMapping[currblock] == 0xffff)
+ {
+ //Good block, use src partition
+ srcFd = pSrcRead->fd;
+ if (lseek64(pSrcRead->fd, currblock*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: lseek in src partition failed\n");
+ return -1;
+ }
+ } else
+ {
+ //Bad block, use mapped block in reservoir partition
+ srcFd = pResRead->fd;
+ if (lseek64(pResRead->fd, blockMapping[currblock]*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: lseek in reservoir partition failed\n");
+ return -1;
+ }
+ }
+ size_t blockBytesRead = 0;
+ while (blockBytesRead < pSrcPart->erase_size)
+ {
+ ssize_t len = read(srcFd, pSrcRead->buffer + blockBytesRead,
+ pSrcPart->erase_size - blockBytesRead);
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: reading partition failed\n");
+ return -1;
+ }
+ blockBytesRead += len;
+ }
+
+ size_t blockBytesWritten = 0;
+ while (blockBytesWritten < pSrcPart->erase_size)
+ {
+ ssize_t len = write(fd, pSrcRead->buffer + blockBytesWritten,
+ pSrcPart->erase_size - blockBytesWritten);
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: writing partition dump file failed\n");
+ return -1;
+ }
+ blockBytesWritten += len;
+ }
+
+ }
+
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+
+ if (close(fd)) {
+ unlink(filename);
+ printf("error closing %s", filename);
+ return -1;
+ }
+
+ return 0;
+}
+
+static ssize_t bml_over_mtd_write_block(int fd, ssize_t erase_size, char* data)
+{
+ off_t pos = lseek(fd, 0, SEEK_CUR);
+ if (pos == (off_t) -1) return -1;
+
+ ssize_t size = erase_size;
+ loff_t bpos = pos;
+ int ret = ioctl(fd, MEMGETBADBLOCK, &bpos);
+ if (ret != 0 && !(ret == -1 && errno == EOPNOTSUPP)) {
+ fprintf(stderr,
+ "Mapping failure: Trying to write bad block at 0x%08lx (ret %d errno %d)\n",
+ pos, ret, errno);
+ return -1;
+ }
+
+ struct erase_info_user erase_info;
+ erase_info.start = pos;
+ erase_info.length = size;
+ int retry;
+ for (retry = 0; retry < 2; ++retry) {
+#ifdef RK3066
+ if (rk30_zero_out(fd, pos, size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#else
+ if (ioctl(fd, MEMERASE, &erase_info) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#endif
+ if (lseek(fd, pos, SEEK_SET) != pos ||
+ write(fd, data, size) != size) {
+ fprintf(stderr, "mtd: write error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ }
+
+ char verify[size];
+ if (lseek(fd, pos, SEEK_SET) != pos ||
+ read(fd, verify, size) != size) {
+ fprintf(stderr, "mtd: re-read error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+ if (memcmp(data, verify, size) != 0) {
+ fprintf(stderr, "mtd: verification error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+
+ if (retry > 0) {
+ fprintf(stderr, "mtd: wrote block after %d retries\n", retry);
+ }
+ fprintf(stderr, "mtd: successfully wrote block at %llx\n", pos);
+ return size; // Success!
+ }
+
+
+ fprintf(stderr, "mtd: Block at %llx could not be properly written.\n", pos);
+ // Ran out of space on the device
+ errno = ENOSPC;
+ return -1;
+}
+
+static int flash_bml_partition(const MtdPartition* pSrcPart, const MtdPartition* pReservoirPart,
+ const unsigned short* blockMapping, const char* filename)
+{
+ int fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+ BmlOverMtdWriteContext* pSrcWrite = bml_over_mtd_write_partition(pSrcPart);
+ if (pSrcWrite == NULL)
+ {
+ close(fd);
+ fprintf(stderr, "flash_bml_partition: Error opening src part for writing.\n");
+ return -1;
+ }
+
+#ifdef DUMMY_WRITING
+ close(pSrcWrite->fd);
+ pSrcWrite->fd = open("/sdcard/srcPartWriteDummy.bin", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+#endif
+
+ BmlOverMtdWriteContext* pResWrite = bml_over_mtd_write_partition(pReservoirPart);
+ if (pResWrite == NULL)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ fprintf(stderr, "flash_bml_partition: Error opening reservoir part for writing.\n");
+ return -1;
+ }
+#ifdef DUMMY_WRITING
+ close(pResWrite->fd);
+ pResWrite->fd = open("/sdcard/resPartWriteDummy.bin", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+#endif
+
+ struct stat fileStat;
+ if (fstat(fd, &fileStat) != 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: Failed to stat source file.\n");
+ return -1;
+
+ }
+ if (fileStat.st_size > pSrcPart->size)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: Source file too large for target partition.\n");
+ return -1;
+ }
+
+ int numBlocks = (fileStat.st_size + pSrcPart->erase_size - 1) / pSrcPart->erase_size;
+ int currblock;
+ for (currblock = 0 ;currblock < numBlocks; ++currblock)
+ {
+ memset(pSrcWrite->buffer, 0xFF, pSrcPart->erase_size);
+ size_t blockBytesRead = 0;
+ while (blockBytesRead < pSrcPart->erase_size)
+ {
+ ssize_t len = read(fd, pSrcWrite->buffer + blockBytesRead,
+ pSrcPart->erase_size - blockBytesRead);
+ if (len < 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: read source file failed\n");
+ return -1;
+ }
+ if (len == 0)
+ {
+ //End of file
+ break;
+ }
+
+ blockBytesRead += len;
+ }
+
+
+
+ int srcFd = -1;
+ if (blockMapping[currblock] == 0xffff)
+ {
+ //Good block, use src partition
+ srcFd = pSrcWrite->fd;
+ if (lseek64(pSrcWrite->fd, currblock*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: lseek in src partition failed\n");
+ return -1;
+ }
+ } else
+ {
+ //Bad block, use mapped block in reservoir partition
+ srcFd = pResWrite->fd;
+ if (lseek64(pResWrite->fd, blockMapping[currblock]*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: lseek in reservoir partition failed\n");
+ return -1;
+ }
+ }
+ size_t blockBytesWritten = 0;
+ while (blockBytesWritten < pSrcPart->erase_size)
+ {
+#ifdef DUMMY_WRITING
+ ssize_t len = write(srcFd, pSrcWrite->buffer + blockBytesWritten,
+ pSrcPart->erase_size - blockBytesWritten);
+#else
+ ssize_t len = bml_over_mtd_write_block(srcFd, pSrcPart->erase_size, pSrcWrite->buffer);
+#endif
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: writing to partition failed\n");
+ return -1;
+ }
+ blockBytesWritten += len;
+ }
+
+
+ }
+
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+
+ if (close(fd)) {
+ printf("error closing %s", filename);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int scan_partition(const MtdPartition* pPart)
+{
+ BmlOverMtdReadContext* readCtx = bml_over_mtd_read_partition(pPart);
+ if (readCtx == NULL)
+ {
+ fprintf(stderr, "Failed to open partition for reading.\n");
+ return -1;
+ }
+
+ int numBadBlocks = 0;
+ size_t numBlocks = pPart->size / pPart->erase_size;
+ size_t currBlock;
+ for (currBlock = 0; currBlock < numBlocks; ++currBlock)
+ {
+
+ loff_t pos = currBlock * pPart->erase_size;
+ int mgbb = ioctl(readCtx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb != 0)
+ {
+ printf("Bad block %d at 0x%x.\n", currBlock, (unsigned int)pos);
+ numBadBlocks++;
+ }
+ }
+
+ bml_over_mtd_read_close(readCtx);
+ if (numBadBlocks == 0)
+ {
+ printf("No bad blocks.\n");
+ return 0;
+ }
+ return -1 ;
+}
+
+int main(int argc, char **argv)
+{
+ if (argc != 7 && (argc != 3 || (argc == 3 && strcmp(argv[1],"scan"))!=0)
+ && (argc != 6 || (argc == 6 && strcmp(argv[1],"scan"))!=0))
+ return die("Usage: %s dump|flash <partition> <partition_start_block> <reservoirpartition> <reservoir_start_block> <file>\n"
+ "E.g. %s dump boot 72 reservoir 2004 file.bin\n"
+ "Usage: %s scan <partition> [<partition_start_block> <reservoirpartition> <reservoir_start_block>]\n"
+ ,argv[0], argv[0], argv[0]);
+ int num_partitions = mtd_scan_partitions();
+ const MtdPartition *pSrcPart = mtd_find_partition_by_name(argv[2]);
+ if (pSrcPart == NULL)
+ return die("Cannot find partition %s", argv[2]);
+
+ int scanResult = scan_partition(pSrcPart);
+
+ if (argc == 3 && strcmp(argv[1],"scan")==0)
+ {
+ return (scanResult == 0 ? 0 : EXIT_CODE_BAD_BLOCKS);
+ }
+
+ int retVal = 0;
+ const MtdPartition* pReservoirPart = mtd_find_partition_by_name(argv[4]);
+ if (pReservoirPart == NULL)
+ return die("Cannot find partition %s", argv[4]);
+
+ int srcPartStartBlock = atoi(argv[3]);
+ int reservoirPartStartBlock = atoi(argv[5]);
+ const unsigned short* pMapping = CreateBlockMapping(pSrcPart, srcPartStartBlock,
+ pReservoirPart, reservoirPartStartBlock);
+
+ if (pMapping == NULL && scanResult == 0)
+ {
+ printf("Generating empty block mapping table for error-free partition.\n");
+ pMapping = CreateEmptyBlockMapping(pSrcPart);
+ }
+
+ if (argc == 6 && strcmp(argv[1],"scan")==0)
+ {
+ retVal = (scanResult == 0 ? 0 : EXIT_CODE_BAD_BLOCKS);
+ }
+
+ if (pMapping == NULL)
+ return die("Failed to create block mapping table");
+
+ if (strcmp(argv[1],"dump")==0)
+ {
+ retVal = dump_bml_partition(pSrcPart, pReservoirPart, pMapping, argv[6]);
+ if (retVal == 0)
+ printf("Successfully dumped partition to %s\n", argv[6]);
+ }
+
+ if (strcmp(argv[1],"flash")==0)
+ {
+ retVal = flash_bml_partition(pSrcPart, pReservoirPart, pMapping, argv[6]);
+ if (retVal == 0)
+ printf("Successfully wrote %s to partition\n", argv[6]);
+
+ }
+
+
+ ReleaseBlockMapping(pMapping);
+ return retVal;
+}
+
diff --git a/mtdutils/mounts.h b/mtdutils/mounts.h
index d721355b8..30b2927c2 100644
--- a/mtdutils/mounts.h
+++ b/mtdutils/mounts.h
@@ -17,10 +17,6 @@
#ifndef MTDUTILS_MOUNTS_H_
#define MTDUTILS_MOUNTS_H_
-#ifdef __cplusplus
-extern "C" {
-#endif
-
typedef struct MountedVolume MountedVolume;
int scan_mounted_volumes(void);
@@ -34,8 +30,4 @@ int unmount_mounted_volume(const MountedVolume *volume);
int remount_read_only(const MountedVolume* volume);
-#ifdef __cplusplus
-}
-#endif
-
#endif // MTDUTILS_MOUNTS_H_
diff --git a/mtdutils/mtdutils.c b/mtdutils/mtdutils.c
index 107cbb9a8..032b04bac 100644
--- a/mtdutils/mtdutils.c
+++ b/mtdutils/mtdutils.c
@@ -28,12 +28,9 @@
#include "mtdutils.h"
-struct MtdPartition {
- int device_index;
- unsigned int size;
- unsigned int erase_size;
- char *name;
-};
+#ifdef RK3066
+ #include "rk30hack.h"
+#endif
struct MtdReadContext {
const MtdPartition *partition;
@@ -328,8 +325,8 @@ static int read_block(const MtdPartition *partition, int fd, char *data)
ssize_t mtd_read_data(MtdReadContext *ctx, char *data, size_t len)
{
- size_t read = 0;
- while (read < len) {
+ ssize_t read = 0;
+ while (read < (int) len) {
if (ctx->consumed < ctx->partition->erase_size) {
size_t avail = ctx->partition->erase_size - ctx->consumed;
size_t copy = len - read < avail ? len - read : avail;
@@ -345,12 +342,12 @@ ssize_t mtd_read_data(MtdReadContext *ctx, char *data, size_t len)
read += ctx->partition->erase_size;
}
- if (read >= len) {
+ if (read >= (int)len) {
return read;
}
// Read the next block into the buffer
- if (ctx->consumed == ctx->partition->erase_size && read < len) {
+ if (ctx->consumed == ctx->partition->erase_size && read < (int) len) {
if (read_block(ctx->partition, ctx->fd, ctx->buffer)) return -1;
ctx->consumed = 0;
}
@@ -430,11 +427,19 @@ static int write_block(MtdWriteContext *ctx, const char *data)
erase_info.length = size;
int retry;
for (retry = 0; retry < 2; ++retry) {
+#ifdef RK3066
+ if (rk30_zero_out(fd, pos, size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#else
if (ioctl(fd, MEMERASE, &erase_info) < 0) {
fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
pos, strerror(errno));
continue;
}
+#endif
if (lseek(fd, pos, SEEK_SET) != pos ||
write(fd, data, size) != size) {
fprintf(stderr, "mtd: write error at 0x%08lx (%s)\n",
@@ -457,14 +462,18 @@ static int write_block(MtdWriteContext *ctx, const char *data)
if (retry > 0) {
fprintf(stderr, "mtd: wrote block after %d retries\n", retry);
}
- fprintf(stderr, "mtd: successfully wrote block at %lx\n", pos);
+ fprintf(stderr, "mtd: successfully wrote block at %llx\n", pos);
return 0; // Success!
}
// Try to erase it once more as we give up on this block
add_bad_block_offset(ctx, pos);
fprintf(stderr, "mtd: skipping write block at 0x%08lx\n", pos);
+#ifdef RK3066
+ rk30_zero_out(fd, pos, size);
+#else
ioctl(fd, MEMERASE, &erase_info);
+#endif
pos += partition->erase_size;
}
@@ -534,9 +543,15 @@ off_t mtd_erase_blocks(MtdWriteContext *ctx, int blocks)
struct erase_info_user erase_info;
erase_info.start = pos;
erase_info.length = ctx->partition->erase_size;
+#ifdef RK3066
+ if (rk30_zero_out(ctx->fd, pos, ctx->partition->erase_size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx\n", pos);
+ }
+#else
if (ioctl(ctx->fd, MEMERASE, &erase_info) < 0) {
fprintf(stderr, "mtd: erase failure at 0x%08lx\n", pos);
}
+#endif
pos += ctx->partition->erase_size;
}
@@ -569,3 +584,209 @@ off_t mtd_find_write_start(MtdWriteContext *ctx, off_t pos) {
}
return pos;
}
+
+#define BLOCK_SIZE 2048
+#define SPARE_SIZE (BLOCK_SIZE >> 5)
+#define HEADER_SIZE 2048
+
+int cmd_mtd_restore_raw_partition(const char *partition_name, const char *filename)
+{
+ const MtdPartition *ptn;
+ MtdWriteContext *write;
+ void *data;
+
+ FILE* f = fopen(filename, "rb");
+ if (f == NULL) {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ fprintf(stderr, "error scanning partitions");
+ return -1;
+ }
+ const MtdPartition *mtd = mtd_find_partition_by_name(partition_name);
+ if (mtd == NULL)
+ {
+ fprintf(stderr, "can't find %s partition", partition_name);
+ return -1;
+ }
+
+ int fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ {
+ printf("error opening %s", filename);
+ return -1;
+ }
+
+ MtdWriteContext* ctx = mtd_write_partition(mtd);
+ if (ctx == NULL) {
+ printf("error writing %s", partition_name);
+ return -1;
+ }
+
+ int success = 1;
+ char* buffer = malloc(BUFSIZ);
+ int read;
+ while (success && (read = fread(buffer, 1, BUFSIZ, f)) > 0) {
+ int wrote = mtd_write_data(ctx, buffer, read);
+ success = success && (wrote == read);
+ }
+ free(buffer);
+ fclose(f);
+
+ if (!success) {
+ fprintf(stderr, "error writing %s", partition_name);
+ return -1;
+ }
+
+ if (mtd_erase_blocks(ctx, -1) == -1) {
+ fprintf(stderr, "error erasing blocks of %s\n", partition_name);
+ }
+ if (mtd_write_close(ctx) != 0) {
+ fprintf(stderr, "error closing write of %s\n", partition_name);
+ }
+ printf("%s %s partition\n", success ? "wrote" : "failed to write", partition_name);
+ return 0;
+}
+
+
+int cmd_mtd_backup_raw_partition(const char *partition_name, const char *filename)
+{
+ MtdReadContext *in;
+ const MtdPartition *partition;
+ char buf[BLOCK_SIZE + SPARE_SIZE];
+ size_t partition_size;
+ size_t read_size;
+ size_t total;
+ int fd;
+ int wrote;
+ int len;
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ printf("error scanning partitions");
+ return -1;
+ }
+
+ partition = mtd_find_partition_by_name(partition_name);
+ if (partition == NULL)
+ {
+ printf("can't find %s partition", partition_name);
+ return -1;
+ }
+
+ if (mtd_partition_info(partition, &partition_size, NULL, NULL)) {
+ printf("can't get info of partition %s", partition_name);
+ return -1;
+ }
+
+ if (!strcmp(filename, "-")) {
+ fd = fileno(stdout);
+ }
+ else {
+ fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ }
+
+ if (fd < 0)
+ {
+ printf("error opening %s", filename);
+ return -1;
+ }
+
+ in = mtd_read_partition(partition);
+ if (in == NULL) {
+ close(fd);
+ unlink(filename);
+ printf("error opening %s: %s\n", partition_name, strerror(errno));
+ return -1;
+ }
+
+ total = 0;
+ while ((len = mtd_read_data(in, buf, BLOCK_SIZE)) > 0) {
+ wrote = write(fd, buf, len);
+ if (wrote != len) {
+ close(fd);
+ unlink(filename);
+ printf("error writing %s", filename);
+ return -1;
+ }
+ total += BLOCK_SIZE;
+ }
+
+ mtd_read_close(in);
+
+ if (close(fd)) {
+ unlink(filename);
+ printf("error closing %s", filename);
+ return -1;
+ }
+ return 0;
+}
+
+int cmd_mtd_erase_raw_partition(const char *partition_name)
+{
+ MtdWriteContext *out;
+ size_t erased;
+ size_t total_size;
+ size_t erase_size;
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ printf("error scanning partitions");
+ return -1;
+ }
+ const MtdPartition *p = mtd_find_partition_by_name(partition_name);
+ if (p == NULL)
+ {
+ printf("can't find %s partition", partition_name);
+ return -1;
+ }
+
+ out = mtd_write_partition(p);
+ if (out == NULL)
+ {
+ printf("could not estabilish write context for %s", partition_name);
+ return -1;
+ }
+
+ // do the actual erase, -1 = full partition erase
+ erased = mtd_erase_blocks(out, -1);
+
+ // erased = bytes erased, if zero, something borked
+ if (!erased)
+ {
+ printf("error erasing %s", partition_name);
+ return -1;
+ }
+
+ return 0;
+}
+
+int cmd_mtd_erase_partition(const char *partition, const char *filesystem)
+{
+ return cmd_mtd_erase_raw_partition(partition);
+}
+
+
+int cmd_mtd_mount_partition(const char *partition, const char *mount_point, const char *filesystem, int read_only)
+{
+ mtd_scan_partitions();
+ const MtdPartition *p;
+ p = mtd_find_partition_by_name(partition);
+ if (p == NULL) {
+ return -1;
+ }
+ return mtd_mount_partition(p, mount_point, filesystem, read_only);
+}
+
+int cmd_mtd_get_partition_device(const char *partition, char *device)
+{
+ mtd_scan_partitions();
+ MtdPartition *p = mtd_find_partition_by_name(partition);
+ if (p == NULL)
+ return -1;
+ sprintf(device, "/dev/block/mtdblock%d", p->device_index);
+ return 0;
+}
diff --git a/mtdutils/mtdutils.h b/mtdutils/mtdutils.h
index 2708c4318..c57d45d50 100644
--- a/mtdutils/mtdutils.h
+++ b/mtdutils/mtdutils.h
@@ -19,10 +19,6 @@
#include <sys/types.h> // for size_t, etc.
-#ifdef __cplusplus
-extern "C" {
-#endif
-
typedef struct MtdPartition MtdPartition;
int mtd_scan_partitions(void);
@@ -57,8 +53,11 @@ off_t mtd_erase_blocks(MtdWriteContext *, int blocks); /* 0 ok, -1 for all */
off_t mtd_find_write_start(MtdWriteContext *ctx, off_t pos);
int mtd_write_close(MtdWriteContext *);
-#ifdef __cplusplus
-}
-#endif
+struct MtdPartition {
+ int device_index;
+ unsigned int size;
+ unsigned int erase_size;
+ char *name;
+};
#endif // MTDUTILS_H_
diff --git a/mtdutils/rk30hack.c b/mtdutils/rk30hack.c
new file mode 100644
index 000000000..e9351b52e
--- /dev/null
+++ b/mtdutils/rk30hack.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2013, Sergey 'Jin' Bostandzhyan
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This is a hack for Rockchip rk30xx based devices. The problem is that
+ * the MEMERASE ioctl is failing (hangs and never returns) in their kernel.
+ * The sources are not fully available, so fixing it in the rk30xxnand_ko driver
+ * is not possible.
+ *
+ * I straced the stock recovery application and it seems to avoid this
+ * particular ioctl, instead it is simply writing zeroes using the write() call.
+ *
+ * This workaround does the same and will replace all MEMERASE occurances in
+ * the recovery code.
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "rk30hack.h"
+
+int rk30_zero_out(int fd, off_t pos, ssize_t size)
+{
+ if (lseek(fd, pos, SEEK_SET) != pos) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ return -1;
+ }
+
+ unsigned char *zb = (unsigned char *)calloc(1, size);
+ if (zb == NULL) {
+ fprintf(stderr, "mtd: erase failure, could not allocate memory\n");
+ return -1;
+ }
+
+ if (write(fd, zb, size) != size) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ free(zb);
+ return -1;
+ }
+
+ free(zb);
+ return 0;
+}
diff --git a/mtdutils/rk30hack.h b/mtdutils/rk30hack.h
new file mode 100644
index 000000000..d492793ff
--- /dev/null
+++ b/mtdutils/rk30hack.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2013 Sergey 'Jin' Bostandzhyan
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This is a hack for Rockchip rk30xx based devices. The problem is that
+ * the MEMERASE ioctl is failing (hangs and never returns) in their kernel.
+ * The sources are not fully available, so fixing it in the rk30xxnand_ko driver
+ * is not possible.
+ *
+ * I straced the stock recovery application and it seems to avoid this
+ * particular ioctl, instead it is simply writing zeroes using the write() call.
+ *
+ * This workaround does the same and will replace all MEMERASE occurances in
+ * the recovery code.
+ */
+
+#ifndef __RK30_HACK_H__
+#define __RK30_HACK_H__
+
+#include <sys/types.h> // for size_t, etc.
+
+// write zeroes to fd at position pos
+int zero_out(int fd, off_t pos, ssize_t length);
+
+#endif//__RK30_HACK_H__
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 03:56:32 +0100