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-rw-r--r--mtdutils/Android.mk5
-rw-r--r--mtdutils/bml_over_mtd.c12
-rw-r--r--mtdutils/mtdutils.c22
-rw-r--r--mtdutils/rk30hack.c60
-rw-r--r--mtdutils/rk30hack.h37
5 files changed, 136 insertions, 0 deletions
diff --git a/mtdutils/Android.mk b/mtdutils/Android.mk
index 12322b457..0c238e1d2 100644
--- a/mtdutils/Android.mk
+++ b/mtdutils/Android.mk
@@ -7,9 +7,14 @@ 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
LOCAL_FORCE_STATIC_EXECUTABLE := true
+
include $(BUILD_STATIC_LIBRARY)
endif # !TARGET_SIMULATOR
diff --git a/mtdutils/bml_over_mtd.c b/mtdutils/bml_over_mtd.c
index c40179281..a68950e40 100644
--- a/mtdutils/bml_over_mtd.c
+++ b/mtdutils/bml_over_mtd.c
@@ -31,6 +31,10 @@
#include "mtdutils.h"
+#ifdef RK3066
+ #include "rk30hack.h"
+#endif
+
typedef struct BmlOverMtdReadContext {
const MtdPartition *partition;
char *buffer;
@@ -518,11 +522,19 @@ static ssize_t bml_over_mtd_write_block(int fd, ssize_t erase_size, 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",
diff --git a/mtdutils/mtdutils.c b/mtdutils/mtdutils.c
index a76b8e992..032b04bac 100644
--- a/mtdutils/mtdutils.c
+++ b/mtdutils/mtdutils.c
@@ -28,6 +28,10 @@
#include "mtdutils.h"
+#ifdef RK3066
+ #include "rk30hack.h"
+#endif
+
struct MtdReadContext {
const MtdPartition *partition;
char *buffer;
@@ -423,11 +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",
@@ -457,7 +469,11 @@ static int write_block(MtdWriteContext *ctx, const char *data)
// 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;
}
@@ -527,9 +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;
}
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__
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