summaryrefslogtreecommitdiffstats
path: root/mtdutils/rk30hack.h
diff options
context:
space:
mode:
authorSergey 'Jin' Bostandzhyan <jin@mediatomb.cc>2013-01-04 02:29:03 +0100
committerSergey 'Jin' Bostandzhyan <jin@mediatomb.cc>2013-01-05 00:23:06 +0100
commit80a90edd47d20141cfb7b18ededc9a3090fba58c (patch)
tree024a118fbcbc357158b74862e3381b265076a9b5 /mtdutils/rk30hack.h
parentIncrease array size to fix crashes on some devices (diff)
downloadandroid_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar.gz
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar.bz2
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar.lz
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar.xz
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.tar.zst
android_bootable_recovery-80a90edd47d20141cfb7b18ededc9a3090fba58c.zip
Diffstat (limited to '')
-rw-r--r--mtdutils/rk30hack.h37
1 files changed, 37 insertions, 0 deletions
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__