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author | Dees Troy <dees_troy@teamw.in> | 2013-01-07 19:54:47 +0100 |
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committer | Gerrit Code Review <gerrit@5.9.244.119> | 2013-01-07 19:54:47 +0100 |
commit | 37407646b957b880876c56c19032b07a1c028656 (patch) | |
tree | f8274f194bbda84057b90aada803a5a20bf61712 /mtdutils/rk30hack.h | |
parent | Add mode when open(O_CREAT) is used. (diff) | |
parent | Work around MEMERASE ioctl for rk3066 compatibility (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | mtdutils/rk30hack.h | 37 |
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__ |