From 80a90edd47d20141cfb7b18ededc9a3090fba58c Mon Sep 17 00:00:00 2001 From: Sergey 'Jin' Bostandzhyan Date: Fri, 4 Jan 2013 02:29:03 +0100 Subject: Work around MEMERASE ioctl for rk3066 compatibility Due to a kernel bug and no available sources we have to work around the MEMERASE ioctl - if used, it hangs and never returns. I straced the original recovery executable and could see that it is simply calling write() with a bunch of zeroes instead of using MEMERASE. Added a hack that does the same and now the resulting TWRP recovery image works. Change-Id: I1b1c1c9e870e350776346bdca5d442c7ef565aa0 --- mtdutils/bml_over_mtd.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'mtdutils/bml_over_mtd.c') 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", -- cgit v1.2.3