From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mms1.broadcom.com ([216.31.210.17]) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QZQdk-00051H-GL for linux-mtd@lists.infradead.org; Wed, 22 Jun 2011 16:50:57 +0000 From: "Brian Norris" To: "Artem Bityutskiy" Subject: [PATCH v3 1/7] nanddump: add --bb=METHOD option Date: Wed, 22 Jun 2011 09:49:17 -0700 Message-ID: <1308761363-16512-2-git-send-email-computersforpeace@gmail.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: David Woodhouse , Brian Norris , linux-mtd@lists.infradead.org, Mike Frysinger List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , We have too many separate bad block handling methods: --omitbad --noskipbad --skipbad On top of these, we have the default option: that bad blocks are replaced with 0xFF. These options will be unified under --bb=METHOD. The end goal will be something like: ---------------------------------------------------------------------------------------------- Old option New option Comment ---------------------------------------------------------------------------------------------- --bb=padbad dump flash data, substituting 0xFF for any bad blocks --noskipbad --bb=dumpbad dump flash data, including any bad blocks --skipbad --bb=skipbad dump good data, completely skipping any bad blocks (new default) --omitbad N/A very similar to `skipbad' (DEPRECTATED) The BB options are all mutually exclusive, so we check that we do not have more than one BB option explicitly enabled on the command line by tracking whether or not a BB method has been set by the user. Signed-off-by: Brian Norris --- nanddump.c | 67 ++++++++++++++++++++++++++++++++++++++++------------------- 1 files changed, 45 insertions(+), 22 deletions(-) diff --git a/nanddump.c b/nanddump.c index c9d7e8b..08f8964 100644 --- a/nanddump.c +++ b/nanddump.c @@ -88,21 +88,26 @@ static void display_version(void) static bool pretty_print = false; // print nice static bool noecc = false; // don't error correct -static bool noskipbad = false; // don't skip bad blocks static bool omitoob = false; // omit oob data static long long start_addr; // start address static long long length; // dump length static const char *mtddev; // mtd device name static const char *dumpfile; // dump file name -static bool omitbad = false; static bool quiet = false; // suppress diagnostic output static bool canonical = false; // print nice + ascii static bool forcebinary = false; // force printing binary to tty -static bool skipbad = false; // skip over bad blocks + +static enum { + padbad, // dump flash data, substituting 0xFF for any bad blocks + dumpbad, // dump flash data, including any bad blocks + skipbad, // dump good data, completely skipping any bad blocks + omitbad // dump flash data, substituting nothing for any bad blocks (DEPRECATED) +} bb_method = padbad; static void process_options(int argc, char * const argv[]) { int error = 0; + bool bb_default = true; for (;;) { int option_index = 0; @@ -110,6 +115,7 @@ static void process_options(int argc, char * const argv[]) static const struct option long_options[] = { {"help", no_argument, 0, 0}, {"version", no_argument, 0, 0}, + {"bb", required_argument, 0, 0}, {"forcebinary", no_argument, 0, 'a'}, {"canonicalprint", no_argument, 0, 'c'}, {"file", required_argument, 0, 'f'}, @@ -140,10 +146,28 @@ static void process_options(int argc, char * const argv[]) case 1: display_version(); break; + case 2: + /* Handle --bb=METHOD */ + if (!strcmp(optarg, "padbad")) + bb_method = padbad; + else if (!strcmp(optarg, "dumpbad")) + bb_method = dumpbad; + else if (!strcmp(optarg, "skipbad")) + bb_method = skipbad; + else + error++; + bb_default = false; + break; } break; case 'b': - omitbad = true; + /* Check if bb_method was already set explicitly */ + if (bb_default) { + bb_default = false; + bb_method = omitbad; + } else { + error++; + } break; case 's': start_addr = simple_strtoll(optarg, &error); @@ -175,10 +199,22 @@ static void process_options(int argc, char * const argv[]) noecc = true; break; case 'N': - noskipbad = true; + /* Check if bb_method was already set explicitly */ + if (bb_default) { + bb_default = false; + bb_method = dumpbad; + } else { + error++; + } break; case 'k': - skipbad = true; + /* Check if bb_method was already set explicitly */ + if (bb_default) { + bb_default = false; + bb_method = skipbad; + } else { + error++; + } break; case '?': error++; @@ -206,19 +242,6 @@ static void process_options(int argc, char * const argv[]) exit(EXIT_FAILURE); } - if (noskipbad && skipbad) { - fprintf(stderr, "The noskipbad and skipbad options are " - "mutually-exclusive.\n" - "Choose one or the other.\n"); - exit(EXIT_FAILURE); - } - - if (omitbad && skipbad) { - fprintf(stderr, "The omitbad and skipbad options are mutually-" - "exclusive.\nChoose one or the other.\n"); - exit(EXIT_FAILURE); - } - if ((argc - optind) != 1 || error) display_help(); @@ -416,7 +439,7 @@ int main(int argc, char * const argv[]) /* Dump the flash contents */ for (ofs = start_addr; ofs < end_addr; ofs += bs) { /* Check for bad block */ - if (noskipbad) { + if (bb_method == dumpbad) { badblock = 0; } else if (blockstart != (ofs & (~mtd.eb_size + 1)) || firstblock) { @@ -430,14 +453,14 @@ int main(int argc, char * const argv[]) if (badblock) { /* skip bad block, increase end_addr */ - if (skipbad) { + if (bb_method == skipbad) { end_addr += mtd.eb_size; ofs += mtd.eb_size - bs; if (end_addr > mtd.size) end_addr = mtd.size; continue; } - if (omitbad) + if (bb_method == omitbad) continue; memset(readbuf, 0xff, bs); } else { -- 1.7.0.4