X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fmtd%2Fredboot.c;h=c077d2ec9cddbe5ca19fba9e7acb53f20ed4e890;hb=f27f0a045b79de5729d064497e21a70871f1d6fe;hp=7b7ca5ab5ae41c27502c1f28800250263a2015f8;hpb=3d5271f9883cba7b54762bc4fe027d4172f06db7;p=powerpc.git diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index 7b7ca5ab5a..c077d2ec9c 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -1,5 +1,5 @@ /* - * $Id: redboot.c,v 1.18 2005/11/07 11:14:21 gleixner Exp $ + * $Id: redboot.c,v 1.19 2005/12/01 10:03:51 dwmw2 Exp $ * * Parse RedBoot-style Flash Image System (FIS) tables and * produce a Linux partition array to match. @@ -85,12 +85,32 @@ static int parse_redboot_partitions(struct mtd_info *master, numslots = (master->erasesize / sizeof(struct fis_image_desc)); for (i = 0; i < numslots; i++) { - if (buf[i].name[0] == 0xff) { - i = numslots; + if (!memcmp(buf[i].name, "FIS directory", 14)) { + /* This is apparently the FIS directory entry for the + * FIS directory itself. The FIS directory size is + * one erase block; if the buf[i].size field is + * swab32(erasesize) then we know we are looking at + * a byte swapped FIS directory - swap all the entries! + * (NOTE: this is 'size' not 'data_length'; size is + * the full size of the entry.) + */ + if (swab32(buf[i].size) == master->erasesize) { + int j; + for (j = 0; j < numslots && buf[j].name[0] != 0xff; ++j) { + /* The unsigned long fields were written with the + * wrong byte sex, name and pad have no byte sex. + */ + swab32s(&buf[j].flash_base); + swab32s(&buf[j].mem_base); + swab32s(&buf[j].size); + swab32s(&buf[j].entry_point); + swab32s(&buf[j].data_length); + swab32s(&buf[j].desc_cksum); + swab32s(&buf[j].file_cksum); + } + } break; } - if (!memcmp(buf[i].name, "FIS directory", 14)) - break; } if (i == numslots) { /* Didn't find it */ @@ -104,7 +124,7 @@ static int parse_redboot_partitions(struct mtd_info *master, struct fis_list *new_fl, **prev; if (buf[i].name[0] == 0xff) - break; + continue; if (!redboot_checksum(&buf[i])) break;