diff options
Diffstat (limited to 'fs/fdos/dev.c')
| -rw-r--r-- | fs/fdos/dev.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/fs/fdos/dev.c b/fs/fdos/dev.c deleted file mode 100644 index 4c48663..0000000 --- a/fs/fdos/dev.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * (C) Copyright 2002 - * Stäubli Faverges - <www.staubli.com> - * Pierre AUBERT p.aubert@staubli.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <config.h> - -#include "dos.h" -#include "fdos.h" - -#define NB_HEADS 2 -#define NB_TRACKS 80 -#define NB_SECTORS 18 - - -static int lastwhere; - -/*----------------------------------------------------------------------------- - * dev_open -- - *----------------------------------------------------------------------------- - */ -int dev_open (void) -{ - lastwhere = 0; - return (0); -} - -/*----------------------------------------------------------------------------- - * dev_read -- len and where are sectors number - *----------------------------------------------------------------------------- - */ -int dev_read (void *buffer, int where, int len) -{ - PRINTF ("dev_read (len = %d, where = %d)\n", len, where); - - /* Si on ne desire pas lire a la position courante, il faut un seek */ - if (where != lastwhere) { - if (!fdc_fdos_seek (where)) { - PRINTF ("seek error in dev_read"); - lastwhere = -1; - return (-1); - } - } - - if (!fdc_fdos_read (buffer, len)) { - PRINTF ("read error\n"); - lastwhere = -1; - return (-1); - } - lastwhere = where + len; - return (0); -} -/*----------------------------------------------------------------------------- - * check_dev -- verify the diskette format - *----------------------------------------------------------------------------- - */ -int check_dev (BootSector_t *boot, Fs_t *fs) -{ - unsigned int heads, sectors, tracks; - int BootP, Infp0, InfpX, InfTm; - int sect_per_track; - - /* Display Boot header */ - PRINTF ("Jump to boot code 0x%02x 0x%02x 0x%02x\n", - boot -> jump [0], boot -> jump [1], boot -> jump[2]); - PRINTF ("OEM name & version '%*.*s'\n", - BANNER_LG, BANNER_LG, boot -> banner ); - PRINTF ("Bytes per sector hopefully 512 %d\n", - __le16_to_cpu (boot -> secsiz)); - PRINTF ("Cluster size in sectors %d\n", - boot -> clsiz); - PRINTF ("Number of reserved (boot) sectors %d\n", - __le16_to_cpu (boot -> nrsvsect)); - PRINTF ("Number of FAT tables hopefully 2 %d\n", - boot -> nfat); - PRINTF ("Number of directory slots %d\n", - __le16_to_cpu (boot -> dirents)); - PRINTF ("Total sectors on disk %d\n", - __le16_to_cpu (boot -> psect)); - PRINTF ("Media descriptor=first byte of FAT %d\n", - boot -> descr); - PRINTF ("Sectors in FAT %d\n", - __le16_to_cpu (boot -> fatlen)); - PRINTF ("Sectors/track %d\n", - __le16_to_cpu (boot -> nsect)); - PRINTF ("Heads %d\n", - __le16_to_cpu (boot -> nheads)); - PRINTF ("number of hidden sectors %d\n", - __le32_to_cpu (boot -> nhs)); - PRINTF ("big total sectors %d\n", - __le32_to_cpu (boot -> bigsect)); - PRINTF ("physical drive ? %d\n", - boot -> physdrive); - PRINTF ("reserved %d\n", - boot -> reserved); - PRINTF ("dos > 4.0 diskette %d\n", - boot -> dos4); - PRINTF ("serial number %d\n", - __le32_to_cpu (boot -> serial)); - PRINTF ("disk label %*.*s\n", - LABEL_LG, LABEL_LG, boot -> label); - PRINTF ("FAT type %8.8s\n", - boot -> fat_type); - PRINTF ("reserved by 2M %d\n", - boot -> res_2m); - PRINTF ("2M checksum (not used) %d\n", - boot -> CheckSum); - PRINTF ("2MF format version %d\n", - boot -> fmt_2mf); - PRINTF ("1 if write track after format %d\n", - boot -> wt); - PRINTF ("data transfer rate on track 0 %d\n", - boot -> rate_0); - PRINTF ("data transfer rate on track<>0 %d\n", - boot -> rate_any); - PRINTF ("offset to boot program %d\n", - __le16_to_cpu (boot -> BootP)); - PRINTF ("T1: information for track 0 %d\n", - __le16_to_cpu (boot -> Infp0)); - PRINTF ("T2: information for track<>0 %d\n", - __le16_to_cpu (boot -> InfpX)); - PRINTF ("T3: track sectors size table %d\n", - __le16_to_cpu (boot -> InfTm)); - PRINTF ("Format date 0x%04x\n", - __le16_to_cpu (boot -> DateF)); - PRINTF ("Format time 0x%04x\n", - __le16_to_cpu (boot -> TimeF)); - - - /* information is extracted from boot sector */ - heads = __le16_to_cpu (boot -> nheads); - sectors = __le16_to_cpu (boot -> nsect); - fs -> tot_sectors = __le32_to_cpu (boot -> bigsect); - if (__le16_to_cpu (boot -> psect) != 0) { - fs -> tot_sectors = __le16_to_cpu (boot -> psect); - } - - sect_per_track = heads * sectors; - tracks = (fs -> tot_sectors + sect_per_track - 1) / sect_per_track; - - BootP = __le16_to_cpu (boot -> BootP); - Infp0 = __le16_to_cpu (boot -> Infp0); - InfpX = __le16_to_cpu (boot -> InfpX); - InfTm = __le16_to_cpu (boot -> InfTm); - - if (boot -> dos4 == EXTENDED_BOOT && - strncmp( boot->banner,"2M", 2 ) == 0 && - BootP < SZ_STD_SECTOR && - Infp0 < SZ_STD_SECTOR && - InfpX < SZ_STD_SECTOR && - InfTm < SZ_STD_SECTOR && - BootP >= InfTm + 2 && - InfTm >= InfpX && - InfpX >= Infp0 && - Infp0 >= 76 ) { - - return (-1); - } - - if (heads != NB_HEADS || - tracks != NB_TRACKS || - sectors != NB_SECTORS || - __le16_to_cpu (boot -> secsiz) != SZ_STD_SECTOR || - fs -> tot_sectors == 0 || - (fs -> tot_sectors % sectors) != 0) { - return (-1); - } - - return (0); -} |