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author | Stefan Roese <sr@denx.de> | 2007-08-15 21:06:27 +0200 |
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committer | Stefan Roese <sr@denx.de> | 2007-08-15 21:06:27 +0200 |
commit | b706d63559aeec352bc72dd86d7d5423c15f6a60 (patch) | |
tree | fdeda4d61970fef239d9d66ecd851fa46cfe5ec0 /fs/fat/fat.c | |
parent | c8603cfbd4573379a6076c9c208545ba2bbf019a (diff) | |
parent | 594e79838ce5078a90d0c27abb2b2d61d5f8e8a7 (diff) | |
download | u-boot-imx-b706d63559aeec352bc72dd86d7d5423c15f6a60.zip u-boot-imx-b706d63559aeec352bc72dd86d7d5423c15f6a60.tar.gz u-boot-imx-b706d63559aeec352bc72dd86d7d5423c15f6a60.tar.bz2 |
Merge with git://www.denx.de/git/u-boot.git
Diffstat (limited to 'fs/fat/fat.c')
-rw-r--r--[-rwxr-xr-x] | fs/fat/fat.c | 57 |
1 files changed, 35 insertions, 22 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 3007608..e98e50a 100755..100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -31,7 +31,7 @@ #include <asm/byteorder.h> #include <part.h> -#if (CONFIG_COMMANDS & CFG_CMD_FAT) +#if defined(CONFIG_CMD_FAT) /* * Convert a string to lowercase. @@ -70,10 +70,11 @@ int fat_register_device(block_dev_desc_t *dev_desc, int part_no) { unsigned char buffer[SECTOR_SIZE]; + disk_partition_t info; if (!dev_desc->block_read) return -1; - cur_dev=dev_desc; + cur_dev = dev_desc; /* check if we have a MBR (on floppies we have only a PBR) */ if (dev_desc->block_read (dev_desc->dev, 0, 1, (ulong *) buffer) != 1) { printf ("** Can't read from device %d **\n", dev_desc->dev); @@ -88,30 +89,40 @@ fat_register_device(block_dev_desc_t *dev_desc, int part_no) /* ok, we assume we are on a PBR only */ cur_part = 1; part_offset=0; - } - else { -#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ - (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) || \ + } else { +#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_SCSI) || \ + defined(CONFIG_CMD_USB) || \ (defined(CONFIG_MMC) && defined(CONFIG_LPC2292)) || \ defined(CONFIG_SYSTEMACE) ) - disk_partition_t info; - if(!get_partition_info(dev_desc, part_no, &info)) { + /* First we assume, there is a MBR */ + if (!get_partition_info (dev_desc, part_no, &info)) { part_offset = info.start; cur_part = part_no; - } - else { - printf ("** Partition %d not valid on device %d **\n",part_no,dev_desc->dev); + } else if (!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3)) { + /* ok, we assume we are on a PBR only */ + cur_part = 1; + part_offset = 0; + } else { + printf ("** Partition %d not valid on device %d **\n", + part_no, dev_desc->dev); return -1; } #else - /* FIXME we need to determine the start block of the - * partition where the DOS FS resides. This can be done - * by using the get_partition_info routine. For this - * purpose the libpart must be included. - */ - part_offset=32; - cur_part = 1; + if(!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],"FAT",3)) { + /* ok, we assume we are on a PBR only */ + cur_part = 1; + part_offset = 0; + info.start = part_offset; + } else { + /* FIXME we need to determine the start block of the + * partition where the DOS FS resides. This can be done + * by using the get_partition_info routine. For this + * purpose the libpart must be included. + */ + part_offset = 32; + cur_part = 1; + } #endif } return 0; @@ -975,8 +986,10 @@ file_fat_detectfs(void) printf("No current device\n"); return 1; } -#if (CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) || (CONFIG_MMC) +#if defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_SCSI) || \ + defined(CONFIG_CMD_USB) || \ + (CONFIG_MMC) printf("Interface: "); switch(cur_dev->if_type) { case IF_TYPE_IDE : printf("IDE"); break; @@ -1017,4 +1030,4 @@ file_fat_read(const char *filename, void *buffer, unsigned long maxsize) return do_fat_read(filename, buffer, maxsize, LS_NO); } -#endif /* #if (CONFIG_COMMANDS & CFG_CMD_FAT) */ +#endif |