MMC 1G 를 넣었는데

다음과 같이 인식이 됩니다.

[root@Bluesky /mnt]# [card_detect_interrupt] SD CD = 0
[card_detect_interrupt] SD CD = 1
[card_detect_interrupt] card inserted
[add_mmc_device] slot id: 0
sent CMD0
[send_cmd] Timeout Error
sent CMD55
retry to check MMC or SD
sent CMD0
[send_cmd] Timeout Error
sent CMD55
retry to check MMC or SD
sent CMD0
[send_cmd] Timeout Error
sent CMD55
identify MultiMediaCard
sent CMD2
mid = 0x15, oid = 0x0000, pnm = 000000, prv = 17
psn = 0x13000008, mdt = 0x09
sent CMD3
R1 = 00000500
sent CMD9
csd(2) spec(4) taac.man(4) taac.exp(6) nsac(1)
tran.man(5) tran.exp(2) ccc(0f5) read_len(9)
read_part(0) write_mis(0) read_mis(0) dsr(0) c_size(3919)
vcc_r_min(6) vcc_r_max(6) vcc_w_min(6) vcc_w_max(6)
c_size_mult(7) er_size(15) er_grp_size(31) wp_grp_size(31)
wp_grp_en(1) dflt_ecc(0) r2w_factor(4) write_len(9)
write_part(0) ffmt_grp(0) copy(1) perm_wp(0) tmp_wp(0)
ffmt(0) ecc(0)
mmca:[mmc_do_transfer_1blk] from: 0, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 512, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 1024, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 1536, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 2048, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 2560, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 3072, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
[mmc_do_transfer_1blk] from: 3584, read: 1
sent CMD7
sent CMD17
sent CMD7(DESELECT)
mmca1 mmca2 mmca3 mmcb
Register MultiMediaCard: 980MB

다음과 같이 따라했습니다.

mmc card를 마운트하기 위해서는 /dev 디렉토리에 다음과 같이 device 파일을 만들어야 합니다.

mknod /dev/mmc b 60 0
mknod /dev/mmc1 b 60 1
mknod /dev/mmc2 b 60 2

그런 다음

bash-2.04# mount -t msdos /dev/mmc1 /mnt/usb/ 라고 명령을 하면 마운트가 됩니다.

참고로 mmc card는 windows에서 fat 형식으로 포맷을 하였습니다.

그리고 결과는

[root@Bluesky /mnt]# mount -t msdos /dev/mmc1 /mnt/usb/
[mmc_do_transfer_1blk] from: 3268593664, read: 1
sent CMD7
sent CMD17
CMD17 failed, ret = -5
sent CMD7(DESELECT)
[do_mmc_rw] error: -5
end_request: I/O error, dev 3c:01 (mmc), sector 0
FAT: unable to read boot sector
mount: wrong fs type, bad option, bad superblock on /dev/mmc1,
       or too many mounted file systems
[root@Bluesky /mnt]#

일전에 사용하다가 커널 새로 컴파일 후 사용시 문제가 되었습니다.

문제점 아시는분은 조언 부탁드립니다.