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SD card not recognized by ubuntu(armhf)/xfce

Former Member

Hi community,
i copied the ubuntu file system and boot files to SD card (fat32 and ext4 partition), similar to http://www.wiki.xilinx.com/Ubuntu+on+Zynq, (but without initramfs).

Now i would like to modify the files on the fat32 partition, but the mmcblk0p1 (and 2) do not show up in /dev.

dmesg | grep mmc
mmc0: no vmmc regulator found
mmc0: invalid maximum block size, assuming 512 bytes
mmc0: SDHCI controller on e0100000.sdhci[...] using ADMA
mmc0: new high speed SDXC card at address aaaa
mmcblk0: mmc0:aaaa SU64G 59.4 GiB
mmcblk0: p1 p2
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

the output is the same like with other linux implementations...the only difference, mmcblk0p1 and p2 show up in /dev.

Can you tell me, what is the problem there? why is mmcblk0p1 not showing up? Are there other ways to mount the sd card?
the card also doesn't show up in df -h....

thanks in advance for every hint.

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    Hi hrebec,

    According to Section 6.3.4 of "UG585 - Zynq-7000 AP SoC Technical Reference Manual" version 1.6:

    SD Card

    SD boot supports these features:
    u2022 Boot from standard SD or SDHC cards
    u2022 FAT 16/32 file system support for storing initial image
    u2022 Up to 32GB densities

    So I think that 32GB is the maximum density that is supported.  However, as you indicated, if your SDXC card has backwards compatibility with SDHC then it will likely also work.

    I think based upon what Charles is reporting, that he is past the point of main concern with the BootROM being able to recognize the SD card.

    Hopefully Charles is able to confirm whether or not the additional nodes helped resolve his issue.

    Regards,

    -Kevin

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  • 0

    Hi hrebec,

    According to Section 6.3.4 of "UG585 - Zynq-7000 AP SoC Technical Reference Manual" version 1.6:

    SD Card

    SD boot supports these features:
    u2022 Boot from standard SD or SDHC cards
    u2022 FAT 16/32 file system support for storing initial image
    u2022 Up to 32GB densities

    So I think that 32GB is the maximum density that is supported.  However, as you indicated, if your SDXC card has backwards compatibility with SDHC then it will likely also work.

    I think based upon what Charles is reporting, that he is past the point of main concern with the BootROM being able to recognize the SD card.

    Hopefully Charles is able to confirm whether or not the additional nodes helped resolve his issue.

    Regards,

    -Kevin

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