DESK-XZU-L/Peripherals/eMMC
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| 2026/06/25 | DESK-XZU-L 2.x.x release | ||
Contents
Peripheral eMMC[edit | edit source]
The eMMC device, if present, will be associated by the Linux kernel to the mmcblk1 device:
Accessing the peripheral[edit | edit source]
Linux messages at boot time[edit | edit source]
[ 2.637808] mmc1: SDHCI controller on ff160000.mmc [ff160000.mmc] using ADMA 64-bit [ 2.708067] mmc1: new HS200 MMC card at address 0001 [ 2.714397] mmcblk1: mmc1:0001 IS128G 116 GiB [ 2.724386] mmcblk1boot0: mmc1:0001 IS128G 4.00 MiB [ 2.730795] mmcblk1boot1: mmc1:0001 IS128G 4.00 MiB [ 2.737055] mmcblk1rpmb: mmc1:0001 IS128G 4.00 MiB, chardev (239:0)
Additional information[edit | edit source]
Once detected, it can be mounted and accessed via usual Linux commands:
root@onda:~# mkdir -p /mnt/mmcblk1p1 root@onda:~# mkdir -p /mnt/mmcblk1p2 root@onda:~# mount /dev/mmcblk1p1 /mnt/mmcblk1p1 root@onda:~# mount /dev/mmcblk1p2 /mnt/mmcblk1p2 root@onda:~# ls /mnt/mmcblk1p1 BOOT.BIN Image boot.scr image.ub.err system.dtb uboot-redund.env root@onda:~# ls /mnt/mmcblk1p2 bin boot dev etc home lib lost+found media mnt proc root run sbin srv sys tmp usr var root@onda:~# root@onda:~# dd if=/dev/zero of=test_file_100MB bs=1M count=100 100+0 records in 100+0 records out 104857600 bytes (105 MB, 100 MiB) copied, 6.16073 s, 17.0 MB/s root@onda:~# time cp test_file_100MB /mnt/mmcblk1p1 real 0m1.267s user 0m0.005s sys 0m1.248s
