am437x SD/EMMC boot order and device node

user5152479

Dear all,

I setup am437x boot order is SD, EMMC, when I input linux system, SD device node is /dev/mmcblk0, emmc device node is /dev/mmcblk1, when I setup am437x boot order is EMMC,SD, what is SD device node? what is EMMC device node?

over 6 years ago

0 Kemal R. Shakir over 6 years ago

TI__Guru 55345 points

Hello user5152479,

If you are using Processor SDK version below 3.03.04 the device from where you boot will be mapped on /dev/mmcblk0. If you boot from SD card, the SD card will be mapped on /dev/mmcblk0. If you boot from eMMC, the eMMC will be mapped on /dev/mmcblk0. If you are using Processor SDK version above 4.00.04 the eMMC will be always mapped on /dev/mmcblk1.

Best regards,
Kemal

0 user5152479 over 6 years ago in reply to Kemal R. Shakir

Intellectual 545 points

Dear Kemal,

Thank!

When I boot from eMMC, if I want eMMC mapped on /dev/mmcblk0, how to do it?

0 Kemal R. Shakir over 6 years ago in reply to user5152479

TI__Guru 55345 points

Here, apply the patch from this post.

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am437x SD/EMMC boot order and device node