How do I boot from eMMC?

How do I boot from eMMC?

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1. Insert a bootable SD card into the Linux development host.
2. Unmount the SD card and use it for booting the i.MX 8M SOM.
3. In the Linux command prompt unmount the eMMC (if it is mounted) in order to make sure it ready for the partitioning:

What is eMMC fastboot?

eMMC Fast Boot Mode (Apalis/Colibri iMX6) The Embedded Multi Media Card Specification (eMMC 4.3) adds a fast boot feature during the ROM stages that requires hardware support. 6b1 release automatically migrates to eMMC fast boot mode when updating.

What is eMMC boot partition?

The eMMC device has a boot area, which is seen as a different block device than the regular user area. It is a vendor specific area that uses an underlying storage technology more reliable than the user area, for instance SLC or pSLC instead of MLC.

What is mmcblk0boot0?

mmcblk0boot0 is a hardware-defined partition in the eMMC distinct from the mmcblk0pN partitions that are defined by the MBR partition table in the “user area”.

How use fastboot Linux?

There’s no need to install it on a Mac or Linux computer, so simply unzip the download and save the folder to a convenient location, such as on your desktop or in the Applications folder. Open the folder, and then the platform-tools subfolder within it. Here you should see an icon labelled fastboot.

How to check for bootable eMMC on SD card?

After checking for valid boot signatures on the SD card (SDC0), the BROM will check the eMMC boot partition configuration in EXT_CSD [179] (if it finds an eMMC device on SDC2).

How to boot from eMMC on am3517?

The second command formats the first partition as FAT32 for use with the AM3517’s boot ROM. This is a requirement to boot from the eMMC. The first partition must be formatted FAT32 and the MLO binary must be in the first sector for the eMMC boot sequence to work properly.

How to format a partition in eMMC boot ROM?

The root parameter is used to specify the partition to use while the rootfstype parameter is used to specify the formatting of the partition. Partitions accessed by processor boot ROM or U-Boot typically need to be formatted with FAT32 formatting.

Where is the first stage bootloader stored in eMMC?

Which means that it can be treated as a single large block device representing its full capacity. And the first stage bootloader (U-Boot SPL or Allwinner’s boot0) is expected to be stored in a special hardcoded place between the MBR and the first partition, which does not play very nice with GPT partitioning.