How to get the operating system on the eMMC

Duo
14

Thanks. OK, I have figured it out and it works!

The procedure is:

  1. build or download the emmc image
  2. format an SD card as FAT32
  3. decompress the upgrade.zip file to the SD card (all the files should be in the root directory)
  4. insert the card, wait a few seconds for it to flash (you can observe it using the serial console), turn off
  5. remove the SD card (important - otherwise it will flash again)
  6. turn the board on - congratulations, you have a system on eMMC

Was this so hard to put in the Docs?

By the way, this is the eMMC info from u-boot:

Device: cv-emmc@4300000
Manufacturer ID: 15
OEM: 100
Name: 8GTF4 
Bus Speed: 200000000
Mode: HS200 (200MHz)
Rd Block Len: 512
MMC version 5.1
High Capacity: Yes
Capacity: 7.3 GiB
Bus Width: 4-bit
Erase Group Size: 512 KiB
HC WP Group Size: 8 MiB
User Capacity: 7.3 GiB WRREL
Boot Capacity: 4 MiB ENH
RPMB Capacity: 512 KiB ENH
Boot area 0 is not write protected
Boot area 1 is not write protected

so it runs at HS200 speed which makes it quite a bit faster than the SD card.

If the SD card is inserted when whe system is booted from the eMMC, the board crashes.

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