Phytec L-1017e.A3 i.MX 8M Plus, Manual

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L-1017e.A3 i.MX 8M Plus BSP Manual
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Flash eMMC from USB
Flash eMMC from USB in u-boot on Target
These steps will show how to update the eMMC via a USB device. Configure the bootmode switch to boot from SD
Card and put in an SD card. Power on the board and stop in u-boot prompt . Insert a USB device with the copied
*.sdcard image to the USB slot.
Load your image from the USB device to RAM:
u-boot=> usb start
starting USB...
USB0: USB EHCI
1.00
scanning bus 0 for devices... 2 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found
u-boot=> fatload usb 0 : 1 ${loadaddr} *.sdcard
497444864 bytes read in 31577 ms ( 15 MiB/s)
Write the image to the eMMC:
u-boot=> mmc dev 2
switch to partitions # 0 , OK
mmc2(part 0 ) is current device
u-boot=> setexpr nblk ${filesize} / 0x200
u-boot=> mmc write ${loadaddr} 0x0 ${nblk}
MMC write: dev # 2 , block # 0 , count 1024000 ... 1024000 blocks written: OK
u-boot=> boot
Flash eMMC from USB in Linux
These steps will show how to flash the eMMC on Linux with a USB stick. You only need a complete image saved on
the USB stick and a bootable sdcard. (e.g.
phytec-qt5demo-image-phyboard-pollux-imx8mp-3.sdcard ). Set
the bootmode switch to boot from SD Card .
Insert and mount the USB stick:
[ 60.458908 ] usb-storage 1 - 1.1 : 1.0 : USB Mass Storage device detected
[ 60.467286 ] scsi host0: usb-storage 1 - 1.1 : 1.0
[ 61.504607 ] scsi 0 : 0 : 0 : 0 : Direct-Access 8.07 PQ: 0
ANSI: 2
[ 61.515283 ] sd 0 : 0 : 0 : 0 : [sda] 3782656 512 - byte logical blocks: ( 1.94 GB/ 1.80 GiB)
[ 61.523285 ] sd 0 : 0 : 0 : 0 : [sda] Write Protect is off
Tip
This step only works if the site of the image file fits into the free RAM space of the Bootloader.
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