03. Boot from SD card

Boot from SD card

This is a short instruction that shows how to boot an imx8 image at the very 1-st time.

The very 1-st boot

Covered machines: cl-som-imx8

• Insert the sd-card into the SB-SOM-iMX8 P9 slot. Make sure that a jumper is on P5-25 and P5-26 pins.

• Power up the device
• Stop in U-Boot Issue:
  

⚠️ This sequence MUST be invoked for the very 1-st boot only ⚠️

env default -a; saveenv; reset

PMIC:  PFUZE100 ID=0x10
check ddr4_pmu_train_imem code
check ddr4_pmu_train_imem code pass
check ddr4_pmu_train_dmem code
check ddr4_pmu_train_dmem code pass
Training PASS
Normal Boot
SPL Boot Device: MMC1
Trying to boot from MMC1


U-Boot 2017.03-imx_v2017.03_4.9.51_imx8m_beta+g0adb492 (Feb 06 2018 - 17:45:09 +0200)

CPU:   Freescale i.MX8MQ rev2.0 1500 MHz (running at 1000 MHz)
CPU:   Commercial temperature grade (0C to 95C) at 41C
Reset cause: POR
Model: CompuLab CL-SOM-iMX8
DRAM:  2 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc0(part 0) is current device
Net:   eth0: ethernet@30be0000
Normal Boot
Hit any key to stop autoboot:  0
u-boot=> env default -a
## Resetting to default environment
u-boot=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done
u-boot=> reset

• Let the device boot up
• Evaluate this Yocto Release