REL 1.0
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iWave Systems Technologies Pvt. Ltd.
iW-RainboW-G15D Linux User Manual
4.
U-BOOT TESTING AND BOOT CONFIGURATION
This part of the document explains about testing the peripherals in u-boot level and loading the Linux OS from
different devices for iW-RainboW-G15M-Q7 platform.
iW-RainboW-G15M-Q7 platform can boot from one of the below boot media devices.
SPI Flash (default)
Micro SD
eMMC
SATA (Only in Quad/Dual Processor)
Standard SD
Connect debug UART with host PC and Power ON the iW-RainboW-G15M-Q7 platform. Refer the sections
Debug UART Setting and Powering ON iW-RainboW-G15D in iW-RainboW-G15D-QuickStartGuide document
to connect debug UART and power ON procedure.
To enter in boot loader console, refer the section Linux Test Environment section in iW-RainboW-G15D
QuickStartGuide document to get the boot loader console.
Note: Refer the section Boot Media Setting in i.MX6-QsevenSOM-HardwareUserGuide document for boot media
device selection.
4.1
Basic commands
To find available commands and descriptions in U-Boot level type the below command.
iWave-G15 >help
The Available commands will be displayed in command prompt as shown below.
bdinfo - print Board Info structure
boot - boot default, i.e., run 'bootcmd'
bootm - boot application image from memory
saveenv - save environment variables to persistent storage
setenv - set environment variables
To display the platform information, execute the below command.
iWave-G15 >bdinfo