U-Boot
U-Boot
Das U-Boot (Universal Bootloader) is an open source, primary boot loader used in embedded devices to package the instructions to boot the device's operating system kernel. It is available for a number of computer architectures, including 68k, ARM, AVR32, Blackfin, MicroBlaze, MIPS, Nios, SuperH, PPC and x86.- Wikipedia
Host Computer / Board Connection
Connect Intel Edison to your Host Computer using the registered COM / TTY device and launch your serial interface, e.g. Linux
In Linux
$ dmesg
[11940.538090] ftdi_sio 6-1:1.0: FTDI USB Serial Device converter detected
[11940.538137] usb 6-1: Detected FT232RL
[11940.538139] usb 6-1: Number of endpoints 2
[11940.538142] usb 6-1: Endpoint 1 MaxPacketSize 64
[11940.538144] usb 6-1: Endpoint 2 MaxPacketSize 64
[11940.538147] usb 6-1: Setting MaxPacketSize 64
[11940.540185] usb 6-1: FTDI USB Serial Device converter now attached to ttyUSB0
$ sudo minicom -D /dev/ttyUSB0 115200Bootup Cancel
******************************
PSH KERNEL VERSION: b0182b2b
WR: 20104000
******************************
SCU IPC: 0x800000d0 0xfffce92c
PSH miaHOB version: TNG.B0.VVBD.0000000c
microkernel built 11:24:08 Feb 5 2015
******* PSH loader *******
PCM page cache size = 192 KB
Cache Constraint = 0 Pages
Arming IPC driver ..
Adding page store pool ..
PagestoreAddr(IMR Start Address) = 0x04899000
pageStoreSize(IMR Size) = 0x00080000
*** Ready to receive application ***
U-Boot 2014.04 (Jun 06 2016 - 14:40:07)
Watchdog enabled
DRAM: 980.6 MiB
MMC: tangier_sdhci: 0
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 1
boot >U-Boot Commands from U-Boot
help
printenv
Bootup Kernel
U-Boot Commands from Linux
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