Emerson ATCA-S201 manual UImage, Flash boot device contents

RTM-ATCA-SXXX Overview

Power-On

(Soft Reset)

Jumper 1: All FW Code retrieved		Jumper 1: All FW Code retrieved
	from “Customer”		from “Factory”
	Flash		Flash
	Fetch “u-boot.bin”
	from flash device		Key

-Pause-

bootdelay countdown

Key Pressed	No key
	Pressed

Normal boot sequence Exception boot sequence

Enter u-boot Prompt mode

Network boot

Manual IP network config Flash recovery/rescue

Run contents of bootcmd

Fetch “uImage”

	Linux OS Kernel
	Jumper 2:		Jumper 2:
	Normal position		Password reset
Use encrypted Password file		Clear root password only

Fetch “rootfs” Linux file system and Applications (iSCSI/NAS/Management)

Figure 6 ATCA Blade boot sequence diagram

Note: ATCA-S201 jumper locations are illustrated in chapter 9 of this manual.

3.1.2Flash boot device contents

As mentioned in the previous section, the ATCA-S201 contains two flash images, which are preloaded with code at manufacturing. Each code image is divided into four major functional sections. Overtime, the customer may periodically updated individual sections with new code revisions, as outlined below:

	Flash contents	Source file name
		U-boot.bin
	U-boot code
	Linux kernel code	uImage
	File system code	Rootfs.ext.gz.uboot
	User configuration settings
Figure 7 Boot-Flash device contents

6806800H62B ATCA‐S201 Installation and Use Guide 22