Artesyn ATCA-F120 Installation and Use (August 2014) User Manual download pdf (Page 69)

Functional Description

ATCA-F120 Installation and Use (6806800D06J)

After power-up, the watchdog is served by the U-boot firmware. Once an operating system

(OS) has successfully booted, the OS is in charge of serving the watchdog. The OS distributions

which are distributed for the ATCA-F120, i.e. in particular the Basic Blade Services software for

the ATCA-F120, serve the watchdog by default. On expiry, the watchdog resets the ATCA-F120.

If required, you can switch off the watchdog via an on-board switch. See Configuring the Blade

on page 28 for details.

4.6 Boot and User Flashes

The ATCA-F120 is equipped with two boot and two user flash devices.

4.6.1 Boot Flashes

In order to support high availability requirements, the ATCA-F120 is equipped with two

redundant boot flash devices, in the following named boot flash #1 and boot flash #2. Both are

Intel Strata flash devices which are programmed with identical images during the blade

production. Each flash device has a size of 32 MBytes.

The boot flashes contain the U-Boot firmware as well as the Linux kernel images. For details

refer to Memory Map on page 95.

By default, the ATCA-F120 always boots from boot flash #1. The boot flash device from which

to boot after the next reset/power cycle can be determined via IPMI and on-board switches. For

further information refer to Configuring the Blade on page 28 and the ATCA-F120: Control via IPMI

Programmer’s Reference (section: Supported Commands->Chassis Device Commands->System

Boot Options Commands).

4.6.2 User Flashes

The ATCA-F120 is equipped with two user flash devices. Both are standard NAND flash devices

which are connected to the local bus of the MPC8548E PowerQUICC III CPU. Each NAND flash

has a size of 2 GByte.

In its default configuration, the ATCA-F120 has two redundant root file systems

preprogrammed in the NAND flashes. See Memory Map on page 95 for further details.

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Artesyn ATCA-F120 Installation and Use (August 2014) User Manual Page 69