Artesyn ATCA-F120 Installation and Use (August 2014) User Manual download pdf (Page 97)

U-Boot Firmware

ATCA-F120 Installation and Use (6806800D06J)

5.8 Power-On Self Test

When the ATCA-F120 is booted, U-boot executes a series of Power-On Self test (POST)

routines. They check the functionality of different controllers and other on-board resources.

The result of the POST is stored in memory and has the following format.

The results of POST are also stored in the environment variable post_result.

/dev/mtd12 /tftpboot partition - -

Table 5-2 Linux Devices (continued)

Linux Device Name Content Memory Area Hardware Device

Table 5-3 POST Result Format

Offset Description

0x0 Magic word: 0xAA55FCE0

0x04 CRC32 checksum over the POST result string

0x08 POST result string.

This is a zero-terminated string which is based on the

following XML-like syntax:

[<T=tag>[<E>Error_description</E>]*</T>]*

tag identifies the device that was tested. If no POST error

was detected, then the closing tag </T> follows

immediately after the opening tag.

Error_Description contains an error description of

the corresponding <T> tag. Note that the <T> tags can be

nested, if for example several subtests are performed in

one device. See the following example.

<T=FPGA></T>

<T=DRAM><E>Address line</E></T>

<T=PCI><T=BIX></T><T=FIX2></T><T=FIX1></T

></T>

<T=SPI><T=BEXT></T></T>

<T=I2C><T=CTRL1></T><T=CTRL2></T></T>

<T=MDIO><T=PHY0></T><T=PHY1></T><T=PHY2><

/T><T=PHY3></T></T>

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Artesyn ATCA-F120 Installation and Use (August 2014) User Manual Page 97