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

U-Boot Firmware
ATCA-F120 Installation and Use (6806800D06J) 97
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>