Artesyn ATCA 7370 / ATCA 7370-S Installation and Use (June 2014) - Manual (Page 87)

BIOS
ATCA-7370/ATCA-7370-S Installation and Use (6806800P54F) 87
4.1.16 SPI Boot Flash
The SPI boot flash contains a descriptor mode image with all required parameters as described
in Intel®Patsburg chipset SPI Flash Programming Guide Revision 1.6 (Intel Confidential)
4.1.17 Serial Console and BIOS Printouts
The BIOS initializes the serial port and uses the serial port as output console. The default
settings for the serial port are: 9600 bps, 8 data bits, no parity, 1 stop bits, no flow control.
The BIOS printout does not cause any significant delay to boot up. Default terminal emulation
is VT-100. The ATCA-7370 vendor, Phoenix, specifies and documents the terminal hot keys and
keystroke mapping for VT-100, ANSI and VT-UTF8.
The BIOS prints all errors found during BIOS phase. In addition to errors, BIOS prints the
information contained in the Board Information to console.
4.1.17.1 BIOS Printouts to DRAM
BIOS console printouts are stored in a specific area of the DRAM. The printouts are accessible
by the OS, allowing the use of the startup information for debugging and troubleshooting.
Storing the optional ROM printouts is not required. All printouts from the serial console are
logged into the DRAM buffer.
A simple structure is used to locate the printouts buffer and define its size. This floating
structure is located between addresses E000h and FFFFFh.
Table 4-2 Printout Floating Structure
Field
Offset (in
bytes:bits) Length (in
bits)
Description
SIGNATURE 0 32 The ASCII string represented by "_CP_" which serves
as a search key for locating the pointer structure.
VERSION 4 16 Version (low byte = minor, high byte = major).
Version 1.00 (0100h) is defined.
PHYSICAL ADDRESS
POINTER 6 32 The address of the beginning of the CP table. All
zeros if the CP table does not exist.
BUFFER SIZE 10 16 Printouts buffer size in bytes.