NAME
intro —
introduction to emips special
files and hardware support
DESCRIPTION
This section describes the special files, related driver functions, and
networking support available in the system. In this part of the manual, the
SYNOPSIS section of each configurable device gives a sample specification for
use in constructing a system description for the
config(1) program. The
DIAGNOSTICS section lists messages which may appear on the console and/or in
the system error log
/var/log/messages due to errors in
device operation; see
syslogd(8) for more
information.
This section contains both devices which may be configured into the system and
network related information. The networking support is introduced in
netintro(4).
DEVICE SUPPORT
This section describes the hardware supported on eMIPS (Microsoft Extensible
MIPS processor)-based platforms. Software support for these devices comes in
two forms. A hardware device may be supported with a character or block
device driver, or it may be used within the networking
subsystem and have a
network interface driver. Block and
character devices are accessed through files in the file system of a special
type; see
mknod(8). Network
interfaces are indirectly accessed through the interprocess communication
facilities provided by the system; see
socket(2).
A hardware device is identified to the system at configuration time and the
appropriate device or network interface driver is then compiled into the
system. When the resultant system is booted, the autoconfiguration facilities
in the system probe for the device and, if found, enable the software support
for it. If a device does not respond at autoconfiguration time it is not
accessible at any time afterwards. To enable a device which did not
autoconfigure, the system must be rebooted.
The autoconfiguration system is described in
emips/autoconf(4). A
list of the supported devices is given below.
SEE ALSO
config(1),
emips/autoconf(4)
SUPPORTED SYSTEMS
The following systems are supported:
- BeSquare BErkeley Emulation
System-3 FPGA development board
- known as the "BEE3". This is a quad-chip FPGA
system where eMIPS can run on each FPGA separately, on multiple FPGAs in
concert, and in multi-processor configurations.
- Xilinx University Program
board
- known as "XUP". This is the Xilinx reference
board for the Virtex-5 series chips. It can use the same XL110T FPGA chip
present on the BEE3.
- Xilinx ML402
- Xilinx reference board for the Virtex-4 series chip,
including the SX35.
- Xilinx ML401
- Same as the above, but with the smaller LX25 chip.
LIST OF DEVICES
The devices listed below are supported in this incarnation of the system.
Devices are indicated by their functional interface. Not all supported devices
are listed.
- ace
- Xilinx SystemACE interface for Compact-FLASH cards, bears
similarities to the IDE interface. Present on XUP and ML40x boards. Not
present on BEE3.
- dz
- serial driver for the eMIPS console serial device. Present
on all systems.
- enic
- Ethernet driver for the eNIC device. Present on XUP and
BEE3 systems. Not present on ML40x systems.
- eclock
- System clock, must be configured on all systems.
- ebus
- Extensible BUS, present on all systems.
HISTORY
This eMIPS
intro appeared in
NetBSD
6.0.