source: rtems/c/src/lib/libbsp/powerpc/virtex/README @ d11d1d2a

#
#  $Id$
#

# Adapted from vitex BSP

BSP NAME:           Virtex
BOARD:              Xilinx ML-403 and (hopefully) any vitex/PPC based board
BUS:                N/A
CPU FAMILY:         ppc
CPU:                PowerPC 405GP
COPROCESSORS:       N/A
MODE:               32 bit mode

DEBUG MONITOR:

PERIPHERALS
===========
TIMERS:             405GP internal
SERIAL PORTS:       Xilinx consolelite
REAL-TIME CLOCK:    none
DMA:                Xilinx vitex internal
VIDEO:              none
SCSI:               none
NETWORKING:         Xilinx TEMAC

DRIVER INFORMATION
==================
CLOCK DRIVER:       PPC Decrementer
IOSUPP DRIVER:      N/A
SHMSUPP:            N/A
TIMER DRIVER:       N/A
TTY DRIVER:         consoleelite

STDIO
=====
PORT:               Console port 0
ELECTRICAL:         RS-232
BAUD:               as defined in FPGA design
BITS PER CHARACTER: 8
PARITY:             None
STOP BITS:          1

Notes
=====

Board description
-----------------
clock rate:     234 MHz
ROM:            16MByte FLASH
RAM:            64MByte DRAM

virtex only supports single processor operations.

Porting
-------
This board support package is written for a typical virtex/PPC FPGA
system. The rough features of such a board are described above.

When a new virtex FPGA system is created (using the Xilinx design
software), a parameter file "xparameters.h" is also created, which
describes the basic features of the hardware (like peripherals
inculded, interrupt routing etc).

This BSP normally takes its basic HW description for the file
"xparameters_dflt.h", which describes my FPGA system. When this BSP
should run on a different hardware, a path to the proper
"xparameters.h" can be provided on the "configure" command line.

For adapting this BSP to other boards, 

the following files should be
modified:

- c/src/lib/libbsp/powerpc/virtex/startup/linkcmds
        for the memory layout required

- c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c
        Here you can select the clock source for the timers and the
        serial interface (system clock or external clock pin), the clock
        rates, initial baud rate and other stuff

- c/src/lib/libbsp/powerpc/virtex/include/bsp.h
        some BSP-related constants

- c/src/lib/libbsp/powerpc/virtex/*
        well, they should be generic, so there _should_ be no reason
        to mess around there (but who knows...)