-
This directory contains board specific code for a generic MPC860T based
embedded computer, called 'GEN860T'. The design is generic in the sense that
common, readily available components are used and that the architecture of the
-system is i(relatively) straightforward:
+system is relatively straightforward:
One eight bit wide boot (FLASH) memory
32 bit main memory using SDRAM
quality of this U-Boot port.
Here are the salient features of the system:
-Clock : 33 Mhz oscillator
-Processor core frequency : 66 Mhz if in 1:2:1 mode; can also run 1:1
-Bus frequency : 33 Mhz
+Clock : 33.3 Mhz oscillator
+Processor core frequency : 66.6 Mhz if in 1:2:1 mode; can also run 1:1
+Bus frequency : 33.3 Mhz
Main memory:
Type : SDRAM
Width : 32 bits
- Size : 64 megabytes
+ Size : 64 mibibytes
Chip : Two Micron MT48LC16M16A2TG-7E
CS : MPC860T CS1*/UPMA
UPMA CONNECTIONS:
Boot memory:
Type : FLASH
Width : 8 bits
- Size : 16 megabytes
+ Size : 16 mibibytes
Chip : One Intel 28F128J3A (StrataFlash)
CS : MPC860T CS0*/GPCM (this is the "boot" chip select)
Filesystem memory:
Type : NAND FLASH (Toshiba)
Width : 8 bits (i.e. interface to DOC is 8 bits)
- Size : 32 megabytes
+ Size : 32 mibibytes
Chip : One DiskOnCHip Millenium Plus (DOC 2000+)
CS : MPC860T CS2*/GPCM
Mil-Std 1553 databus interface on CS5*/GPCM.
Audio sounder (beeper) with digital volume control connected to SPKROUT.
+SC variant:
+ A reduced-feature version of the GEN860T port is also supported: GEN860T_SC.
+ The 'SC' variant only provides support for the Virtex FPGA, SDRAM main
+ memory, EEPROM and flash memory. The system clock frequency is reduced
+ to 24 MHz.
+
Issues:
The DOC 2000+ returns 0x40 as its device ID when probed using the method
desxribed in the DOC datasheet. Unfortunately, the U-Boot DOC driver
in MTD for this device. I wish I had known this sooner :(
The GEN860T board specific files and configuration is based on the work
-of others who have contributed to U-Boot. The copright and license notices
+of others who have contributed to U-Boot. The copyright and license notices
of these authors have been retained wherever their code has been reused.
All new code to support the GEN860T board is:
- (C) Copyright 2001-2002
+ (C) Copyright 2001-2003
Keith Outwater (keith_outwater@mvis.com)
and the following license applies:
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of
-the License, or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-MA 02111-1307 USA
+SPDX-License-Identifier: GPL-2.0+
Thanks to Wolfgang Denk for a great software package and to everyone
who contributed to its development.
Microvision, Inc.
<keith_outwater@mvis.com>
<outwater@eskimo.com>
-
-vim: set ts=4 sw=4 tw=78:
-
projects / platform / kernel / u-boot.git / blobdiff