board/bmw/README

Broadcom 95xx BMW CPCI Platform

Overview
=========
BMW is an MPC8245 system controller featuring:
* 3U CPCI Form Factor
* BCM5703 Gigabit Ethernet
* M48T59Y NVRAM
* 16MB DOC
* DIP Socket for Socketed DOC up to 1GB
* 64MB SDRAM
* LCD Display
* Configurable Jumper options for 66,85, and 100Mhz memory bus


BMW System Address Map
======================
BMW uses the MPC8245 CHRP Address MAP B found in the MPC8245 Users Manual
(P.121, Section 3.1 Address Maps, Address Map B). Other I/O devices found
onboard the processor module are listed briefly below:

0x00000000 - 0x40000000 - 64MB SDRAM SIMM
			  (Unregistered PC-100 SDRAM DIMM Module)

0xFF000000 - 0xFF001FFF - M-Systems DiskOnChip (TM) 2000
			  TSOP 16MB (MD2211-D16-V3)

0x70000000 - 0x70001FFF - M-Systems DiskOnChip (TM) 2000
			  DIP32 (Socketed 16MB - 1GB ) *
			  NOTE: this is not populated on all systems.

0x7c000000 - 0x7c000000 - Reset Register
			  (Write 0 to reset)

0x7c000001 - 0x7c000001 - System LED
			  (Clear Bit 7 to turn on, set to shut off)

0x7c000002 - 0x7c000002 - M48T59 Watchdog IRQ3
			  (Clear bit 7 to reset, set to assert IRQ3)

0x7c000003 - 0x7c000003 - M48T59 Write-Protect Register
			  (Clear bit 7 to make R/W, set to make R/O)

0x7c002000 - 0x7c002003 - Infineon OSRAM DLR2416 4 Character
			  5x7 Dot Matrix Alphanumeric Display
			  (Each byte sets the appropriate character)

0x7c004000 - 0x7c005FF0 - SGS-THOMSON M48T59Y 8K NVRAM/RTC
			  NVRAM Memory Region

0x7c005FF0 - 0x7c005FFF - SGS-THOMSON M48T59Y 8K NVRAM/RTC
			  Realtime Clock Registers

0xFFF00000 - 0xFFF80000 - 512K PLCC32 BootRom
			  (AMD AM29F040, ST 29W040B)

0xFFF00100 -              System Reset Vector


IO/MMU (BAT) Configuration
======================
The following Block-Address-Translation (BAT) configuration
is recommended to access all I/O devices.

#define CFG_IBAT0L  (0x00000000 | BATL_PP_10 | BATL_MEMCOHERENCE)
#define CFG_IBAT0U  (0x00000000 | BATU_BL_256M | BATU_VS | BATU_VP)

#define CFG_IBAT1L  (0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT)
#define CFG_IBAT1U  (0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP)

#define CFG_IBAT2L  (0x80000000 | BATL_PP_10 | BATL_CACHEINHIBIT)
#define CFG_IBAT2U  (0x80000000 | BATU_BL_256M | BATU_VS | BATU_VP)

#define CFG_IBAT3L  (0xF0000000 | BATL_PP_10 | BATL_CACHEINHIBIT)
#define CFG_IBAT3U  (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)

#define CFG_DBAT0L  CFG_IBAT0L
#define CFG_DBAT0U  CFG_IBAT0U
#define CFG_DBAT1L  CFG_IBAT1L
#define CFG_DBAT1U  CFG_IBAT1U
#define CFG_DBAT2L  CFG_IBAT2L
#define CFG_DBAT2U  CFG_IBAT2U
#define CFG_DBAT3L  CFG_IBAT3L
#define CFG_DBAT3U  CFG_IBAT3U


Interrupt Mappings
======================
BMW uses MPC8245 discrete mode interrupts. With the following
hardwired mappings:

BCM5701 10/100/1000 Ethernet		IRQ1
CompactPCI Interrupt A			IRQ2
RTC/Watchdog Interrupt			IRQ3
Internal NS16552 UART			IRQ4


Jumper Settings
======================

BMW has a jumper (JP600) for selecting 66, 85, or 100Mhz memory bus.
A jumper (X) is a 0 bit.

Hence 66= 10110
      85= 11000
     100= 10000

Jumper Settings for various Speeds
=======================
J1 J2 J3 J4 J5
    X        X    66Mhz
=======================
J1 J2 J3 J4 J5
       X  X  X    85Mhz
=======================
J1 J2 J3 J4 J5
    X  X  X  X   100Mhz
=======================

Obviously, 100Mhz memory bus is recommended for optimum performance.


U-Boot
===============
Broadcom BMW board is supported under config_BWM option.
Supported features:

- NVRAM setenv/getenv (used by Linux Kernel for configuration variables)
- BCM570x TFTP file transfer support
- LCD Display Support
- DOC Support - (underway)


U-Boot 1.2.0 (Aug  6 2002 - 17:44:48)

CPU:   MPC8245 Revision 16.20 at 264 MHz: 16 kB I-Cache 16 kB D-Cache
Board: BMW MPC8245/KAHLUA2 - CHRP (MAP B)
Built: Aug  6 2002 at 17:44:37
Local Bus at 66 MHz
DRAM:  64 MB
FLASH: 4095 MB
In:    serial
Out:   serial
Err:   serial
DOC:   No DiskOnChip found
Hit any key to stop autoboot:  0
=>printenv
bootdelay=5
baudrate=9600
clocks_in_mhz=1
hostname=switch-2
bootcmd=tftp 100000 vmlinux.img;bootm
gateway=10.16.64.1
ethaddr=00:00:10:18:10:10
nfsroot=172.16.40.111:/boot/root-fs
filesize=5ec8c
netmask=255.255.240.0
ipaddr=172.16.40.114
serverip=172.16.40.111
root=/dev/nfs
stdin=serial
stdout=serial
stderr=serial

Environment size: 315/8172 bytes
=>boot


DevTools
========
ELDK
	DENX Embedded Linux Development Kit

ROM Emulator
	Grammar Engine PROMICE P1160-90-AI21E (2MBx8bit, 90ns access time)
	Grammar Engine PL32E 32Pin PLCC Emulation cables
	Grammar Engine 3VA8CON (3Volt adapter with Short cables)
	Grammar Engine FPNET PromICE Ethernet Adapters

ICE
	WRS/EST VisionICE-II (PPC8240)


=>reset


U-Boot 1.2.0 (Aug  6 2002 - 17:44:48)

CPU:   MPC8245 Revision 16.20 at 264 MHz: 16 kB I-Cache 16 kB D-Cache
Board: BMW MPC8245/KAHLUA2 - CHRP (MAP B)
Built: Aug  6 2002 at 17:44:37
Local Bus at 66 MHz
DRAM:  64 MB
FLASH: 4095 MB
In:    serial
Out:   serial
Err:   serial
DOC:   No DiskOnChip found
Hit any key to stop autoboot:  0

Broadcom BCM5701 1000Base-T: bus 0, device 13, function 0: MBAR=0x80100000
BCM570x PCI Memory base address @0x80100000
eth0:Broadcom BCM5701 1000Base-T: 100 Mbps half duplex link up, flow control OFF
eth0: Broadcom BCM5701 1000Base-T @0x80100000,node addr 000010181010
eth0: BCM5700 with Broadcom BCM5701 Integrated Copper transceiver found
eth0: 32-bit PCI 33MHz, MTU: 1500,Rx Checksum ON
ARP broadcast 1
TFTP from server 172.16.40.111; our IP address is 172.16.40.114
Filename 'vmlinux.img'.
Load address: 0x100000
Loading: #################################################################
	 ####################################T #############################
	 ######################
done
Bytes transferred = 777199 (bdbef hex)

eth0:Broadcom BCM5701 1000Base-T,HALT,POWER DOWN,done - offline.
## Booting image at 00100000 ...
   Image Name:   vmlinux.bin.gz
   Created:      2002-08-06   6:30:13 UTC
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    777135 Bytes = 758 kB = 0 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb
Linux version 2.4.19-rc3 (jfd@que) (gcc version 2.95.3 20010111 (prerelease/franzo/20010111)) #168 Mon Aug 5 23:29:20 PDT 2002
CPU:82xx: 32 I-Cache Block Size, 32 D-Cache Block Size PVR: 0x810000
U-Boot Environment: 0xc01b08f0
IP PNP: 802.3 Ethernet Address=<0:0:10:18:10:10>
cpu0: MPC8245/KAHLUA-II : BMW Platform : 64MB RAM: BPLD Rev. 6e
NOTICE: mounting root file system via NFS
IP PNP: switch-2: eth0 IP 172.16.40.114/255.255.240.0 gateway 10.16.64.1 server 172.16.40.111
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: console=ttyS0,9600 ip=172.16.40.114:172.16.40.111:10.16.64.1:255.255.240.0:switch-2:eth0 root=/dev/nfs rw nfsroot=172.16.40.111:/boot/root-fs,timeo=200,retrans=500 nfsaddrs=172.16.40.114:172.16.40.111
root_dev_setup:/dev/nfs or 00:ff
time_init: decrementer frequency = 16.501145 MHz
Calibrating delay loop... 175.71 BogoMIPS
Memory: 62572k available (1396k kernel code, 436k data, 100k init, 0k highmem)
Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
Inode cache hash table entries: 4096 (order: 3, 32768 bytes)
Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
POSIX conformance testing by UNIFIX
PCI: Probing PCI hardware
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
devfs: v1.12a (20020514) Richard Gooch (rgooch@atnf.csiro.au)
devfs: devfs_debug: 0x0
devfs: boot_options: 0x1
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
Testing ttyS0 (0xf7f51500, 0xf7f51500)...
Testing ttyS1 (0xfc004600, 0xfc004600)...
ttyS00 at 0xf7f51500 (irq = 24) is a ST16650
ttyS01 at 0xfc004600 (irq = 25) is a 16550A
Real Time Clock Driver v1.10e
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
TFFS 5.1.1 Flash disk driver for DiskOnChip
Copyright (C) 1998,2001 M-Systems Flash Disk Pioneers Ltd.
DOC device(s) found: 1
fl_init: registered device at major: 100
fl_geninit: registered device at major: 100
Partition check:
 fla: p1
partition: /dev/fl/0: start_sect: 0,nr_sects: 32000 Fl_blk_size[]: 16000KB
partition: /dev/fl/1: start_sect: 2,nr_sects: 31998 Fl_blk_size[]: 15999KB
partition: /dev/fl/2: start_sect: 0,nr_sects: 0 Fl_blk_size[]: 0KB
partition: /dev/fl/3: start_sect: 0,nr_sects: 0 Fl_blk_size[]: 0KB
Broadcom Gigabit Ethernet Driver bcm5700 ver. 3.0.7 (07/17/02)
eth0: Broadcom BCM5701 found at mem bfff0000, IRQ 1, node addr 000010181010
eth0: Broadcom BCM5701 Integrated Copper transceiver found
eth0: Scatter-gather ON, 64-bit DMA ON, Tx Checksum ON, Rx Checksum ON, 802.1Q VLAN ON
bond0 registered without MII link monitoring, in bonding mode.
rtc: unable to get misc minor
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 4096 bind 4096)
bcm5700: eth0 NIC Link is UP, 100 Mbps half duplex
IP-Config: Gateway not on directly connected network.
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
802.1Q VLAN Support v1.7 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
Looking up port of RPC 100003/2 on 172.16.40.111
Looking up port of RPC 100005/1 on 172.16.40.111
VFS: Mounted root (nfs filesystem).
Mounted devfs on /dev
Freeing unused kernel memory: 100k init
INIT: version 2.78 booting
Mounting local filesystems...
not mounted anything
Setting up symlinks in /dev...done.
Setting up extra devices in /dev...done.
Starting devfsd...Started device management daemon for /dev
INIT: Entering runlevel: 2
Starting internet superserver: inetd.


Welcome to Linux/PPC
MPC8245/BMW


switch-2 login: root
Password:
PAM_unix[49]: (login) session opened for user root by LOGIN(uid=0)
Last login: Thu Nov 25 11:51:14 1920 on console


Welcome to Linux/PPC
MPC8245/BMW


login[49]: ROOT LOGIN on `console'

root@switch-2:~# cat /proc/cpuinfo
cpu             : 82xx
revision        : 16.20 (pvr 8081 1014)
bogomips        : 175.71
vendor          : Broadcom
machine         : BMW/MPC8245
root@switch-2:~#