188 lines
5.2 KiB
Plaintext
188 lines
5.2 KiB
Plaintext
|
Motorola MPC85xxCDS boards
|
||
|
|
--------------------------
|
||
|
|
|
||
|
|
The CDS family of boards consists of a PCI backplane called the
|
||
|
|
"Arcadia", a PCI-form-factor carrier card that plugs into a PCI slot,
|
||
|
|
and a CPU daughter card that bolts onto the daughter card.
|
||
|
|
|
||
|
|
Much of the content of the README.mpc85xxads for the 85xx ADS boards
|
||
|
|
applies to the 85xx CDS boards as well. In particular the toolchain,
|
||
|
|
the switch nomenclature, and the basis for the memory map. There are
|
||
|
|
some differences, though.
|
||
|
|
|
||
|
|
|
||
|
|
Building U-Boot
|
||
|
|
---------------
|
||
|
|
|
||
|
|
The Binutils in current ELDK toolchain will not support MPC85xx
|
||
|
|
chip. You need to use binutils-2.14.tar.bz2 (or newer) from
|
||
|
|
http://ftp.gnu.org/gnu/binutils.
|
||
|
|
|
||
|
|
The 85xx CDS code base is known to compile using:
|
||
|
|
gcc (GCC) 3.2.2 20030217 (Yellow Dog Linux 3.0 3.2.2-2a)
|
||
|
|
|
||
|
|
|
||
|
|
Memory Map
|
||
|
|
----------
|
||
|
|
|
||
|
|
The memory map for u-boot and linux has been extended w.r.t. the ADS
|
||
|
|
platform to allow for utilization of all 85xx CDS devices. The memory
|
||
|
|
map is setup for linux to operate properly. The linux source when
|
||
|
|
configured for MPC85xx CDS has been updated to reflect the new memory
|
||
|
|
map.
|
||
|
|
|
||
|
|
The mapping is:
|
||
|
|
|
||
|
|
0x0000_0000 0x7fff_ffff DDR 2G
|
||
|
|
0x8000_0000 0x9fff_ffff PCI1 MEM 512M
|
||
|
|
0xa000_0000 0xbfff_ffff PCI2 MEM 512M
|
||
|
|
0xe000_0000 0xe00f_ffff CCSR 1M
|
||
|
|
0xe200_0000 0xe2ff_ffff PCI1 IO 16M
|
||
|
|
0xe300_0000 0xe3ff_ffff PCI2 IO 16M
|
||
|
|
0xf000_0000 0xf7ff_ffff SDRAM 128M
|
||
|
|
0xf800_0000 0xf80f_ffff NVRAM/CADMUS (*) 1M
|
||
|
|
0xff00_0000 0xff7f_ffff FLASH (2nd bank) 8M
|
||
|
|
0xff80_0000 0xffff_ffff FLASH (boot bank) 8M
|
||
|
|
|
||
|
|
(*) The system control registers (CADMUS) start at offset 0xfdb0_4000
|
||
|
|
within the NVRAM/CADMUS region of memory.
|
||
|
|
|
||
|
|
|
||
|
|
Using Flash
|
||
|
|
-----------
|
||
|
|
|
||
|
|
The CDS board has two flash banks, each 8MB in size (2^23 = 0x00800000).
|
||
|
|
There is a switch which allows the boot-bank to be selected. The switch
|
||
|
|
settings for updating flash are given below.
|
||
|
|
|
||
|
|
The u-boot commands for copying the boot-bank into the secondary bank are
|
||
|
|
as follows:
|
||
|
|
|
||
|
|
erase ff780000 ff7fffff
|
||
|
|
cp.b fff80000 ff780000 80000
|
||
|
|
|
||
|
|
|
||
|
|
U-boot/kermit commands for downloading an image, then copying
|
||
|
|
it into the secondary bank:
|
||
|
|
|
||
|
|
loadb
|
||
|
|
[Drop to kermit:
|
||
|
|
^\c
|
||
|
|
send <u-boot-bin-image>
|
||
|
|
c
|
||
|
|
]
|
||
|
|
|
||
|
|
erase ff780000 ff7fffff
|
||
|
|
cp.b $loadaddr ff780000 80000
|
||
|
|
|
||
|
|
|
||
|
|
U-boot commands for downloading an image via tftp and flashing
|
||
|
|
it into the second bank:
|
||
|
|
|
||
|
|
tftp 10000 <u-boot.bin.image>
|
||
|
|
erase ff780000 ff7fffff
|
||
|
|
cp.b 10000 ff780000 80000
|
||
|
|
|
||
|
|
|
||
|
|
After copying the image into the second bank of flash, be sure to toggle
|
||
|
|
SW2[2] on the carrier card before resetting the board in order to set the
|
||
|
|
secondary bank as the boot-bank.
|
||
|
|
|
||
|
|
|
||
|
|
Carrier Board Switches
|
||
|
|
----------------------
|
||
|
|
|
||
|
|
As a reminder, you should read the README.mpc85xxads too.
|
||
|
|
|
||
|
|
Most switches on the carrier board should not be changed. The only
|
||
|
|
user-settable switches on the carrier board are used to configure
|
||
|
|
the flash banks and determining the PCI slot.
|
||
|
|
|
||
|
|
The first two bits of SW2 control how flash is used on the board:
|
||
|
|
|
||
|
|
12345678
|
||
|
|
--------
|
||
|
|
SW2=00XXXXXX FLASH: Boot bank 1, bank 2 available.
|
||
|
|
01XXXXXX FLASH: Boot bank 2, bank 1 available (swapped).
|
||
|
|
10XXXXXX FLASH: Boot promjet, bank 1 available
|
||
|
|
11XXXXXX FLASH: Boot promjet, bank 2 available
|
||
|
|
|
||
|
|
The boot bank is always mapped to FF80_0000 and listed first by
|
||
|
|
the "flinfo" command. The secondary bank is always FF00_0000.
|
||
|
|
|
||
|
|
When using PCI, linux needs to know to which slot the CDS carrier is
|
||
|
|
connected.. By convention, the user-specific bits of SW2 are used to
|
||
|
|
convey this information:
|
||
|
|
|
||
|
|
12345678
|
||
|
|
--------
|
||
|
|
SW2=xxxxxx00 PCI SLOT INFORM: The CDS carrier is in slot0 of the Arcadia
|
||
|
|
xxxxxx01 PCI SLOT INFORM: The CDS carrier is in slot1 of the Arcadia
|
||
|
|
xxxxxx10 PCI SLOT INFORM: The CDS carrier is in slot2 of the Arcadia
|
||
|
|
xxxxxx11 PCI SLOT INFORM: The CDS carrier is in slot3 of the Arcadia
|
||
|
|
|
||
|
|
These are cleverly, er, clearly silkscreened as Slot 1 through 4,
|
||
|
|
respectively, on the Arcadia near the support posts.
|
||
|
|
|
||
|
|
|
||
|
|
The default setting of all switches on the carrier board is:
|
||
|
|
|
||
|
|
12345678
|
||
|
|
--------
|
||
|
|
SW1=01101100
|
||
|
|
SW2=0x1111yy x=Flash bank, yy=PCI slot
|
||
|
|
SW3=11101111
|
||
|
|
SW4=10001000
|
||
|
|
|
||
|
|
|
||
|
|
CPU Card Switches
|
||
|
|
-----------------
|
||
|
|
|
||
|
|
Most switches on the CPU Card should not be changed. However, the
|
||
|
|
frequency can be changed by setting SW3:
|
||
|
|
|
||
|
|
12345678
|
||
|
|
--------
|
||
|
|
SW3=XX00XXXX == CORE:CCB 2:1
|
||
|
|
XX01XXXX == CORE:CCB 5:2
|
||
|
|
XX10XXXX == CORE:CCB 3:1
|
||
|
|
XX11XXXX == CORE:CCB 7:2
|
||
|
|
XXXX1000 == CCB:SYSCLK 8:1
|
||
|
|
XXXX1010 == CCB:SYSCLK 10:1
|
||
|
|
|
||
|
|
A safe default setting for all switches on the CPU board is:
|
||
|
|
|
||
|
|
12345678
|
||
|
|
--------
|
||
|
|
SW1=10001111
|
||
|
|
SW2=01000111
|
||
|
|
SW3=00001000
|
||
|
|
SW4=11111110
|
||
|
|
|
||
|
|
|
||
|
|
eDINK Info
|
||
|
|
----------
|
||
|
|
|
||
|
|
One bank of flash may contain an eDINK image.
|
||
|
|
|
||
|
|
Memory Map:
|
||
|
|
|
||
|
|
CCSRBAR @ 0xe0000000
|
||
|
|
Flash Bank 1 @ 0xfe000000
|
||
|
|
Flash Bank 2 @ 0xff000000
|
||
|
|
Ram @ 0
|
||
|
|
|
||
|
|
Commands for downloading a u-boot image to memory from edink:
|
||
|
|
|
||
|
|
env -c
|
||
|
|
time -s 4/8/2004 4:30p
|
||
|
|
dl -k -b -o 100000
|
||
|
|
[Drop to kermit:
|
||
|
|
^\c
|
||
|
|
transmit /binary <u-boot-bin-image>
|
||
|
|
c
|
||
|
|
]
|
||
|
|
|
||
|
|
fu -l 100000 fe780000 80000
|
||
|
|
|