u-boot/doc/README.mpc85xxads

Motorola MPC8540ADS and MPC8560ADS board

Created 10/15/03 Xianghua Xiao
Updated 13-July-2004 Jon Loeliger
-----------------------------------------

0. Toolchain

    The Binutils in current ELDK toolchain will not support MPC85xx
    chip.  You need use the newest binutils-2.14.tar.bz2 from
    http://ftp.gnu.org/gnu/binutils.

    The 8540/8560 ADS code base is known to compile using:
	gcc (GCC) 3.2.2 20030217 (Yellow Dog Linux 3.0 3.2.2-2a)


1. SWITCH SETTINGS & JUMPERS

1.0 Nomenclature

    For some reason, the HW designers describe the switch settings
    in terms of 0 and 1, and then map that to physical switches where
    the label "On" refers to logic 0 and "Off" (unlabeled) is logic 1.
    Luckily, we're SW types and virtual settings are handled daily.

    The switches for the Rev A board are numbered differently than
    for the Pilot board.  Oh yeah.

    Switch bits are numbered 1 through, like, 4 6 8 or 10, but the
    bits may contribute to signals that are numbered based at 0,
    and some of those signals may be high-bit-number-0 too.  Heed
    well the names and labels and do not get confused.

    "Off" == 1
    "On"  == 0

    SW18 is switch 18 as silk-screened onto the board.
    SW4[8] is the bit labled 8 on Switch 4.
    SW2[1:6] refers to bits labeled 1 through 6 in order on switch 2
    SW3[7:1] refers to bits labeled 7 through 1 in order on switch 3

1.1 For the MPC85xxADS Pilot Board

    First, make sure the board default setting is consistent with the document
    shipped with your board. Then apply the following changes:
    SW3[1-6]="all OFF"	(boot from 32bit flash, no boot sequence is used)
    SW10[2-6]="all OFF" (turn on CPM SCC for serial port,works for 8540/8560)
    SW11[2]='OFF for 8560, ON for 8540' (toggle 8540.8560 mode)
    SW11[7]='ON' (rev2), 'OFF' (rev1)
    SW4[7-8]="OFF OFF" (enable serial ports,I'm using the top serial connector)
    SW22[1-4]="OFF OFF ON OFF"
    SW5[1-10[="ON ON OFF OFF OFF OFF OFF OFF OFF OFF"
    J1 = "Enable Prog" (Make sure your flash is programmable for development)

    If you want to test PCI functionality with a 33Mhz PCI card, you will
    have to change the system clock from the default 66Mhz to 33Mhz by
    setting SW15[1]="OFF" and SW17[8]="OFF". After that you may also need
    double your platform clock(SW6) because the system clock is now only
    half of its original value. For example, if at 66MHz your system
    clock showed SW6[0:1] = 01, then at 33MHz SW6[0:1] it should be 10.

	SW17[8] ------+	   SW6
	SW15[1] ----+ |	  [0:1]
		    V V	   V V
	33MHz	    1 1	   1 0
	66MHz	    0 0	   0 1

    Hmmm... That SW6 setting description is incomplete but it works.


1.3 For the MPC85xxADS Rev A Board

    As shipped, the board should be a 33MHz PCI bus with a CPU Clock
    rate of 825 +/- fuzz:

	Clocks: CPU: 825 MHz, CCB: 330 MHz, DDR: 165 MHz, LBC:	82 MHz

    For 33MHz PCI, the switch settings should be like this:

	SW18[7:1] = 0100001 = M==33 =>	  33MHz
	SW18[8]	  =	  1	    => PWD Divider == 16
	SW16[1:2] =	 11	    => N == 16 as PWD==1

    Use the magical formula:
	Fout (MHz) = 16 * M / N = 16 * 33 / 16 = 33 MHz

	SW7[1:4]  =    1010 = 10    => 10 x 33	 = 330	CCB Sysclk
	SW7[5:6]  =	 01	    => 5:2 x 330 = 825	Core clock


    For 66MHz PCI, the switch settings should be like this:

	SW18[7:1] = 0100001 = M==33 =>	  33MHz
	SW18[8]	  =	  0	    => PWD Divider == 1
	SW16[1:2] =	 01	    => N == 8 as PWD == 0

    Use the magical formula:
	Fout (MHz) = 16 * M / N = 16 * 33 / 8 = 66 MHz

	SW7[1:4]  =    0101 =  5    => 5 x 66	 = 330	CCB Sysclk
	SW7[5:6]  =	 01	    => 5:2 x 330 = 825	Core clock


2. MEMORY MAP TO WORK WITH LINUX KERNEL

2.1. For the initial bringup, we adopted a consistent memory scheme
     between u-boot and linux kernel, you can customize it based on your
     system requirements:

     0x0000_0000     0x7fff_ffff     DDR		     2G
     0x8000_0000     0x9fff_ffff     PCI MEM		     512M
     0xc000_0000     0xdfff_ffff     Rapid IO		     512M
     0xe000_0000     0xe00f_ffff     CCSR		     1M
     0xe200_0000     0xe2ff_ffff     PCI IO		     16M
     0xf000_0000     0xf7ff_ffff     SDRAM		     128M
     0xf800_0000     0xf80f_ffff     BCSR		     1M
     0xff00_0000     0xffff_ffff     FLASH (boot bank)	     16M

2.2 We are submitting Linux kernel patches for MPC8540 and MPC8560. You
    can download them from linuxppc-2.4 public source. Please make sure the
    kernel's ppcboot.h is consistent with U-Boot's u-boot.h. You can use two
    default configuration files as your starting points to configure the
    kernel:
	arch/ppc/configs/mpc8540_ads_defconfig
	arch/ppc/configs/mpc8560_ads_defconfig

3. DEFINITIONS AND COMPILATION

3.1 Explanation on NEW definitions in:
	include/configs/MPC8540ADS.h
	include/configs/MPC8560ADS.h

    CONFIG_BOOKE	    BOOKE(e.g. Motorola MPC85xx, IBM 440, etc)
    CONFIG_E500		    BOOKE e500 family(Motorola)
    CONFIG_MPC85xx	    MPC8540,MPC8560 and their derivatives
    CONFIG_MPC8540	    MPC8540 specific
    CONFIG_MPC8560	    MPC8560 specific
    CONFIG_MPC8540ADS	    MPC8540ADS board specific
    CONFIG_MPC8560ADS	    MPC8560ADS board specific
    CONFIG_TSEC_ENET	    Use on-chip 10/100/1000 ethernet for networking
    CONFIG_SPD_EEPROM	    Use SPD EEPROM for DDR auto configuration, you can
			    also manual config the DDR after undef this
			    definition.
    CONFIG_DDR_ECC	    only for ECC DDR module
    CONFIG_DDR_DLL	    DLL fix on some ADS boards needed for more
			    stability.

Other than the above definitions, the rest in the config files are
straightforward.


3.2 Compilation

    Assuming you're using BASH shell:

	export CROSS_COMPILE=your-cross-compile-prefix
	cd u-boot
	make distclean
	make MPC8560ADS_config (or make MPC8540ADS_config)
	make

4.  Notes:

4.1 When connecting with kermit, the following commands must be present.in
    your .kermrc file. These are especially important when booting as
    MPC8560, as the serial console will not work without them:

	set speed 115200
	set carrier-watch off
	set handshake none
	set flow-control none
	robust


4.2 Sometimes after U-Boot is up, the 'tftp' won't work well with TSEC
    ethernet. If that happens, you can try the following steps to make
    network work:

	MPC8560ADS>tftp 1000000 pImage
	(if it hangs, use Ctrl-C to quit)
	MPC8560ADS>nm fdf24524
	>0
	>1
	>. (to quit this memory operation)
	MPC8560ADS>tftp 1000000 pImage

4.3 If you're one of the early developers using the Rev1 8540/8560 chips,
    please use U-Boot 1.0.0, as the newer silicon will only support Rev2
    and future revisions of 8540/8560.


4.4 Reflash U-boot Image using U-boot

    => tftp 0 u-boot.bin
    => protect off fff80000 ffffffff
    => erase fff80000 ffffffff
    => cp.b 0 fff80000 80000


4.5 Reflash U-Boot with a BDI-2000

    BDI> erase 0xFFF80000 0x4000 0x20
    BDI> prog 0xfff80000 u-boot.bin.8560ads
    BDI> verify


5. Screen dump MPC8540ADS board

U-Boot 1.1.2(pq3-20040707-0) (Jul  6 2004 - 17:34:25)

Freescale PowerPC
    Core: E500, Version: 2.0, (0x80200020)
    System: 8540, Version: 2.0, (0x80300020)
    Clocks: CPU: 825 MHz, CCB: 330 MHz, DDR: 165 MHz, LBC:  82 MHz
    L1 D-cache 32KB, L1 I-cache 32KB enabled.
Board: ADS
    PCI1: 32 bit, 66 MHz (compiled)
I2C:   ready
DRAM:  Initializing
    SDRAM: 64 MB
    DDR: 256 MB
FLASH: 16 MB
L2 cache enabled: 256KB
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   MOTO ENET0: PHY is Marvell 88E1011S (1410c62)
MOTO ENET1: PHY is Marvell 88E1011S (1410c62)
MOTO ENET2: PHY is Davicom DM9161E (181b881)
MOTO ENET0, MOTO ENET1, MOTO ENET2
Hit any key to stop autoboot:  0
=>
=> fli

Bank # 1: Intel 28F640J3A (64 Mbit, 64 x 128K)
  Size: 16 MB in 64 Sectors
  Sector Start Addresses:
    FF000000	  FF040000	FF080000      FF0C0000	    FF100000
    FF140000	  FF180000	FF1C0000      FF200000	    FF240000
    FF280000	  FF2C0000	FF300000      FF340000	    FF380000
    FF3C0000	  FF400000	FF440000      FF480000	    FF4C0000
    FF500000	  FF540000	FF580000      FF5C0000	    FF600000
    FF640000	  FF680000	FF6C0000      FF700000	    FF740000
    FF780000	  FF7C0000	FF800000      FF840000	    FF880000
    FF8C0000	  FF900000	FF940000      FF980000	    FF9C0000
    FFA00000	  FFA40000	FFA80000      FFAC0000	    FFB00000
    FFB40000	  FFB80000	FFBC0000      FFC00000	    FFC40000
    FFC80000	  FFCC0000	FFD00000      FFD40000	    FFD80000
    FFDC0000	  FFE00000	FFE40000      FFE80000	    FFEC0000
    FFF00000	  FFF40000	FFF80000 (RO) FFFC0000 (RO)

=> bdinfo
memstart    = 0x00000000
memsize	    = 0x10000000
flashstart  = 0xFF000000
flashsize   = 0x01000000
flashoffset = 0x00000000
sramstart   = 0x00000000
sramsize    = 0x00000000
immr_base   = 0xE0000000
bootflags   = 0xE4013F80
intfreq	    =	 825 MHz
busfreq	    =	 330 MHz
ethaddr	    = 00:E0:0C:00:00:FD
eth1addr    = 00:E0:0C:00:01:FD
eth2addr    = 00:E0:0C:00:02:FD
IP addr	    = 192.168.1.253
baudrate    = 115200 bps


=> printenv
bootcmd=setenv bootargs root=/dev/nfs rw nfsroot=$serverip:$rootpath ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname:$netdev:off console=$consoledev,$baudrate $othbootargs;tftp $loadaddr $bootfile;bootm $loadaddr
ramboot=setenv bootargs root=/dev/ram rw console=$consoledev,$baudrate $othbootargs;tftp $ramdiskaddr $ramdiskfile;tftp $loadaddr $bootfile;bootm $loadaddr $ramdiskaddr
nfsboot=setenv bootargs root=/dev/nfs rw nfsroot=$serverip:$rootpath ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname:$netdev:off console=$consoledev,$baudrate $othbootargs;tftp $loadaddr $bootfile;bootm $loadaddr
bootdelay=10
baudrate=115200
loads_echo=1
ethaddr=00:E0:0C:00:00:FD
eth1addr=00:E0:0C:00:01:FD
eth2addr=00:E0:0C:00:02:FD
ipaddr=192.168.1.253
serverip=192.168.1.1
rootpath=/nfsroot
gatewayip=192.168.1.1
netmask=255.255.255.0
hostname=unknown
bootfile=your.uImage
loadaddr=200000
netdev=eth0
consoledev=ttyS0
ramdiskaddr=400000
ramdiskfile=your.ramdisk.u-boot
stdin=serial
stdout=serial
stderr=serial
ethact=MOTO ENET0

Environment size: 1020/8188 bytes