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Freescale MPC8641HPCN board
===========================
Created 05/24/2006 Haiying Wang
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1. Building U-Boot
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The 86xx HPCN code base is known to compile using:
Binutils 2.15, Gcc 3.4.3, Glibc 2.3.3
$ make MPC8641HPCN_config
Configuring for MPC8641HPCN board...
$ make
2. Switch and Jumper Setting
----------------------------
Jumpers:
J14 Pins 1-2 (near plcc32 socket)
Switches:
SW1(1-5) = 01100 CFG_COREPLL = 01000 :: CORE = 2:1
01100 :: CORE = 2.5:1
10000 :: CORE = 3:1
11100 :: CORE = 3.5:1
10100 :: CORE = 4:1
01110 :: CORE = 4.5:1
SW1(6-8) = 001 CFG_SYSCLK = 000 :: SYSCLK = 33MHz
001 :: SYSCLK = 40MHz
0100 :: 4X
0110 :: 6X
1000 :: 8X
1010 :: 10X
1100 :: 12X
1110 :: 14X
0000 :: 16X
SW2(5-8) = 1110 CFG_BOOTLOC = 1110 :: boot 16-bit localbus
SW3(1-7) = 0011000 CFG_VID = 0011000 :: VCORE = 1.2V
0100000 :: VCORE = 1.11V
SW3(8) = 0 VCC_PLAT = 0 :: VCC_PLAT = 1.2V
1 :: VCC_PLAT = 1.0V
SW4(1-2) = 11 CFG_HOSTMODE = 11 :: both prots host/root
SW4(3-4) = 11 CFG_BOOTSEQ = 11 :: no boot seq
SW4(5-8) = 0011 CFG_IOPORT = 0011 :: both PEX
SW5(1) = 1 CFG_FLASHMAP = 1 :: boot from flash
0 :: boot from PromJet
SW5(2) = 1 CFG_FLASHBANK = 1 :: swap upper/lower
halves (virtual banks)
0 :: normal
SW5(3) = 0 CFG_FLASHWP = 0 :: not protected
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1:1 for PD6
SW5(5-6) = 11 CFG_PIXISOPT = 11 :: s/w determined
SW5(7-8) = 11 CFG_LADOPT = 11 :: s/w determined
SW6(1) = 1 CFG_CPUBOOT = 1 :: no boot holdoff
SW6(2) = 1 CFG_BOOTADDR = 1 :: no traslation
SW6(3-5) = 000 CFG_REFCLKSEL = 000 :: 100MHZ
SW6(6) = 1 CFG_SERROM_ADDR= 1 ::
SW6(7) = 1 CFG_MEMDEBUG = 1 ::
SW6(8) = 1 CFG_DDRDEBUG = 1 ::
SW8(1) = 1 ACZ_SYNC = 1 :: 48MHz on TP49
SW8(2) = 1 ACB_SYNC = 1 :: THRMTRIP disabled
SW8(3) = 1 ACZ_SDOUT = 1 :: p4 mode
SW8(4) = 1 ACB_SDOUT = 1 :: PATA freq. = 133MHz
SW8(5) = 0 SUSLED = 0 :: SouthBridge Mode
SW8(6) = 0 SPREAD = 0 :: REFCLK SSCG Disabled
SW8(7) = 1 ACPWR = 1 :: non-battery
SW8(8) = 0 CFG_IDWP = 0 :: write enable
3. Flash U-Boot
---------------
The flash range 0xFF800000 to 0xFFFFFFFF can be divided into 2 halves.
It is possible to use either half to boot using u-boot. Switch 5 bit 2
is used for this purpose.
0xFF800000 to 0xFFBFFFFF - 4MB
0xFFC00000 to 0xFFFFFFFF - 4MB
When this bit is 0, U-Boot is at 0xFFF00000.
When this bit is 1, U-Boot is at 0xFFB00000.
Use the above mentioned flash commands to program the other half, and
use switch 5, bit 2 to alternate between the halves. Note: The booting
version of U-Boot will always be at 0xFFF00000.
To Flash U-Boot into the booting bank (0xFFC00000 - 0xFFFFFFFF):
tftp 1000000 u-boot.bin
protect off all
erase fff00000 +$filesize
cp.b 1000000 fff00000 $filesize
or use tftpflash command:
run tftpflash
To Flash U-boot into the alternative bank (0xFF800000 - 0xFFBFFFFF):
tftp 1000000 u-boot.bin
erase ffb00000 +$filesize
cp.b 1000000 ffb00000 $filesize
4. Memory Map
-------------
------------ ------ ----
0x0000_0000 0x7fff_ffff DDR 2G
0x8000_0000 0x9fff_ffff PCI1/PEX1 MEM 512M
0xa000_0000 0xafff_ffff PCI2/PEX2 MEM 512M
0xf800_0000 0xf80f_ffff CCSR 1M
0xf810_0000 0xf81f_ffff PIXIS 1M
0xf840_0000 0xf840_3fff Stack space 32K
0xe200_0000 0xe2ff_ffff PCI1/PEX1 IO 16M
0xe300_0000 0xe3ff_ffff PCI2/PEX2 IO 16M
0xfe00_0000 0xfeff_ffff Flash(alternate)16M
0xff00_0000 0xffff_ffff Flash(boot bank)16M
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5. pixis_reset command
--------------------
A new command, "pixis_reset", is introduced to reset mpc8641hpcn board
using the FPGA sequencer. When the board restarts, it has the option
of using either the current or alternate flash bank as the boot
image, with or without the watchdog timer enabled, and finally with
or without frequency changes.
Usage is;
pixis_reset
pixis_reset altbank
pixis_reset altbank wd
pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
Examples;
/* reset to current bank, like "reset" command */
pixis_reset
/* reset board but use the to alternate flash bank */
pixis_reset altbank
/* reset board, use alternate flash bank with watchdog timer enabled*/
pixis_reset altbank wd
/* reset board to alternate bank with frequency changed.
* 40 is SYSCLK, 2.5 is COREPLL ratio, 10 is MPXPLL ratio
*/
pixis-reset altbank cf 40 2.5 10
Valid clock choices are in the 8641 Reference Manuals.