Freescale MPC8641HPCN board
===========================

Created 05/24/2006 Haiying Wang
-------------------------------

1. Building U-Boot
------------------
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

	SW2(1-4) = 1100		CFG_CCBPLL	= 0010	:: 2X 
						  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
	SW5(4)	 = 0 		CFG_PORTDIV	= 1	:: 2:1 for PD4
							   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 ffffffff
	cp.b 1000000 fff00100 80000

To Flash U-boot into the alternative bank (0xFF800000 - 0xFFBFFFFF):

	tftp 1000000 u-boot.bin
	erase ffb00000 ffbfffff
	cp.b 1000000 ffb00100 80000


4. Memory Map
-------------

	Memory Range			Device		Size		
	------------			------		----
	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
