Add first draft of the MPC8641HPCN doc/README.
Signed-off-by: Jon Loeliger <jdl@jdl.com>
diff --git a/doc/README.mpc8641hpcn b/doc/README.mpc8641hpcn
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+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 512M
+ 0xe300_0000 0xe3ff_ffff PCI2/PEX2 IO 512M
+ 0xfe00_0000 0xfeff_ffff Flash(alternate)16M
+ 0xff00_0000 0xffff_ffff Flash(boot bank)16M