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+Overview
+--------
+MPC8569MDS is composed of two boards - PB (Processor Board) and PIB (Platform
+I/O Board). The mpc8569 PowerTM processor is mounted on PB board.
+
+Building U-boot
+-----------
+ make MPC8569MDS_config
+ make
+
+Memory Map
+----------
+0x0000_0000 0x7fff_ffff DDR 2G
+0xa000_0000 0xbfff_ffff PCIe MEM 512MB
+0xe000_0000 0xe00f_ffff CCSRBAR 1M
+0xe280_0000 0xe2ff_ffff PCIe I/O 8M
+0xc000_0000 0xdfff_ffff SRIO 512MB
+0xf000_0000 0xf3ff_ffff SDRAM 64MB
+0xf800_0000 0xf800_7fff BCSR 32KB
+0xf800_8000 0xf800_ffff PIB (CS4) 32KB
+0xf801_0000 0xf801_7fff PIB (CS5) 32KB
+0xfe00_0000 0xffff_ffff Flash 32MB
+
+
+Flashing u-boot Images
+---------------
+
+Use the following commands to program u-boot image into flash:
+
+ => tftp 1000000 u-boot.bin
+ => protect off all
+ => erase fff80000 ffffffff
+ => cp.b 1000000 fff80000 80000
+
+
+Setting the correct MAC addresses
+-----------------------
+The command - "mac", is introduced to set on-board system EEPROM in the format
+defined in board/freescale/common/sys_eeprom.c. we must set all 8 MAC
+addresses for the MPC8569MDS's 8 Ethernet ports and save it by "mac save" when
+we first get the board. The commands are as follows:
+ => mac i NXID /* Set NXID to this EEPROM */
+ => mac e 01 /* Set Errata, this value is not defined by hardware
+ designer, we can set whatever we want */
+ => mac n a0 /* Set Serial Number. This is not defined by hardware
+ designer, we can set whatever we want */
+ => mac date 090512080000 /* Set the date in YYMMDDhhmmss format */
+
+ => mac p 8 /* Set the number of mac ports, it should be 8 */
+ => mac 0 xx:xx:xx:xx:xx:xx /* xx:xx:xx:xx:xx:xx should be the real mac
+ address, you can refer to the value on
+ the sticker of the rear side of the board
+ */
+ .....
+ => mac 7 xx:xx:xx:xx:xx:xx
+ => mac read
+ => mac save
+
+After resetting the board, the ethxaddrs will be filled with the mac addresses
+if such environment variables are blank(never been set before). If the ethxaddr
+has been set but we want to update it, we can use the following commands:
+ => setenv ethxaddr /* x = "none",1,2,3,4,5,6,7 */
+ => save
+ => reset
+
+
+Programming the ucode to flash
+---------------------------------
+MPC8569 doesn't have ROM in QE, so we must upload the microcode(ucode) to QE's
+IRAM so that the QE can work. The ucode binary can be downloaded from
+http://opensource.freescale.com/firmware/, and it must be programmed to
+the address 0xfff0000 in the flash. Otherwise, the QE can't work and uboot
+hangs at "Net:"
+
+
+Please note the above two steps(setting mac addresses and programming ucode) are
+very important to get the board booting up and working properly.