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README

      1 Freescale MPC8313ERDB Board
      2 -----------------------------------------
      3 
      4 1.	Board Switches and Jumpers
      5 
      6 	S3 is used to set CONFIG_SYS_RESET_SOURCE.
      7 
      8 	To boot the image at 0xFE000000 in NOR flash, use these DIP
      9 	switch settings for S3 S4:
     10 
     11 	+------+	+------+
     12 	|      |	| **** |
     13 	| **** |	|      |
     14 	+------+ ON	+------+ ON
     15 	  4321		  4321
     16 	(where the '*' indicates the position of the tab of the switch.)
     17 
     18 	To boot the image at the beginning of NAND flash, use these
     19 	DIP switch settings for S3 S4:
     20 
     21 	+------+	+------+
     22 	| *    |	|  *** |
     23 	|  *** |	| *    |
     24 	+------+ ON	+------+ ON
     25 	  4321		  4321
     26 	(where the '*' indicates the position of the tab of the switch.)
     27 
     28 	When booting from NAND, use u-boot-nand.bin, not u-boot.bin.
     29 
     30 2.	Memory Map
     31 	The memory map looks like this:
     32 
     33 	0x0000_0000	0x07ff_ffff	DDR		 128M
     34 	0x8000_0000	0x8fff_ffff	PCI MEM		 256M
     35 	0x9000_0000	0x9fff_ffff	PCI_MMIO	 256M
     36 	0xe000_0000	0xe00f_ffff	IMMR		 1M
     37 	0xe200_0000	0xe20f_ffff	PCI IO		 16M
     38 	0xe280_0000	0xe280_7fff	NAND FLASH (CS1) 32K
     39 	0xf000_0000	0xf001_ffff	VSC7385 (CS2)	 128K
     40 	0xfa00_0000	0xfa00_7fff	Board Status/	 32K
     41 					LED Control (CS3)
     42 	0xfe00_0000	0xfe7f_ffff	NOR FLASH (CS0)	 8M
     43 
     44 	When booting from NAND, NAND flash is CS0 and NOR flash
     45 	is CS1.
     46 
     47 3.	Definitions
     48 
     49 3.1	Explanation of NEW definitions in:
     50 
     51 	include/configs/MPC8313ERDB.h
     52 
     53 	CONFIG_MPC83xx		MPC83xx family
     54 	CONFIG_MPC831x		MPC831x specific
     55 	CONFIG_MPC8313ERDB	MPC8313ERDB board specific
     56 
     57 4.	Compilation
     58 
     59 	Assuming you're using BASH (or similar) as your shell:
     60 
     61 	export CROSS_COMPILE=your-cross-compiler-prefix-
     62 	make distclean
     63 	make MPC8313ERDB_XXX_config
     64 	(where XXX is:
     65 	   33 - 33 MHz oscillator, boot from NOR flash
     66 	   66 - 66 MHz oscillator, boot from NOR flash
     67 	   NAND_33 - 33 MHz oscillator, boot from NAND flash
     68 	   NAND_66 - 66 MHz oscillator, boot from NAND flash)
     69 	make
     70 
     71 5.	Downloading and Flashing Images
     72 
     73 5.1	Reflash U-Boot Image using U-Boot
     74 
     75 	NOR flash:
     76 
     77 	=>run tftpflash
     78 
     79 	You may want to try
     80 	=>tftpboot $loadaddr $uboot
     81 	first, to make sure that the TFTP load will succeed before it
     82 	goes ahead and wipes out your current firmware.  And of course,
     83 	have an alternate means of programming the flash available
     84 	if the new U-Boot doesn't boot.
     85 
     86 	NAND flash:
     87 
     88 	=>tftpboot $loadaddr <filename>
     89 	=>nand erase 0 0x80000
     90 	=>nand write $loadaddr 0 0x80000
     91 
     92 	...where 0x80000 is the filesize rounded up to
     93 	the next 0x20000 increment.
     94 
     95 5.2	Downloading and Booting Linux Kernel
     96 
     97 	Ensure that all networking-related environment variables are set
     98 	properly (including ipaddr, serverip, gatewayip (if needed),
     99 	netmask, ethaddr, eth1addr, rootpath (if using NFS root),
    100 	fdtfile, and bootfile).
    101 
    102 	Then, do one of the following, depending on whether you
    103 	want an NFS root or a ramdisk root:
    104 
    105 	=>run nfsboot
    106 	or
    107 	=>run ramboot
    108 
    109 6	Notes
    110 
    111 	The console baudrate for MPC8313ERDB is 115200bps.
    112