doc/README.mpc8315erdb

   1 Freescale MPC8315ERDB 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         0xe030_0000     0xe03f_ffff     PCI IO           1M
  38         0xe060_0000     0xe060_7fff     NAND FLASH (CS1) 32K
  39         0xfe00_0000     0xfe7f_ffff     NOR FLASH (CS0)  8M
  40
  41         When booting from NAND, NAND flash is CS0 and NOR flash
  42         is CS1.
  43
  44 3.      Definitions
  45
  46 3.1     Explanation of NEW definitions in:
  47
  48         include/configs/MPC8315ERDB.h
  49
  50         CONFIG_MPC83xx          MPC83xx family
  51         CONFIG_MPC831x          MPC831x specific
  52         CONFIG_MPC8315          MPC8315 specific
  53         CONFIG_MPC8315ERDB      MPC8315ERDB board specific
  54
  55 4.      Compilation
  56
  57         Assuming you're using BASH (or similar) as your shell:
  58
  59         export CROSS_COMPILE=your-cross-compiler-prefix-
  60         make distclean
  61         make MPC8315ERDB_config (or MPC8315ERDB_NAND_config for u-boot-nand.bin)
  62         make all
  63
  64 5.      Downloading and Flashing Images
  65
  66 5.1     Reflash U-boot Image using U-boot
  67
  68         NOR flash:
  69
  70         tftp 40000 u-boot.bin
  71         protect off all
  72         erase fe000000 fe1fffff
  73
  74         cp.b 40000 fe000000 xxxx
  75         protect on all
  76
  77         You have to supply the correct byte count with 'xxxx'
  78         from the TFTP result log.
  79
  80         NAND flash:
  81
  82         =>tftpboot $loadaddr <filename>
  83         =>nand erase 0 0x80000
  84         =>nand write $loadaddr 0 0x80000
  85
  86         ...where 0x80000 is the filesize rounded up to
  87         the next 0x20000 increment.
  88
  89 5.2     Downloading and Booting Linux Kernel
  90
  91         Ensure that all networking-related environment variables are set
  92         properly (including ipaddr, serverip, gatewayip (if needed),
  93         netmask, ethaddr, eth1addr, rootpath (if using NFS root),
  94         fdtfile, and bootfile).
  95
  96         Then, do one of the following, depending on whether you
  97         want an NFS root or a ramdisk root:
  98
  99         =>run nfsboot
 100         or
 101         =>run ramboot
 102
 103 6       Notes
 104
 105         The console baudrate for MPC8315ERDB is 115200bps.