mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 05:50:17 +00:00
81 lines
1.9 KiB
Plaintext
81 lines
1.9 KiB
Plaintext
Freescale MPC8315ERDB Board
|
|
-----------------------------------------
|
|
|
|
1. Board Switches and Jumpers
|
|
|
|
S3 is used to set CONFIG_SYS_RESET_SOURCE.
|
|
|
|
To boot the image at 0xFE000000 in NOR flash, use these DIP
|
|
switch settings for S3 S4:
|
|
|
|
+------+ +------+
|
|
| | | **** |
|
|
| **** | | |
|
|
+------+ ON +------+ ON
|
|
4321 4321
|
|
(where the '*' indicates the position of the tab of the switch.)
|
|
|
|
2. Memory Map
|
|
The memory map looks like this:
|
|
|
|
0x0000_0000 0x07ff_ffff DDR 128M
|
|
0x8000_0000 0x8fff_ffff PCI MEM 256M
|
|
0x9000_0000 0x9fff_ffff PCI_MMIO 256M
|
|
0xe000_0000 0xe00f_ffff IMMR 1M
|
|
0xe030_0000 0xe03f_ffff PCI IO 1M
|
|
0xe060_0000 0xe060_7fff NAND FLASH (CS1) 32K
|
|
0xfe00_0000 0xfe7f_ffff NOR FLASH (CS0) 8M
|
|
|
|
3. Definitions
|
|
|
|
3.1 Explanation of NEW definitions in:
|
|
|
|
include/configs/MPC8315ERDB.h
|
|
|
|
CONFIG_MPC83xx MPC83xx family
|
|
CONFIG_MPC831x MPC831x specific
|
|
CONFIG_MPC8315 MPC8315 specific
|
|
CONFIG_MPC8315ERDB MPC8315ERDB board specific
|
|
|
|
4. Compilation
|
|
|
|
Assuming you're using BASH (or similar) as your shell:
|
|
|
|
export CROSS_COMPILE=your-cross-compiler-prefix-
|
|
make distclean
|
|
make MPC8315ERDB_config
|
|
make all
|
|
|
|
5. Downloading and Flashing Images
|
|
|
|
5.1 Reflash U-boot Image using U-boot
|
|
|
|
tftp 40000 u-boot.bin
|
|
protect off all
|
|
erase fe000000 fe1fffff
|
|
|
|
cp.b 40000 fe000000 xxxx
|
|
protect on all
|
|
|
|
You have to supply the correct byte count with 'xxxx'
|
|
from the TFTP result log.
|
|
|
|
5.2 Downloading and Booting Linux Kernel
|
|
|
|
Ensure that all networking-related environment variables are set
|
|
properly (including ipaddr, serverip, gatewayip (if needed),
|
|
netmask, ethaddr, eth1addr, rootpath (if using NFS root),
|
|
fdtfile, and bootfile).
|
|
|
|
Then, do one of the following, depending on whether you
|
|
want an NFS root or a ramdisk root:
|
|
|
|
=>run nfsboot
|
|
or
|
|
=>run ramboot
|
|
|
|
6 Notes
|
|
|
|
Booting from NAND flash is not yet supported.
|
|
The console baudrate for MPC8315ERDB is 115200bps.
|