Freescale MPC8323ERDB Board
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1. Memory Map
The memory map looks like this:
0x0000_0000 0x03ff_ffff DDR 64M
0x8000_0000 0x8fff_ffff PCI MEM 256M
0x9000_0000 0x9fff_ffff PCI_MMIO 256M
0xe000_0000 0xe00f_ffff IMMR 1M
0xd000_0000 0xd3ff_ffff PCI IO 64M
0xfe00_0000 0xfeff_ffff NOR FLASH (CS0) 16M
2. Compilation
Assuming you're using BASH (or similar) as your shell:
export CROSS_COMPILE=your-cross-compiler-prefix-
make distclean
make MPC8323ERDB_config
make
3. Downloading and Flashing Images
3.1 Reflash U-Boot Image using U-Boot
N.b, have an alternate means of programming
the flash available if the new U-Boot doesn't boot.
First try a:
tftpboot $loadaddr $uboot
to make sure that the TFTP load will succeed before
an erase goes ahead and wipes out your current firmware.
Then do a:
run tftpflash
which is a shorter version of the manual sequence:
tftp $loadaddr u-boot.bin
protect off fe000000 +$filesize
erase fe000000 +$filesize
cp.b $loadaddr fe000000 $filesize
To keep your old U-Boot's environment variables, do a:
saveenv
prior to resetting the board.
3.2 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
4 Notes
The console baudrate for MPC8323ERDB is 115200bps.
chenyf
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