1Freescale MPC8323ERDB Board 2----------------------------------------- 3 41. Memory Map 5 The memory map looks like this: 6 7 0x0000_0000 0x03ff_ffff DDR 64M 8 0x8000_0000 0x8fff_ffff PCI MEM 256M 9 0x9000_0000 0x9fff_ffff PCI_MMIO 256M 10 0xe000_0000 0xe00f_ffff IMMR 1M 11 0xd000_0000 0xd3ff_ffff PCI IO 64M 12 0xfe00_0000 0xfeff_ffff NOR FLASH (CS0) 16M 13 142. Compilation 15 16 Assuming you're using BASH (or similar) as your shell: 17 18 export CROSS_COMPILE=your-cross-compiler-prefix- 19 make distclean 20 make MPC8323ERDB_config 21 make 22 233. Downloading and Flashing Images 24 253.1 Reflash U-Boot Image using U-Boot 26 27 N.b, have an alternate means of programming 28 the flash available if the new U-Boot doesn't boot. 29 30 First try a: 31 32 tftpboot $loadaddr $uboot 33 34 to make sure that the TFTP load will succeed before 35 an erase goes ahead and wipes out your current firmware. 36 Then do a: 37 38 run tftpflash 39 40 which is a shorter version of the manual sequence: 41 42 tftp $loadaddr u-boot.bin 43 protect off fe000000 +$filesize 44 erase fe000000 +$filesize 45 cp.b $loadaddr fe000000 $filesize 46 47 To keep your old U-Boot's environment variables, do a: 48 49 saveenv 50 51 prior to resetting the board. 52 533.2 Downloading and Booting Linux Kernel 54 55 Ensure that all networking-related environment variables are set 56 properly (including ipaddr, serverip, gatewayip (if needed), 57 netmask, ethaddr, eth1addr, rootpath (if using NFS root), 58 fdtfile, and bootfile). 59 60 Then, do one of the following, depending on whether you 61 want an NFS root or a ramdisk root: 62 63 run nfsboot 64 65 or 66 67 run ramboot 68 694 Notes 70 71 The console baudrate for MPC8323ERDB is 115200bps. 72