Freescale MPC8313ERDB Board ----------------------------------------- 1. Board Switches and Jumpers S3 is used to set CFG_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 0xe200_0000 0xe20f_ffff PCI IO 16M 0xe280_0000 0xe280_7fff NAND FLASH (CS1) 32K 0xf000_0000 0xf001_ffff VSC7385 (CS2) 128K 0xfa00_0000 0xfa00_7fff Board Status/ 32K LED Control (CS3) 0xfe00_0000 0xfe7f_ffff NOR FLASH (CS0) 8M 3. Definitions 3.1 Explanation of NEW definitions in: include/configs/MPC8313ERDB.h CONFIG_MPC83xx MPC83xx family CONFIG_MPC831x MPC831x specific CONFIG_MPC8313ERDB MPC8313ERDB board specific 4. Compilation Assuming you're using BASH (or similar) as your shell: export CROSS_COMPILE=your-cross-compiler-prefix- make distclean make MPC8313ERDB_33_config (or make MPC8313ERDB_66_config, depending on the speed of the oscillator on your board) make 5. Downloading and Flashing Images 5.1 Reflash U-boot Image using U-boot =>run tftpflash You may want to try =>tftpboot $loadaddr $uboot first, to make sure that the TFTP load will succeed before it goes ahead and wipes out your current firmware. And of course, have an alternate means of programming the flash available if the new u-boot doesn't boot. 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 MPC8313ERDB is 115200bps.