Summary: ======== This file contains information about the cmi board configuration. Please see cmi_mpc5xx_config for further details. The cmi board is a customer specific board but should work with small modifications on every board which has a MPC5xx and either a 28F128J3A, 28F320J3A or 28F640J3A Intel flash mounted. Board Discription: ================== * Motorola MPC555 * RS232 connection * Intel flash 28F640J3A * Micron SRAM 1M * Altera PLD Bootstrap: ========== In contrast to the usual boot sequence used in U-Boot, on the cmi board we don't boot from the external flash directly. Because of we use a 16-bit flash and don't sample a RCW from the data bus to set the startup buswidth to 16-bit. Unfortunatly the default width, sampled from the default RCW is 32-bit. For this reason we burn the proper RCW into the internal flash shadow location and boot after power-on or reset from the internal flash and then branch to 0x02000100 where the U-Boot reset vector handler is located. Memory Map: =========== Memory Map after relocation: 0x0000 0000 CONFIG_SYS_SDRAM_BASE : 0x000F 9FFF : : 0x0100 0000 CONFIG_SYS_IMMR (Internal memory map base adress) : 0x0130 7FFF : : 0x0200 0000 CONFIG_SYS_FLASH_BASE : 0x027C FFFF : : 0x0300 0000 PLD_BASE Flash Partition: 0x0200 0000 Block 0 and 1 contain U-Boot except : environment : 0x0201 FFFF 0x0202 0000 Block 2 contains environment (.ppcenv) : 0x0202 FFFF See README file for futher information about U-Boot relocation and partitioning. Tested Features: ================ * U-Boot commands: go, loads, loadb, all memory features, printenv, setenv, saveenv, protect, erase, fli, bdi, mtest, reset, version, coninfo, help (see configuration file for available commands) * Blinking led to indicate boot process Added or Changed Files: ======================= u-boot-0.2.0/board/cmi/* u-boot-0.2.0/include/configs/cmi_mpc5xx.h Regards, Martin