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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.cmi | 84 | ||||
| -rw-r--r-- | doc/README.mpc5xx | 48 |
2 files changed, 132 insertions, 0 deletions
diff --git a/doc/README.cmi b/doc/README.cmi new file mode 100644 index 0000000..48052b8 --- /dev/null +++ b/doc/README.cmi @@ -0,0 +1,84 @@ + +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 CFG_SDRAM_BASE + : + 0x000F 9FFF + : + : + 0x0100 0000 CFG_IMMR (Internal memory map base adress) + : + 0x0130 7FFF + : + : + 0x0200 0000 CFG_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 diff --git a/doc/README.mpc5xx b/doc/README.mpc5xx new file mode 100644 index 0000000..2c1a293 --- /dev/null +++ b/doc/README.mpc5xx @@ -0,0 +1,48 @@ + +Summary: +======== + +This file contains information about the port of U-Boot to the +Motorola mpc5xx series of CPUs. Most of this code is taken from +existing code mainly from the mpc8xx port. In contrast to mpc8xx, +the mpc5xx has no CPM, MMU and cache facilities. + +The implemented features have been tested on the cmi board, a +customer specific board (see README.cmi). + +Hence this port is only tested on the cmi board further possible +tests on other boards will be very valuable. + +Not Tested Features: +==================== + +* System calls +* Interrupts + +Added or Changed Files: +======================= + +u-boot-0.2.0/common/cmd_boot.c +u-boot-0.2.0/common/cmd_reginfo.c +u-boot-0.2.0/common/environment.c +u-boot-0.2.0/cpu/mpc5xx/* +u-boot-0.2.0/include/cmd_reginfo.h +u-boot-0.2.0/include/common.h +u-boot-0.2.0/include/ppc_asm.tmpl +u-boot-0.2.0/include/watchdog.h +u-boot-0.2.0/include/mpc5xx.h +u-boot-0.2.0/include/status_led.h +u-boot-0.2.0/include/asm-ppc/u-boot.h +u-boot-0.2.0/include/asm-ppc/5xx_immap.h +u-boot-0.2.0/lib_ppc/board.c +u-boot-0.2.0/lib_ppc/cache.c +u-boot-0.2.0/lib_ppc/time.c +u-boot-0.2.0/Makefile +u-boot-0.2.0/CREDITS +u-boot-0.2.0/doc/README.mpc5xx +u-boot-0.2.0/doc/README.cmi +u-boot-0.2.0/README +u-boot-0.2.0/MAKEALL + +Regards, +Martin |