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diff --git a/board/cogent/README b/board/cogent/README new file mode 100644 index 0000000..e6eef66 --- /dev/null +++ b/board/cogent/README @@ -0,0 +1,118 @@ +Cogent Modular Architecture configuration +----------------------------------------- + +As the name suggests, the Cogent platform is a modular system where +you have a motherboard into which plugs a cpu module and one or more +i/o modules. This provides very nice flexibility, but makes the +configuration task somewhat harder. + +The possible Cogent motherboards are: + +Code Config Variable Description +---- --------------- ----------- + +CMA101 CONFIG_CMA101 32MB ram, 2 ser, 1 par, rtc, dipsw, + 2x16 lcd, eth(?) +CMA102 CONFIG_CMA102 32MB ram, 2 ser, 1 par, rtc, dipsw, + 2x16 lcd +CMA111 CONFIG_CMA111 32MB ram, 1MB flash, 4 ser, 1 par, + rtc, ps/2 kbd/mse, 2x16 lcd, 2xPCI, + 10/100TP eth +CMA120 CONFIG_CMA120 32MB ram, 1MB flash, 4 ser, 1 par, + rtc, ps/2 kbd/mse, 2x16 lcd, 2xPCI, + 10/100TP eth, 2xPCMCIA, video/lcd-panel +CMA150 CONFIG_CMA150 8MB ram, 1MB flash, 2 ser, 1 par, rtc, + ps/2 kbd/mse, 2x16 lcd + +The possible Cogent PowerPC CPU modules are: + +Code Config Variable Description +---- --------------- ----------- + +CMA278-603EV CONFIG_CMA278_603EV PPC603ev CPU, 66MHz clock, 512K EPROM, + JTAG/COP +CMA278-603ER CONFIG_CMA278_603ER PPC603er CPU, 66MHz clock, 512K EPROM, + JTAG/COP +CMA278-740 CONFIG_CMA278_740 PPC740 CPU, 66MHz clock, 512K EPROM, + JTAG/COP +CMA280-509 CONFIG_CMA280_509 MPC505/509 CPU, 50MHz clock, + 512K EPROM, BDM +CMA282 CONFIG_CMA282 MPC8260 CPU, 66MHz clock, 512K EPROM, + JTAG, 16M RAM, 1 x ser (SMC2), + 1 x 10baseT PHY (SCC4), 1 x 10/100 TP + PHY (FCC1), 2 x 48pin DIN (FCC2 + TDM1) +CMA285 CONFIG_CMA285 MPC801 CPU, 33MHz clock, 512K EPROM, + BDM +CMA286-21 CONFIG_CMA286_21 MPC821 CPU, 66MHz clock, 512K EPROM, + BDM, 16M RAM, 2 x ser (SMC1 + SMC2), + 1 x 10baseT PHY (SCC2) +CMA286-60-OLD CONFIG_CMA286_60_OLD MPC860 CPU, 33MHz clock, 128K EPROM, + BDM +CMA286-60 CONFIG_CMA286_60 MPC860 CPU, 66MHz clock, 512K EPROM, + BDM, 16M RAM, 2 x ser (SMC1 + SMC2), + 1 x 10baseT PHY (SCC2) +CMA286-60P CONFIG_CMA286_60P MPC860P CPU, 66MHz clock, 512K EPROM, + BDM, 16M RAM, 2 x ser (SMC1 + SMC2), + 1 x 10baseT PHY (SCC2) +CMA287-23 CONFIG_CMA287_23 MPC823 CPU, 33MHz clock, 512K EPROM, + BDM +CMA287-50 CONFIG_CMA287_50 MPC850 CPU, 33MHz clock, 512K EPROM, + BDM + +(there are a lot of other cpu modules with ARM, MIPS and M-CORE CPUs, +but we'll worry about those later). + +The possible Cogent CMA I/O Modules are: + +Code Config Variable Description +---- --------------- ----------- + +CMA302 CONFIG_CMA302 up to 16M flash, ps/2 keyboard/mouse +CMA352 CONFIG_CMA352 CMAbus <=> PCI + +Currently supported: + + Motherboards: CMA102 + CPU Modules: CMA286-60-OLD + I/O Modules: CMA302 I/O module + +To configure, perform the usual U-Boot configuration task of editing +"include/config_cogent_mpc8xx.h" and reviewing all the options and +settings in there. In particular, check the chip select values +installed into the memory controller's various option and base +registers - these are set by the defines CFG_CMA_CSn_{BASE,SIZE} and +CFG_{B,O}Rn_PRELIM. Also be careful of the clock settings installed +into the SCCR - via the define CFG_SCCR. Finally, decide whether you +want the serial console on motherboard serial port A or on one of the +8xx SMC ports, and set CONFIG_8xx_CONS_{SMC1,SMC2,NONE} accordingly +(NONE means use Cogent motherboard serial port A). + +Then edit the file "cogent/config.mk". Firstly, set TEXT_BASE to be +the base address of the EPROM for the CPU module. This should be the +same as the value selected for CFG_MONITOR_BASE in +"include/config_cogent_*.h" (in fact, I have made this automatic via +the -DTEXT_BASE=... option in CPPFLAGS). + +Finally, set the values of the make variables $(CMA_MB) and $(CMA_IOMS). + +$(CMA_MB) is the name of the directory that contains support for your +motherboard. At this stage, only "cma10x" exists, which supports the +CMA101 and CMA102 motherboards - but only selected devices, namely +serial, lcd and dipsw. + +$(CMA_IOMS) is a list of zero or more directories that contain +support for the i/o modules you have installed. At this stage, only +"cma302" exists, which supports the CMA302 flash i/o module - but +only the flash part, not the ps/2 keyboard and mouse interfaces. + +There should be a make variable for each of the above directories, +which is the directory name with "_O" appended. This make variable is +a list of object files to compile from that directory and include in +the library. + + e.g. cma10x_O = serial.o ... + +That's it. Good Luck. + +Murray.Jensen@cmst.csiro.au +August 31, 2000. |