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