mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
118 lines
4.5 KiB
Text
118 lines
4.5 KiB
Text
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 CONFIG_SYS_CMA_CSn_{BASE,SIZE} and
|
|
CONFIG_SYS_{B,O}Rn_PRELIM. Also be careful of the clock settings installed
|
|
into the SCCR - via the define CONFIG_SYS_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 CONFIG_SYS_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.
|