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The following changes allow U-Boot to fully relocate from flash to RAM: - Remove linker scripts' .fixup sections from the .text section - Add -mrelocatable to PLATFORM_RELFLAGS for all boards - Define CONFIG_RELOC_FIXUP_WORKS for all boards Previously, U-Boot would partially relocate, but statically initialized pointers needed to be manually relocated. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> |
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.. | ||
config.mk | ||
dipsw.c | ||
dipsw.h | ||
flash.c | ||
flash.h | ||
kbm.c | ||
kbm.h | ||
lcd.c | ||
lcd.h | ||
Makefile | ||
mb.c | ||
mb.h | ||
par.c | ||
par.h | ||
pci.c | ||
pci.h | ||
README | ||
README.cma286 | ||
rtc.c | ||
rtc.h | ||
serial.c | ||
serial.h | ||
u-boot.lds | ||
u-boot.lds.debug |
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.