The AMCC Luan now uses the common 440SP(e) DDR SPD code for DDR
inititializition. This includes DDR auto calibration and support
for different DIMM modules, instead of the fixed setup used in
the earlier version.
This patch also enables the cache in FLASH for the startup
phase of U-Boot (while running from FLASH). After relocating to
SDRAM the cache is disabled again. This will speed up the boot
process, especially the SDRAM setup, since there are some loops
for memory testing (auto calibration).
Signed-off-by: Stefan Roese <sr@denx.de>
Some boards that can have more than 768MBytes of SDRAM need to
set "initrd_high", so that the initrd can be accessed by the
Linux kernel.
Signed-off-by: Stefan Roese <sr@denx.de>
before we can access it; add delay in case we are faster (with no
CF card inserted)
* Cleanup of some init functions
* Make sure SCC Ethernet is always stopped by the time we boot Linux
to avoid Linux crashes by early packets coming in.
* Accelerate flash accesses on LWMON board by using buffered writes
Stefan Roese
Wolfgang Denk
wdenk