Since the existing 4xx SPD SDRAM initialization routines for the
405 SDRAM controller and the 440 DDR controller don't have much in
common this patch splits both drivers into different files.

This is in preparation for the 440 DDR2 controller support (440SP/e).
Signed-off-by: NStefan Roese <sr@denx.de>

This patch adds support for multiple I2C busses on the PPC4xx
platforms. Define CONFIG_I2C_MULTI_BUS in the board config file
to make use of this feature.

It also merges the 405 and 440 i2c header files into one common
file 4xx_i2c.h.

Also the 4xx i2c reset procedure is reworked since I experienced
some problems with the first access on the 440SPe Katmai board.
Signed-off-by: NStefan Roese <sr@denx.de>

Previously the strapping DCR/SDR was read to determine if the internal PCI
arbiter is enabled or not. This strapping bit can be overridden, so now
the current status is read from the correct DCR/SDR register.
Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

When PCI PNP is enabled the pci pnp configuration routine is called
which sets the PCI_CACHE_SIZE_LINE to 8. This seems to generate some
problems with some PCI cards. For now disable the PCI PNP configuration.
Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NReinhard Arlt <reinhard.arlt@esd-electronics.com>

Signed-off-by: NReinhard Arlt <reinhard.arlt@esd-electronics.com>

Signed-off-by: NStefan Roese <sr@denx.de>

The config file now handles the 2nd target, the Rainier (440GRx)
evaluation board better. Additionally the PPC input clock was
adjusted to match the correct value of 33.0 MHz.
Signed-off-by: NStefan Roese <sr@denx.de>

Now the AMCC eval boards Yosemite (440EP) and Yellowstone (440GR)
share one config file and all board specific files. This way we
don't have to maintain two different sets of files for nearly
identical boards.
Signed-off-by: NStefan Roese <sr@denx.de>

SCPU doesn't use redundant environment in flash.
Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

currently sectors 0-3. Sector 3 does not need to be protected, though
(U-boot occupies sectors 0-1 and the environment sector 2). This commit
fixes this, i.e., only sectors 0-2 are protected.

"mii device" results in "Unexpected exception"). Fixing this properly
requires some clean-up in the FEC drivers infrastructure for ColdFire, so
this commit disables MII commads for now.

Identification Register (CIR).

Signed-off-by: NHeiko Schocher <hs@denx.de>

             if you must swap the bytes between reading/writing.
             (Needed for the SC3 board)
Signed-off-by: NHeiko Schocher <hs@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

             The EBC Configuration Register is now by CFG_EBC_CFG definable
             Added JFFS2 support for the SC3 board.
Signed-off-by: NHeiko Schocher <hs@denx.de>

Signed-off-by: NStefan Roese <sr@denx.de>

Some code cleanup.

Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NHeiko Schocher <hs@denx.de>