This patch fixes a problem with an incorrect setup for the refresh
timer of the 44x DDR controller in the file cpu/ppc4xx/sdram.c
Signed-off-by: Stefan Roese <sr@denx.de>
This code will optimize the DDR2 controller setup on a board specific
basis.
Note: This code doesn't work right now on the NAND booting image for the
Sequoia board, since it doesn't fit into the 4kBytes for the SPL image.
Signed-off-by: Stefan Roese <sr@denx.de>
Patch below corrects the setting of the zmiifer register, it was
overwritting the register rather than ORing the settings.
Signed-off-by: Neil Wilson <NWilson@airspan.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Fixed cpu/ppc4xx/start.S for 440EPx Errata: further corrects PPC440EPx
errata 1.12: 440_33 by moving patch up in code.
Signed-off-by: Jeff Mann <mannj@embeddedplanet.com>
Signed-off-by: Stefan Roese <sr@denx.de>
- Add support for PPC440EPx & PPC440GRx
- Add support for PPC440EP(x)/GR(x) NAND controller
in cpu/ppc4xx directory
- Add NAND boot functionality for Sequoia board,
please see doc/README.nand-boot-ppc440 for details
- This Sequoia NAND image doesn't support environment
in NAND for now. This will be added in a short while.
Patch by Stefan Roese, 07 Sep 2006
Modifications are based on the linux kernel approach and
support two use cases:
1) Add O= to the make command line
'make O=/tmp/build all'
2) Set environement variable BUILD_DIR to point to the desired location
'export BUILD_DIR=/tmp/build'
'make'
The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'
Command line 'O=' setting overrides BUILD_DIR environent variable.
When none of the above methods is used the local build is performed and
the object files are placed in the source directory.
AMCC suggested to set the PMU bit to 0 for best performace on
the PPC440 DDR controller.
Please see doc/README.440-DDR-performance for details.
Patch by Stefan Roese, 28 Jul 2006
The TB5200 ("Tinybox") is a small baseboard for the TQM5200 module
integrated in a little aluminium case.
Patch by Martin Krause, 8 Jun 2006
Some code cleanup
405 SDRAM: - The SDRAM parameters can now be defined in the board
config file and the 405 SDRAM controller values will
be calculated upon bootup (see PPChameleonEVB).
When those settings are not defined in the board
config file, the register setup will be as it is now,
so this implementation should not break any current
design using this code.
Thanks to Andrea Marson from DAVE for this patch.
440 DDR: - Added function sdram_tr1_set to auto calculate the
TR1 value for the DDR.
- Added ECC support (see p3p440).
Patch by Stefan Roese, 17 Mar 2006
Stefan Roese
Heiko Schocher
Wolfgang Denk
Wolfgang Denk
Marian Balakowicz
Rafal Jaworowski
Wolfgang Denk