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* Change initdram() return type to phys_size_tBecky Bruce2008-06-12-2/+2
| | | | | | | | | | | | | | | | | | | This patch changes the return type of initdram() from long int to phys_size_t. This is required for a couple of reasons: long int limits the amount of dram to 2GB, and u-boot in general is moving over to phys_size_t to represent the size of physical memory. phys_size_t is defined as an unsigned long on almost all current platforms. This patch *only* changes the return type of the initdram function (in include/common.h, as well as in each board's implementation of initdram). It does not actually modify the code inside the function on any of the platforms; platforms which wish to support more than 2GB of DRAM will need to modify their initdram() function code. Build tested with MAKEALL for ppc, arm, mips, mips-el. Booted on powerpc MPC8641HPCN. Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
* ppc4xx: Remove superfluous dram_init() call or replace it by initdram()Stefan Roese2008-06-03-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Historically the 405 U-Boot port had a dram_init() call in early init stage. This function was still called from start.S and most of the time coded in assembler. This is not needed anymore (since a long time) and boards should implement the common initdram() function in C instead. This patch now removed the dram_init() call from start.S and removes the empty implementations that are scattered through most of the 405 board ports. Some older board ports really implement this dram_init() though. These are: csb272 csb472 ERIC EXBITGEN W7OLMC W7OLMG I changed those boards to call this assembler dram_init() function now from their board specific initdram() instead. This *should* work, but please test again on those platforms. And it is perhaps a good idea that those boards use some common 405 SDRAM initialization code from cpu/ppc4xx at some time. So further patches welcome here. Signed-off-by: Stefan Roese <sr@denx.de>
* ppc4xx: Enable Primordial Stack for 40x and Unify ECC HandlingGrant Erickson2008-06-03-43/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (Part 1 of 2): * Rolls up a suite of changes to enable correct primordial stack and global data handling when the data cache is used for such a purpose for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS). * Related to the first, unifies DDR2 SDRAM and ECC initialization by eliminating redundant ECC initialization implementations and moving redundant SDRAM initialization out of board code into shared 4xx code. * Enables MCSR visibility on the 405EX(r). * Enables the use of the data cache for initial RAM on both AMCC's Kilauea and Makalu and removes a redundant CFG_POST_MEMORY flag from each board's CONFIG_POST value. - Removed, per Stefan Roese's request, defunct memory.c file for Makalu and rolled sdram_init from it into makalu.c. With respect to the 4xx DDR initialization and ECC unification, there is certainly more work that can and should be done (file renaming, etc.). However, that can be handled at a later date on a second or third pass. As it stands, this patch moves things forward in an incremental yet positive way for those platforms that utilize this code and the features associated with it. Signed-off-by: Grant Erickson <gerickson@nuovations.com> Signed-off-by: Stefan Roese <sr@denx.de>
* ppc4xx: Add initial Zeus (PPC405EP) board supportStefan Roese2007-08-14-8/+19
| | | | Signed-off-by: Stefan Roese <sr@denx.de>
* ppc4xx: Add support for AMCC 405EP Taihu boardJohn Otken2007-07-26-1/+10
| | | | Signed-off-by: John Otken <john@softadvances.com>
* [PATCH] Add support for AMCC Taishan PPC440GX eval boardStefan Roese2007-01-18-8/+25
| | | | Signed-off-by: Stefan Roese <sr@denx.de>
* [PATCH] 44x: Fix problem with DDR controller setup (refresh rate)Stefan Roese2007-01-06-1/+1
| | | | | | | 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>
* Add initial support for the ALPR board from ProdriveStefan Roese2006-08-15-0/+8
| | | | | NAND needs some additional testing Patch by Heiko Schocher, 15 Aug 2006
* PPC440 DDR setup: Set SDRAM0_CFG0[PMU]=0 for best performanceStefan Roese2006-07-28-1/+1
| | | | | | | 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
* Some code cleanupWolfgang Denk2006-04-16-107/+107
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* Updates to common PPC4xx onboard (DDR)SDRAM init code (405 and 440)Stefan Roese2006-03-31-34/+264
| | | | | | | | | | | | | | | | | | 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
* Add support for Prodrive P3P440 board:Stefan Roese2005-11-22-0/+70
| | | | | | | - Added onboard PPC440 DDR autodetection in cpu/ppc/sdram.c - CFG_FLASH_QUIET_TEST added to use the common CFI driver for bank autodetection Patch by Stefan Roese, 22 Nov 2005
* cpu/ppc4xx/sdram.c rewritten now using get_ram_size()stroese2004-07-15-227/+38
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* Disable memory controller before setting first values.stroese2003-09-12-0/+5
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* * Code cleanup:wdenk2003-06-27-4/+4
| | | | | | | | | - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
* Cleanup: remove trailing white spacewdenk2003-02-11-5/+5
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* Added 4MByte and 128MByte onboard SDRAMstroese2003-02-10-4/+105
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* Initial revisionwdenk2002-11-03-0/+191
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