path: root/arch/powerpc
AgeCommit message (Collapse)Author
2010-09-23ppc4xx: Cleanup of PVR detection code in cpu.cStefan Roese
This patch cleans the PVR detection code in check_cpu() up a bit. Basically the strings are better seperated, resulting in an easier to understand and maintain code version. The #ifdef's couldn't be removed easily because of two reasons: - Some SoC revisions have the same PVR, so need a way to differentiate between those two SoC's. - In some case statements registers only available in this SoC variant are referenced. Instead I moved the CONFIG_440 #ifdef a bit, so that 405 platforms don't add this 440 detection code and vice versa. Resulting in this U-Boot image size change: 405EX (Kilauea): 408 bytes less 440EPx (Sequoia): 604 bytes less 460EX (Canyonlands): 564 bytes less Signed-off-by: Stefan Roese <sr@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2010-09-23Remove unused CONFIG_SERIAL_SOFTWARE_FIFO featureStefan Roese
This patch removes the completely unused CONFIG_SERIAL_SOFTWARE_FIFO feature from U-Boot. It has only been implemented for PPC4xx and was not used at all. So let's remove it and make the code smaller and cleaner. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Detlev Zundel <dzu@denx.de>
2010-09-23ppc4xx: Use common NS16550 driver for PPC4xx UARTStefan Roese
This patch removes the PPC4xx UART driver. Instead the common NS16550 driver is used, since all PPC4xx SoC's use this peripheral device. The file 4xx_uart.c now only implements the UART clock calculation function which also sets the SoC internal UART divisors. All PPC4xx board config headers are changed to use this common NS16550 driver now. Tested on these boards: acadia, canyonlands, katmai, kilauea, sequoia, zeus Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23ppc4xx: Big header cleanup part 2, mostly PPC405 relatedStefan Roese
This cleanup is done by creating header files for all SoC versions and moving the SoC specific defines into these special headers. This way the common header ppc405.h and ppc440.h can be cleaned up finally. As a part from this cleanup, the GPIO definitions for PPC405EP are corrected. The high and low parts of the registers (for example CONFIG_SYS_GPIO0_OSRL vs. CONFIG_SYS_GPIO0_OSRH) have been defined in the wrong order. This patch now fixes this issue by switching these xxxH and xxxL values. This brings the GPIO 405EP port in sync with all other PPC4xx ports. Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23ppc4xx: Big header cleanup, mostly PPC440 relatedStefan Roese
This patch starts a bit PPC4xx header cleanup. First patch mostly touches PPC440 files. A later patch will touch the PPC405 files as well. This cleanup is done by creating header files for all SoC versions and moving the SoC specific defines into these special headers. This way the common header ppc405.h and ppc440.h can be cleaned up finally. Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23ppc4xx: Move gpio.h to ppc4xx-gpio.h since its ppc4xx specificStefan Roese
Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23ppc4xx: Move ppc4xx headers to powerpc include directoryStefan Roese
This patch moves some ppc4xx related headers from the common include directory (include/) to the powerpc specific one (arch/powerpc/include/asm/). This way to common include directory is not so cluttered with files. Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-21fsl: refactor MPC8610 and MPC5121 DIU code to use existing bitmap and logo ↵Timur Tabi
features The Freescale MPC8610 and MPC5121 DIU code had re-implement two features that already existed in U-Boot: bitmap drawing and top-of-screen logo (CONFIG_VIDEO_LOGO). So delete the 8610-specific code and use the built-in features instead. Signed-off-by: Timur Tabi <timur@freescale.com>
2010-09-19common: move TOTAL_MALLOC_LEN to include/common.hHeiko Schocher
Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
2010-09-19New implementation for internal handling of environment variables.Wolfgang Denk
Motivation: * Old environment code used a pessimizing implementation: - variable lookup used linear search => slow - changed/added variables were added at the end, i. e. most frequently used variables had the slowest access times => slow - each setenv() would calculate the CRC32 checksum over the whole environment block => slow * "redundant" envrionment was locked down to two copies * No easy way to implement features like "reset to factory defaults", or to select one out of several pre-defined (previously saved) sets of environment settings ("profiles") * No easy way to import or export environment settings ====================================================================== API Changes: - Variable names starting with '#' are no longer allowed I didn't find any such variable names being used; it is highly recommended to follow standard conventions and start variable names with an alphanumeric character - "printenv" will now print a backslash at the end of all but the last lines of a multi-line variable value. Multi-line variables have never been formally defined, allthough there is no reason not to use them. Now we define rules how to deal with them, allowing for import and export. - Function forceenv() and the related code in saveenv() was removed. At the moment this is causing build problems for the only user of this code (schmoogie - which has no entry in MAINTAINERS); may be fixed later by implementing the "env set -f" feature. Inconsistencies: - "printenv" will '\\'-escape the '\n' in multi-line variables, while "printenv var" will not do that. ====================================================================== Advantages: - "printenv" output much better readable (sorted) - faster! - extendable (additional variable properties can be added) - new, powerful features like "factory reset" or easy switching between several different environment settings ("profiles") Disadvantages: - Image size grows by typically 5...7 KiB (might shrink a bit again on systems with redundant environment with a following patch series) ====================================================================== Implemented: - env command with subcommands: - env print [arg ...] same as "printenv": print environment - env set [-f] name [arg ...] same as "setenv": set (and delete) environment variables ["-f" - force setting even for read-only variables - not implemented yet.] - end delete [-f] name not implemented yet ["-f" - force delete even for read-only variables] - env save same as "saveenv": save environment - env export [-t | -b | -c] addr [size] export internal representation (hash table) in formats usable for persistent storage or processing: -t: export as text format; if size is given, data will be padded with '\0' bytes; if not, one terminating '\0' will be added (which is included in the "filesize" setting so you can for exmple copy this to flash and keep the termination). -b: export as binary format (name=value pairs separated by '\0', list end marked by double "\0\0") -c: export as checksum protected environment format as used for example by "saveenv" command addr: memory address where environment gets stored size: size of output buffer With "-c" and size is NOT given, then the export command will format the data as currently used for the persistent storage, i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and prepend a valid CRC32 checksum and, in case of resundant environment, a "current" redundancy flag. If size is given, this value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 checksum and redundancy flag will be inserted. With "-b" and "-t", always only the real data (including a terminating '\0' byte) will be written; here the optional size argument will be used to make sure not to overflow the user provided buffer; the command will abort if the size is not sufficient. Any remainign space will be '\0' padded. On successful return, the variable "filesize" will be set. Note that filesize includes the trailing/terminating '\0' byte(s). Usage szenario: create a text snapshot/backup of the current settings: => env export -t 100000 => era ${backup_addr} +${filesize} => cp.b 100000 ${backup_addr} ${filesize} Re-import this snapshot, deleting all other settings: => env import -d -t ${backup_addr} - env import [-d] [-t | -b | -c] addr [size] import external format (text or binary) into hash table, optionally deleting existing values: -d: delete existing environment before importing; otherwise overwrite / append to existion definitions -t: assume text format; either "size" must be given or the text data must be '\0' terminated -b: assume binary format ('\0' separated, "\0\0" terminated) -c: assume checksum protected environment format addr: memory address to read from size: length of input data; if missing, proper '\0' termination is mandatory - env default -f reset default environment: drop all environment settings and load default environment - env ask name [message] [size] same as "askenv": ask for environment variable - env edit name same as "editenv": edit environment variable - env run same as "run": run commands in an environment variable ====================================================================== TODO: - drop default env as implemented now; provide a text file based initialization instead (eventually using several text files to incrementally build it from common blocks) and a tool to convert it into a binary blob / object file. - It would be nice if we could add wildcard support for environment variables; this is needed for variable name auto-completion, but it would also be nice to be able to say "printenv ip*" or "printenv *addr*" - Some boards don't link any more due to the grown code size: DU405, canyonlands, sequoia, socrates. => cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>, Stefan Roese <sr@denx.de>, Heiko Schocher <hs@denx.de> - Dropping forceenv() causes build problems on schmoogie => cc: Sergey Kubushyn <ksi@koi8.net> - Build tested on PPC and ARM only; runtime tested with NOR and NAND flash only => needs testing!! Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>, Cc: Stefan Roese <sr@denx.de>, Cc: Heiko Schocher <hs@denx.de> Cc: Sergey Kubushyn <ksi@koi8.net>
2010-09-19Make getenv() work before relocation.Wolfgang Denk
So far, getenv() would work before relocation is most cases, even though it was not intended to be used that way. When switching to a hash table based implementation, this would break a number of boards. For convenience, we make getenv() check if it's running before relocation and, if so, use getenv_f() internally. Note that this is limited to simple cases, as we use a small static buffer (32 bytes) in the global data for this purpose. For this reason, it is also not a good idea to convert all current uses of getenv_f() into getenv() - some of the existing use cases need to be able to deal with longer variable values, so getenv_f() is still needed and recommended for use before relocation. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-19Cleanup use of CONFIG_SYS_SRAM_BASE and CONFIG_SYS_SRAM_SIZEWolfgang Denk
Traditionally many boards used local definitions for SRAM base address and size (like SRAM_BASE, SRAM_LEN and/or SRAM_SIZE), while the (now) "official" names are CONFIG_SYS_SRAM_BASE and CONFIG_SYS_SRAM_SIZE. The corresponding code in arch/powerpc/lib/board.c was board specific, and has never actually been maintained well. Replace this by feature- specific code and adapt the boards that actually use this. NOTE: there is still a ton of boards using the old #defines, which therefor contain incorrect values in bi_sramstart and bi_sramsize. All respective board maintainers are requested to clean up their respective configurations. Thanks. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Josef Wagner <Wagner@Microsys.de> Cc: Stefan Roese <sr@denx.de> Cc: Heiko Schocher <hs@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2010-09-19Save environment data to mmc.Terry Lv
This patch is to save environment data to mmc card. It uses interfaces defined in generic mmc. Signed-off-by: Terry Lv <r65388@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
2010-09-08bedbug_860.c, bedbug_603e.c: Fix return type to silence compile warnings.Wolfgang Denk
commit 47e26b1b "cmd_usage(): simplify return code handling" caused the following compile warnings: bedbug_860.c: In function 'bedbug860_do_break': bedbug_860.c:73: warning: 'return' with a value, in function returning void bedbug_860.c:121: warning: 'return' with a value, in function returning void Fix the return type. Actually these files could need some cleanup - commands should return proper error codes, and there are coding style issues. => To be fixed later. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-07Merge branch 'master' of git://git.denx.de/u-boot-ppc4xxWolfgang Denk
2010-09-03ppc4xx: Invalidate d-cache when used as init-ramStefan Roese
We need to invalidate the data cache after it has been used as init-ram. This problem was detected on the lwmon5 update. Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-03ppc4xx: Fix 440EPx bug in reconfigure_pll()Stefan Roese
This patch fixes a bug in reconfigure_pll(), where the detection of the current bootstrap option is wrong. The ICS bits where incorrectly shifted. This bug was found on the lwmon5 board, which uses bootstrap option H (I2C bootstrap EEPROM). Additionally a bit of code was moved into the if statement, since its only used after later on. No need to run this code all the time. Also, a few empty lines are added to make the code better readable. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Rupjyoti Sarmah <rsarmah@amcc.com> Cc: Victor Gallardo <vgallardo@appliedmicro.com>
2010-08-31Fix parameters to support RDIMM for P2020DSYork Sun
Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-19mpx85xx/fdt: Add cpu-release-addr for all coresMatthew McClintock
We currently do not add a cpu-release-addr for core 0, this is needed when we want to reset core 0 and later restart it from Linux Signed-off-by: Matthew McClintock <msm@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-19powerpc/85xx: Rename Security Engine Job Queue to Job Ring to match docsKumar Gala
Official docs call it the Job Ring not Job Queue for the p4080 security block. Match the docs to reduce confusion. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-19powerpc/8xxx: share PIC defines among 85xx and 86xxKim Phillips
fixes breakeage introduced by commit a37c36f4e70bada297f281b0e542539ad43e50f6 "powerpc/8xxx: query feature reporting register for num cores on unknown cpus" Reported-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-10Merge branch 'master' of git://git.denx.de/u-boot-armWolfgang Denk
2010-08-10Merge branch 'master' of git://git.denx.de/u-boot-marvellWolfgang Denk
2010-08-09miiphy: constify device nameMike Frysinger
The driver name does not need to be writable, so constify it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
2010-08-09net ppc: fix ethernet device names with spacesHeiko Schocher
since commit 1384f3bb8a4f9066805b70c1418eda78ecb73fdd ethernet names with spaces drop a Warning: eth device name has a space! message. This patch fix it for: - "FEC ETHERNET" devices found on mpc512x, mpc5xxx, mpc8xx and mpc8220 boards. renamed to "FEC". - "SCC ETHERNET" devices found on mpc8xx, mpc82xx based boards. Renamed to "SCC". - "HDLC ETHERNET" devices found on mpc8xx boards Renamed to "HDLC" - "FCC ETHERNET" devices found on mpc8260 and mpc85xx based boards. Renamed to "FCC" Tested on the kup4k board. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
2010-08-08fdt relocate: have more attention to use a bootmap or notStephan Linz
Platforms with flat device tree support can use a bootmap to relocate the fdt_blob. This is not a must. That's why the relocation function boot_relocate_fdt() should be use only if CONFIG_OF_LIBFDT was defined together with CONFIG_SYS_BOOTMAPSZ (see common/cmd_bootm.c). On MicroBlaze platforms there is no need to use a bootmap to relocate a fdt blob. So we need a more precise focus on the compilation and usage of boot_relocate_fdt(). In general it is valid to exclude the function boot_relocate_fdt() if the bootmap size CONFIG_SYS_BOOTMAPSZ is not defined. Signed-off-by: Stephan Linz <linz@li-pro.net>
2010-08-08ide: add configurationAlbert Aribaud
CONFIG_IDE_SWAP_IO This configuration option replaces a complex conditional in cmd_ide.c with an explicit define to be added to SoC or board configs. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
2010-08-04Rename getenv_r() into getenv_f()Wolfgang Denk
While running from flash, i. e. before relocation, we have only a limited C runtime environment without writable data segment. In this phase, some configurations (for example with environment in EEPROM) must not use the normal getenv(), but a special function. This function had been called getenv_r(), with the idea that the "_r" suffix would mean the same as in the _r_eentrant versions of some of the C library functions (for example getdate vs. getdate_r, getgrent vs. getgrent_r, etc.). Unfortunately this was a misleading name, as in U-Boot the "_r" generally means "running from RAM", i. e. _after_ relocation. To avoid confusion, rename into getenv_f() [as "running from flash"] Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de>
2010-08-01powerpc/8xxx: query feature reporting register for num cores on unknown cpusKim Phillips
doing so helps avant garde users, such as those using simulators that allow users to configure the number of cores, so as to not have to manually adjust u-boot sources. h/w should also be reliably setting FRR NCPU in the future. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/8xxx: Improvement to DDR parametersyork
Changes for P2020DS DDR applies to other 8xxx platform Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enable DDR3 RDIMM supportyork
Enabled registered DIMMs using data from SPD. RDIMMs have registers which need to be configured before using. The register configuration words are stored in SPD byte 60~116 (JEDEC standard No.21-C). Software should read those RCWs and put into DDR controller before initialization. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enabled address hashing for 85xxyork
For 85xx silicon which supports address hashing, it can be activated by hwconfig. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enable quad-rank DIMMs.york
Previous code presumes each DIMM has up to two rank (chip select). Newer DDR controller supports up to four chip select on one DIMM. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Fix bug in memctrl interleaving & bank interleaving on cs0~cs4york
Verified on MPC8641HPCN with four DDR2 dimms. Each dimm has dual rank with 512MB each rank. Also check dimm size and rank size for memory controller interleaving Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enabled hwconfig for memory interleavingKumar Gala
Replace environmental variables memctl_intlv_ctl and ba_intlv_ctl with hwconfig parameters. The syntax is setenv hwconfig "fsl_ddr:ctlr_intlv=<mode>,bank_intlv=<mode>" The mode values for memory controller interleaving are cacheline page bank superbank The mode values for bank interleaving are cs0_cs1 cs2_cs3 cs0_cs1_and_cs2_cs3 cs0_cs1_cs2_cs3 Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/p4080: Add workaround for erratum CPU22Kumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/p4080: Add workaround for errata SERDES8Kumar Gala
Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/p4080: Add support for initializing SERDESKumar Gala
Add support for initializing the SERDES blocks on CoreNet style QoriQ devices and the p4080 specific SERDES tables to know which actual componetns are enabled. Additionally, split out the Frame Manger (FMAN) into its specific ethernet ports instead of gross level of the full FMAN. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/85xx: Add support to initialize LIODN registers and portalsKumar Gala
On the new QorIQ/CoreNet based platforms we need to initialize the "portals" as access into the Data Path subystem as well as Logical IO Device Numbers (LIODN) that are used for the IOMMU (PAMU). Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/p4080: Add support for CPC(Corenet platform cache) on CoreNet platformsKumar Gala
The CoreNet style platforms can have a L3 cache that fronts the memory controllers. Enable that cache as well as add information into the device tree about it. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Dave Liu <daveliu@freescale.com> Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/85xx: Move INIT_RAM_ADDR physical address to 36-bit spaceyork
If 36-bit physical address is used, move the INIT_RAM_ADDR to higher address. This frees the low 4GB address space for better use. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/fsl_fman: Add initial fman immap structuresKumar Gala
Add basic structures for Frame Manager on P4080/P3041/P5020 devices Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/85xx: Add additional p4080 platform related defines/structsKumar Gala
* Added PCIE4 address, offset, DEVDISR & LAW target ID * Added new p4080 DDR registers and defines to immap * Add missing corenet platform DEVDISR related defines * Updated ccsr_gur to include LIODN registers * Add RCWSR defines * Added Basic qman, pme, bman immap structs * Added SATA related offsets & addresses * Added Frame Manager 1/2 offsets & addresses * Renamed CONFIG_SYS_TSEC1_OFFSET to CONFIG_SYS_FSL_FM1_DTSEC1_OFFSET * Added various offsets and addresses that where missing Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-24cmd_usage(): simplify return code handlingWolfgang Denk
Lots of code use this construct: cmd_usage(cmdtp); return 1; Change cmd_usage() let it return 1 - then we can replace all these ocurrances by return cmd_usage(cmdtp); This fixes a few places with incorrect return code handling, too. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-07-24Merge branch 'master' of git://git.denx.de/u-boot-ppc4xxWolfgang Denk
2010-07-23ppc4xx: Add ECC status info to machine-check exception for IBM DDR2 coreStefan Roese
Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23ppc4xx: Add "ecctest" command to test/simulate ECC errorsStefan Roese
This patch adds the "ecctest" command to test and simulate ECC errors (single bit and/or double bit) while running from SDRAM. Currently only the IBM DDR2 controller is supported (405EX, 440SP(e), 460EX/GT). This is done by copying and calling functions, modifying the SDRAM controller operation mode, in internal SRAM/OCM. For correctable ECC errors (single bit) only the status will be printed since the DDR2 controller doesn't provide the faulting address: => ecctest 1000000 1 Using address 01000000 for 1 bit ECC error injection ECC: Correctable error Uncorrectable ECC errors (double bit) will also display the faulting address: => ecctest 1000000 2 Using address 01000000 for 2 bit ECC error injection ECC: Uncorrectable error at 0x0001000000 To enable this "ecctest" function you need to define CONFIG_CMD_ECCTEST in the board config header. Tested on katmai and t3corp. Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23ppc4xx: DDR/ECC: Use correct macros to clear error statusStefan Roese
Use the correct macro instead of the hardcoded 0x4c to clear the ECC status in the 440/460 DDR(2) error status register after ECC initialization. Also the non-440 parts (405EX(r) right now) and the IBM DDR PPC variants (440GX) use a different registers to clear this error status. Use the correct ones. Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23ppc4xx: Only define DDR2 registers for the correct PowerPC variantsStefan Roese
Make sure that some SDRAM/DDR2 registers are only defined for the PPC variants really implementing those registers. Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23ppc4xx: Add CONFIG_DDR_RFDC_FIXED to allow board specific RFDC valuesStefan Roese
Using this define, a board can define an opimized RFDC value and use the auto calibration code to "tune" the remaining DDR2 controller calibration register. Signed-off-by: Stefan Roese <sr@denx.de>