We need a TLB entry to call get_ram_size(); the common code doesn't create
one until *after* fixed_sdram() has determined the size. So we set up tlbs
for the max possible size and tear them down once we're done with
get_ram_size(); the common 85xx code will then set up a final set of tlb
entries for the *actual* detected size of ddr.
This prevents us from having TLB entries that are larger than DDR sitting
around for very long, which is not a recommended scenario.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This patch exposes more registers which can be used by the DDR drivers or
interactive debugging. U-boot doesn't use all the registers in DDRC.
When advanced tuning is required, writing to those registers is needed.
Add writing to cdr1, cdr2, err_disable, err_int_en and debug registers
Add options to override rcw, address parity to RDIMMs.
Use array for debug registers.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Correct initdram to use phys_size_t to represent the size of
dram; instead of changing this all over the place, and correcting
all the other random errors I've noticed, create a
common initdram that is used by all non-corenet 85xx parts. Most
of the initdram() functions were identical, with 2 common differences:
1) DDR tlbs for the fixed_sdram case were set up in initdram() on
some boards, and were part of the tlb_table on others. I have
changed them all over to the initdram() method - we shouldn't
be accessing dram before this point so they don't need to be
done sooner, and this seems cleaner.
2) Parts that require the DDR11 erratum workaround had different
implementations - I have adopted the version from the Freescale
errata document. It also looks like some of the versions were
buggy, and, depending on timing, could have resulted in the
DDR controller being disabled. This seems bad.
The xpedite boards had a common/fsl_8xxx_ddr.c; with this
change only the 517 board uses this so I have moved the ddr code
into that board's directory in xpedite517x.c
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Also, change this code to use phys_size_t instead of long int.
Using common naming for this function will enable us to use the common
initdram() for 85xx going forward. Other than the type change,
this is just a code rearrange.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This is in preparation for adding one common 8xxx board_add_ram_info()
function for all 8xxx boards
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The ecm variable in sdram.c was being declared for all 8548, but only
used by specific 8548 boards, so we make that variable require those
specific boards, too
The nand code was using an index "i" into a table, and then re-using "i"
to set addresses for each upm. However, then it relied on the old value
of i still being there to enable things. Changed the second "i" to "j"
Signed-off-by: Andy Fleming <afleming@freescale.com>
This patch adds the workaround for erratum DDR20 according to MPC8548
Device Errata document, Rev. 1: "CKE signal may not function correctly
after assertion of HRESET". Furthermore, the bug DDR19 is fixed in
processor version 2.1 and the work-around must be removed.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
This patch add support for the 1 GiB DDR2-SDRAM on the TQM8548_AG
module.
Signed-off-by: Jens Gehrlein <sew_s@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
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>
This patch adds basic support for the TQM8548 module from TQ-Components
(http://www.tqc.de/) including DDR2 SDRAM initialisation and support for
eTSEC 3 and 4
Furthermore Flash buffer write has been enabled to speed up output to
the Flash by approx. a factor of 10.
Signed-off-by: Thomas Waehner <thomas.waehner@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Move all TQM board directories to the vendor specific directory "tqc"
for modules from TQ-Components GmbH (http://www.tqc.de).
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
