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>

This patch adds support for Linux kernels using the Flat Device Tree.
It also re-defines the default environment settings for booting Linux
with the FDT blob.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

This patch adds initialization of the UPMC RAM to support up to two
Intel 82527 compatible CAN controller on the TQM85xx modules.

Signed-off-by: Thomas Waehner <thomas.waehner@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

The CS0_BNDS register is now set according to the detected
memory size.

Signed-off-by Martin Krause <martin.krause@tqs.de>

This patch fixes the re-calculation of the automatic chip select
configuration for boards with two populated FLASH banks.

Signed-off-by: Martin Krause <martin.krause@tqs.de>

The 'N' type Spansion flashes (S29GLxxxN series) have bigger sectors,
than the formerly used 'M' types (S29GLxxxM series), so the flash layout
needs to be changed -> new start address of the environment. The macro
definition CONFIG_TQM_FLASH_N_TYPE is undefined by default and must be
defined for boards with 'N' type flashes.

Signed-off-by: Martin Krause <martin.krause@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

Do not configure port pins PD30/PD31 as SCC1 TxD/RxD except for the TQM8560
board. On the other TQM85xx boards (TQM8541 and TQM8555) SCC1 is not used
as serial interface anyway. Worse, on some board variants configuring the
pins for SCC1 leads to short circuits (for example on the TQM8541-BG).

Signed-off-by: Martin Krause <martin.krause@tqs.de>

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

The submitted patch seems to have been more up-to-date, but an older patch was
already in the repository.  This patch encompasses the differences

Taken entirely from Sergei Poselenov <sposelenov@emcraft.com>

Signed-off-by: Andy Fleming <afleming@freescale.com>

This is a re-write of the NAND FSL UPM driver using the more universal
hwcontrol callback (instead of the cmdfunc callback). Here is a brief
list of furher modifications:

- For the time being, the UPM setup writing the UPM array has been
  removed from the driver and must now be done by the board specific
  code.

- The bus width definition in "struct fsl_upm_nand" is now in bits to
  comply with the corresponding Linux driver and 8, 16 and 32 bit
  accesses are supported.

- chip->dev_read is only set if fun->dev_ready != NULL, which is
  required for boards not connecting the R/B pin.

- A few issue have been fixed with MxMR bit manipulation like in the
  corresponding Linux driver.

Note: I think the "io_addr" field of "struct fsl_upm" could be removed
      as well, because the address is already determined by
      "nand->IO_ADDR_[RW]", but I'm not 100% sure.

This patch has been tested on a TQM8548 modules with the NAND chip
Micron MT29F8G08FABWP.

This patch is based on the following patches posted to this list a few
minutes ago:

  PPC: add accessor macros to clear and set bits in one shot
  83xx/85xx/86xx: add more MxMR local bus definitions

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com>

The boot output is now aligned poperly with other boot output
lines, e.g.:

  FLASH: 128 MB
  L2:    512 KB enabled

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

PPC: add accessor macros to clear and set bits in one shot

This patch adds macros from linux/include/asm-powerpc/io.h to clear and
set bits in one shot using the in_be32, out_be32, etc. accessor functions.
They are very handy to manipulate bits it I/O registers.

This patch is required for my forthcoming FSL NAND UPM driver re-write and
the support for the TQM8548 module.

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>

83xx/85xx/86xx: add more MxMR local bus definitions

This patch adds more macro definitions for the UPM Machine Mode Registers
They are copied from "include/mpc82xx.h" to simplify the merge of all 8xxx
common local bus definitions into include/asm-ppc/fsl_lbc.h. They are
required for my forthcoming FSL NAND UPM driver re-write and the support
for the TQM8548 module.

This patch is based on the following two patches from Anton Vorontsov:

http://www.mail-archive.com/u-boot-users@lists.sourceforge.net/msg06511.html
http://www.mail-archive.com/u-boot-users@lists.sourceforge.net/msg06587.html



I leave coding style violation fixes, code beautification and name
corrections to somebody else ;-(.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

Merge mpc85xx.h's LBC defines to fsl_lbc.h. Also, adopt ACS names
from mpc85xx.h, so ACS_0b10 renamed to ACS_DIV4, ACS_0b11 to ACS_DIV2.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>

This patch moves Freescale Localbus defines out of mpc83xx.h, so we could
use it on MPC85xx and MPC86xx processors.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

The current cpu identification code is used just to return the name
of the processor at boot.  There are some other locations that the name
is useful (device tree setup).  Expose the functionality to other bits
of code.

Also, drop the 'E' suffix and add it on by looking at the SVR version
when we print this out.  This is mainly to allow the most flexible use
of the name.  The device tree code tends to not care about the 'E' suffix.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Currently, END_OF_RAM is used by the trap code to determine if
we should attempt to access the stack pointer or not. However,
on systems with a lot of RAM, only a subset of the RAM is
guaranteed to be mapped in and accessible.  Change END_OF_RAM
to use get_effective_memsize() instead of using the raw ram
size out of the bd.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>

Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>

Use correct field in block_dev_desc_t when writing interface type in
dev_print. Error introduced in 574b3195.

Also added fix from Martin Krause

Signed-off-by: Tor Krill <tor@excito.com>

Signed-off-by: Andre Schwarz <andre.schwarz@matrix-vision.de>

Removed unneeded command line history initialization.  Also, the original
code would access the 'initted' variable before relocation to SDRAM
which resulted in erratic behavior since the bss is not initialized when
executing from flash.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

This patch simplifies post_word_{load,store} by using the preprocessor
to eliminate redundant, copy-and-pasted code.

Signed-off-by: Grant Erickson <gerickson@nuovations.com>

On AD7414 the first value upon bootup is not read correctly.
This is most likely because of the 800ms update time of the
temp register in normal update mode. To get current values
each time we issue the "dtt" command including upon powerup
we switch into one-short mode.

This patch fixes the problem on AD7414 equipped boards (Sequoia,
Canyonlands etc), that temp value printed in the bootup log was
incorrect.

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

This is pretty incomplete...it doesn't handle reading the environment
before relocation, it doesn't support redundant environment, and it
doesn't support embedded environment. But apart from that, it does
seem to work.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

This adds a new command, "sf" which can be used to manipulate SPI
flash. Currently, initialization, reading, writing and erasing is
supported.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

This adds a new SPI flash subsystem.

Currently, only AT45 DataFlash in non-power-of-two mode is supported,
but some preliminary support for other flash types is in place as
well.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

This adds a driver for the SPI controller found on most AT91 and AVR32
chips, implementing the new SPI API.

Changed in v4:
  - Update to new API
  - Handle zero-length transfers appropriately. The user may send a
    zero-length SPI transfer with SPI_XFER_END set in order to
    deactivate the chip select after a series of transfers with chip
    select active. This is useful e.g. when polling the status
    register of DataFlash.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

This patch gets rid of the spi_chipsel table and adds a handful of new
functions that makes the SPI layer cleaner and more flexible.

Instead of the spi_chipsel table, each board that wants to use SPI
gets to implement three hooks:
  * spi_cs_activate(): Activates the chipselect for a given slave
  * spi_cs_deactivate(): Deactivates the chipselect for a given slave
  * spi_cs_is_valid(): Determines if the given bus/chipselect
    combination can be activated.

Not all drivers may need those extra functions however. If that's the
case, the board code may just leave them out (assuming they know what
the driver needs) or rely on the linker to strip them out (assuming
--gc-sections is being used.)

To set up communication parameters for a given slave, the driver needs
to call spi_setup_slave(). This returns a pointer to an opaque
spi_slave struct which must be passed as a parameter to subsequent SPI
calls. This struct can be freed by calling spi_free_slave(), but most
driver probably don't want to do this.

Before starting one or more SPI transfers, the driver must call
spi_claim_bus() to gain exclusive access to the SPI bus and initialize
the hardware. When all transfers are done, the driver must call
spi_release_bus() to make the bus available to others, and possibly
shut down the SPI controller hardware.

spi_xfer() behaves mostly the same as before, but it now takes a
spi_slave parameter instead of a spi_chipsel function pointer. It also
got a new parameter, flags, which is used to specify chip select
behaviour. This may be extended with other flags in the future.

This patch has been build-tested on all powerpc and arm boards
involved. I have not tested NIOS since I don't have a toolchain for it
installed, so I expect some breakage there even though I've tried
fixing up everything I could find by visual inspection.

I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and
DataFlash drivers posted as a follow-up. I'd like some help testing
other boards that use the existing SPI API.

But most of all, I'd like some comments on the new API. Is this stuff
usable for everyone? If not, why?

Changed in v4:
  - Build fixes for various boards, drivers and commands
  - Provide common struct spi_slave definition that can be extended by
    drivers
  - Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate
  - Make default bus and mode build-time configurable
  - Override default SPI bus ID and mode on mx32ads and imx31_litekit.

Changed in v3:
  - Add opaque struct spi_slave for controller-specific data associated
    with a slave.
  - Add spi_claim_bus() and spi_release_bus()
  - Add spi_free_slave()
  - spi_setup() is now called spi_setup_slave() and returns a
    struct spi_slave
  - soft_spi now supports four SPI modes (CPOL|CPHA)
  - Add bus parameter to spi_setup_slave()
  - Convert the new i.MX32 SPI driver
  - Convert the new MC13783 RTC driver

Changed in v2:
  - Convert the mpc8xxx_spi driver and the mpc8349emds board to the
    new API.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Tested-by: Guennadi Liakhovetski <lg@denx.de>

AVR32 and AT91SAM9 both have their own identical definitions of
container_of() taken from the Linux kernel. Move it to common.h so
that all architectures can use it.

container_of() is already used by some drivers, and will be used
extensively by the new and improved SPI API.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

Spotted by Dean Capindale.

Systems that support open-drain GPIO properly are allowed provide an
empty I2C_TRISTATE define. However, this means that we need to be
careful not to drive SDA low when the slave is expected to respond.

This patch adds a missing I2C_SDA(1) to read_byte() required to
tristate the SDA line on systems that support open-drain GPIO.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

* The cfi_flash.c memset fix actual allows the board to boot so there is
  a bit more going on here than just resolving warnings associated with
  uninitialized variables.

* include/asm/bitops.h:302: warning: '__swab32p' is static but used in
  inline function 'ext2_find_next_zero_bit' which is not static

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Currently, END_OF_RAM is used by the trap code to determine if
we should attempt to access the stack pointer or not. However,
on systems with a lot of RAM, only a subset of the RAM is
guaranteed to be mapped in and accessible.  Change END_OF_RAM
to use get_effective_memsize() instead of using the raw ram
size out of the bd.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>

If common.h isn't first we can get CONFIG_ options defined in the
board config file ignored.  This can cause an issue if any of those
config options impact the size of types of data structures
(eg CONFIG_PHYS_64BIT).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Add logbuffer to reserved LMB areas to prevent initrd allocation
from overlaping with it.

Make sure to use correct logbuffer base address.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>