Remove server command declarations, make handler routines static.

Contrary to my previous assessment, some opportunities to remove forward
declarations were overlooked.  Remove them by moving the definitions
of the command registration and interface structure to the end of files.

This patch removes the last batch of forward references from the tree,
moving the target command registration routines to the end of the file.

Remove useless forward declarations.
Moves command registrations to end of files.
Moves flash structure definitions to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registrations to end of files.
Moves flash structure definitions to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves flash structure definitions to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registrations to end of files.
Moves flash structure definitions to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registration to end of file.
Moves flash structure definitions to end of files.

Changes a few references to global flash structure to local refs.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registrations to end of files.
Moves flash structure definitions to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registration to end of files.
Moves flash structure definition to end of files.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

Remove useless forward declarations.
Moves command registration to end of file.
Moves flash structure definition to end of file.

Signed-off-by: Zachary T Welch <zw@superlucidity.net>

This patch introduced a bug preventing flash writes from working
on Cortex-M3 targets like the STM32.  Moreover, it's the wrong
approach for handling no-MMU targets.

The right way to handle no-MMU targets is to provide accessors
for physical addresses, and use them everywhere; and any code
which tries to work with virtual-to-physical mappings should use
a identity mapping (which can be defaulted).

And ... we can tell if a target has an MMU by seeing if it's
got an mmu() method.  No such methood means no MMU.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

It's been about a year since these were deprecated and, in most
cases, removed.  There's no point in carrying that documentation,
or backwards compatibility for "jtag_device" and "jtag_speed",
around forever.  (Or a few remnants of obsolete code...)

Removed a few obsolete uses of "jtag_speed":

 - The Calao stuff hasn't worked since July 2008.  (Those Atmel
   targets need to work with a 32KHz core clock after reset until
   board-specific init-reset code sets up the PLL and enables a
   faster JTAg clock.)
 - Parport speed controls don't actually work (tops out at about
   1 MHz on typical HW).
 - In general, speed controls need to live in board.cfg files (or
   sometimes target.cfg files), not interface.cfg ...

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Rename the "Drivers, Options, and Commands" sections to be
just "Driver List" matching the earlier reference.  Add an
example of parallel CFI flash.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Remove extern keywords from function prototypes and wrap long lines.

Removes 'extern' keyword from function prototypes and wraps long lines.

Removes 'extern' keyword from function declarations in header filess.

Removes 'extern' keywords from function prototypes in the flash headers.
Wraps long lines to fit into 80 columns.

Adds multiple inclusion protection for s3c2xx_nand.h.

Removes the 'extern' keyword from function declarations.
Wraps long prototypes to fit into 80 columns.

Fixes documentation for jtag_tap_s::{,has}idcode fields.

Remove all useless 'extern' keywords from function prototypes.
Wraps long lines for readability.

The "$ocd_HOSTOS" variable was wrongly documented.  Fix its
documentation, and its value on Linux.

Shrink a few of the too-long lines.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Add comments (Doxygen and normal), remove unused code,
shrink some overlong lines.  Get rid of a forward decl.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

This patch changes the duration_* API in several ways.  First, it
updates the API to use better names.  Second, string formatting has
been removed from the API (with its associated malloc).  Finally, a
new function added to convert the time into seconds, which can be
used (or formatted) by the caller.  This eliminates hidden calls to
malloc that require associated calls to free().

This patch also removes the useless extern keyword from prototypes,
and it eliminates the duration_t typedef (use 'struct duration').
These API also allows proper error checking, as it is possible for
gettimeofday to fail in certain circumstances.

The consumers have all been chased to use this new API as well, as
there were relatively few cases doing this type of measurement.
In most cases, the code performs additional checks for errors, but
the calling code looks much cleaner in every case.

Reduces confusion about location of associated routines and
reduces clutter in the arm11 header.

Removes extra whitespace around the lines touched by these changes.

Unneeded exports cause confusion about the module interfaces.
Make almost everything static in the arm11.c module.

Make several functions be static.  Shrink some of the overlong
lines.  Use pure tab indents in some places that mixed in spaces.
This gives a minor object code shrink (about 2% on amd64).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

The semantics of "-work-area-virt 0" (or phys) changed with
the patch to require specifying physical or virtrual work
area addresses.  Specifying zero was previously a NOP.  Now
it means that address zero is valid.

This patch addresses three related issues:

 - MMU-less processors should never specify work-area-virt;
   remove those specifications.  Such processors include
   ARM7TDMI, Cortex-M3, and ARM966.

 - MMU-equipped processors *can* specify work-area-virt...
   but zero won't be appropriate, except in mischievous
   contexts (which hide null pointer exceptions).

   Remove those specs from those processors too.  If any of
   those mappings is valid, someone will need to submit a
   patch adding it ... along with a comment saying what OS
   provides the mapping, and in which context.  Example,
   say "works with Linux 2.6.30+, in kernel mode".  (Note
   that ARM Linux doesn't map kernel memory to zero ...)

 - Clarify docs on that "-virt" and other work area stuff.

Seems to me work-area-virt is quite problematic; not every
operating system provides such static mappings; if they do,
they're not in every MMU context...

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Resolve serious bug inserted by the "target: require working
area for physical/virtual addresses to be specified" patch.
It forced use of (invalid) virtual addresses when the MMU
was disabled, and vice versa.

Observed to break at least Cortex-M3, ARM926, ARM7TDMI whenever
work areas are used, such as during bulk writes to flash, DDR2,
SRAM, and so on.

Also, fix overlong lines and whitespace goofs.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Removes check covered by new nand_command_get_device_by_num helper.
Reverses logic of probe check to further reduce indentation.

Removes redundant tests and reverses backwards logic to reduce the
indentation level in flash.c.

Move various embedded target structs to the beginnings of
their containers ... pretty much the way C++ or Obj-C
would for single inheritance.

This shrinks code that accesses those embedded structs by
letting common offsets use smaller instructions.  Sample
before/after sizes (on amd64):

  17181	    312	      0	  17493	   4455	arm920t.o
  16810	    312	      0	  17122	   42e2	arm920t.o

Where the "after" is the smaller number, with this patch
over the ones leveraging that embedding knowledge.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Remove most remaining uses of target->arch_info from ARM
infrastructure, where it hasn't already been updated.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Use target_to_armv7a() etc, replacing needless pointer traversals.
Stop using X->arch_info scheme in most ARMv7-A and Cortex-A8 code.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Use target_to_arm7_9(), replacing needless pointer traversals.

Also:  remove now-useless contents of arm7tdmi struct; it's
almost ready to be removed.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Use target_to_arm720(), replacing needless pointer traversals
and simplifying a bunch of nasty code.  Stop setting arch_info
for arm720 type parts, it's not used any longer.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Use target_to_xscale(), replacing needless pointer traversals
and simplifying a bunch of code.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>