Separates various groups of files to be built in logical succession.
In each layer, the core module (target.c, nand.c, etc.) is built _after_
their helper modules (e.g. image.c, nand_ecc.c) but _before_ any of
their drivers (e.g. arm966e.c, mx3_nand.c).

This allows problems introduced at the bottom of the stack to result
in build failures as soon as possible, as the helpers and core should
wrap portions of them.

Various cleanups of ETM related code.

 - Saner error return paths
 - Simplify arm7_9 init ... no need for extra zeroing!
 - Shrink some lines
 - Tweak some diagnostics
 - Use shorter name for ETM struct type.
 - Don't exit()

and similar.  The diagnostics look forward to having
this ETM code work with more than just ARM7/ARM9.

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

The "ARM720 uses the new inheritance/nesting scheme" patch
wrongly scrubbed a calloc() from arm720t_target_create().

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

Start switching MMU handling over to a more sensible scheme.
Having an mmu() method enables MMU-aware behaviors.  Not having
one kicks in simpler ones, with no distinction between virtual
and physical addresses.

Currently only a handful of targets have methods to read/write
physical memory:  just arm720, arm920, and arm926.  They should
all initialize OK now, but the arm*20 parts don't do the "extra"
stuff arm926 does (which should arguably be target-generic).

Also simplify how target_init() loops over all targets by making
it be a normal "for" loop, instead of scattering its three parts
to the four winds.

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

General rule, this is all board-specific and doesn't belong
in target config files.  Some of these were just cosmetic.

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

Here's a patch for the double-reset problem on STM32.  I've tested
downloading and debugging with GDB and Eclipse, and everything seems
to work fine.

This effectively sets reset_config to none. trst_only would also
be ok, but that's better left to a board configuration file since
not all boards wire it up.

The NVIC is used to trigger reset, which at least on this chip also
pulses nSRST so the whole system does get rest -- exactly once.

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

First cut of these commands. Øyvind tinkered a bit with
the number parsing to bring it up to speed + rebased it.
Ready for testing.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

Switch to new commands in config scripts

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

Add the missing "target/" prefix for scripts in the
target folder.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

 - improve some names -- a "default" prefix is not descriptive
 - add doxygen @todo entries for some issues
 - avr8 isn't ever going to need those MMU hooks

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

mmu() works; virt2phys() fails and logs an error.

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

mmu() works; virt2phys() fails and logs an error.

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

And shrink a few too-long lines.

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

The httpd is work in progress...

No mime type set by default. Let the browser guess.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

Remove forward declarations by reordering command registration.

Removes useless declarations, moving the handler functions to appear
before their use in the (much bigger) command registriation function.

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>