Add helpers to manage adding entries to the helptext list.
Adds support for arbitrarily nested commands.

The command_name function returns a malloced string for a given
command and its parents.  This can be used to display a message
to the user, but it is used internally to handle registration
and syntax errors.  This helps permit arbitrary command nesting.

Use continuation characters to wrap the help command into 80 columns.

Documenting command handler parameters is redundant and pointless.

Removes forward declarations by moving command registration after
defintion of the command handlers.

Add 'const' keyword to 'char *' parameters to allow command handlers to
pass constant string arguments.  These changes allow the 'args' command
handler to be changed to 'const' in a subsequent patch.

Subsequent patches expect all command handlers to use a uniform
parameter naming scheme.  In the entire tree, these two files used
standard 'argv' instead of our non-standard 'args'.  This patch opts
to reduces the noise required to unify the command handlers, using
dominant 'args' form.

A future patch may be used to convert us back to the standard argv, but
that requires coordination with all developers to minimize disruptions.

Use unsigned type for number of arguments.

This patch also improves the signature of run_command function.

Use unsigned type for line number in log_callback_fn signature.

Update timeval_add_time to use long int; implement timeval_add with it.
Update timeval_ms to check gettimeofday return value, return int64_t.

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>