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>
- 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>
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.
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 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>
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.
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.
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>
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>
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>
David Brownell
Thomas Kindler
Michael Bruck
Øyvind Harboe
Zachary T Welch