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* Blackfin: gpio: use common usage funcMike Frysinger2010-07-29-4/+2
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: jtag-console: handle newline stuffingMike Frysinger2010-07-25-9/+32
| | | | | | | | | | Serial devices currently have to manually stuff \r after every \n found, but this is a bit more difficult with the jtag console since we process everything in chunks of 4 bit. So we have to scan & stuff the whole string rather than what most serial drivers do which is output on a byte per byte basis. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: jtag-console: add debug markersMike Frysinger2010-07-25-1/+27
| | | | | | | | | | While we're in here, add some useful debug points. We need custom debug statements because we need the output to only go to the serial port. If we used the standard debug helpers, the output would also go to the stdout (which would be the jtag console) and make it hard to figure out what is going where exactly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: jtag-console: robustify against missing peerMike Frysinger2010-07-25-8/+32
| | | | | | | | | If the other side isn't listening, we should reset the state to ignore the whole message and not just the part we missed. This makes it easier to connect at any time to the jtag console without worrying about the two sides getting out of sync and thus sending garbage back and forth. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: serial: convert to portmux frameworkMike Frysinger2010-07-13-0/+19
| | | | | | | | Use the new portmux framework to handle the details when possible. Unfortunately, we cannot yet use this in the standalone initialization logic, so we need to keep around the old portmux writes for now. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: unify custom gpio commandsMike Frysinger2010-07-05-0/+121
| | | | | | | Now that we have a unified gpio layer, the misc partial gpio commands can be unified and made complete (support all possible gpios). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: import gpio/portmux layer from LinuxMike Frysinger2010-07-05-0/+855
| | | | | | | | | The current pinmux handling has spread throughout Blackfin drivers and board code and is getting hideous to maintain. So import the gpio and portmux layer from the Blackfin Linux code. This should spur a serious of cleanups across the Blackfin tree. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: set up simple NMI handlers for anomaly 05000219Mike Frysinger2010-07-05-1/+34
| | | | | | | Older on-chip Blackfin bootroms do not create a dummy NMI handler, so set up one ourselves when anomaly 05000219 applies. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: expand EVT1 usage documentation a bit moreMike Frysinger2010-07-05-1/+6
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: implement bootcount supportMike Frysinger2010-07-05-0/+35
| | | | | | | | The default storage location for bootcount is EVT0. This version uses one 32bit value and combines the magic/count value in the upper/lower 16bits. If there is demand for more, should be easy to do. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up trace buffer handling when crashingMike Frysinger2010-07-05-28/+49
| | | | | | | | | | Avoid banging on the trace MMRs when debugging is disabled, avoid calling the funcs multiple times in a row, disable the trace buffer earlier in the exception handler to avoid eating more user entries, and dump the buffer before calling the kgdb hook. This way we maximize useful debugging info up front rather than needing external tools (like gdb/serial/etc...). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hush shell dynamically allocates (and re-allocates) memory for the argument strings in the "char *argv[]" argument vector passed to commands. Any code that modifies these pointers will cause serious corruption of the malloc data structures and crash U-Boot, so make sure the compiler can check that no such modifications are being done by changing the code into "char * const argv[]". This modification is the result of debugging a strange crash caused after adding a new command, which used the following argument processing code which has been working perfectly fine in all Unix systems since version 6 - but not so in U-Boot: int main (int argc, char **argv) { while (--argc > 0 && **++argv == '-') { /* ====> */ while (*++*argv) { switch (**argv) { case 'd': debug++; break; ... default: usage (); } } } ... } The line marked "====>" will corrupt the malloc data structures and usually cause U-Boot to crash when the next command gets executed by the shell. With the modification, the compiler will prevent this with an error: increment of read-only location '*argv' N.B.: The code above can be trivially rewritten like this: while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { ... Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
* blackfin: Move cpu/blackfin/* to arch/blackfin/cpu/*Peter Tyser2010-04-13-0/+2757
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>