path: root/arch/blackfin/cpu
AgeCommit message (Collapse)Author
2010-10-02Blackfin: cmd_gpio: accept upper case pin namesMike Frysinger
The intention all along was to accept pin names irrelevant of their case. But I guess I forgot to test/implement support for that. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-02Blackfin: cmd_gpio: return gpio value to callerMike Frysinger
Make the GPIO command usable in a scripting environment by returning the GPIO value rather than always 0. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-02Blackfin: cmd_gpio: document/extend input sub-optionMike Frysinger
The input sub command was missing from the help text, and it didn't show the actual value currently read on the GPIO. This allows people to read the value of input pins. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-07-29Blackfin: gpio: use common usage funcMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-07-25Blackfin: jtag-console: handle newline stuffingMike Frysinger
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>
2010-07-25Blackfin: jtag-console: add debug markersMike Frysinger
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>
2010-07-25Blackfin: jtag-console: robustify against missing peerMike Frysinger
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>
2010-07-13Blackfin: serial: convert to portmux frameworkMike Frysinger
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>
2010-07-05Blackfin: unify custom gpio commandsMike Frysinger
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>
2010-07-05Blackfin: import gpio/portmux layer from LinuxMike Frysinger
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>
2010-07-05Blackfin: set up simple NMI handlers for anomaly 05000219Mike Frysinger
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>
2010-07-05Blackfin: expand EVT1 usage documentation a bit moreMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-07-05Blackfin: implement bootcount supportMike Frysinger
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>
2010-07-05Blackfin: clean up trace buffer handling when crashingMike Frysinger
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>
2010-07-04Make sure that argv[] argument pointers are not modified.Wolfgang Denk
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>
2010-04-13blackfin: Move cpu/blackfin/* to arch/blackfin/cpu/*Peter Tyser
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>