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10 Commits

Author SHA1 Message Date
Jeff Johnston aa26b78462 or1k: UART also accept timeout interrupt 
- The UART interrupt only handled receiver FIFO full interrupts, but we
  also want to handle timeout interrupts.

    * or1k/or1k_uart.c: Fix interrupts
 2015-05-27 13:30:20 +02:00
Jeff Johnston 58e5719a0e Bug fix in timer for or1k 
- Properly set the interrupt pending flag in the timer mode register.

    * or1k/timer.c: Properly set interrupt flags
 2015-05-27 13:30:20 +02:00
Jeff Johnston b46d3b5536 Store entire context for or1k 
- Store the exception program counter (from EPCR) and exception status
  register (from ESR) also during the exception. A runtime system may
  replace them thereby to implement a thread switch.

    * or1k/exception-asm.S: Store missing state
 2015-05-27 13:30:20 +02:00
Jeff Johnston a6342974b0 Fix exception stack frame for or1k 
- We do not need a red zone here, as we do not operate on the current
  stack, but always use the clear exception stack. Also reserve two
  extra words for the context to store EPCR and ESR.

    * or1k/crt0.S: Fix exception stack frame
    * or1k/exception-asm.S: ditto
 2015-05-27 13:30:19 +02:00
Jeff Johnston 132030fcf2 Fix interrupt handling for or1k. 
- During interrupt handling the PICSR, table pointers and current
  interrupt line have been saved in incorrect registers and/or stored on
  the stack.

- Save the pointer in r16/r18, PICSR in r20 and the current interrupt
  line in r22. Those are callee-saved registers, so that the register
  values will be preserved.

        * or1k/interruts-asm.S: Change registers to callee-saved.
 2015-05-27 13:30:19 +02:00
Corinna Vinschen 19e714bcee * or1k/or1k_uart.c: Write bugfix and cleanup/documentation. 
* or1k/or1k_uart.h: Cleanup.
 2015-02-11 13:33:40 +00:00
Corinna Vinschen f91272b8c2 * or1k/include/or1k-sprs.h: New auto-generated header file. 2015-01-14 09:56:02 +00:00
Jeff Johnston ab42ec30e6 2014-12-15 Stefan Wallentowitz <stefan.wallentowitz@tum.de> 
* or1k/Makefile.in: Build and install board libraries
        * or1k/board.h: New file
        * or1k/boards/README: New file
        * or1k/boards/atlys.S: New file
        * or1k/boards/de0_nano.S: New file
        * or1k/boards/ml501.S: New file
        * or1k/boards/ml509.S: New file
        * or1k/boards/optimsoc.S: New file
        * or1k/boards/or1ksim-uart.S: New file
        * or1k/boards/or1ksim.S: New file
        * or1k/boards/ordb1a3pe1500.S: New file
        * or1k/boards/ordb2a.S: New file
        * or1k/boards/orpsocrefdesign.S: New file
        * or1k/boards/tmpl.S: New file
        * or1k/boards/tmpl.c: New file
 2014-12-15 20:22:28 +00:00
Jeff Johnston 68a9101237 2014-12-15 Stefan Wallentowitz <stefan.wallentowitz@tum.de> 
* or1k/Makefile.in: Add libor1k
        * or1k/README: New file
        * or1k/caches-asm.S: New file
        * or1k/exceptions-asm.S: New file
        * or1k/exceptions.c: New file
        * or1k/impure.c: New file
        * or1k/include/or1k-nop.h: New file
        * or1k/include/or1k-support.h: New file
        * or1k/interrupts-asm.S: New file
        * or1k/interrupts.c: New file
        * or1k/mmu-asm.S: New file
        * or1k/or1k-internals.h: New file
        * or1k/or1k_uart.c: New file
        * or1k/or1k_uart.h: New file
        * or1k/outbyte.S: New file
        * or1k/sbrk.c: New file
        * or1k/sync-asm.S: New file
        * or1k/syscalls.c: New file
        * or1k/timer.c: New file
        * or1k/util.c: New file
 2014-12-15 20:17:39 +00:00
Jeff Johnston d1219c0e89 2014-12-15 Stefan Wallentowitz <stefan.wallentowitz@tum.de> 
* README: Add details about or1k.
        * configure.in: Add or1k/or1knd
        * configure: Regenerated.
        * or1k/aclocal.m4: New file.
        * or1k/configure: Ditto.
        * or1k/Makefile.in: New file
        * or1k/configure.in: New file
        * or1k/crt0.S: New file
        * or1k/include/or1k-asm.h: New file
 2014-12-15 20:09:28 +00:00