source: rtems/c/src/lib/libbsp/powerpc/shared/ChangeLog @ ae1f243

2003-10-22      Joel Sherrill <joel@OARcorp.com>

        PR 510/bsps
        * irq/irq.h: Add extern C wrapper.

2003-09-29      Till Strauman <strauman@slac.stanford.edu>

        PR 497/bsps
        * bootloader/head.S: Disable code that returned to the firmware when
        the loader starts.

2003-09-26      Till Strauman <strauman@slac.stanford.edu>

        PR 496/bsps
        * startup/sbrk.c: New file.
        * startup/bspstart.c: This patch implements 'sbrk'
        for the powerpc-shared BSP to work around what's known as the
        '32Mb problem' in combination with run-time loaded code.
        GCC normally generates (PowerPC) code doing 'short jumps' which
        requires all text segments being in the same 32Mb area of memory.
        However, some run-time loaders use (e.g. heap-) memory violating the
        stated limitation on hardware with more than 32Mb of memory.
        (NOTE: portable loaders are probably not even aware of this
        GCC/CPU specific problem.)

        This patch implements a simple workaround: At boot time, the system is
        only provided with 32Mb of memory. The user is supposed to load all
        necessary modules prior to that limit being exhausted. Once that
        happens, newlib/malloc end up trying to 'sbrk()' for more memory and
        the implementation provided by this patch will then make the rest of
        the physical memory available.

2003-09-26  Till Straumann <strauman@slac.stanford.edu>

        PR 497/bsps
        * bootloader/head.S: Let the bootloader shut down the
        network interface. NOTE: this involves a PPCBug system
        call and will hence fail if other software is used
        to boot. Need to #undef USE_PPCBUG in such cases!
  
2003-09-04      Joel Sherrill <joel@OARcorp.com>

        * bootloader/bootldr.h, bootloader/em86.c, bootloader/em86real.S,
        bootloader/exception.S, bootloader/head.S, bootloader/lib.c,
        bootloader/misc.c, bootloader/mm.c, bootloader/pci.c,
        clock/p_clock.c, console/console.c, console/consoleIo.h,
        console/inch.c, console/keyboard.h, console/polled_io.c,
        include/bsp.h, irq/i8259.c, irq/irq.c, irq/irq.h, irq/irq_asm.S,
        irq/irq_init.c, motorola/motorola.c, motorola/motorola.h,
        openpic/openpic.c, openpic/openpic.h, pci/pci.c, residual/residual.c,
        start/start.S, startup/bspstart.c, vectors/vectors.h,
        vectors/vectors_init.c: URL for license changed.

2003-08-21      Till Strauman <strauman@slac.stanford.edu>

        PR 456/bsps
        * irq/irq.c: Fix race condition when installing an ISR.

2003-08-16      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * Makefile.am: Reflect having moved automake/.
        * bootloader/Makefile.am: Reflect having moved automake/.
        * clock/Makefile.am: Reflect having moved automake/.
        * console/Makefile.am: Reflect having moved automake/.
        * include/Makefile.am: Reflect having moved automake/.
        * irq/Makefile.am: Reflect having moved automake/.
        * motorola/Makefile.am: Reflect having moved automake/.
        * openpic/Makefile.am: Reflect having moved automake/.
        * pci/Makefile.am: Reflect having moved automake/.
        * residual/Makefile.am: Reflect having moved automake/.
        * start/Makefile.am: Reflect having moved automake/.
        * startup/Makefile.am: Reflect having moved automake/.
        * vectors/Makefile.am: Reflect having moved automake/.
        * vme/Makefile.am: Reflect having moved automake/.

2003-08-05      Till Strauman <strauman@slac.stanford.edu>

        PR 437/bsps
        * irq/irc.c: calls to bspIo/printk must not use '%i' format which is 
        apparently not supported 
        * pci/pci.c: calls to bspIo/printk must not use '%i' format which is
        apparently not supported 

2003-07-18      Till Straumann <strauman@slac.stanford.edu>

        PR 288/rtems
        * irq/irq_asm.S, startup/bspstart.c: _ISR_Nest_level is now properly
        maintained and any BSP which does not do so will trip a panic in the
        shared code.

2003-07-18      Till Straumann <strauman@slac.stanford.edu>

        PR 415/bsps
        * pci/detect_raven_bridge.c, startup/bspstart.c:
        This patch reverts enabling MCP interrupts for the motorola_powerpc
        BSPs. REASON: pci config space scanning (as e.g. done by the DEC
        Ethernet driver) would raise machine check exceptions.

2003-07-16      Greg Menke <gregory.menke@gsfc.nasa.gov>

        PR 428/bsps
        PR 432/bsps
        * bootloader/pci.c: Re-instated code that prevents remapping small
        IO regions, which if remapped would cause i8259 registers to move
        out from under the #define'd base addresses.
        * startup/bspstart.c: Reduced BAT2 PCI memory allocation to 256
        megs, I incorrectly had extended it which would cause problems with
        PCI devices that defined prefetchable memory.

2003-07-16      Greg Menke <gregory.menke@gsfc.nasa.gov>
        PR 432/bsps
        * bootloader/pci.c: Re-instated code that prevents remapping small
        IO regions, which if remapped would cause i8259 registers to move
        out from under the #define'd base addresses.
        * startup/bspstart.c: Reduced BAT2 PCI memory allocation to 256
        megs, I incorrectly had extended it which would cause problems with
        PCI devices that defined prefetchable memory.
        
2003-06-13      Greg Menke <gregory.menke@gsfc.nasa.gov>

        PR 405/bsps
        * bootloader/pci.c: Added support for configuring devices for pci
        busses > 0
        * pci/pci.c, pci/pci.h: Added FixupPCI() to store vectors in the
        INTERRUPT_LINE register of pci devices any # of hops away
        from the host processor.
        * motorola/motorola.c, motorola/motorola.h: Added interrupt
        routing tables in support of FixupPCI.  This is board-specific,
        each board will have to supply information for FixupPCI() to do
        anything for it.
        * startup/bspstart.c: Extended bat2 to cover entire PCI address space.
        * irq/irq.c, irq/irq.h: Added support for shared interrupts.
        Existing single hander vectors are undisturbed, a new function
        added to allow adding/removing handlers from a vector.

2003-06-13  Till Straumann <strauman@slac.stanford.edu>

        PR 415/bsps
        * include/bsp.h, pci/detect_raven_bridge.c, startup/bspstart.c:
        Support enabling MCP exceptions on the host bridge. This can
        be used for memory probing on the VME bus.

2003-04-15      Joel Sherrill <joel@OARcorp.com>

        PR 386/bsps
        * vme/vmeconfig.c: Removed declaration of _BSP_vme_bridge_irq.

2003-04-10  Till Straumann <strauman@slac.stanford.edu>

        PR 379/bsps
        * console/polled_io.c: libcpu provides 'printk' already.
        Therefore, the implementation in this file was removed (still
        used for the bootloader, though).  It now provides BSP_output_char()
        for libcpu's printk().
        * console/uart.c, console/uart.h: BSP_output_char_via_serial()
        prototype changed to match the BSP_output_char_function_type.  Note
        that the motorola BSPs use polled-io for the output_char routine, not
        the uart.c version. The latter can be used be other BSPs however
        (e.g. SVGM).
        * console/console.c, console/consoleIo.h, console/polled_io.c,
        irq/irq_init.c, openpic/openpic.c, pci/detect_raven_bridge.c:
        Unfortunately, the supported 'printk' format string subset of the
        polled-io and libcpu implementations are different - hence, a few
        format strings in the ppc/shared BSP were changed.

2003-04-10      Joel Sherrill <joel@OARcorp.com>

        PR 383/bsps
        * irq/irq.c: Fix bug introduced by conflicts in previous patches.

2003-03-25  Till Straumann <strauman@slac.stanford.edu>

        PR 360/bsps
        * irq/irq.c, irq/irq_init.c, openpic/openpic.c, openpic/openpic.h:
        BSP code had set the task priority register multiple times of
        the OpenPIC instead of setting the individual source priorities.
        This patch adds openpic_get_source_priority() and
        openpic_set_source_priority() calls and lets IRQ management code
        use them.

2003-03-25  Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * irq/irq.c, vme/VME.h, vme/vmeconfig.c: Fixes library dependency
        on the vmeUniverse driver. It is now possible to use the ppc/shared/irq
        code on non-VME BSPs without triggering linkage of the vmeUniverse
        driver.

2003-03-25  Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * irq/irq.c, vme/VME.h, vme/vmeconfig.c: Fixes library dependency
        on the vmeUniverse driver. It is now possible to use the ppc/shared/irq
        code on non-VME BSPs without triggering linkage of the vmeUniverse
        driver.

2003-03-18  Till Straumann <strauman@slac.stanford.edu>

        PR 356/bsps
        This patch makes RTEMS/powerpc/shared EABI compliant.
        * irq/irq_init.c, start/Makefile.am, start/start.S, startup/bspstart.c,
        startup/pgtbl_setup.c, vectors/vectors.h, vectors/vectors_init.c:
        zero_bss() should clear not only bss but sbss and sbss2
        also (this is probably a bugfix, as sbss/sbss2 are
        probably used even if -msdata=eabi is not specified).
        * start/rtems_crti.S: New file which must
        be linked immediately after ecrti.o. rtems_crti.o contains
        a code snippet who lets __init() return immediately. Also,
        a new entry point '_init' to the C++ Ctors is generated
        for use by the RTEMS Thread_Handler.

2003-02-20      Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * console/polled_io.c, console/reboot.c, irq/irq.c, irq/irq_asm.S,
        irq/irq_init.c, openpic/Makefile.am, startup/linkcmds,
        vectors/vectors.S, vectors/vectors_init.c:
          - install the 'openpic.h' and 'pci.h' headers 
          - avoid a name clash by renaming 'vsprintf' & friends
            to 'k_vsprintf' etc.
          - let 'rtemsReboot' print a stack trace (in case an 'assert' failed)
          - irq.c:
             * fix: remove implicit assumption that ISA interrupt vectors start
                    at 0
             * add BSP hook to let a VME interrupt acknowledge the PCI/openpic
               IRQ. (SEE ALSO THE ppc-sharedbsp-vme.diff patch)
          - fix: EABI compliance; isr/exception lowlevel handlers must not
                 clobber R2 or R13
          - fix: openpic_init was called with the polarity/senses tables
                 swapped (fixed wrong order of arguments)
          - cosmetics: use new _read_SPRXX() _write_SPRXX() macros

2003-02-20      Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * startup/pgtbl_setup.c, startup/pgtbl_activate.c: New files
        * startup/Makefile.am, startup/bspstart.c, startup/linkcmds:
        Let the powerpc/shared (+derived) BSPs use pagetable support
        from libcpu.

2003-02-20      Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * vme/.cvsignore, vme/Makefile.am, vme/VME.h, vme/VMEConfig.h,
        vme/vmeconfig.c: Add glue to the powerpc/shared BSP to use
        the vmeUniverse VME-PCI bridge driver.

2003-02-20      Till Straumann <strauman@slac.stanford.edu>

        PR 349/bsps
        * console/console.c, console/uart.c, console/uart.h: implement
        IOCTLs for the serial (UART) console to install/retrieve a BREAK-IRQ
        callback.  The callback routine (if installed) is invoked from the
        UART ISR when a BREAK interrupt is detected.  This can be used
        e.g. to enforce a "hotkey" reboot a la vxWorks Ctrl-X (although we
        use the serial line break condition) NOTE: The callback runs in
        ISR context.  

2003-01-20      Joel Sherrill <joel@OARcorp.com>

        * startup/linkcmds*: Add FreeBSD sysctl() sections.

2002-12-08      Greg Menke <gregory.menke@gsfc.nasa.gov>
  
        * bootloader/head.S: Added support for optional debug via PPCbug.
        Also turn off mmu/caches for the bootstrap phase, which seems to
        cause trouble with the 603.  The cpu init functions in the bsp
        get all that stuff going properly.

2002-12-19      Joel Sherrill <joel@OARcorp.com>

        * console/console.c: Removed __assert() which conflicts with newlib.

2002-11-17      Greg Menke <gregory.menke@gsfc.nasa.gov>

        * irq/irq_init.c, motorola/motorola.c: Support for MTX603e.

2002-10-31      Joel Sherrill <joel@OARcorp.com>

        * bootloader/em86.c, console/inch.c, console/polled_io.c, irq/irq.c,
        motorola/motorola.c, pci/detect_raven_bridge.c,
        vectors/vectors_init.c: Removed warnings.

2002-07-25      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * bootloader/em86real.S: Fix syntax error in comment near line 1185.

2001-05-14      Till Straumann <strauman@slac.stanford.edu>

        * bootloader/misc.c, console/Makefile.am, console/console.c,
        console/consoleIo.h, console/inch.c, console/polled_io.c,
        console/uart.c, console/uart.h, include/bsp.h, irq/Makefile.am,
        irq/irq.c, irq/irq.h, irq/irq_init.c, openpic/openpic.c,
        openpic/openpic.h, pci/Makefile.am, pci/pci.c, pci/pci.h,
        residual/Makefile.am, start/start.S, startup/bspstart.c,
        vectors/vectors.S, vectors/vectors.h, vectors/vectors_init.c:
        Per PR216, "libbsp/powerpc/shared" BSP has been modified considerably
        with the goal to make it more flexible and reusable by other
        BSPs. The main strategies were:
            - eliminate hardcoded base addresses; devices use offsets
              and a BSP defined base address.
            - separate functionality into different files (e.g. reboot from
              inch.c to reboot.c) which can be overridden by a 'derived' BSP.
            - separate initialization code into separate files (e.g.  PCI
              bridge detection/initialization was separated from the more
              generic PCI access routines), also to make it easier for
              'derived' BSPs to substitute their own initialization code.
        There are also a couple of enhancements and fixes:
            - IRQ handling code now has a hook for attaching a VME bridge.
            - OpenPIC is now explicitely initialized (polarities, senses).
              Eliminated the implicit assumption on the presence of an ISA PIC.
            - UART and console driver now supports more than 1 port. The current
              maximum of 2 can easily be extended by enlarging a table (it
              would even be easier if the ISR API was not broken by design).
            - fixed polled_io.c so it correctly supports console on COM2
            - fixed TLB invalidation code (start.S).
            - exception handler prints a stack backtrace.
            - added BSP_pciFindDevice() to scan the pci bus for a particular
              vendor/device/instance.

2001-05-09      Joel Sherrill <joel@OARcorp.com>

        * startup/linkcmds: In support of gcc 3.1, added one of more
        of the sections .jcr, .rodata*, .data.*, .gnu.linkonce.s2.*,
        .gnu.linkonce.sb2.*, and .gnu.linkonce.s.*.  Spacing corrections
        and direction of segments to memory regions may also have been
        addressed.  This was a sweep across all BSPs.
 
2002-04-18      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * bootloader/exception.S: Reflect changes to <rtems/score/cpu.h>.
        * bootloader/head.S: Ditto.
        * bootloader/misc.c: Ditto.
        * console/polled_io.c: Ditto.
        * irq/irq.c: Ditto.
        * irq/irq_asm.S: Ditto.
        * irq/irq_init.c: Include <rtems/bspIo.h>.
        * start/start.S: Reflect changes to <rtems/score/cpu.h>.
        * vectors/vectors.S: Ditto.

2002-04-16      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * startup/bspstart.c: Include <libcpu/cpuIdent.h>.

2001-04-08      Joel Sherrill <joel@OARcorp.com>

        * startup/linkcmds: Per PR170, PR171, and PR172 add .eh_frame 
 
2002-04-02      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * residual/residual.c: Include <string.h>.
        * vectors/vectors_init.c: Include <rtems/bspIo.h> for printk.
        * bootloader/mm.c: Ditto.
        * bootloader/pci.c: Ditto.
        * console/console.c: Ditto.
        * openpic/openpic.c: Ditto.

2002-03-27      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * bootloader/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * Makefile.am: Remove AUTOMAKE_OPTIONS.
        * clock/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * console/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * include/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * irq/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * motorola/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * openpic/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * pci/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * residual/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * start/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * startup/Makefile.am: Remove AUTOMAKE_OPTIONS.
        * vectors/Makefile.am: Remove AUTOMAKE_OPTIONS.

2001-11-28      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * include/Makefile.am: Use _HEADER instead of H_FILES.
        * irq/Makefile.am: Ditto.
        * openpic/Makefile.am: Ditto.
        * include/bsp.h: Include <bspopts.h>.

2001-10-25      Joel Sherrill <joel@OARcorp.com>

        * startup/linkcmds: Added _init and _fini.

2001-10-12      Joel Sherrill <joel@OARcorp.com>

        * clock/p_clock.c, startup/bspstart.c: Fixed typo.

2001-09-27      Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * console/Makefile.am: Use 'PREINSTALL_FILES ='.
        * residual/Makefile.am: Use 'PREINSTALL_FILES ='.
        * irq/Makefile.am: Use 'PREINSTALL_FILES ='.
        * motorola/Makefile.am: Use 'PREINSTALL_FILES ='.
        * vectors/Makefile.am: Use 'PREINSTALL_FILES ='.
        * pci/Makefile.am: Use 'PREINSTALL_FILES ='.
        * openpic/Makefile.am: Use 'PREINSTALL_FILES ='.

2001-05-14      Tom Armistead <tom_armistead@phx.mcd.mot.com>

        * start/start.S: Increased BAT0 mapping of RAM from 64 meg to
        256 meg to allow operation on boards with larger RAM sizes.
        * vectors/vectors_init.c: Modified to call 'generic' powerpc
        vector function (mpc60x_vector_is_valid) instead of MPC750 
        specific function to allow operation on boards with CPUs other
        than the MPC750.

2001-03-30      Eric Valette <valette@crf.canon.fr>

        * Makefile.am, console/consoleIo.h, include/bsp.h:
        These modifications are part of the conversion of the
        mpc8xx CPU to the "new exception processing model."

2000-11-01      Joel Sherrill <joel@OARcorp.com>

        * startup/bspstart.c: assoc.h, error.h, libio_.h, libio.h,
        and libcsupport.h moved from libc to lib/include/rtems and
        now must be referenced as <rtems/XXX.h>.   Header file order
        was cleaned up while doing this.

2000-09-29      Charles-Antoine Gauthier <charles.gauthier@nrc.ca>

        * startup/linkcmds: Added lines so DWARF debug information
        would be available.  Otherwise gdb complains that the offsets
        for the debug info are incorrect and doesn't load the files.

2000-09-05      Joel Sherrill <joel@OARcorp.com>

        * start/start.S: Include proper files to compile.

2000-08-10      Joel Sherrill <joel@OARcorp.com>

        * ChangeLog: New file.