Subversion Repositories openrisc

2009-01-31  Bart Veer 

        * cdl/hal_sparclite_sim.cdl: update compiler flags for gcc 4.x

2003-07-18  Nick Garnett  

        * cdl/hal_sparclite_sim.cdl:

        Changed values for CYGNUM_HAL_RTC_NUMERATOR,

        CYGNUM_HAL_RTC_DENOMINATOR and CYGNUM_HAL_RTC_PERIOD to

        "default_value" from "calculated". This makes it easier

        to change these values globally.

2000-10-20  Jonathan Larmour  

        * include/pkgconf/mlt_sparclite_sim_ram.mlt:

        Add heap1 section

        * include/pkgconf/mlt_sparclite_sim_ram.h:

        * include/pkgconf/mlt_sparclite_sim_ram.ldi:

        Regenerated

2000-02-10  Jesper Skov  

        * cdl/hal_sparclite_sim.cdl: Added.

1999-11-25  Gary Thomas  

        * include/pkgconf/mlt_sparclite_sim_ram.h: New file.

1999-10-13  Hugo Tyson  

        * include/pkgconf/hal_sparclite_sim.h: Add define of

        CYGHWR_HAL_SPARCLITE_HAS_ASR17 for arch HAL to DTRT with SVT

        (anticipating cores with no SVT at all, so no %asr17)

1999-04-08  John Dallaway  

        * include/pkgconf/*.ldi: Revised SECTION_* macro arguments to

        avoid padded output sections (PR 19787)

1999-04-07  Hugo Tyson  

        * src/hal_priv.c: Remove bogus FIX ME; it wasn't true.

1999-03-16  Hugo Tyson  

        * include/halboot.si: Add a dummy LED macro for debug in the

        vectors.S; correct a scary line length.

1999-03-04  Gary Thomas  

        * include/pkgconf/hal_sparclite_sim.h: Take out DEVICES dependencies.

1999-03-04  John Dallaway  

        * include/pkgconf/*.ldi: give all LDI files unique names so

        that they can co-exist in an eCos build tree (PR 19184)

        * include/pkgconf/*.mlt: give all MLT files unique names so

        that they can co-exist in an eCos build tree (PR 19184)

1999-02-25  Hugo Tyson  

        These log entries from 1999-02-22 to 1999-02-24 were executed in

        a branch; this change is a merge of that branch into the trunk.

        (1999-02-23  John Dallaway  )

        * include/pkgconf/hal_sparclite_sim.h: New rules

        CYGPKG_HAL_SPARCLITE_SIM precludes CYGPKG_DEVICES_GDB

        CYGPKG_HAL_SPARCLITE_SIM precludes CYGPKG_DEVICES_SERIAL_RS232_COMMON

        (1999-02-22  Hugo Tyson  )

        * src/hal_priv.c (hal_board_prestart, hal_board_poststart):

        Shut down the erc32 watchdog in and enable interrupts in these two

        new routines.

        * include/halboot.si:

        Remove N/A code that I was just storing here, and install the real

        vector instructions in this fragment; there be cache-wangling to

        do in hardware cases either side of the vector installation.

1999-02-20  Jonathan Larmour  

        * include/hal_xpic.h:

        Rename CYG_VECTOR_* -> CYGNUM_HAL_INTERRUPT_*

        * src/hal_priv.c:

        Add a FIX ME

1999-02-08  John Dallaway  

        * src/sim.ld: Remove platform-specific linker script for

        MLT compliance.

        * src/PKGconf.mak: Remove build rules for sim.ld.

        * include/pkgconf/ram.*: Add MLT save file and and linker

        script fragment for RAM startup.

1999-02-01  Hugo Tyson  

        * include/halboot.si:

        New file: performs platform-oriented setup of RAM and cache

        controllers, and quietens any interrupt sources.

        * include/pkgconf/hal_sparclite_sim.h:

        Correct comments/CDL description of sim invocation.

1999-01-28  Hugo Tyson  

        * include/hal_cache.h: NEW FILE to this directory; moved here from

        the sparclite/arch tree; cache control is very much board-specific

        * include/hal_clock.h: NEW FILE to this directory; it was a part

        of hal_intr.h, but is now here because the clock is target determined.

        * include/hal_xpic.h: NEW FILE to this directory; it was a part of

        hal_intr.h, but is now here because the detail of interrupot

        control is target determined.

        * src/hal_priv.c: NEW FILE to this directory; it was a part

        of hal_intr.h, but is now here because the clock is target

        determined, and it's the clock that needs a local variable.

        * src/PKGconf.mak (COMPILE): compile it.

1999-01-26  Hugo Tyson  

        * src/sim.ld:

        Add copyright notice.  (Though these files will later be generated

        by a tool and so not copyright, these default setups are.)

1999-01-22  Hugo Tyson  

        * src/sim.ld:

        Remove some bogus comments.

1999-01-21  Jonathan Larmour  

        * src/sim.ld:

        Remove all traces of non-CYG_KERNEL_USE_INIT_PRIORITY code

1999-01-21  Hugo Tyson  

        * src/sim.ld:

        Align bss and rom/ram_data starts and ends by 8 bytes to permit

        fast copy routines.

1999-01-19  Hugo Tyson  

        Modified files in arch:

        * include/hal_arch.h

        * include/hal_intr.h

        * src/PKGconf.mak

        * src/context.S

        * src/hal_intr.c

        * src/vec_ivsr.S

        * src/vec_xvsr.S

        * src/vectors.S

        New files in arch:

        * src/hal_boot.c        (bss initialization, constructors &c)

        * include/hal_cache.h   (empty but required header)

        Modified files in sim:

        * include/hal_diag.h

        Lots more progress; essentially, everything now works.

        Simulator's treatment of stdio is poor though, it doesn't work

        under pkgtest.  This has been slowing me up.

1999-01-14  Hugo Tyson  

        * ecc/ecc/hal/sparclite/...:

        Initial checkin of SPARClite HAL; it doesn't work yet, except the

        most trivial of tests - timer and interrupt manipulation stuff is

        entirely absent.

        Here's some documentation of the initial checkin tree; this will

        change, as platform dependent stuff moves correctly into the sim

        or  directories.

        arch/current/include:

                basetype.h      nothing much here.

                vectors.h       definitions of symbols shared between the

                        various vector code assembler files, can be

                        included in both C and assembler.

                hal_intr.h      various macros for clock and interrupt

                        control plus the eCos vector numbering scheme; we

                        map thus:

                        what    SPARC trap type     eCos vector numbers

                        -----------------------------------------------

                        (not used)   ---                0

                        interrupts (17-31)              1-15

                        user traps (128-255)            16

                        exceptions (1-9,36==4)          17-25

                        others     (10,?)               26

                        -----------------------------------------------

                        Trap types 5 and 6 which would be eCos vectors 21

                        and 22 are handled in the trampoline code in

                        file src/vectors.S

                hal_arch.h      definition of a thread context, plus

                        macros for thread switching and the like.  Some

                        ancillary bit twiddling macros and cache barriers

                        too.

        arch/current/include/pkgconf:

                hal_sparclite.h         pkgconf config/header file.

        arch/current/src:

                vectors.S       boot-up stuff, trampoline code that hangs

                        on the interrupt/trap vector, handlers for window

                        under/overflow.  Saves some state in registers

                        then jumps to the interrupt or exception VSR

                        respectively.

                        Also instantiates the VSR table.

                vec_ivsr.S      the default interrupt VSR; it establishes

                        a C calling environment (ie. anticipates a window

                        overflow) then locks the scheduler, calls the ISR

                        with appropriate arguments, and then interrupt_end()

                        before undoing that environment, anticipating

                        window underflow and returning to the interrupted

                        instruction.

                vec_xvsr.S      the default exception AKA trap VSR; does

                        the same as the interrupt one but without the

                        scheduler lock or interrupt end.

                hal_intr.c      instantiates the ISR table used by the

                        code above.

                context.S       context switch code, saves and loads up a

                        whole register state, coroutine or longjump-like.

                icontext.c      initializes a context to "jump" to in

                        context.S at the birth of a new thread.

        sim/current/include:

                hal_diag.h      macros to deal with debugging output via a

                        fake serial device of some kind; initially empty,

                        but definitely board/sim dependent.

        sim/current/include/pkgconf:

                hal_sparclite_sim.h     pkgconf config/header file.

        sim/current/src:

                sim.ld          linker script bits for "sim" target.

//===========================================================================

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// This file is part of eCos, the Embedded Configurable Operating System.

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//EOF ChangeLog