changelog

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	* include/pkgconf/hal_powerpc.h: Add variant option.
	Include variant headers.
	
	* include/ppc_regs.h: 
	* include/hal_intr.h:
	* include/hal_cache.h:
	Moved variant definitions into new variant header files.

	* cdl/hal_powerpc.cdl: Add interface for CPU variants.

2000-02-03  Jesper Skov  <[e-mail]>

	* tests/intr0.c: 
	* tests/PKGconf.mak: 
	* include/hal_cache.h:
	* include/hal_intr.h:
	* include/ppc_regs.h:
	* include/ppc.inc:
	* src/hal_intr.c:
	* src/hal_misc.c:
	* src/ppc_stub.c:
	* src/vectors.S:
        CYG_HAL_POWERPC_x->CYGPKG_...
	
2000-01-28  Gary Thomas  <[e-mail]>

	* src/powerpc.ld: Add support for network package.

2000-01-26  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Include plf_cache.h

	* src/hal_misc.c: Moved cache init control settings to plf_cache.h

2000-01-24  Jesper Skov  <[e-mail]>

	* src/hal_misc.c: Depend on CYGSEM_HAL_ROM_MONITOR instead of
	CYG_HAL_ROM_MONITOR.

2000-01-19  Hugo Tyson  <[e-mail]>

	* cdl/*.cdl: Add descriptions to a number of options &c which were
	lacking same, also tidied up other typos as noticed en passant.

1999-12-02  John Dallaway  <[e-mail]>

	* cdl/hal_powerpc.cdl:

	Use the <PACKAGE> token in custom rules.

1999-12-01  John Dallaway  <[e-mail]>

	* cdl/hal_powerpc.cdl:

	Use the <PREFIX> token in custom rules.

1999-11-04  John Dallaway  <[e-mail]>

	* cdl/hal_powerpc.cdl:

	Output custom rule dependency information to .deps files in
	the current directory.

	Dispense with the need to create a 'src' sub-directory.

1999-11-03  John Dallaway  <[e-mail]>

	* cdl/hal_powerpc.cdl: Define build options.

1999-09-28  Jesper Skov  <[e-mail]>

	* tests/intr0.c: Added some more debug output.

1999-09-23  Jonathan Larmour  <[e-mail]>

	* src/hal_misc.c (cyg_hal_exception_handler): Catch exceptions
	generated from within the GDB stub so we can recover from bad memory
	accesses
	Also part of the fix for case 102104

1999-09-23  Jesper Skov  <[e-mail]>
        Case 102104
	* include/hal_cache.h (HAL_ICACHE_SYNC): Invalidate I cache.

1999-09-06  Jesper Skov  <[e-mail]>

	* src/hal_misc.c (hal_null_call): 
	* src/vectors.S: 
	Trap calls to address 0.
	
1999-09-01  Gary Thomas  <[e-mail]>

	* src/hal_misc.c: Clean up list of included files.  <hal.h>
	now provides target and platform specifics.

	* src/hal_intr.c: CYGFUN_HAL_COMMON_KERNEL_SUPPORT should only
	be defined if CYGPKG_KERNEL is defined.  This needs to be fixed
	in a more generic fashion when full CDL becomes available.

	* src/vectors.S: Exception and interrupt handling were enabling
	CPU interrupts when it wasn't safe nor warranted.

1999-08-16  Jesper Skov <[e-mail]>
	From Bob Koninckx <[e-mail]>

	* src/ppc_stub.c (__clear_single_step): Clear irq_state to prevent
	interrupt avalanche.

1999-06-29  Hugo Tyson  <[e-mail]>

	* include/hal_intr.h (CYGNUM_HAL_EXCEPTION_DATA_ACCESS): Define
	this for handling MACHINE_CHECK if an MPC860 - it never generates
	ISI nor DSI exceptions, only machine check.  This allows libc to
	catch SEGVs from this unexpected quarter.

1999-06-28  Hugo Tyson  <[e-mail]>

	* include/ppc_regs.h: Add proper definitions of timebase regs.

	* tests/intr0.c: Add some useful debugging printouts and recording
	of state, and make more platform-portable; the rate of PTA is not
	always 1:32 wrt the timebase.

1999-06-27  Gary Thomas  <[e-mail]>

	* src/vectors.S (_start): Call platform dependent IRQ setup (see
	next note).

	* src/hal_intr.c (hal_IRQ_init): New platform dependent function
	used to setup whatever is necessary to handle interrupts.
	Add basic "wiring" of CPM to SIU interrupts.

	* include/hal_intr.h: Fix CPM interrupt macros - control register
	is 32 bits, not 16.

1999-06-24  Jesper Skov  <[e-mail]>

	* misc/CPUMask8xx.c: Added.

1999-06-24  Hugo Tyson  <[e-mail]>

	* src/hal_misc.c (cyg_hal_exception_handler): If the decrementer
	has underflowed when we are returning from an exception, then we
	reset it here; this is harmless if all is well, and required if
	the QUICC-equipped MPC860 is getting confused about interrupts
	following an exception.  Only in QUICC configurations.

1999-06-22  Hugo Tyson  <[e-mail]>

	* src/vectors.S (_start): Support breaking back into the stub ROM
	when we see a breakpoint, if RAM start and RAM-based vectors for
	the stub.  Rather than using a direct jump, instead skip copying
	the program exception vectors - leave the stub's vec in place.
	Controlled by CYGPRI_STUBROM_HAS_RAM_VECTORS, which varies from
	platform to platform.

1999-06-18  Hugo Tyson  <[e-mail]>

	* src/hal_misc.c (hal_enable_caches): Change the configuration,
	the better to accommodate differing platform requirements viz a
	viz cache enabling and so on.

1999-06-17  Hugo Tyson  <[e-mail]>

	* src/vectors.S (CYG_MSR): define correctly for copying vectors,
	even if ROM start.  Complete system init for ROM start.

1999-06-15  Hugo Tyson  <[e-mail]>

	* include/ppc.inc: Add definitions of FUNC_START and FUNC_END.
	They are needed by platform code.

	* src/vectors.S: Remove definition of FUNC_START.

1999-06-11  Hugo Tyson  <[e-mail]>

	* src/vectors.S (_start): remove some platform-conditional
	initialization code; it is now in hal_hardware_init in the
	platform HAL.

	* src/hal_misc.c: remove very-platform-conditional definition of
	memory descriptor table - it is now in platform HALs.
	
	* include/ppc_regs.h: simplify definition of CYGARC_REG_IMM_BASE.

	* include/hal_cache.h (CYGARC_MEMDESC_CACHE): ...and other
	macros... add support for external definitions of memory
	descriptor table used in platform-specific initialization of MMU.

1999-06-10  Hugo Tyson  <[e-mail]>

	* src/vectors.S (_start): Add better support for various startup
	options, including CygMon loading.

	* src/PKGconf.mak (COMPILE): remove quicc_smc.c; it has been
	reorganized and renamed into the FADS component.

	* include/quicc_smc.h, src/ppc_860.h, src/quicc_smc.c: removed;
	reorganized and renamed into the FADS component.

	* src/hal_misc.c (hal_idle_thread_action): Add some useful
	debugging for interrupt/clock of the MBX860/PPC860; normally
	disabled, so no effect on code.

	* include/ppc_regs.h: Different default value for
	CYGARC_REG_IMM_BASE if MBX board (ie. the way CygMon sets it up).
	This is a temporary measure.

1999-06-08  Jesper Skov  <[e-mail]>

	* include/hal_intr.h: 
	* src/vectors.S (hal_vsr_table): 
	* src/hal_misc.c (hal_default_decrementer_isr): 
	Use NOP default ISR for decrementer.
	Fix hal_intr macros.
	
1999-06-04  Jesper Skov  <[e-mail]>
	PR 20146
	* src/ppc_860.h: Added padding to some structures, reported by
	Jean-Dominique Orvoen ([e-mail])

1999-05-26  Jesper Skov  <[e-mail]>

	* include/hal_cache.h (HAL_DCACHE_LOCK):
	Fixed asm constraint.

1999-05-25  Jesper Skov  <[e-mail]>

	* include/hal_intr.h:
	* src/vectors.S (hal_interrupt_stack_call_pending_DSRs): 
	Added call_pending_DSR magic.

1999-05-21  Hugo Tyson  <[e-mail]>

	* include/hal_intr.h: Define HAL_INTERRUPT_STACK_BASE and
	HAL_INTERRUPT_STACK_TOP so that stack usage macros in
	kernel/.../stackmon.hxx can work.

	* src/vectors.S (cyg_interrupt_stack_base): Define this symbol for
	the interrupt stack and its friend for the stack top so that we
	can publish them with nice names.

1999-05-13  Hugo Tyson  <[e-mail]>

	* include/hal_arch.h (HAL_THREAD_INIT_CONTEXT): Align stack
	(rather conservatively) before use.

1999-04-28  Bart Veer  <[e-mail]>

	* src/PKGconf.mak: 
	Remove the -n argument to tail, it does not appear to be required
	on any supported host and causes problems with some
	implementations of tail.

1999-04-19  Jesper Skov  <[e-mail]>
        PR 19861
	* src/vectors.S (_start): Rewrote the hal_zero_bss code in
	assembly. When compiling with -O0 the C function accesses the
	previous stack frame upon return, causing a crash.

1999-04-15  Jonathan Larmour  <[e-mail]>

	* src/powerpc.ld: Define __bss_start/__bss_end around the BSS, and
	__sbss_start/__sbss_end around the SBSS
	* src/vectors.S (_start): Call C function to clear BSS.
	* src/hal_misc.c (hal_zero_bss): Use __bss_end rather than _end when
	clearing BSS. Clear SBSS similarly but separately since the MLT
	may have them in non-contiguous parts of memory.
	
	These fix PR 19750

1999-04-14  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Added HAL_xCACHE_IS_ENABLED macros.

1999-04-14  Jonathan Larmour  <[e-mail]>

	* src/PKGconf.mak (EXTRAS): Don't generate extras.o here any more
	But do define EXTRAS every time for the linker script

1999-04-09  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c:
	Moved get_register and put_register to hal_stub.c.

1999-04-08  John Dallaway  <[e-mail]>

	* src/*.ld: Revised SECTION_* macro arguments to
	avoid padded output sections (PR 19787)

1999-04-07  Gary Thomas  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_STACK_SIZE_xxx): Increase to more
	realistic values.  PR 19748.

1999-03-31  Jesper Skov  <[e-mail]>
        PR 19741
	* src/vectors.S:
	* src/ppc_stub.c (__computeSignal): 
	Added some comments about the use of MSR/SRR1. Masked out reserved
	bits of MSR before restoring it.
	
1999-03-23  Jesper Skov  <[e-mail]>

	* include/hal_arch.h: Added stack values.

1999-03-22  Jonathan Larmour  <[e-mail]>

	* include/ppc_stub.h: Update copyright

	* src/ppc_stub.c: Update copyright

1999-03-22  Hugo Tyson  <[e-mail]>

	* include/hal_arch.h: 
	Use CYGNUM_HAL_STACK_SIZE_TYPICAL for the stack size instead of
	CYGNUM_HAL_MINIMUM_STACK_SIZE.

1999-03-22  Jesper Skov  <[e-mail]>

	* tests/intr0.c: 
	* include/ppc.inc: 
	* include/hal_arch.h:
	Cleaned up some FIX MEs.

1999-03-18  Jesper Skov  <[e-mail]>

	* include/ppc.inc: Removed exception safety margin.

1999-03-17  John Dallaway  <[e-mail]>

	* src/PKGconf.mak: Remove dependence on echo '-e' switch.

1999-03-16  Jesper Skov  <[e-mail]>

	* src/hal_misc.c: Moved extern declarations out of function body
	to avoid compiler warnings.

1999-03-12  Jesper Skov  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_MINIMUM_STACK_SIZE): Increased to
	2kB for safety.

	* include/ppc.inc: Reduced exception stack frame safety gap
	to 64 bytes.

1999-03-12  Gary Thomas  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_MINIMUM_STACK_SIZE): 
	Added HAL stack size definition.

1999-03-10  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (HAL_INTERRUPT_IN_USE): Added.

1999-03-08  Nick Garnett  <[e-mail]>

	* src/powerpc.ld:
	Added alignment before definition of __DEVTAB__.	

1999-03-08  Jesper Skov  <[e-mail]>

	* include/hal_intr.h: Removed workaround.

1999-03-05  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (cyg_hal_interrupt_set_level): Disable this
	function as a temporary workaround to PR 19400.

1999-03-05  Gary Thomas  <[e-mail]>

	* src/PKGconf.mak: 
	* src/powerpc.ld: Clean up I/O package changes.

1999-03-04  Jonathan Larmour  <[e-mail]>

	* src/powerpc.ld:
	Add INPUT(libextras.a), add libextras.a to GROUP() and include
	new section for device driver table

1999-02-26  Jesper Skov  <[e-mail]>

	* include/hal_intr.h: Removed FIX ME.

1999-02-26  Jesper Skov  <[e-mail]>

	* include/hal_intr.h:
	* src/ppc_stub.c (__computeSignal): 
	Renamed CYGNUM_HAL_HWVECTOR_DECREMENTER to
	CYGNUM_HAL_VECTOR_DECREMENTER.

1999-02-25  Nick Garnett  <[e-mail]>

	* src/vectors.S:
	Changed label used to access scheduler lock to one that is not
	mangled by C++. This is intended to make support for interrupt
	handling in non-kernel configurations easier.

1999-02-23  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c (__computeSignal): Renamed
	CYGNUM_HAL_VECTOR_DECREMENTER to CYGNUM_HAL_HWVECTOR_DECREMENTER.

1999-02-20  Jonathan Larmour  <[e-mail]>

	* include/hal_arch.h: 
	Rename deliver_exception() -> cyg_hal_deliver_exception()

	* include/hal_intr.h:
	Reorganise vector/interrupt/exception names according to purpose
	Add decoded exception vectors (decoded from PROGRAM exception)
	QA improvements

	* include/ppc_regs.h:
	Add defines for access to SRR0 and SRR1 registers

	* src/hal_intr.c:
	Rename CYG_VECTOR_* according to hal_intr.h changes above
	QA improvements

	* src/hal_misc.c:
	Decode PROGRAM vector using SSR1 register
	QA improvements

	* src/ppc_stub.c:
	Rename CYG_VECTOR_* according to hal_intr.h changes above

	* src/quicc_smc.c:
	Add a FIX ME

	* src/vectors.S:
	Rename exception_handler -> cyg_hal_exception_handler

	* tests/intr0.c:
	Rename CYG_VECTOR_* -> CYGNUM_HAL_INTERRUPT_* due to hal_intr.h
	changes above

1999-02-17  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c (__computeSignal): Moved special GDB signal
	handling to generic-stub.c.

1999-02-17  Jesper Skov  <[e-mail]>