changelog

开放源码实时操作系统源码.

	There is only one counting register (OSCR), but multiple match
	registers and interrupt sources (OSMR1-OSMR3).  Setting our match
	register to COUNT and the counter register to 0 each tick makes it
	very hard to use the other match registers - whereas they are
	intended for easy general use.

	This change sets our match register OSMR0 to the next time
	interval and leaves the OSCR freerunning so that other match
	registers can easily be used, which is much more flexible, and
	much more what was intented.

	Because the OSCR is just a counter, and the match registers
	compare only for exact equality, no special measures to deal with
	the counter wrapping/overflowing are needed.

2001-02-08  Jesper Skov  <[e-mail]>

	* src/hal_diag.c: Replace CYGSEM_HAL_DIAG_MANGLER_None with
	CYGDBG_HAL_DIAG_TO_DEBUG_CHAN.

2001-02-01  Jesper Skov  <[e-mail]>

	* include/hal_var_ints.h: Include registers definitions used in
	reset macro.

2001-01-31  Jesper Skov  <[e-mail]>

	* src/hal_diag.c: Replaced CYGDBG_HAL_DIAG_DISABLE_GDB_PROTOCOL
	with CYGSEM_HAL_DIAG_MANGLER_None

2001-01-26  Jesper Skov  <[e-mail]>

	* src/hal_diag.c: Removed CYGSEM_HAL_VIRTUAL_VECTOR_DIAG check.
	* include/plf_stub.h: Moved reset macro to
	* include/hal_var_ints.h: this file.

2001-01-05  Hugo Tyson  <[e-mail]>

	* include/hal_mm.h: Change bitfields within memmap entry to
	unsigned, so that we can compare values successfully - otherwise
	"0x02" sign-extends and is never equal after promotion!

	* include/hal_cache.h: Include the platform memory map
	interrogation definitions from <cyg/hal/plf_mmap.h> and header for
	the new functions below.

	* src/sa11x0_misc.c (hal_virt_to_phys_address): 
	(hal_phys_to_virt_address): 
	(hal_virt_to_uncached_address): New functions which inspect the
	real memory map in force to verify the static translations defined
	in the efficient macro versions.

	* tests/mmap_test.c (endif): New file: testcase for memory map
	interrogation macros and verification functions.

	* cdl/hal_arm_sa11x0.cdl: Build the testcase.

2000-12-13  Hugo Tyson  <[e-mail]>

	* cdl/hal_arm_sa11x0.cdl: Define a symbol CYGBLD_HAL_VAR_INTS_H so
	that the architectural HAL can see <cyg/hal/hal_var_ints.h> below.

	* include/hal_var_ints.h: New file; actually a copy of all the
	platforms' hal_platform_ints.h for all the sa11x0 platforms.

	* include/hal_mm.h: New file; actually an excerpt from all the
	platforms' $PLATFORM_misc.h for all the sa11x0 platforms, which
	describes MM table layout and macros for initializing it.

2000-12-12  Gary Thomas  <[e-mail]>

	* cdl/hal_arm_sa11x0.cdl: Allow RTC clock rate to be changable.

2000-12-04  Hugo Tyson  <[e-mail]>

	* include/hal_cache.h: Consistently ensure that ARM registers used
	in MCR ops to cache-control coprocessors, where the data doesn't
	matter, all actually have data zero ("SBZ") as in the Jaggar book.
	This may well not be necessary, but for the sake of making sure...

2000-12-01  Hugo Tyson  <[e-mail]>

	* include/hal_cache.h: Define addressable cache line operations
	HAL_DCACHE_STORE(), HAL_DCACHE_INVALIDATE(), HAL_DCACHE_FLUSH()
	now that I have understood how come the test (kcache2) was
	failing.  See kernel ChangeLog for details.  Also tidied up a
	couple of other minor details.

2000-11-27  Gary Thomas  <[e-mail]>

	* src/hal_diag.c (init_channel): UART setup required on Brutus as well.

2000-11-21  Gary Thomas  <[e-mail]>

	* src/hal_diag.c (init_channel): Disable broken uart setups on platforms
	other than the SA1110MM, since this code seems to be somewhat broken.

2000-10-25  Drew Moseley  <[e-mail]>

	* src/hal_diag.c: Added UART1 support for SA1100 targets.

	* include/hal_sa11x0.h: Added GPIO bit definitions.

2000-07-14  Gary Thomas  <[e-mail]>

	* include/hal_diag.h (HAL_DELAY_US): Define.

	* src/sa11x0_misc.c (hal_delay_us): New function.  Used to 
	provide timers/delays in non-kernel systems.

2000-07-05  Jesper Skov  <[e-mail]>

	* cdl/hal_arm_sa11x0.cdl: 
	* src/hal_diag.c:
	Cleaned up channel options.
	
	* src/hal_diag.c: Use per-channel structure instead of code cruft.

2000-06-30  Jesper Skov  <[e-mail]>

	* src/hal_diag.c: calling i/f macro changes.

2000-06-28  Jesper Skov  <[e-mail]>

	* cdl/hal_arm_sa11x0.cdl: 
	* include/plf_stub.h:
	* src/plf_stub.c: [deleted]
	Stub uses vector table for all IO.
	
	* src/sa11x0_misc.c: Fix compiler warning.

2000-06-27  Jesper Skov  <[e-mail]>

	* src/hal_diag.c: Some fixes and code layout changes (Gary
	Thomas).

	* src/hal_diag.c:
	* include/hal_diag.h:
	* include/hal_sa11x0.h:
	Changed to initialize all procs tables. Added timeout getc, and
	proper debug channel switch behavior.

2000-06-24  Gary Thomas  <[e-mail]>

	* src/sa11x0_misc.c (hal_clock_reset): Add code to compensate for
	clock drift since this hardware does not reset on interrupts.
	(hal_clock_read): Also adjust the value returned here for same reason.

2000-06-22  Gary Thomas  <[e-mail]>

	* src/hal_diag.c (hal_diag_write_char): 
	Fix typo: CYGINT_HAL_GDB_PORT_VECTOR to be CYGHWR_HAL_GDB_PORT_VECTOR
	
2000-06-19  Gary Thomas  <[e-mail]>

	* include/hal_diag.h: 
	* include/plf_stub.h: 
	* src/hal_diag.c: 
	* src/sa11x0_misc.c: Update for virtual vector (debug) support.

2000-06-12  Gary Thomas  <[e-mail]>

	* src/hal_diag.c: Fix baud rates for 960,19200.  Take out "announce"
	string in ROM mode.

2000-06-05  Gary Thomas  <[e-mail]>

	* src/plf_stub.c: 
	* include/plf_stub.h: 'sa1100' shared items renamed to 'sa11x0'.

	* src/sa11x0_misc.c (hal_IRQ_handler): 
	(hal_interrupt_mask): 
	(hal_interrupt_unmask): 
	(hal_interrupt_acknowledge): 
	(hal_interrupt_configure): Complete support for GPIO interrupts.  
	Some of these are direct, others are grouped and the code needs 
	to handle both.  Also update support for GPIO edge detect interrupt 
	circuitry.

2000-06-04  Gary Thomas  <[e-mail]>

	* include/hal_cache.h: 
	* src/hal_diag.c: 
	* src/sa11x0_misc.c: Renaming of 'sa1100' shared stuff to be
	'sa11x0'.
	
	* include/hal_sa11x0.h: Renamed from 'hal_sa1100.h'.

2000-06-01  Gary Thomas  <[e-mail]>

	* src/sa11x0_misc.c: Enable caches.

	* include/hal_sa1100.h: Misc cleanups and additions necessary for
	ROM startup mode.

2000-05-10  Gary Thomas  <[e-mail]>

	* current/src/plf_stub.c:
	* current/src/hal_diag.c:
	* current/src/sa11x0_misc.c: 
	* current/include/hal_diag.h: 
	* current/include/hal_sa1100.h: 
	* current/include/hal_cache.h: 
	* current/include/plf_stub.h: 
	* current/cdl/hal_arm_sa11x0.cdl: New file(s).

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