changelog

Intel XScale PXA255 引导Linux的Redboot 版bootloader源代码！

2001-03-14  Mark Salter  <[e-mail]>

	* src/hal_stub.c (handle_exception_cleanup): Advance PC of original
	context past breakpoint insn.

2001-02-02  Mark Salter  <[e-mail]>

	* src/generic-stub.c: __set_breakpoint and __remove_breakpoint now
	take a length argument.

	* src/bplist-dynamic.c: Support breakpoint length. Use 
	HAL_BREAKINST_ADDR macro (if defined) to get actual breakpoint based
	on breakpoint length.

	* include/hal_stub.h: Add len argument to __set_breakpoint and
	__remove_breakpoint.

2000-11-27  Mark Salter  <[e-mail]>
	
	* src/generic-stub.c (__process_packet): Change 'k' packet to cause
	return to original context. Change 'r' packet to respond with empty
	packet before resetting board.

	* src/hal_stub.c (handle_exception_exit): New function. Restores
	original context saved when stub was entered for the first time.
	(handle_exception_cleanup): Save original context.
	(__install_traps): Set __process_exit_vec to handle_exception_exit.
	(__build_t_packet): Don't send threadid if its zero.

2000-11-22  Mark Salter  <[e-mail]>

	* src/hal_misc.c (hal_default_isr): Version check only when
	CYGSEM_HAL_ROM_MONITOR not defined.

2000-11-20  Mark Salter  <[e-mail]>

	* src/hal_stub.c (hal_flush_output): New function to flush debug
	comm interface.

	* src/generic-stub.c (__process_packet): Use hal_flush_output when
	killing or continuing.

	* include/hal_stub.h: Add declaration for hal_flush_output().

	* include/hal_if.h (__COMMCTL_FLUSH_OUTPUT): New comm control cmd.

2000-11-17  Jesper Skov  <[e-mail]>

	* src/hal_if.c (delay_us): Add dummy loop.
	Duh! Take usecs argment into account.

2000-11-06  Mark Salter  <[e-mail]>

	* src/generic-stub.c (__handle_exception): Add support for GNUPro bsp
	syscall handling.

	* src/board.h: Include pkgconf/redboot.h for CYGSEM_REDBOOT_BSP_SYSCALLS.

2000-11-06  Jesper Skov  <[e-mail]>

	* src/hal_if.c (hal_if_diag_write_char): Clear interrupt flag before
	setting breakpoint.

2000-11-04  Mark Salter  <[e-mail]>

	* src/hal_stub.c (__build_t_packet): Report reason and data
	address if stopped by hw watchpoint.

	* src/generic-stub.c (__process_packet): Remove experimental
	support for type 5 Z packet.

	* include/hal_stub.h: Define HAL_STUB_STOP_* reasons returned
	by HAL_IS_STOPPED_BY_HARDWARE.

2000-10-27  Mark Salter  <[e-mail]>

	* src/generic-stub.c: Fixed preprocessor warning.

2000-10-27  Gary Thomas  <[e-mail]>

	* src/generic-stub.c (__process_packet): Remove warnings when
	hardware breakpoint support (Z packet) not enabled.

2000-10-26  Mark Salter  <[e-mail]>

	* src/generic-stub.c (__process_packet): Add Z packet support.

	* src/bplist-dynamic.c: Include <pkgconf/hal.h> to pick up
	CYGNUM_HAL_BREAKPOINT_LIST_SIZE.

2000-10-24  Jesper Skov  <[e-mail]>

	* src/generic-stub.c (__process_packet): Disable buffer size
	z-packet.

2000-10-23  Jesper Skov  <[e-mail]>

	* src/hal_stub.c: Made __mem_fault_handler pointer volatile.

2000-10-20  Jonathan Larmour  <[e-mail]>

	* include/drv_api.h (cyg_interrupt): Make dsr_count volatile to
	prevent compilers optimizing accesses in the wrong place.

2000-10-20  Jesper Skov  <[e-mail]>

	* include/drv_api.h: Correct location of volatile keyword.
	* src/drv_api.c: Same.

2000-10-19  Gary Thomas  <[e-mail]>

	* src/generic-stub.c (__process_packet): Add RedBoot identifier
	in maintenance 'd' packet reply.

2000-10-18  Jesper Skov  <[e-mail]>

	* include/hal_if.h (CYGPRI_HAL_IMPLEMENTS_IF_SERVICES): Set for
	all non-RAM startup types.

2000-10-13  Jonathan Larmour  <[e-mail]>

	* src/stubrom/stubrom.c (cyg_start): Remove unnecessary call to
	initialize_stub()

2000-09-11  Jonathan Larmour  <[e-mail]>

	* include/hal_tables.h (CYG_HAL_TABLE_EXTRA): Use new definition of
	CYGBLD_ATTRIB_SECTION, and fix the string name up better.
	(CYG_HAL_TABLE_ENTRY): Ditto
	(CYG_HAL_TABLE_QUALIFIED_ENTRY): Ditto

2000-09-07  Jonathan Larmour  <[e-mail]>

	* include/hal_tables.h: Fix non-standard use of paste operator to
	remove warnings with recent gcc

2000-09-04  Jonathan Larmour  <[e-mail]>

	* include/hal_tables.h (CYG_HAL_TABLE_END): Use CYGARC_P2ALIGNMENT
	to align label
	(CYG_HAL_TABLE_TYPE): Define

2000-09-01  Jonathan Larmour  <[e-mail]>

        * src/hal_stub.c (__build_t_packet): Ensure sign extension applies
        in the higher word, not the lower.
	(__build_t_packet): Don't need to conditionalize on
	CYGARC_REGSIZE_DIFFERS_FROM_TARGET_REGISTER_T as there should be no
	problems with the current code.
	* src/generic-stub.c (stub_format_registers): Likewise

	* include/hal_if.h (CYGACC_COMM_IF_CONTROL): Remove warning due to
	unnecessary use of cpp paste operator

2000-08-28  Gary Thomas  <[e-mail]>

	* src/hal_if.c: 
	* include/hal_if.h (hal_ctrlc_check): Define new routine to be
	called by interrupt handlers (DSRs) which may be using hardware
	shared with a debug channel.  In particular, network adaptors 
	need to call this function to see if a ^C has occurred on the
	network debug connection.

2000-08-24  Gary Thomas  <[e-mail]>

	* include/hal_tables.h: Need descriminated tables (for proper sorting).

2000-08-14  Drew Moseley  <[e-mail]>

	* src/hal_if.c: Added an extern declaration for
	cyg_hal_plf_comms_init.	

	* src/bplist-dynamic.c: Only use breakpoint lists when building
	stubs.

2000-08-10  Drew Moseley  <[e-mail]>

	* include/generic-stub.h: Added support for register validity
	checking.
	* src/generic-stub.c: Ditto.
	* src/hal_stub.c: Ditto.

	* include/drv_api.h: Added cyg_code_t.

2000-08-03  Gary Thomas  <[e-mail]>

	* include/hal_if.h (CYGNUM_CALL_IF_DBG_DATA): Move to avoid
	conflict.

2000-07-26  Gary Thomas  <[e-mail]>

	* src/hal_stub.c (cyg_hal_gdb_diag_putc): Ignore any characters
	other than the protocol chars of ACK/NAK/^C.

	* src/hal_if.c (hal_if_diag_init): Only reset console channel
	if user has configured a non-default choice.

2000-07-24  Drew Moseley  <[e-mail]>

	* src/bplist-dynamic.c (__install_breakpoint_list): Call
	HAL_ICACHE_SYNC() rather than HAL_ICACHE_INVALIDATE_ALL().

2000-07-21  Drew Moseley  <[e-mail]>

	* src/hal_stub.c: Cleanup of #define's.

	* src/generic-stub.c: Rearrange the linkage between Cygmon and HAL so
	that Cygmon needs HAL but not vice-versa.  ie HAL no longer calls
	any Cygmon functions.
	* src/hal_misc.c: Ditto.

	* src/bplist-dynamic.c: Use HAL macros rather than Cygmon
	functions for flushing the cache.
	Also handle the case where target_register_t is not defined.

2000-07-21  Gary Thomas  <[e-mail]>

	* src/hal_if.c (CYGNUM_HAL_VIRTUAL_VECTOR_NUM_CHANNELS): Define to allow
	the number of channels to be extended by "AUX" packages.

2000-07-20  Drew Moseley  <[e-mail]>

	* src/generic-stub.c (stub_format_registers): Make the previous patch
	effective only if CYGARC_REGSIZE_DIFFERS_FROM_TARGET_REGISTER_T is
	defined so as to not affect any other targets.
	* src/hal_stub.c: Ditto.

2000-07-19  Drew Moseley  <[e-mail]>

	* src/generic-stub.c (stub_format_registers): Handle the case
	where GDB is expecting registers larger than we are storing.  ie
	MIPS gdb expects 64 bit registers even if we are on a 32 bit
	architecture.  Also, handle the sign-extension correctly if
	necessary.
	* src/hal_stub.c (__build_t_packet): Ditto.

2000-07-18  Jesper Skov  <[e-mail]>

	* src/hal_misc.c (hal_default_isr): 
	Version gets hacked by hal_if_init - check for the hacked value.

2000-07-18  Jesper Skov  <[e-mail]>

	* src/hal_stub.c (__mem_fault_handler): Made volatile.
	
2000-07-14  Drew Moseley  <[e-mail]>

	* src/generic-stub.c: Cleanups for better coexistence with Cygmon.
	* include/generic-stub.h: Ditto.
	* include/hal_if.h: Ditto.
	* include/hal_stub.h: Ditto.
	* src/hal_stub.c: Ditto.

	* cdl/hal.cdl: Compile bplist-dynamic.c.

	* src/bplist-dynamic.c: New file for supporting breakpoints in the HAL.

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

	* src/hal_if.c (delay_us): Use HAL_DELAY_US() if defined.

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

	* src/hal_stub.c (initHardware): Fix #endif location.

	* src/hal_if.c (hal_ctrlc_isr_init): Added hack to work around a
	silly but critical problem.

	* src/hal_stub.c: Removed some CygMon conditional exclusions.

	* src/hal_if.c (hal_ctrlc_isr_init): Don't enable interrupts when
	configured as ROM monitor.

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

	* cdl/debugging.cdl: Only allow CTRLC support if there's stubs or
	a ROM monitor to handle it. (Haruki Kashiwaya (kashiwaya at redhat
	dot com)).

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

	* include/hal_if.h: Make CYGACC macros call functions. May have to
	add some _GET macros at some time if anyone needs to access the
	function pointers.

	* src/hal_stub.c: 
	* src/hal_misc.c:
	* src/hal_if.c:
	Matching changes of CYGACC clients.
	
2000-06-29  Jesper Skov  <[e-mail]>

	* src/hal_stub.c (cyg_hal_gdb_diag_putc): Check console interrupt
	flag and breakpoint if set.

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

	* src/hal_stub.c (cyg_hal_gdb_diag_putc): Don't try to set
	breakpoints in ROM startup - just disable interrupts. Also, use
	procs table function to disable device interrupts.

	* include/hal_if.h: Mark vector/comms arrays volatile to avoid
	compiler confusion.

	* include/dbg-threads-api.h: Fix C/C++ declaration issues.

	* src/hal_stub.c: Moved stub platform init call below vector table
	setup.

	* src/hal_misc.c:
	* src/hal_if.c:
	* include/hal_if.h: DBG_ISR_VECTOR and SET_TIMEOUT functions added
	to comms table. Added DELAY_US function to vector table. Made
	switching of debug channel dis/enable Ctrl-c interrupts as
	well. Made ctrlc_isr code use new vector entries. All this amounts
	to a properly switchable debug channel.

2000-06-21  Jesper Skov  <[e-mail]>

	* src/hal_stub.c: Fixed clients of vector procs tables to pass
	in the correct arguments. Hook O-packetizer up on procs slot
	reserved for IO mangler. Install mangler when necessary.

	* src/hal_if.c: Extended set procs functions to allow temporarily
	switching console procs in a safe manner. Removed debug and
	console wrappers - all IO happens via drivers hooked up in tables
	rather than through hardwired macros. Proper initialization of
	console proc entry. Fixed clients of vector procs tables to pass
	in the correct arguments. Stub now does its own vector table
	initialization. Added special procs slot for IO manglers.

	* include/hal_if.h: Define special IDs used by the set procs
	functions. PROCS_HANDLED removed since the procs table will now
	always service any port.

2000-06-21  Nick Garnett  <[e-mail]>

	* include/hal_stub.h: Added underscore to breakinst().

	* include/hal_tables.h:
	Added this file to contain macros for defining datatables in a
	systematic and extensible way.

2000-06-19  Gary Thomas  <[e-mail]>

	* cdl/hal.cdl: Revert change below - GUARANTEED can exist
	with STUBS defined.

2000-06-18  Gary Thomas  <[e-mail]>

	* cdl/hal.cdl: Use of virtual vector functions for diagnostic
	output must be disabled when building with stubs.  Note: this
	lets stubs be built for platforms with guaranteed virtual 
	vector support.

2000-06-16  Jesper Skov  <[e-mail]>

	* include/hal_if.h: All vector-dependant features hidden when
	config option not enabled.

	* src/hal_if.c (hal_if_init): Fix warning.

2000-06-15  Jesper Skov  <[e-mail]>

	* include/hal_if.h: Added console-include decision logic.

2000-06-15  Nick Garnett  <[e-mail]>

	* src/drv_api.c: 
	* include/drv_api.h: Added boolean result to cyg_drv_cond_wait()
	to match change to the kernel and KAPI functionality.

2000-06-14  Jesper Skov  <[e-mail]>

	* src/hal_stub.c: Added O-packetizer used by GDB stubs for virtual
	vector table configs.

	* src/hal_misc.c (hal_default_isr): Check Ctrlc for both CTRLC
	or BREAK options.

	* src/hal_if.c:
	* include/hal_if.h: 
	Define console wrappers when necessary. Platform HALs can use
	these by providing raw IO functions and some config data.

2000-06-09  Jesper Skov  <[e-mail]>

	* src/hal_if.c: Implemented most of the remaining services. Some
	just don't have an eCos equivalent at the moment.

	* cdl/hal.cdl: Allow virtual_vector options to have sensible
	default values depending on when the platform HAL port was
	written.

	* src/hal_misc.c (cyg_hal_user_break): Also expect CygMon to
	provide the breakpoint service.

	* src/stubrom/stubrom.c (cyg_start): Reverted change. Now handled
	by hal_if_init.

	* cdl/hal.cdl: Added option for controlling use of diag services
	in the virtual vector table.

2000-06-08  Jesper Skov  <[e-mail]>

	* src/stubrom/stubrom.c: Call hal_diag_init to ensure IF table
	entries related to diag IO get initialized.

	* src/hal_stub.c (cyg_hal_gdb_interrupt): save/restore GP so it
	can be used by MIPS platforms.
	Use reset function in ROM if available.

	* src/hal_misc.c: 
	* include/hal_misc.h: Functions shared between HALs. More
	functions are likely to be moved here if appropriate.

	* src/hal_if.c: Interfacing related functions: table init code and
	function wrappers.

	* include/hal_if.h: ROM/RAM calling interface table
	definitions. The layout is a combination of libbsp and vectors
	already in use by some eCos platforms.
	

	* cdl/hal.cdl: Added CYGxxx_HAL_VIRTUAL_VECTOR_SUPPORT
	options. These are used to control whether a platform uses the new
	ROM/RAM calling interface. All platforms will be converted to use
	this, but piecemeal over a period of time, thus the requirement
	for selecting behavior.

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

	* cdl/hal.cdl: Support variant 'pkgconf' headers.  This will allow
	[variant] common symbols to be defined, rather than duplicating 
	them over all platforms using that variant.

2000-05-25  Jesper Skov  <[e-mail]>

	* cdl/debugging.cdl: Allow thread support to included for ROM
	monitor builds.

2000-05-22  Jesper Skov  <[e-mail]>

	* cdl/debugging.cdl: Allow platform to prevent CTRLC inclusion.

2000-04-12  Jesper Skov  <[e-mail]>

	* cdl/debugging.cdl: Don't let interfaces define anything.

2000-04-07  Jesper Skov  <[e-mail]>

	* cdl/hal.cdl: Fix dependencies for stub.

2000-03-28  Jesper Skov  <[e-mail]>

	* src/generic-stub.c (__process_packet): Added 'z' packet reply.

2000-03-28  John Dallaway  <[e-mail]>

	* cdl/hal.cdl:

	Adjust documentation URLs.

2000-03-24  Jesper Skov  <[e-mail]>

	* include/hal_stub.h: Fixed a bad function name. Made it opssible
	for archs to define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION.

2000-03-20  Jesper Skov  <[e-mail]>

	* cdl/debugging.cdl: Preclude USE_MONITOR when including stubs.

2000-03-01  Gary Thomas  <[e-mail]>

	* cdl/common.cdl: 
	Define CYGINT_HAL_DIAG_DISABLE_GDB_PROTOCOL_SUPPORTED as an
	'interface' so implementations can be properly specified.

2000-02-29  Gary Thomas  <[e-mail]>

	* cdl/common.cdl: Option to disable GDB protocol now supported
	by QUICC based PowerPC systems.

2000-02-29  Jonathan Larmour  <[e-mail]>

	* include/generic-stub.h: Make header C++ safe

2000-02-16  Jesper Skov  <[e-mail]>