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2006-11-16 Joel Sherrill <joel@OARcorp.com>

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* shared/bspstart.c, shared/start.S: Use common clock driver template
	and eliminate all fast idle code specific to this BSP. This
	eliminates a fair amount of code in the BSP clock driver and
	bsp_startup. The LEON3 has to do a scan of the AMBA bus to find the
	timer so I added the new hook Clock_driver_support_find_timer to
	support this. In general, there was some clean up to the file headers
	of various files.
This commit is contained in:
Joel Sherrill
2006-11-16 16:31:20 +00:00
parent 7b8dee3fbc
commit 5438bca377
3 changed files with 18 additions and 102 deletions
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10
c/src/lib/libbsp/sparc/ChangeLog
View File

@@ -1,3 +1,13 @@
2006-11-16 Joel Sherrill <joel@OARcorp.com>
* shared/bspstart.c, shared/start.S: Use common clock driver template
and eliminate all fast idle code specific to this BSP. This
eliminates a fair amount of code in the BSP clock driver and
bsp_startup. The LEON3 has to do a scan of the AMBA bus to find the
timer so I added the new hook Clock_driver_support_find_timer to
support this. In general, there was some clean up to the file headers
of various files.
2006-10-19 Ralf Corsépius <ralf.corsepius@rtems.org>
* configure.ac: Require automake-1.10. Require autoconf-2.60.

103
c/src/lib/libbsp/sparc/shared/bspstart.c
View File

@@ -4,7 +4,7 @@
* The generic CPU dependent initialization has been performed
* before any of these are invoked.
*
* COPYRIGHT (c) 1989-2003.
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
@@ -46,55 +46,6 @@ rtems_cpu_table Cpu_table;
extern uint32_t rdb_start;
/*
* Amount to increment itimer by each pass
* It is a variable instead of a #define to allow the 'looptest'
* script to bump it without recompiling rtems
*/
uint32_t CPU_SPARC_CLICKS_PER_TICK;
#if SIMSPARC_FAST_IDLE
/*
* Many of the tests are very slow on the simulator because they have
* have 5 second delays hardwired in.
*
* Try to speed those tests up by speeding up the clock when in the idle task.
*
* NOTE: At the current setting, 5 second delays in the tests take
* approximately 5 seconds of wall time.
*/
rtems_extension fast_idle_switch_hook(
rtems_tcb *current_task,
rtems_tcb *heir_task
)
{
static uint32_t normal_clock = ~0;
static uint32_t fast_clock;
/* init our params on first call */
if (normal_clock == ~0)
{
normal_clock = CPU_SPARC_CLICKS_PER_TICK;
fast_clock = CPU_SPARC_CLICKS_PER_TICK / 0x08;
if (fast_clock == 0) /* handle pathological case */
fast_clock++;
}
/*
* Run the clock faster when idle is in place.
*/
if (heir_task == _Thread_Idle)
CPU_SPARC_CLICKS_PER_TICK = fast_clock;
else if (current_task == _Thread_Idle)
CPU_SPARC_CLICKS_PER_TICK = normal_clock;
}
#endif
/*
* Use the shared implementations of the following routines
*/
@@ -125,36 +76,6 @@ void bsp_pretasking_hook(void)
bsp_libc_init((void *) heap_start, heap_size, 0);
#if SIMSPARC_FAST_IDLE
/*
* Install the fast idle task switch extension
*
* On MP systems, might not want to do this; it confuses at least
* one test (mp06) if the simulators are running too far from real time.
*/
#if 0
if (BSP_Configuration.User_multiprocessing_table == 0)
#endif
{
rtems_extensions_table fast_idle_extension;
rtems_id extension_id;
rtems_status_code rc;
memset(&fast_idle_extension, 0, sizeof(fast_idle_extension));
fast_idle_extension.thread_switch = fast_idle_switch_hook;
rc = rtems_extension_create(
rtems_build_name('F', 'D', 'L', 'E'),
&fast_idle_extension,
&extension_id
);
if (rc != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred(rc);
}
#endif
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
@@ -203,26 +124,4 @@ void bsp_start( void )
}
BSP_Configuration.work_space_start = work_space_start;
#if SIMSPARC_FAST_IDLE
/*
* Add 1 extension for fast idle
*/
BSP_Configuration.maximum_extensions++;
#endif
/*
* Add 1 extension for MPCI_fatal
*/
if (BSP_Configuration.User_multiprocessing_table)
BSP_Configuration.maximum_extensions++;
/*
* Set the "clicks per tick" for the simulator
* used by XXX/clock/clock.c to schedule interrupts
*/
CPU_SPARC_CLICKS_PER_TICK = BSP_Configuration.microseconds_per_tick;
}

7
c/src/lib/libbsp/sparc/shared/start.S
View File

@@ -7,6 +7,13 @@
* distribution of the SPARC Instruction Simulator (SIS) found
* at ftp://ftp.estec.esa.nl/pub/ws/wsd/erc32.
*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/