From 2d4b256e1a575dbffec39899997cc13a78a35a8b Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 16 Nov 2006 16:31:34 +0000 Subject: 2006-11-16 Joel Sherrill * clock/ckinit.c: 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. --- c/src/lib/libbsp/sparc/leon2/ChangeLog | 9 + c/src/lib/libbsp/sparc/leon2/clock/ckinit.c | 261 ++++------------------------ 2 files changed, 46 insertions(+), 224 deletions(-) (limited to 'c') diff --git a/c/src/lib/libbsp/sparc/leon2/ChangeLog b/c/src/lib/libbsp/sparc/leon2/ChangeLog index d8a1178998..2b14897432 100644 --- a/c/src/lib/libbsp/sparc/leon2/ChangeLog +++ b/c/src/lib/libbsp/sparc/leon2/ChangeLog @@ -1,3 +1,12 @@ +2006-11-16 Joel Sherrill + + * clock/ckinit.c: 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. + 2006-11-15 Joel Sherrill * Makefile.am: Merge c_rtems_main() into boot_card(). This eliminated a diff --git a/c/src/lib/libbsp/sparc/leon2/clock/ckinit.c b/c/src/lib/libbsp/sparc/leon2/clock/ckinit.c index 3ff92a7dba..5b63cdf366 100644 --- a/c/src/lib/libbsp/sparc/leon2/clock/ckinit.c +++ b/c/src/lib/libbsp/sparc/leon2/clock/ckinit.c @@ -6,244 +6,57 @@ * The tick frequency is directly programmed to the configured number of * microseconds per tick. * - * COPYRIGHT (c) 1989-1998. + * COPYRIGHT (c) 1989-2006. * On-Line Applications Research Corporation (OAR). * + * Modified for LEON BSP + * COPYRIGHT (c) 2004. + * Gaisler Research. + * * 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. * - * Ported to LEON implementation of the SPARC by On-Line Applications - * Research Corporation (OAR) under contract to the European Space - * Agency (ESA). - * - * LEON modifications of respective RTEMS file: COPYRIGHT (c) 1995. - * European Space Agency. - * * $Id$ */ -#include - #include -#include - -/* - * The Real Time Clock Counter Timer uses this trap type. - */ - -#define CLOCK_VECTOR LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER1 ) - -/* - * Clock ticks since initialization - */ - -volatile rtems_unsigned32 Clock_driver_ticks; - -/* - * This is the value programmed into the count down timer. It - * is artificially lowered when SIMSPARC_FAST_IDLE is defined to - * cut down how long we spend in the idle task while executing on - * the simulator. - */ - -extern rtems_unsigned32 CPU_SPARC_CLICKS_PER_TICK; +#include -rtems_isr_entry Old_ticker; - -void Clock_exit( void ); - -/* - * These are set by clock driver during its init - */ - -rtems_device_major_number rtems_clock_major = ~0; -rtems_device_minor_number rtems_clock_minor; - -/* - * Clock_isr - * - * This is the clock tick interrupt handler. - * - * Input parameters: - * vector - vector number - * - * Output parameters: NONE - * - * Return values: NONE - * - */ - -rtems_isr Clock_isr( - rtems_vector_number vector -) -{ - /* - * If we are in "fast idle" mode, then the value for clicks per tick - * is lowered to decrease the amount of time spent executing the idle - * task while using the SPARC Instruction Simulator. - */ - -#if SIMSPARC_FAST_IDLE - LEON_REG.Real_Time_Clock_Counter = CPU_SPARC_CLICKS_PER_TICK; - LEON_REG_Set_Real_Time_Clock_Timer_Control( - LEON_REG_TIMER_COUNTER_ENABLE_COUNTING | - LEON_REG_TIMER_COUNTER_LOAD_COUNTER - ); +#if SIMSPARC_FAST_IDLE==1 +#define CLOCK_DRIVER_USE_FAST_IDLE #endif - /* - * The driver has seen another tick. - */ - - Clock_driver_ticks += 1; - - /* - * Real Time Clock counter/timer is set to automatically reload. - */ - - rtems_clock_tick(); -} - /* - * Install_clock - * - * This routine actually performs the hardware initialization for the clock. - * - * Input parameters: - * clock_isr - clock interrupt service routine entry point - * - * Output parameters: NONE - * - * Return values: NONE - * - */ - -void Install_clock( - rtems_isr_entry clock_isr -) -{ - Clock_driver_ticks = 0; - - if ( BSP_Configuration.ticks_per_timeslice ) { - Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 ); - - LEON_REG.Timer_Reload_1 = CPU_SPARC_CLICKS_PER_TICK - 1; - - LEON_REG.Timer_Control_1 = ( - LEON_REG_TIMER_COUNTER_ENABLE_COUNTING | - LEON_REG_TIMER_COUNTER_RELOAD_AT_ZERO | - LEON_REG_TIMER_COUNTER_LOAD_COUNTER - ); - - atexit( Clock_exit ); - } - -} - -/* - * Clock_exit - * - * This routine allows the clock driver to exit by masking the interrupt and - * disabling the clock's counter. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: NONE - * - */ - -void Clock_exit( void ) -{ - if ( BSP_Configuration.ticks_per_timeslice ) { - LEON_Mask_interrupt( LEON_INTERRUPT_TIMER1 ); - - LEON_REG.Timer_Control_1 = 0; - - /* do not restore old vector */ - } -} - -/* - * Clock_initialize - * - * This routine initializes the clock driver. - * - * Input parameters: - * major - clock device major number - * minor - clock device minor number - * parg - pointer to optional device driver arguments - * - * Output parameters: NONE - * - * Return values: - * rtems_device_driver status code + * The Real Time Clock Counter Timer uses this trap type. */ -rtems_device_driver Clock_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp -) -{ - Install_clock( Clock_isr ); - - /* - * make major/minor avail to others such as shared memory driver - */ - - rtems_clock_major = major; - rtems_clock_minor = minor; - - return RTEMS_SUCCESSFUL; -} - -/* - * Clock_control - * - * This routine is the clock device driver control entry point. - * - * Input parameters: - * major - clock device major number - * minor - clock device minor number - * parg - pointer to optional device driver arguments - * - * Output parameters: NONE - * - * Return values: - * rtems_device_driver status code - */ +#define CLOCK_VECTOR LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER1 ) -rtems_device_driver Clock_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp -) -{ - rtems_unsigned32 isrlevel; - rtems_libio_ioctl_args_t *args = pargp; - - if (args == 0) - goto done; - - /* - * This is hokey, but until we get a defined interface - * to do this, it will just be this simple... - */ - - if (args->command == rtems_build_name('I', 'S', 'R', ' ')) - { - Clock_isr(CLOCK_VECTOR); - } - else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) - { - rtems_interrupt_disable( isrlevel ); - (void) set_vector( args->buffer, CLOCK_VECTOR, 1 ); - rtems_interrupt_enable( isrlevel ); - } - -done: - return RTEMS_SUCCESSFUL; -} +#define Clock_driver_support_at_tick() + +#define Clock_driver_support_install_isr( _new, _old ) \ + do { \ + _old = set_vector( _new, CLOCK_VECTOR, 1 ); \ + } while(0) + +extern int CLOCK_SPEED; + +#define Clock_driver_support_initialize_hardware() \ + do { \ + LEON_REG.Timer_Reload_1 = BSP_Configuration.microseconds_per_tick - 1; \ + \ + LEON_REG.Timer_Control_1 = ( \ + LEON_REG_TIMER_COUNTER_ENABLE_COUNTING | \ + LEON_REG_TIMER_COUNTER_RELOAD_AT_ZERO | \ + LEON_REG_TIMER_COUNTER_LOAD_COUNTER \ + ); \ + } while (0) + +#define Clock_driver_support_shutdown_hardware() \ + do { \ + LEON_Mask_interrupt( LEON_INTERRUPT_TIMER1 ); \ + LEON_REG.Timer_Control_1 = 0; \ + } while (0) + +#include "../../../shared/clockdrv_shell.c" -- cgit v1.2.3