From 7a677fd7d3127d3fd93e32140532d4bad637bb71 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Wed, 13 Dec 2000 22:16:28 +0000 Subject: 2000-12-13 Joel Sherrill * README: Updated. We are now vectoring a clock tick ISR handler. But RTEMS is not returning from the ISR properly. * clock/clockdrv.c: Now causes interrupts but has not been calibrated. * include/bsp.h: Use * startup/Makefile.am: Add setvec.c from shared. * startup/bspstart.c: Initialize the status register (SR) so no interrupts are masked but global interrupts (SR_IEC) are off. Added call to install the ISR prologue code. * wrapup/Makefile.am: Pick up more pieces from libcpu. --- c/src/lib/libbsp/mips/jmr3904/clock/clockdrv.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'c/src/lib/libbsp/mips/jmr3904/clock') diff --git a/c/src/lib/libbsp/mips/jmr3904/clock/clockdrv.c b/c/src/lib/libbsp/mips/jmr3904/clock/clockdrv.c index c49150fba6..7436f1676a 100644 --- a/c/src/lib/libbsp/mips/jmr3904/clock/clockdrv.c +++ b/c/src/lib/libbsp/mips/jmr3904/clock/clockdrv.c @@ -7,12 +7,26 @@ * $Id$ */ -#define CLOCK_VECTOR 0 +#include +#include + +#define CLOCK_VECTOR TX3904_IRQ_TMR0 #define Clock_driver_support_at_tick() +/* XXX */ +#define CLICKS 10000 #define Clock_driver_support_install_isr( _new, _old ) \ - do { _old = 0; } while(0) + do { \ + unsigned32 _clicks = CLICKS; \ + _old = (rtems_isr_entry) set_vector( _new, CLOCK_VECTOR, 1 ); \ + TX3904_TIMER_WRITE( TX3904_TIMER0_BASE, TX3904_TIMER_CCDR, 0x3 ); \ + TX3904_TIMER_WRITE( TX3904_TIMER0_BASE, TX3904_TIMER_CPRA, _clicks ); \ + TX3904_TIMER_WRITE( TX3904_TIMER0_BASE, TX3904_TIMER_TISR, 0x00 ); \ + TX3904_TIMER_WRITE( TX3904_TIMER0_BASE, TX3904_TIMER_ITMR, 0x8001 ); \ + TX3904_TIMER_WRITE( TX3904_TIMER0_BASE, TX3904_TIMER_TCR, 0xC0 ); \ + *((volatile unsigned32 *) 0xFFFFC01C) = 0x00000700; \ + } while(0) #define Clock_driver_support_initialize_hardware() -- cgit v1.2.3