RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

bsps: Fix for clock driver

Browse Source 
Do not use the e300 core decrementer auto-reload feature.  We have to
use the normal decrementer handler since otherwise it is impossible to
pass test sptests/spnsext01.
This commit is contained in:
Sebastian Huber
2012-04-02 13:37:31 +02:00
parent c988f180c7
commit b0b32b8906
1 changed files with 0 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
c/src/lib/libbsp/powerpc/shared/clock/clock.c
View File

@@ -132,25 +132,6 @@ static int ppc_clock_exception_handler_booke( BSP_Exception_frame *frame, unsign
return 0;
}
static int ppc_clock_exception_handler_e300( BSP_Exception_frame *frame, unsigned number)
{
uint32_t msr;
/* Increment clock ticks */
Clock_driver_ticks += 1;
/* Enable external exceptions */
msr = ppc_external_exceptions_enable();
/* Call clock ticker */
ppc_clock_tick();
/* Restore machine state */
ppc_external_exceptions_disable( msr);
return 0;
}
static uint32_t ppc_clock_nanoseconds_since_last_tick(void)
{
uint64_t k = ppc_clock_factor;
@@ -218,14 +199,6 @@ rtems_device_driver Clock_initialize( rtems_device_major_number major, rtems_dev
/* Enable decrementer and auto-reload */
PPC_SET_SPECIAL_PURPOSE_REGISTER_BITS( BOOKE_TCR, BOOKE_TCR_DIE | BOOKE_TCR_ARE);
} else if (cpu_type == PPC_e300c2 || cpu_type == PPC_e300c3) {
/* TODO: Not tested for e300c2 */
/* Enable auto-reload */
PPC_SET_SPECIAL_PURPOSE_REGISTER_BITS( HID0, 0x00000040);
/* Install exception handler */
ppc_exc_set_handler( ASM_DEC_VECTOR, ppc_clock_exception_handler_e300);
} else {
/* Here the decrementer value is actually the interval */
++ppc_clock_decrementer_value;