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

bsp/raspberrypi: Simplify SMP support

Browse Source 
There is no need to wait for the secondary processor in
_CPU_SMP_Start_processor() since _CPU_SMP_Finalize_initialization() does
nothing.

The caller of _CPU_SMP_Start_processor() ensures that we do not start
the current processor.
This commit is contained in:
Sebastian Huber
2024-09-23 02:17:45 +02:00
parent bbc87a471d
commit 276d2efb37
1 changed files with 5 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
bsps/arm/raspberrypi/start/bspsmp.c
View File

@@ -42,37 +42,17 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <rtems/score/smpimpl.h>
#include <rtems/score/cpu.h>
#include <bsp/start.h>
#include <bsp/raspberrypi.h>
#include <bsp.h>
#include <bsp/arm-cp15-start.h>
#include <libcpu/arm-cp15.h>
#include <rtems.h>
#include <bsp/irq-generic.h>
#include <assert.h>
#include <bsp/start.h>
bool _CPU_SMP_Start_processor( uint32_t cpu_index )
{
bool started;
uint32_t cpu_index_self = _SMP_Get_current_processor();
BCM2835_REG(BCM2836_MAILBOX_3_WRITE_SET_BASE + 0x10 * cpu_index) = (uint32_t)_start;
_ARM_Send_event();
if (cpu_index != cpu_index_self) {
BCM2835_REG(BCM2836_MAILBOX_3_WRITE_SET_BASE + 0x10 * cpu_index) = (uint32_t)_start;
_ARM_Send_event();
/*
* Wait for secondary processor to complete its basic initialization so
* that we can enable the unified L2 cache.
*/
started = _Per_CPU_State_wait_for_non_initial_state(cpu_index, 0);
} else {
started = false;
}
return started;
return true;
}
uint32_t _CPU_SMP_Initialize(void)