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Xtensa ESP32: Fix APP CPU startup... Can't use semaphores on the IDLE thread.

This commit is contained in:
Gregory Nutt 2016-12-20 11:26:37 -06:00
parent 6d5a718b98
commit 81697f2285
2 changed files with 10 additions and 19 deletions
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22
arch/xtensa/src/esp32/esp32_cpustart.c
View File

@ -41,13 +41,12 @@
#include <stdint.h>
#include <stdbool.h>
#include <semaphore.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/sched.h>
#include <nuttx/semaphore.h>
#include <nuttx/spinlock.h>
#include <nuttx/sched_note.h>
#include "sched/sched.h"
@ -65,7 +64,7 @@
****************************************************************************/
static volatile bool g_appcpu_started;
static sem_t g_appcpu_interlock;
static volatile spinlock_t g_appcpu_interlock SP_SECTION;
/****************************************************************************
* ROM function prototypes
@ -169,7 +168,7 @@ void xtensa_appcpu_start(void)
/* Handle interlock*/
g_appcpu_started = true;
sem_post(&g_appcpu_interlock);
spin_unlock(&g_appcpu_interlock);
/* Reset scheduler parameters */
@ -271,8 +270,7 @@ int up_cpu_start(int cpu)
* have priority inheritance enabled.
*/
sem_init(&g_appcpu_interlock, 0, 0);
sem_setprotocol(&g_appcpu_interlock, SEM_PRIO_NONE);
spin_initialize(&g_appcpu_interlock, SP_LOCKED);
/* Flush and enable I-cache for APP CPU */
@ -315,16 +313,8 @@ int up_cpu_start(int cpu)
/* And wait for the initial task to run on CPU1 */
while (!g_appcpu_started)
{
ret = sem_wait(&g_appcpu_interlock);
if (ret < 0)
{
DEBUGASSERT(errno == EINTR);
}
}
sem_destroy(&g_appcpu_interlock);
spin_lock(&g_appcpu_interlock);
DEBUGASSERT(g_appcpu_started);
}
return OK;

7
include/nuttx/spinlock.h
View File

@ -145,15 +145,16 @@ spinlock_t up_testset(volatile FAR spinlock_t *lock);
* Initialize a non-reentrant spinlock object to its initial, unlocked state.
*
* Input Parameters:
* lock - A reference to the spinlock object to be initialized.
* lock - A reference to the spinlock object to be initialized.
* state - Initial state of the spinlock {SP_LOCKED or SP_UNLOCKED)
*
* Returned Value:
* None.
*
****************************************************************************/
/* void spin_initialize(FAR spinlock_t *lock); */
#define spin_initialize(i) do { (l) = SP_UNLOCKED; } while (0)
/* void spin_initialize(FAR spinlock_t *lock, spinlock_t state); */
#define spin_initialize(l,s) do { *(l) = (s); } while (0)
/****************************************************************************
* Name: spin_initializer