OrgApache/incubator-nuttx
OrgApache
/
incubator-nuttx
mirror of https://github.com/apache/incubator-nuttx.git
1
0
Fork 0
Code Issues Releases Wiki Activity

arm_gicv2: cpu 0 wait other cpu gic init done 

After move the SGI irq to group1, other cpu can't response the
sgi request from cpu0 when its gic not initialized.
So let cpu0 wait until all other cpus gic initialize done.

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang 2023-11-02 18:45:25 +08:00 committed by Xiang Xiao
parent 4358eba13a
commit 7f0ab52b12
1 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
arch/arm/src/armv7-a/arm_gicv2.c
View File

@ -43,6 +43,47 @@
#ifdef CONFIG_ARMV7A_HAVE_GICv2
/****************************************************************************
* Private Data
****************************************************************************/
#if defined(CONFIG_SMP) && CONFIG_SMP_NCPUS > 1
static volatile bool g_gic_init_done[CONFIG_SMP_NCPUS];
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: arm_gic_init_done
*
* Description:
* Indicates gic init done, and only cpu0 need wait the gic initialize
* done. Because cpu1 ~ (CONFIG_SMP_NCPUS - 1) may not response the
* interrupt request by cpu0 when the gic not initialize done.
*
****************************************************************************/
#if defined(CONFIG_SMP) && CONFIG_SMP_NCPUS > 1
static void arm_gic_init_done(void)
{
int cpu = up_cpu_index();
int i;
g_gic_init_done[cpu] = true;
if (cpu == 0)
{
for (i = 1; i < CONFIG_SMP_NCPUS; i++)
{
while (!g_gic_init_done[i]);
}
}
}
#else
#define arm_gic_init_done()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
@ -326,6 +367,7 @@ void arm_gic_initialize(void)
putreg32(icddcr, GIC_ICDDCR);
arm_gic_dump("Exit arm_gic_initialize", true, 0);
arm_gic_init_done();
}
/****************************************************************************