Can';t在MINIX中启动SMP AP处理器:启动\u IPI重新启动并挂起
我正在运行minix 3.1.2a,我的目标是启动除BSP以外的APs处理器,我遵循通用启动算法:Can';t在MINIX中启动SMP AP处理器:启动\u IPI重新启动并挂起,c,intel,minix,smp,C,Intel,Minix,Smp,我正在运行minix 3.1.2a,我的目标是启动除BSP以外的APs处理器,我遵循通用启动算法: BSP向AP发送初始IPI BSP延迟(10毫秒) BSP向AP发送启动IPI BSP延迟(200微秒) BSP向AP发送启动IPI BSP延迟(200微秒) 以下是读取ACPI表后执行初始化IPI和启动IPI的函数: void START_APs2() { u32_t trampoline_addr; int UseCPU = 1; u32_t reg; /* Try to
- BSP向AP发送初始IPI
- BSP延迟(10毫秒)
- BSP向AP发送启动IPI
- BSP延迟(200微秒)
- BSP向AP发送启动IPI
- BSP延迟(200微秒)
void START_APs2()
{
u32_t trampoline_addr;
int UseCPU = 1;
u32_t reg;
/* Try to allocate the trampoline for APs to start */
if ((trampoline_addr=find_trampoline()))
{
reg = LOCAL_APIC_READ(LOCAL_APIC_SPIV);
reg |= 0x1FF; /* Disable apic */
LOCAL_APIC_WRITE(LOCAL_APIC_SPIV, reg);
/*======================== INIT IPI==============================*/
CLI();
/*LOCAL_APIC_WRITE(LOCAL_APIC_ICR_HIGH, (unsigned long)cpus[UseCPU].ApicID << 24);*/
LOCAL_APIC_WRITE(LOCAL_APIC_ICR_LOW, (unsigned long) (0x4500) | (trampoline_addr>>12)|(DEST_OTHERS << DEST_SHORT_SHIFT));
/*wait_for_ipi_completion();*/
VerifyLoop();
/*Some delay ...*/
milli_delay(100);
/*=============================STARTUP IPI==============================*/
/* LOCAL_APIC_WRITE(LOCAL_APIC_ICR_HIGH, (unsigned long)cpus[UseCPU].ApicID <<24);*/
LOCAL_APIC_WRITE(LOCAL_APIC_ICR_LOW, (unsigned long) (0x5600) | (trampoline_addr>>12)|(DEST_OTHERS << DEST_SHORT_SHIFT));
VerifyLoop();
/*Some delay ...*/
milli_delay(200);
/* send the IPI */
/*LOCAL_APIC_WRITE(LOCAL_APIC_ICR_HIGH, (unsigned long)cpus[UseCPU].ApicID <<24);*/
LOCAL_APIC_WRITE(LOCAL_APIC_ICR_LOW, (unsigned long) (0x5600) | (trampoline_addr>>12)|(DEST_OTHERS << DEST_SHORT_SHIFT));
VerifyLoop();
/*Some delay ...*/
milli_delay(200);
STI();
/* enable_cpu(this_cpu, WITHOUT_ECHO);*/
if (! AP_running())
{
Aprintf(("\n\n*** WARNING! AP# %d is not running ***\n\n",(unsigned long)cpus[UseCPU].ApicID));
}
else
{
Aprintf("\n\n***AP RUNNING SUCCESSFULLY");
}
}
}
void START_APs2()
{
u32蹦床地址;
int-UseCPU=1;
u32_t reg;
/*尝试分配蹦床供AP开始*/
如果((蹦床添加=查找蹦床())
{
reg=本地APIC读取(本地APIC SPIV);
reg |=0x1FF;/*禁用apic*/
本地APIC写入(本地APIC SPIV,reg);
/*========================================初始IPI==============================*/
CLI();
/*LOCAL_APIC_WRITE(LOCAL_APIC_ICR_HIGH,(unsigned long)cpu[UseCPU].ApicID>12)|(DEST_其他人是否已启用IA32_APIC_BASE MSR中的LAPIC?发送IPI时,向量字段必须为0,断言位应为0,目标模式位应为1(似乎您在使用速记)。发送SIPI时,目标模式位也应为1,并且您不应设置传递状态位。最后请记住,向量场只有8位长,因此您的蹦床长度不得超过0ff000h。非常感谢它现在可以工作。更通用的方法是: