update

Author: liduanjun

4.驱动/ARM体系结构与结构技术/备课/Day5/GIC.md

@@ -0,0 +1,45 @@
+# GIC - Generic Interrupt Controller 通用中断控制器
+
+## GIC 的作用
+
+* 管理中断源
+* 控制中断行为
+* 将中断信号路由至多个处理器
+
+当GIC具有安全扩展时，它可以接收FIQ - Fast Interrupt Request
+
+## GIC 的特性
+
+* 支持三种类型的中断
+	* SGI - Software Generated Interrupt
+	* PPI - Private Peripheral Interrupt
+	* SPI - Share Peripheral Interrupt
+* 通过编程来配置中断
+	* 中断的安全状态
+	* 中断的优先级
+	* 可用或禁用中断
+	* 处理器接收中断
+* 中断的状态
+	* Inactive
+	* Pending
+	* Active
+	* Active and Pending
+	* ![Interrupt Handling State Machine](resource/images/InterruptHandlingStateMachine.png)
+* 中断的分发
+	* 1-N : 适合 SPI - Share Peripheral Interrupt
+	* N-N : 适合 SGI - Software-Generated Interrupt
+* 模式组
+	* 多组中断
+	* 多组寄存器
+
+## GIC Block
+
+![GICBlock](resource/images/GICBlock.png)
+
+## Distributor Block
+
+![DistributorBlock](resource/images/DistributorBlock.png)
+
+## CPU interface
+
+![CPUInterface](resource/images/CPUInterface.png)

4.驱动/ARM体系结构与结构技术/备课/Day5/KeyInterrupt.md

@@ -44,20 +44,20 @@ typedef struct {
 ## 按键中断的核心代码-GIC设置
 ```
 /*
-	 * GIC interrupt controller:
-	 * */
+* GIC interrupt controller:
+*/
 
-	// Enables the corresponding interrupt SPI25, SPI26 -- Key_2, Key_3
-	ICDISER.ICDISER1 |= (0x1 << 25) | (0x1 << 26);
+// Enables the corresponding interrupt SPI25, SPI26 -- Key_2, Key_3
+ICDISER.ICDISER1 |= (0x1 << 25) | (0x1 << 26);
 
-	CPU0.ICCICR |= 0x1; //Global enable for signaling of interrupts
+CPU0.ICCICR |= 0x1; //Global enable for signaling of interrupts
 
-	CPU0.ICCPMR = 0xFF; //The priority mask level.Priority filter. threshold
+CPU0.ICCPMR = 0xFF; //The priority mask level.Priority filter. threshold
 
-	ICDDCR = 1; 	//Bit1:  GIC monitors the peripheral interrupt signals and
-					//		forwards pending interrupts to the CPU interfaces2
+ICDDCR = 1; 	//Bit1:  GIC monitors the peripheral interrupt signals and
+				//		forwards pending interrupts to the CPU interfaces2
 
-	ICDIPTR.ICDIPTR14 = 0x01010101;	//SPI25  SPI26  interrupts are sent to processor 0
+ICDIPTR.ICDIPTR14 = 0x01010101;	//SPI25  SPI26  interrupts are sent to processor 0
 ```
 
 * ICDISER.ICDISER1