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kernel/linux-rt-4.4.41/arch/arm/include/asm/v7m.h 1.6 KB
5113f6f70   김현기   kernel add
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  /*
   * Common defines for v7m cpus
   */
  #define V7M_SCS_ICTR			IOMEM(0xe000e004)
  #define V7M_SCS_ICTR_INTLINESNUM_MASK		0x0000000f
  
  #define BASEADDR_V7M_SCB		IOMEM(0xe000ed00)
  
  #define V7M_SCB_CPUID			0x00
  
  #define V7M_SCB_ICSR			0x04
  #define V7M_SCB_ICSR_PENDSVSET			(1 << 28)
  #define V7M_SCB_ICSR_PENDSVCLR			(1 << 27)
  #define V7M_SCB_ICSR_RETTOBASE			(1 << 11)
  
  #define V7M_SCB_VTOR			0x08
  
  #define V7M_SCB_AIRCR			0x0c
  #define V7M_SCB_AIRCR_VECTKEY			(0x05fa << 16)
  #define V7M_SCB_AIRCR_SYSRESETREQ		(1 << 2)
  
  #define V7M_SCB_SCR			0x10
  #define V7M_SCB_SCR_SLEEPDEEP			(1 << 2)
  
  #define V7M_SCB_CCR			0x14
  #define V7M_SCB_CCR_STKALIGN			(1 << 9)
  
  #define V7M_SCB_SHPR2			0x1c
  #define V7M_SCB_SHPR3			0x20
  
  #define V7M_SCB_SHCSR			0x24
  #define V7M_SCB_SHCSR_USGFAULTENA		(1 << 18)
  #define V7M_SCB_SHCSR_BUSFAULTENA		(1 << 17)
  #define V7M_SCB_SHCSR_MEMFAULTENA		(1 << 16)
  
  #define V7M_xPSR_FRAMEPTRALIGN			0x00000200
  #define V7M_xPSR_EXCEPTIONNO			0x000001ff
  
  /*
   * When branching to an address that has bits [31:28] == 0xf an exception return
   * occurs. Bits [27:5] are reserved (SBOP). If the processor implements the FP
   * extension Bit [4] defines if the exception frame has space allocated for FP
   * state information, SBOP otherwise. Bit [3] defines the mode that is returned
   * to (0 -> handler mode; 1 -> thread mode). Bit [2] defines which sp is used
   * (0 -> msp; 1 -> psp). Bits [1:0] are fixed to 0b01.
   */
  #define EXC_RET_STACK_MASK			0x00000004
  #define EXC_RET_THREADMODE_PROCESSSTACK		0xfffffffd
  
  #ifndef __ASSEMBLY__
  
  enum reboot_mode;
  
  void armv7m_restart(enum reboot_mode mode, const char *cmd);
  
  #endif /* __ASSEMBLY__ */