CMSIS-Core (Cortex-A)  
CMSIS-Core support for Cortex-A processor-based devices
 
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System Control Register (SCTLR)

The SCTLR provides the top level control of the system, including its memory system. More...

Content

 SCTLR Bits
 Bit position and mask macros.
 

Data Structures

struct  SCTLR_Type
 Bit field declaration for SCTLR layout. More...
 

Functions

__STATIC_FORCEINLINE void __set_SCTLR (uint32_t sctlr)
 Set SCTLR.
 
__STATIC_FORCEINLINE uint32_t __get_SCTLR (void)
 Get SCTLR.
 

Description

The SCTLR provides the top level control of the system, including its memory system.

In a VMSAv7 implementation, the SCTLR bit assignments are:

Bits Name Function
[31] - Reserved.
[30] TE Thumb Exception enable.
[29] AFE Access flag enable bit.
[28] TRE TEX remap enable bit.
[27:26] - Reserved.
[25] EE Exception Endianness bit.
[24:21] - Reserved.
[20] UWXN Unprivileged write permission implies PL1 Execute Never (XN).
[19] WXN Write permission implies Execute Never (XN).
[18:14] - Reserved.
[13] V Vectors bit.
[12] I Instruction cache enable bit.
[11] Z Branch prediction enable bit.
[10] SW SWP and SWPB enable bit.
[9:3] - Reserved.
[2] C Cache enable bit.
[1] A Alignment bit.
[0] M Address translation enable bit.

Consider using __get_SCTLR and __set_SCTLR for accessing this register.

Function Documentation

◆ __get_SCTLR()

__STATIC_INLINE uint32_t __get_SCTLR ( void  )

Get SCTLR.

Returns
System Control Register value

This function returns the value of the System Control Register (SCTLR).

◆ __set_SCTLR()

__STATIC_INLINE void __set_SCTLR ( uint32_t  sctlr)

Set SCTLR.

This function assigns the given value to the System Control Register.

Parameters
[in]sctlrSystem Control Register value to set

This function assigns the given value to the System Control Register (SCTLR).