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| author | Vikas Manocha <vikas.manocha@st.com> | 2017-05-03 23:38:55 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-05-12 12:37:06 (GMT) |
| commit | 96b61ab15c3a477ee14bb7e97faa2d8e1cdf3874 (patch) | |
| tree | eaffd6c197f98721b38a699e8adf45db40b49179 /arch/arm/include/asm/armv7m.h | |
| parent | df951c4039a1d54fdb3d9b4838c6e4fc8be53cd0 (diff) | |
| download | u-boot-96b61ab15c3a477ee14bb7e97faa2d8e1cdf3874.tar.xz | |
armv7m: add MPU configuration support
Cortex-M archs support option memory protection unit (MPU). MPU is used
to set the memory types, attributes, access permissions for different regions,
cache policies of the device.
e.g. using MPU it is possible to configure memory region as device memory
or strongly ordered, memory attributes like execute never, cache policies
like write-back or write-through.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Diffstat (limited to 'arch/arm/include/asm/armv7m.h')
| -rw-r--r-- | arch/arm/include/asm/armv7m.h | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/arm/include/asm/armv7m.h b/arch/arm/include/asm/armv7m.h index 9a6224f..af8a97e 100644 --- a/arch/arm/include/asm/armv7m.h +++ b/arch/arm/include/asm/armv7m.h @@ -70,25 +70,5 @@ struct v7m_mpu { }; #define V7M_MPU ((struct v7m_mpu *)V7M_MPU_BASE) -#define V7M_MPU_CTRL_ENABLE (1 << 0) -#define V7M_MPU_CTRL_HFNMIENA (1 << 1) - -#define V7M_MPU_CTRL_ENABLE (1 << 0) -#define V7M_MPU_CTRL_DISABLE (0 << 0) -#define V7M_MPU_CTRL_HFNMIENA (1 << 1) - -#define V7M_MPU_RASR_EN (1 << 0) -#define V7M_MPU_RASR_SIZE_BITS 1 -#define V7M_MPU_RASR_SIZE_4GB (31 << V7M_MPU_RASR_SIZE_BITS) -#define V7M_MPU_RASR_SIZE_8MB (22 << V7M_MPU_RASR_SIZE_BITS) - -#define V7M_MPU_RASR_TEX_SHIFT 19 -#define V7M_MPU_RASR_S_SHIFT 18 -#define V7M_MPU_RASR_C_SHIFT 17 -#define V7M_MPU_RASR_B_SHIFT 16 -#define V7M_MPU_RASR_AP_RW_RW (3 << 24) -#define V7M_MPU_RASR_XN_ENABLE (0 << 28) -#define V7M_MPU_RASR_XN_DISABLE (1 << 28) - #endif /* !defined(__ASSEMBLY__) */ #endif /* ARMV7M_H */ |