RTEMS 6.1-rc6
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This header file provides CMSIS interfaces. More...
Go to the source code of this file.
Data Structures | |
struct | ARM_MPU_Region_t |
Macros | |
#define | ARM_MPU_ARMV7_H |
#define | ARM_MPU_REGION_SIZE_32B ((uint8_t)0x04U) |
#define | ARM_MPU_REGION_SIZE_64B ((uint8_t)0x05U) |
#define | ARM_MPU_REGION_SIZE_128B ((uint8_t)0x06U) |
#define | ARM_MPU_REGION_SIZE_256B ((uint8_t)0x07U) |
#define | ARM_MPU_REGION_SIZE_512B ((uint8_t)0x08U) |
#define | ARM_MPU_REGION_SIZE_1KB ((uint8_t)0x09U) |
#define | ARM_MPU_REGION_SIZE_2KB ((uint8_t)0x0AU) |
#define | ARM_MPU_REGION_SIZE_4KB ((uint8_t)0x0BU) |
#define | ARM_MPU_REGION_SIZE_8KB ((uint8_t)0x0CU) |
#define | ARM_MPU_REGION_SIZE_16KB ((uint8_t)0x0DU) |
#define | ARM_MPU_REGION_SIZE_32KB ((uint8_t)0x0EU) |
#define | ARM_MPU_REGION_SIZE_64KB ((uint8_t)0x0FU) |
#define | ARM_MPU_REGION_SIZE_128KB ((uint8_t)0x10U) |
#define | ARM_MPU_REGION_SIZE_256KB ((uint8_t)0x11U) |
#define | ARM_MPU_REGION_SIZE_512KB ((uint8_t)0x12U) |
#define | ARM_MPU_REGION_SIZE_1MB ((uint8_t)0x13U) |
#define | ARM_MPU_REGION_SIZE_2MB ((uint8_t)0x14U) |
#define | ARM_MPU_REGION_SIZE_4MB ((uint8_t)0x15U) |
#define | ARM_MPU_REGION_SIZE_8MB ((uint8_t)0x16U) |
#define | ARM_MPU_REGION_SIZE_16MB ((uint8_t)0x17U) |
#define | ARM_MPU_REGION_SIZE_32MB ((uint8_t)0x18U) |
#define | ARM_MPU_REGION_SIZE_64MB ((uint8_t)0x19U) |
#define | ARM_MPU_REGION_SIZE_128MB ((uint8_t)0x1AU) |
#define | ARM_MPU_REGION_SIZE_256MB ((uint8_t)0x1BU) |
#define | ARM_MPU_REGION_SIZE_512MB ((uint8_t)0x1CU) |
#define | ARM_MPU_REGION_SIZE_1GB ((uint8_t)0x1DU) |
#define | ARM_MPU_REGION_SIZE_2GB ((uint8_t)0x1EU) |
#define | ARM_MPU_REGION_SIZE_4GB ((uint8_t)0x1FU) |
#define | ARM_MPU_AP_NONE 0U |
#define | ARM_MPU_AP_PRIV 1U |
#define | ARM_MPU_AP_URO 2U |
#define | ARM_MPU_AP_FULL 3U |
#define | ARM_MPU_AP_PRO 5U |
#define | ARM_MPU_AP_RO 6U |
#define | ARM_MPU_RBAR(Region, BaseAddress) |
#define | ARM_MPU_ACCESS_(TypeExtField, IsShareable, IsCacheable, IsBufferable) |
#define | ARM_MPU_RASR_EX(DisableExec, AccessPermission, AccessAttributes, SubRegionDisable, Size) |
#define | ARM_MPU_RASR(DisableExec, AccessPermission, TypeExtField, IsShareable, IsCacheable, IsBufferable, SubRegionDisable, Size) ARM_MPU_RASR_EX(DisableExec, AccessPermission, ARM_MPU_ACCESS_(TypeExtField, IsShareable, IsCacheable, IsBufferable), SubRegionDisable, Size) |
#define | ARM_MPU_ACCESS_ORDERED ARM_MPU_ACCESS_(0U, 1U, 0U, 0U) |
#define | ARM_MPU_ACCESS_DEVICE(IsShareable) ((IsShareable) ? ARM_MPU_ACCESS_(0U, 1U, 0U, 1U) : ARM_MPU_ACCESS_(2U, 0U, 0U, 0U)) |
#define | ARM_MPU_ACCESS_NORMAL(OuterCp, InnerCp, IsShareable) ARM_MPU_ACCESS_((4U | (OuterCp)), IsShareable, ((InnerCp) >> 1U), ((InnerCp) & 1U)) |
#define | ARM_MPU_CACHEP_NOCACHE 0U |
#define | ARM_MPU_CACHEP_WB_WRA 1U |
#define | ARM_MPU_CACHEP_WT_NWA 2U |
#define | ARM_MPU_CACHEP_WB_NWA 3U |
Functions | |
__STATIC_INLINE void | ARM_MPU_Enable (uint32_t MPU_Control) |
__STATIC_INLINE void | ARM_MPU_Disable (void) |
__STATIC_INLINE void | ARM_MPU_ClrRegion (uint32_t rnr) |
__STATIC_INLINE void | ARM_MPU_SetRegion (uint32_t rbar, uint32_t rasr) |
__STATIC_INLINE void | ARM_MPU_SetRegionEx (uint32_t rnr, uint32_t rbar, uint32_t rasr) |
__STATIC_INLINE void | ARM_MPU_OrderedMemcpy (volatile uint32_t *dst, const uint32_t *__RESTRICT src, uint32_t len) |
__STATIC_INLINE void | ARM_MPU_Load (ARM_MPU_Region_t const *table, uint32_t cnt) |
This header file provides CMSIS interfaces.
#define ARM_MPU_ACCESS_ | ( | TypeExtField, | |
IsShareable, | |||
IsCacheable, | |||
IsBufferable | |||
) |
MPU Memory Access Attributes
TypeExtField | Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral. |
IsShareable | Region is shareable between multiple bus masters. |
IsCacheable | Region is cacheable, i.e. its value may be kept in cache. |
IsBufferable | Region is bufferable, i.e. using write-back caching. Cacheable but non-bufferable regions use write-through policy. |
#define ARM_MPU_ACCESS_DEVICE | ( | IsShareable | ) | ((IsShareable) ? ARM_MPU_ACCESS_(0U, 1U, 0U, 1U) : ARM_MPU_ACCESS_(2U, 0U, 0U, 0U)) |
MPU Memory Access Attribute for device memory.
IsShareable | Configures the device memory as shareable or non-shareable. |
#define ARM_MPU_ACCESS_NORMAL | ( | OuterCp, | |
InnerCp, | |||
IsShareable | |||
) | ARM_MPU_ACCESS_((4U | (OuterCp)), IsShareable, ((InnerCp) >> 1U), ((InnerCp) & 1U)) |
MPU Memory Access Attribute for normal memory.
OuterCp | Configures the outer cache policy. |
InnerCp | Configures the inner cache policy. |
IsShareable | Configures the memory as shareable or non-shareable. |
#define ARM_MPU_ACCESS_ORDERED ARM_MPU_ACCESS_(0U, 1U, 0U, 0U) |
MPU Memory Access Attribute for strongly ordered memory.
#define ARM_MPU_CACHEP_NOCACHE 0U |
MPU Memory Access Attribute non-cacheable policy.
#define ARM_MPU_CACHEP_WB_NWA 3U |
MPU Memory Access Attribute write-back, no write allocate policy.
#define ARM_MPU_CACHEP_WB_WRA 1U |
MPU Memory Access Attribute write-back, write and read allocate policy.
#define ARM_MPU_CACHEP_WT_NWA 2U |
MPU Memory Access Attribute write-through, no write allocate policy.
#define ARM_MPU_RASR | ( | DisableExec, | |
AccessPermission, | |||
TypeExtField, | |||
IsShareable, | |||
IsCacheable, | |||
IsBufferable, | |||
SubRegionDisable, | |||
Size | |||
) | ARM_MPU_RASR_EX(DisableExec, AccessPermission, ARM_MPU_ACCESS_(TypeExtField, IsShareable, IsCacheable, IsBufferable), SubRegionDisable, Size) |
MPU Region Attribute and Size Register Value
DisableExec | Instruction access disable bit, 1= disable instruction fetches. |
AccessPermission | Data access permissions, allows you to configure read/write access for User and Privileged mode. |
TypeExtField | Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral. |
IsShareable | Region is shareable between multiple bus masters. |
IsCacheable | Region is cacheable, i.e. its value may be kept in cache. |
IsBufferable | Region is bufferable, i.e. using write-back caching. Cacheable but non-bufferable regions use write-through policy. |
SubRegionDisable | Sub-region disable field. |
Size | Region size of the region to be configured, for example 4K, 8K. |
#define ARM_MPU_RASR_EX | ( | DisableExec, | |
AccessPermission, | |||
AccessAttributes, | |||
SubRegionDisable, | |||
Size | |||
) |
MPU Region Attribute and Size Register Value
DisableExec | Instruction access disable bit, 1= disable instruction fetches. |
AccessPermission | Data access permissions, allows you to configure read/write access for User and Privileged mode. |
AccessAttributes | Memory access attribution, see ARM_MPU_ACCESS_. |
SubRegionDisable | Sub-region disable field. |
Size | Region size of the region to be configured, for example 4K, 8K. |
#define ARM_MPU_RBAR | ( | Region, | |
BaseAddress | |||
) |
MPU Region Base Address Register Value
Region | The region to be configured, number 0 to 15. |
BaseAddress | The base address for the region. |
__STATIC_INLINE void ARM_MPU_ClrRegion | ( | uint32_t | rnr | ) |
Clear and disable the given MPU region.
rnr | Region number to be cleared. |
__STATIC_INLINE void ARM_MPU_Disable | ( | void | ) |
Disable the MPU.
__STATIC_INLINE void ARM_MPU_Enable | ( | uint32_t | MPU_Control | ) |
Enable the MPU.
MPU_Control | Default access permissions for unconfigured regions. |
__STATIC_INLINE void ARM_MPU_Load | ( | ARM_MPU_Region_t const * | table, |
uint32_t | cnt | ||
) |
Load the given number of MPU regions from a table.
table | Pointer to the MPU configuration table. |
cnt | Amount of regions to be configured. |
__STATIC_INLINE void ARM_MPU_OrderedMemcpy | ( | volatile uint32_t * | dst, |
const uint32_t *__RESTRICT | src, | ||
uint32_t | len | ||
) |
Memcpy with strictly ordered memory access, e.g. used by code in ARM_MPU_Load().
dst | Destination data is copied to. |
src | Source data is copied from. |
len | Amount of data words to be copied. |
__STATIC_INLINE void ARM_MPU_SetRegion | ( | uint32_t | rbar, |
uint32_t | rasr | ||
) |
Configure an MPU region.
rbar | Value for RBAR register. |
rasr | Value for RASR register. |
__STATIC_INLINE void ARM_MPU_SetRegionEx | ( | uint32_t | rnr, |
uint32_t | rbar, | ||
uint32_t | rasr | ||
) |
Configure the given MPU region.
rnr | Region number to be configured. |
rbar | Value for RBAR register. |
rasr | Value for RASR register. |