pmpcfg6

PMP Configuration Register 6

PMP entry configuration

Attributes

CSR Address

0x3a6

Defining extension

  • Smpmp, version >= 0

Length

64-bit

Privilege Mode

M

Format

pmpcfg6 format
Figure 1. pmpcfg6 format

Field Summary

Name Location Type Reset Value

pmp24cfg

7:0

RO

0

pmp25cfg

15:8

RO

0

pmp26cfg

23:16

RO

0

pmp27cfg

31:24

RO

0

pmp28cfg

39:32

RO

0

pmp29cfg

47:40

RO

0

pmp30cfg

55:48

RO

0

pmp31cfg

63:56

RO

0

Fields

pmp24cfg

Location

pmpcfg6[7:0]

Description

PMP configuration for entry 24

The bits are as follows:

Name

Location

Description +

L

7

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

6:5

Reserved Writes shall be ignored.

A

4:3

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

2

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

1

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

0

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp24cfg & 0x18) != 0x10 {
    return csr_value.pmp24cfg;
  }
}
return CSR[pmpcfg6].pmp24cfg;

pmp25cfg

Location

pmpcfg6[15:8]

Description

PMP configuration for entry 25

The bits are as follows:

Name

Location

Description +

L

15

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

14:13

Reserved Writes shall be ignored.

A

12:11

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

10

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

9

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

8

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp25cfg & 0x18) != 0x10 {
    return csr_value.pmp25cfg;
  }
}
return CSR[pmpcfg6].pmp25cfg;

pmp26cfg

Location

pmpcfg6[23:16]

Description

PMP configuration for entry 26

The bits are as follows:

Name

Location

Description +

L

23

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

22:21

Reserved Writes shall be ignored.

A

20:19

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

18

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

17

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

16

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp26cfg & 0x18) != 0x10 {
    return csr_value.pmp26cfg;
  }
}
return CSR[pmpcfg6].pmp26cfg;

pmp27cfg

Location

pmpcfg6[31:24]

Description

PMP configuration for entry 27

The bits are as follows:

Name

Location

Description +

L

31

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

30:29

Reserved Writes shall be ignored.

A

28:27

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

26

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

25

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

24

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp27cfg & 0x18) != 0x10 {
    return csr_value.pmp27cfg;
  }
}
return CSR[pmpcfg6].pmp27cfg;

pmp28cfg

Location

pmpcfg6[39:32]

Description

PMP configuration for entry 28

The bits are as follows:

Name

Location

Description +

L

39

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

38:37

Reserved Writes shall be ignored.

A

36:35

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

34

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

33

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

32

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp28cfg & 0x18) != 0x10 {
    return csr_value.pmp28cfg;
  }
}
return CSR[pmpcfg6].pmp28cfg;

pmp29cfg

Location

pmpcfg6[47:40]

Description

PMP configuration for entry 29

The bits are as follows:

Name

Location

Description +

L

47

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

46:45

Reserved Writes shall be ignored.

A

44:43

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

42

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

41

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

40

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp29cfg & 0x18) != 0x10 {
    return csr_value.pmp29cfg;
  }
}
return CSR[pmpcfg6].pmp29cfg;

pmp30cfg

Location

pmpcfg6[55:48]

Description

PMP configuration for entry 30

The bits are as follows:

Name

Location

Description +

L

55

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

54:53

Reserved Writes shall be ignored.

A

52:51

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

50

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

49

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

48

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp30cfg & 0x18) != 0x10 {
    return csr_value.pmp30cfg;
  }
}
return CSR[pmpcfg6].pmp30cfg;

pmp31cfg

Location

pmpcfg6[63:56]

Description

PMP configuration for entry 31

The bits are as follows:

Name

Location

Description +

L

63

Locks the entry from further modification. Additionally, when set, PMP checks also apply to M-mode for the entry.

-

62:61

Reserved Writes shall be ignored.

A

60:59

Address matching mode. One of:

+ [when="PMP_GRANULARITY < 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NA4 (2) - Naturally aligned four-byte region * NAPOT (3) - Natrually aligned power of two

+ [when="PMP_GRANULARITY >= 2"] * OFF (0) - Null region (disabled) * TOR (1) - Top of range * NAPOT (3) - Natrually aligned power of two

+

Naturally aligned four-byte region, NA4 (2), is not valid (not needed when the PMP granularity is larger than 4 bytes).

+

X

58

When clear, instruction fetchs cause an Access Fault for the matching region and privilege mode.

W

57

When clear, stores and AMOs cause an Access Fault for the matching region and privilege mode.

R

56

When clear, loads cause an Access Fault for the matching region and privilege mode.

The combination of R = 0, W = 1 is reserved.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.

Reset value

0

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (! {
  if ((false) || csr_value.pmp31cfg & 0x18) != 0x10 {
    return csr_value.pmp31cfg;
  }
}
return CSR[pmpcfg6].pmp31cfg;