pmpaddr25

PMP Address 25

PMP entry address

Attributes

CSR Address	0x3c9
Defining extension	Smpmp, version >= 0
Length	64-bit
Privilege Mode	M

CSR Address

0x3c9

Defining extension

Smpmp, version >= 0

Length

64-bit

Privilege Mode

Format

Figure 1. pmpaddr25 format

Field Summary

Name Location Type Reset Value

Name	Location	Type	Reset Value
`ADDR`	63:0	RO	0

ADDR

63:0

Fields

`ADDR`

Location: pmpaddr25[63:0]
Description: Bits PHYS_ADDR_WIDTH-1:2 of the address specifier for PMP entry 25 (or, if pmp26cfg.A == TOR, for PMP entry 26).
Type

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

Reset value

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 (csr_value.ADDR >= (14)) {
  return UNDEFINED_LEGAL_DETERMINISTIC;
} else {
  return csr_value.ADDR;
}

Software read

This CSR may return a value that is different from what is stored in hardware.

Pruned
Original

Bits<PHYS_ADDR_WIDTH - 2> mask = {10{1'b1}};
return 0;

if (XLEN == 32) {
  if ((PMP_GRANULARITY >= 16) && (CSR[pmpcfg6].pmp25cfg[4] == 1)) {
    return CSR[pmpaddr25].ADDR | {PMP_GRANULARITY - 3{1'b1}};
  } else if ((PMP_GRANULARITY >= 8) && (CSR[pmpcfg6].pmp25cfg[4] == 0)) {
    Bits<PHYS_ADDR_WIDTH - 2> mask = {PMP_GRANULARITY - 2{1'b1}};
    return CSR[pmpaddr25].ADDR & ~mask;
  } else {
    return CSR[pmpaddr25].ADDR;
  }
} else {
  if ((PMP_GRANULARITY >= 16) && (CSR[pmpcfg6].pmp25cfg[4] == 1)) {
    return CSR[pmpaddr25].ADDR | {PMP_GRANULARITY - 3{1'b1}};
  } else if ((PMP_GRANULARITY >= 8) && (CSR[pmpcfg6].pmp25cfg[4] == 0)) {
    Bits<PHYS_ADDR_WIDTH - 2> mask = {PMP_GRANULARITY - 2{1'b1}};
    return CSR[pmpaddr25].ADDR & ~mask;
  } else {
    return CSR[pmpaddr25].ADDR;
  }
}