The bit fields of the PMPCFG register are defined in the following table.
| PMPCFG | Bits | Default | Description |
|---|---|---|---|
| PMP | 35:0 | 0x1FF | The PMP value, bits 8:0 are hardwired to 9’h1ff forcing a minimum block size of 4K bytes. Note: 38-bit system address is shifted by 2 when loaded in this register, hence 35:0.
|
| Reserved | 55:36 | 0 | — |
| MODE | 63:56 | 0x00 | PMP Mode |
The bit fields of the MODE register (bits [63:56] of PMPCFG) are defined in the following table.
| MODE Bit Field | Privilege | Description |
|---|---|---|
| 63 | LOCKED | When set to ‘1’ the configuration cannot be changed until a reset occurs. |
| 62:61 | Reserved | — |
| 60:59 | Match | 00=OFF 01=TOR 10=NA4 11=NAPOT Only 00 and 11 are supported, TOR and NAT settings are equivalent to off |
| 58 | Execute Enable | — |
| 57 | Write Enable | — |
| 56 | Read Enable | — |