15.11.5 Region STATUSA Register
This register is part of a register group (composed of RCTRL, RSTATUS[A,B,C]) that is repeated IDAU_REGION_NUM times. Register group x controls and returns status of the IDAU region x.
This register is meaningful only for IDAU region types suffixed _B and _W (static configuration), for other types it always reads 0.
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | RSTATUSA |
| Offset: | 0x1004 |
| Reset: | 0x00000000 |
| Property: | PAC Write-Protection |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| MAXSZ[5:0] | |||||||||
| Access | cfg/R | cfg/R | cfg/R | cfg/R | cfg/R | cfg/R | |||
| Reset | x | x | x | x | x | x | |||
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| GRAN[5:0] | |||||||||
| Access | cfg/R | cfg/R | cfg/R | cfg/R | cfg/R | cfg/R | |||
| Reset | x | x | x | x | x | x | |||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| TYPE[3:0] | |||||||||
| Access | cfg/R | cfg/R | cfg/R | cfg/R | |||||
| Reset | x | x | x | x | |||||
Bits 21:16 – MAXSZ[5:0] Command Argument Maximum Size
Bits 13:8 – GRAN[5:0] Region Granularity
_W suffixed types (Watermark based regions): Size in Bytes of one RCTRL[x].ARG LSb.
_B suffixed types (Block based regions): Size in Bytes of a block.
| Value | Description |
|---|---|
| 0x0 | Not Applicable |
| 0x1 - 0xB | Reserved |
| 0xC | (GRAN_4KB) |
| 0xD | (GRAN_8KB) |
| 0xE | (GRAN_16KB) |
| 0xF | (GRAN_32KB) |
| 0x10 | (GRAN_64KB) |
| 0x11 | (GRAN_128KB) |
| 0x12 | (GRAN_256KB) |
| 0x13 | (GRAN_512KB) |
| 0x14 | (GRAN_1MB) |
| 0x15 | (GRAN_2MB) |
| 0x16 | (GRAN_4MB) |
| 0x17 | (GRAN_8MB) |
| 0x18 | (GRAN_16MB) |
| 0x19 | (GRAN_32MB) |
| 0x1A | (GRAN_64MB) |
| 0x1B | (GRAN_128MB) |
| 0x1C | (GRAN_256MB) |
| 0x1D | (GRAN_512MB) |
| 0x1E | (GRAN_1GB) |
| 0x1F | (GRAN_2GB) |
| 0x20 | (GRAN_4GB) |
| 0x21 - 0x3F | Reserved |
Bits 3:0 – TYPE[3:0] IDAU Reion Type
| Value | Description |
|---|---|
| 0x0 | Region is invalid (INVALID) |
| 0x1 | Region is secure (SEC) |
| 0x2 | Region is non secure (NONSEC) |
| 0x3 | Region is non secure, the associated register group implements a watermark configuration (NONSEC_W) |
| 0x4 | Region is either secure or non-secure, the associated register group implements a block configuration (SECnNONSEC_B) |
| 0x5 | Region is either secure or non-secure, configuration is linked to another IDAU region configuration bit (the linked configuration bit identification info is readable from the RSTATUSC register inside the same register group) (SECnNONSEC_L) |
| 0x6 | Region is non-secure callable, the associated register group implements a watermark configuration (NSC_W) |
| 0x7 | Region is exempt from security, the associated register group implements a block configuration (EXEMPT_B) |
| 0x8 - 0xF | Reserved |