XPm_DevIoctl EEMI API - 2024.1 English

Versal Adaptive SoC System Software Developers Guide (UG1304)

Document ID
UG1304
Release Date
2024-05-30
Version
2024.1 English

The XPm_DevIoctl EEMI API allows a platform management master to perform specific operations to certain devices.

RPU NODE IDs for Versal devices are as follows:

  • PM_DEV_RPU0_0
  • PM_DEV_RPU0_1

The following table lists the supported operations in Versal devices.

Table 1. XPm_DevIoctl Operations
ID Name Description Arguments
Node ID Arg1 Arg2 Arg3 Return Value
0 IOCTL_GET_RPU_OPER_MODE Returns current RPU operating mode RPU NODE ID - - - Operating mode:

0: LOCKSTEP

1: SPLIT

1 IOCTL_SET_RPU_OPER_MODE Configures RPU operating mode RPU NODE ID Value of operating mode

0: LOCKSTEP

1: SPLIT

- - -
2 IOCTL_RPU_BOOT_ADDR_CONFIG Configures RPU boot address

RPU NODE ID

Value to set for boot address

0: LOVEC/TCM

1: HIVEC/OCM

- - -
3 IOCTL_TCM_COMB_CONFIG Configures TCM to be in split mode or combined mode NODE_RPU_0

NODE_RPU_1

Value to set (Split/Combined)

0: SPLIT

1: COMB

- - -
4 IOCTL_SET_TAPDELAY_BYPASS Enable/disable tap delay bypass NODE_QSPI Type of tap delay

2: QSPI

Tapdelay Enable/Disable

0: DISABLE

1: ENABLE

- -
6 IOCTL_SD_DLL_RESET Resets DLL logic for the SD device NODE_SD_0,

NODE_SD_1

SD DLL Reset type

0: ASSERT

1: RELEASE

2: PULSE

- - -
7 IOCTL_SET_SD_TAPDELAY Sets input/output tap delay for the SD device

NODE_SD_0,

NODE_SD_1

Type of tap delay to set

0: INPUT

1: OUTPUT

Value to set for the tap delay

- -
12 IOCTL_WRITE_GGS (Global General Storage) Writes value to GGS register - GGS register index (0/1/2/3) Register value to be written - -
13 IOCTL_READ_GGS (Global General Storage) Returns GGS register value - GGS register index (0/1/2/3) - - Register value
14 IOCTL_WRITE_PGGS (Persistent Global General Storage) Writes value to PGGS register - PGGS register index (0/1/2/3) Register value to be written - -
15 IOCTL_READ_PGGS (Persistent Global General Storage) Returns PGGS register value - PGGS register index (0/1/2/3) - - Register value
17 IOCTL_SET_BOOT_HEALTH_STATUS Sets healthy bit value to indicate boot health status to firmware - healthy bit value - - -
21 IOCTL_OSPI_MUX_SELECT Select OSPI AXI Multiplexer NODE_OSPI Operation mode

0: Select DMA

1: Select Linear

2: Get mode

- - Get mode

0: DMA

1: Linear

22 IOCTL_USB_SET_STATE Set USB controller in different device power states NODE_USB_0 Requested power state

0: D0

1: D1

2: D2

3: D3

- - -
23 IOCTL_GET_LAST_RESET_REASON Get last reset reason of system - - - -

0 – The POR button was pressed outside of the system

1 – An internal POR was caused by software

2 - One of the other SSIT slices caused a POR

3 - An error caused a POR

7 - JTAG TAP initiated system reset

8 - Error initiated system reset

9 - Software initiated system reset

10 - One of the other SSIT slices caused a system reset

15 – Invalid reset reason

24 IOCTL_AIE_ISR_CLEAR Clear AI Engine NPI Interrupts DEV_AIE (0x18224072U) 4-bit NPI Interrupt Clear Mask (wtc)

Bit<3-0> correspond to Interrupt<3-0>

- - -
28

IOCTL_READ_REG

Used to securely read a given offset address for a given node ID. - Offset count (=1) - -
29 IOCTL_MASK_WRITE_REG Used to securely write to a given offset address for a given node ID. - Offset mask Value -
33 IOCTL_AIE_OPS AIEML/AIE1 runtime operations for partition init and tear-down. DEV_AIE or Partition node ID (currently unused). Arg1(15:0) : Start column of partition for which wants to run the operation.

Arg1(31:16): Number of columns in partition (or End Column of partition)

Red value of operation. Here, each bit is related to one operation as below:

Bit value 1 indicate that the operation need to be perform.

- XST_SUCCESS or Error Code.
34 IOCTL_GET_QOS Get device QoS value - - - - Response returns two values:

0: Default QoS value

1: Current QoS value

37 IOCTL_PREPARE_DDR_SHUTDOWN 1 Prepare LPDDR SDRAM device for shutdown PM_DEV_DDR_0       XST_SUCCESS or XPM_INVALID_DEVICE_ID or XPM_ERR_DEVICE_STATUS or Other Error Code
  1. As per the JEDEC LPDDR SDRAM specification, an uncontrolled power off sequence can occur maximum of 400 times over the life of device. The LPDDR SDRAM device clock enable (CKE) must be held LOW while powering off the device.
Note: IOCTL_GET_QOS currently only supports AI Engine partition nodes for AI Engine clock frequency. The default QoS represents the original boot time divider value and the current QoS value represents the current divider value that is set.
Table 2. Operations
31st to 10th 9th 8th 7th 6th 5th 4th 3rd 2nd 1st 0th
Reserved Zeroization of Memtile (Supported for AI Engine2 only) Zeroization of data memory Zeroization of program memory Set L2 controller NPI INTR Enable AXI4 error events Disable column clock buffer Zeroization of program and data memories Enable column clock buffer Shim reset Column reset