Software APIs
dt_edn.h File Reference

Device Tables (DT) for IP edn and top earlgrey. More...

#include "dt_api.h"
#include <stdint.h>

Go to the source code of this file.

Macros

#define OPENTITAN_EDN_HAS_MODE_BOOT   1
 List of supported hardware features.
 
#define OPENTITAN_EDN_HAS_MODE_AUTO   1
 
#define OPENTITAN_EDN_HAS_MODE_SW   1
 
#define OPENTITAN_EDN_HAS_TRACK_SEED_COMPLIANCE   1
 
#define OPENTITAN_EDN_HAS_BUS_CMP_ALERT   1
 

Typedefs

typedef enum dt_edn dt_edn_t
 List of instances.
 
typedef enum dt_edn_reg_block dt_edn_reg_block_t
 List of register blocks.
 
typedef enum dt_edn_irq dt_edn_irq_t
 List of IRQs.
 
typedef enum dt_edn_alert dt_edn_alert_t
 List of Alerts.
 
typedef enum dt_edn_clock dt_edn_clock_t
 List of clock ports.
 
typedef enum dt_edn_reset dt_edn_reset_t
 List of reset ports.
 

Enumerations

enum  dt_edn {
  kDtEdn0 = 0 ,
  kDtEdn1 = 1 ,
  kDtEdnFirst = 0 ,
  kDtEdnCount = 2
}
 List of instances. More...
 
enum  dt_edn_reg_block {
  kDtEdnRegBlockCore = 0 ,
  kDtEdnRegBlockCount = 1
}
 List of register blocks. More...
 
enum  dt_edn_irq {
  kDtEdnIrqEdnCmdReqDone = 0 ,
  kDtEdnIrqEdnFatalErr = 1 ,
  kDtEdnIrqCount = 2
}
 List of IRQs. More...
 
enum  dt_edn_alert {
  kDtEdnAlertRecovAlert = 0 ,
  kDtEdnAlertFatalAlert = 1 ,
  kDtEdnAlertCount = 2
}
 List of Alerts. More...
 
enum  dt_edn_clock {
  kDtEdnClockClk = 0 ,
  kDtEdnClockCount = 1
}
 List of clock ports. More...
 
enum  dt_edn_reset {
  kDtEdnResetRst = 0 ,
  kDtEdnResetCount = 1
}
 List of reset ports. More...
 

Functions

dt_edn_t dt_edn_from_instance_id (dt_instance_id_t inst_id)
 Get the edn instance from an instance ID.
 
dt_instance_id_t dt_edn_instance_id (dt_edn_t dt)
 Get the instance ID of an instance.
 
uint32_t dt_edn_reg_block (dt_edn_t dt, dt_edn_reg_block_t reg_block)
 Get the register base address of an instance.
 
dt_plic_irq_id_t dt_edn_irq_to_plic_id (dt_edn_t dt, dt_edn_irq_t irq)
 Get the PLIC ID of a edn IRQ for a given instance.
 
dt_edn_irq_t dt_edn_irq_from_plic_id (dt_edn_t dt, dt_plic_irq_id_t irq)
 Convert a global IRQ ID to a local edn IRQ type.
 
dt_alert_id_t dt_edn_alert_to_alert_id (dt_edn_t dt, dt_edn_alert_t alert)
 Get the alert ID of a edn alert for a given instance.
 
dt_edn_alert_t dt_edn_alert_from_alert_id (dt_edn_t dt, dt_alert_id_t alert)
 Convert a global alert ID to a local edn alert type.
 
dt_clock_t dt_edn_clock (dt_edn_t dt, dt_edn_clock_t clk)
 Get the clock signal connected to a clock port of an instance.
 
dt_reset_t dt_edn_reset (dt_edn_t dt, dt_edn_reset_t rst)
 Get the reset signal connected to a reset port of an instance.
 

Detailed Description

Device Tables (DT) for IP edn and top earlgrey.

This file contains the type definitions and global functions of the edn.

Definition in file dt_edn.h.

Macro Definition Documentation

◆ OPENTITAN_EDN_HAS_BUS_CMP_ALERT

#define OPENTITAN_EDN_HAS_BUS_CMP_ALERT   1

Definition at line 93 of file dt_edn.h.

◆ OPENTITAN_EDN_HAS_MODE_AUTO

#define OPENTITAN_EDN_HAS_MODE_AUTO   1

Definition at line 90 of file dt_edn.h.

◆ OPENTITAN_EDN_HAS_MODE_BOOT

#define OPENTITAN_EDN_HAS_MODE_BOOT   1

List of supported hardware features.

Definition at line 89 of file dt_edn.h.

◆ OPENTITAN_EDN_HAS_MODE_SW

#define OPENTITAN_EDN_HAS_MODE_SW   1

Definition at line 91 of file dt_edn.h.

◆ OPENTITAN_EDN_HAS_TRACK_SEED_COMPLIANCE

#define OPENTITAN_EDN_HAS_TRACK_SEED_COMPLIANCE   1

Definition at line 92 of file dt_edn.h.

Typedef Documentation

◆ dt_edn_alert_t

List of Alerts.

Alerts are guaranteed to be numbered consecutively from 0.

◆ dt_edn_clock_t

List of clock ports.

Clock ports are guaranteed to be numbered consecutively from 0.

◆ dt_edn_irq_t

typedef enum dt_edn_irq dt_edn_irq_t

List of IRQs.

IRQs are guaranteed to be numbered consecutively from 0.

◆ dt_edn_reg_block_t

List of register blocks.

Register blocks are guaranteed to start at 0 and to be consecutively numbered.

◆ dt_edn_reset_t

List of reset ports.

Reset ports are guaranteed to be numbered consecutively from 0.

Enumeration Type Documentation

◆ dt_edn

enum dt_edn

List of instances.

Enumerator
kDtEdn0 

edn0

kDtEdn1 

edn1

Definition at line 23 of file dt_edn.h.

◆ dt_edn_alert

List of Alerts.

Alerts are guaranteed to be numbered consecutively from 0.

Enumerator
kDtEdnAlertRecovAlert 

This alert is triggered when entropy bus data matches on consecutive clock cycles.

kDtEdnAlertFatalAlert 

This alert triggers (i) if an illegal state machine state is reached, or (ii) if a fatal integrity failure is detected on the TL-UL bus.

Definition at line 59 of file dt_edn.h.

◆ dt_edn_clock

List of clock ports.

Clock ports are guaranteed to be numbered consecutively from 0.

Enumerator
kDtEdnClockClk 

Clock port clk_i.

Definition at line 71 of file dt_edn.h.

◆ dt_edn_irq

enum dt_edn_irq

List of IRQs.

IRQs are guaranteed to be numbered consecutively from 0.

Enumerator
kDtEdnIrqEdnCmdReqDone 

Asserted when a software CSRNG request has completed.

kDtEdnIrqEdnFatalErr 

Asserted when a FIFO error occurs.

Definition at line 48 of file dt_edn.h.

◆ dt_edn_reg_block

List of register blocks.

Register blocks are guaranteed to start at 0 and to be consecutively numbered.

Definition at line 35 of file dt_edn.h.

◆ dt_edn_reset

List of reset ports.

Reset ports are guaranteed to be numbered consecutively from 0.

Enumerator
kDtEdnResetRst 

Reset port rst_ni.

Definition at line 81 of file dt_edn.h.

Function Documentation

◆ dt_edn_alert_from_alert_id()

dt_edn_alert_t dt_edn_alert_from_alert_id ( dt_edn_t dt,
dt_alert_id_t alert )

Convert a global alert ID to a local edn alert type.

Parameters
dtInstance of edn.
alertA global alert ID that belongs to this instance.
Returns
The edn alert, or kDtEdnAlertCount.

Note: This function assumes that the global alert ID belongs to the instance of edn passed in parameter. In other words, it must be the case that dt_edn_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtEdnAlertCount.

Definition at line 129 of file dt_edn.c.

◆ dt_edn_alert_to_alert_id()

dt_alert_id_t dt_edn_alert_to_alert_id ( dt_edn_t dt,
dt_edn_alert_t alert )

Get the alert ID of a edn alert for a given instance.

Note: This function only makes sense if the instance is connected to the Alert Handler. For any instances where the instance is not connected, the return value is unspecified.

Parameters
dtInstance of edn.
alertA edn alert.
Returns
The Alert Handler alert ID of the alert of this instance.

Definition at line 123 of file dt_edn.c.

◆ dt_edn_clock()

Get the clock signal connected to a clock port of an instance.

Parameters
dtInstance of edn.
clkClock port.
Returns
Clock signal.

Definition at line 141 of file dt_edn.c.

◆ dt_edn_from_instance_id()

dt_edn_t dt_edn_from_instance_id ( dt_instance_id_t inst_id)

Get the edn instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters
inst_idInstance ID.
Returns
A edn instance.

Note: This function only makes sense if the instance ID has device type edn, otherwise the returned value is unspecified.

Definition at line 79 of file dt_edn.c.

◆ dt_edn_instance_id()

dt_instance_id_t dt_edn_instance_id ( dt_edn_t dt)

Get the instance ID of an instance.

Parameters
dtInstance of edn.
Returns
The instance ID of that instance.

Definition at line 86 of file dt_edn.c.

◆ dt_edn_irq_from_plic_id()

dt_edn_irq_t dt_edn_irq_from_plic_id ( dt_edn_t dt,
dt_plic_irq_id_t irq )

Convert a global IRQ ID to a local edn IRQ type.

Parameters
dtInstance of edn.
irqA PLIC ID that belongs to this instance.
Returns
The edn IRQ, or kDtEdnIrqCount.

Note: This function assumes that the PLIC ID belongs to the instance of edn passed in parameter. In other words, it must be the case that dt_edn_instance_id(dt) == dt_plic_id_to_instance_id(irq). Otherwise, this function will return kDtEdnIrqCount.

Definition at line 108 of file dt_edn.c.

◆ dt_edn_irq_to_plic_id()

dt_plic_irq_id_t dt_edn_irq_to_plic_id ( dt_edn_t dt,
dt_edn_irq_t irq )

Get the PLIC ID of a edn IRQ for a given instance.

If the instance is not connected to the PLIC, this function will return kDtPlicIrqIdNone.

Parameters
dtInstance of edn.
irqA edn IRQ.
Returns
The PLIC ID of the IRQ of this instance.

Definition at line 98 of file dt_edn.c.

◆ dt_edn_reg_block()

uint32_t dt_edn_reg_block ( dt_edn_t dt,
dt_edn_reg_block_t reg_block )

Get the register base address of an instance.

Parameters
dtInstance of edn.
reg_blockThe register block requested.
Returns
The register base address of the requested block.

Definition at line 91 of file dt_edn.c.

◆ dt_edn_reset()

Get the reset signal connected to a reset port of an instance.

Parameters
dtInstance of edn.
rstReset port.
Returns
Reset signal.

Definition at line 148 of file dt_edn.c.