cc2538 AES/SHA cryptoprocessor

Driver for the cc2538 AES/SHA cryptoprocessor. More...

Modules
	cc2538 AES
	Driver for the cc2538 AES modes of the security core.
	cc2538 SHA-256
	Driver for the cc2538 SHA-256 mode of the security core.

Files
file	crypto.c
	Implementation of the cc2538 AES/SHA cryptoprocessor driver.
file	crypto.h
	Header file for the cc2538 AES/SHA cryptoprocessor driver.

Functions
void	crypto_isr (void)
	The AES/SHA cryptoprocessor ISR. More...

Crypto drivers return codes
#define	CRYPTO_PENDING   (-1)
#define	CRYPTO_SUCCESS   0
#define	CRYPTO_INVALID_PARAM   1
#define	CRYPTO_NULL_ERROR   2
#define	CRYPTO_RESOURCE_IN_USE   3
#define	CRYPTO_DMA_BUS_ERROR   4

Crypto macros
#define	CRYPTO_IS_ENABLED()   (!!(REG(SYS_CTRL_RCGCSEC) & SYS_CTRL_RCGCSEC_AES))
	Indicates whether the AES/SHA cryptoprocessor is enabled. More...

Crypto functions
void	crypto_init (void)
	Enables and resets the AES/SHA cryptoprocessor.
void	crypto_enable (void)
	Enables the AES/SHA cryptoprocessor.
void	crypto_disable (void)
	Disables the AES/SHA cryptoprocessor. More...
void	crypto_register_process_notification (struct process *p)
	Registers a process to be notified of the completion of a crypto operation. More...

Detailed Description

Driver for the cc2538 AES/SHA cryptoprocessor.

Macro Definition Documentation

#define CRYPTO_IS_ENABLED

(

)

(!!(REG(SYS_CTRL_RCGCSEC) & SYS_CTRL_RCGCSEC_AES))

Indicates whether the AES/SHA cryptoprocessor is enabled.

Returns

Boolean value indicating whether the AES/SHA cryptoprocessor is enabled

Definition at line 69 of file crypto.h.

Function Documentation

void crypto_disable

(

void

)

Disables the AES/SHA cryptoprocessor.

Note

Call this function to save power when the cryptoprocessor is unused.

Definition at line 106 of file crypto.c.

References SYS_CTRL_DCGCSEC, SYS_CTRL_DCGCSEC_AES, SYS_CTRL_RCGCSEC, SYS_CTRL_RCGCSEC_AES, SYS_CTRL_SCGCSEC, and SYS_CTRL_SCGCSEC_AES.

Referenced by main().

void crypto_isr

(

void

)

The AES/SHA cryptoprocessor ISR.

This is the interrupt service routine for the AES/SHA cryptoprocessor.

This ISR is called at worst from PM0, so lpm_exit() does not need to be called.

Definition at line 60 of file crypto.c.

References NULL, NVIC_INT_AES, nvic_interrupt_disable(), nvic_interrupt_unpend(), and process_poll().

void crypto_register_process_notification

(

struct process *

p

)

Registers a process to be notified of the completion of a crypto operation.

Parameters

p	Process to be polled upon IRQ

Note

This function is only supposed to be called by the crypto drivers.

Definition at line 115 of file crypto.c.

Referenced by aes_auth_crypt_get_result(), and aes_auth_crypt_start().