xhdmi_hdcp_keys.c File Reference

Overview

This file contains the Xilinx HDCP key loading utility implementation as used in the HDMI example design.

Please see xhdmi_hdcp_keys.h for more details.

MODIFICATION HISTORY:

Ver   Who  Date       Changes



1.0   MG   26-01-2016 Initial release
1.1   YH   04-08-2016 Bypass HDCP Key password for VIPER run in board farm
1.2   GM   12-07-2017 Changed printf usage to xil_printf
                      Changed "\n\r" in xil_printf calls to "\r\n"

Functions
u8	EepromReadByte (void *IicPtr, u16 Address, u8 *BufferPtr, u16 ByteCount)
	This function reads a number of bytes from the IIC serial EEPROM into a specified buffer. More...
int	XHdcp_LoadKeys (void *IicPtr, u8 *Hdcp22Lc128, u32 Hdcp22Lc128Size, u8 *Hdcp22RxPrivateKey, u32 Hdcp22RxPrivateKeySize, u8 *Hdcp14KeyA, u32 Hdcp14KeyASize, u8 *Hdcp14KeyB, u32 Hdcp14KeyBSize)
	This function loads the HDCP keys from the eeprom. More...
int	XHdcp_KeyManagerInit (u32 BaseAddress, u8 *Hdcp14Key)
	This function initialize the HDCP 1.4 key manager. More...

Function Documentation

u8 EepromReadByte	(	void *	IicPtr,
		u16	Address,
		u8 *	BufferPtr,
		u16	ByteCount
	)

This function reads a number of bytes from the IIC serial EEPROM into a specified buffer.

Parameters

Address	contains the address in the EEPROM to read from.
BufferPtr	contains the address of the data buffer to be filled.
ByteCount	contains the number of bytes in the buffer to be read. This value is not constrained by the page size of the device such that up to 64K may be read in one call.

Returns

The number of bytes read. A value less than the specified input value indicates an error.

Note

None.

int XHdcp_KeyManagerInit	(	u32	BaseAddress,
		u8 *	Hdcp14Key
	)

This function initialize the HDCP 1.4 key manager.

Returns

• XST_SUCCESS if action was successful
• XST_FAILURE if action was not successful

int XHdcp_LoadKeys	(	void *	IicPtr,
		u8 *	Hdcp22Lc128,
		u32	Hdcp22Lc128Size,
		u8 *	Hdcp22RxPrivateKey,
		u32	Hdcp22RxPrivateKeySize,
		u8 *	Hdcp14KeyA,
		u32	Hdcp14KeyASize,
		u8 *	Hdcp14KeyB,
		u32	Hdcp14KeyBSize
	)

This function loads the HDCP keys from the eeprom.

Returns

• XST_SUCCESS if action was successful
• XST_FAILURE if action was not successful