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#ifndef CYGONCE_HAL_HAL_SPD_H

#define CYGONCE_HAL_HAL_SPD_H

//=============================================================================

//

//      hal_spd.h

//

//      HAL header for SDRAM Serial Presence Detect support.

//

//=============================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under

// the terms of the GNU General Public License as published by the Free

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//

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// WARRANTY; without even the implied warranty of MERCHANTABILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

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// in accordance with section (3) of the GNU General Public License.

//

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//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

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// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   msalter

// Contributors:msalter

// Date:        2002-01-17

// Purpose:     Generic HAL SPD header.

// Usage:       #include <cyg/hal/hal_spd.h>

// Description: This header provides byte numbers and bit definitions for

//              serial EEPROM containing SDRAM module information.

//                           

//####DESCRIPTIONEND####

//

//=============================================================================

// Commonly used bytes

#define SPD_BANKCNT         5   // number of module banks

#define SPD_CONFIG         11   // DIMM configuration type (Parity or not, EEC)

#define SPD_REFRESH        12   // Referesh rate

#define SPD_SDRAM_WIDTH    13   // DRAM width

#define SPD_MOD_ATTRIB     21   // DRAM module attribute

#define SPD_BANKSZ         31   // module bank density

#define SPD_CHECKSUM       63   // checksum for bytes 0-62

// SPD_MOD_ATTRIB bits

#define SPD_ATTRIB_BUF_CTL 0x01 // Buffered Addr/Control inputs

#define SPD_ATTRIB_REG_CTL 0x02 // Registered Addr/Control inputs

#define SPD_ATTRIB_PLL     0x04 // On-card PLL

#define SPD_ATTRIB_BUF_DQ  0x08 // Buffered DQMB inputs

#define SPD_ATTRIB_REG_DQ  0x10 // Registered DQMB inputs

#define SPD_ATTRIB_DIFF    0x20 // Differential clock input

#define SPD_ATTRIB_RRA     0x40 // Redundant Row Address

//-----------------------------------------------------------------------------

#endif // CYGONCE_HAL_HAL_SPD_H

// End of hal_spd.h