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#ifndef CYGONCE_HAL_HAL_SPD_H
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#define CYGONCE_HAL_HAL_SPD_H
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//=============================================================================
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//
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// hal_spd.h
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//
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// HAL header for SDRAM Serial Presence Detect support.
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//
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//=============================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//=============================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): msalter
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// Contributors:msalter
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// Date: 2002-01-17
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// Purpose: Generic HAL SPD header.
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// Usage: #include <cyg/hal/hal_spd.h>
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// Description: This header provides byte numbers and bit definitions for
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// serial EEPROM containing SDRAM module information.
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//
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//####DESCRIPTIONEND####
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//
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//=============================================================================
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// Commonly used bytes
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#define SPD_BANKCNT 5 // number of module banks
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#define SPD_CONFIG 11 // DIMM configuration type (Parity or not, EEC)
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#define SPD_REFRESH 12 // Referesh rate
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#define SPD_SDRAM_WIDTH 13 // DRAM width
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#define SPD_MOD_ATTRIB 21 // DRAM module attribute
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#define SPD_BANKSZ 31 // module bank density
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#define SPD_CHECKSUM 63 // checksum for bytes 0-62
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// SPD_MOD_ATTRIB bits
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#define SPD_ATTRIB_BUF_CTL 0x01 // Buffered Addr/Control inputs
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#define SPD_ATTRIB_REG_CTL 0x02 // Registered Addr/Control inputs
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#define SPD_ATTRIB_PLL 0x04 // On-card PLL
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#define SPD_ATTRIB_BUF_DQ 0x08 // Buffered DQMB inputs
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#define SPD_ATTRIB_REG_DQ 0x10 // Registered DQMB inputs
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#define SPD_ATTRIB_DIFF 0x20 // Differential clock input
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#define SPD_ATTRIB_RRA 0x40 // Redundant Row Address
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//-----------------------------------------------------------------------------
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#endif // CYGONCE_HAL_HAL_SPD_H
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// End of hal_spd.h
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