78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
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/*-
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* Copyright (c) 2011 Department of Software Engineering,
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* University of Szeged, Hungary
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* Copyright (c) 2011 Adam Hoka <ahoka@NetBSD.org>
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by the Department of Software Engineering, University of Szeged, Hungary
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Device specific functions for legacy Micron NAND chips
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*
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* Currently supported:
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* MT29F2G08AACWP, MT29F4G08BACWP, MT29F8G08FACWP
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*/
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#include "nand.h"
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#include "onfi.h"
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int
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nand_read_parameters_micron(device_t self, struct nand_chip *chip)
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{
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uint8_t byte;
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KASSERT(chip->nc_manf_id == NAND_MFR_MICRON);
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nand_select(self, true);
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nand_command(self, ONFI_READ_ID);
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nand_address(self, 0x00);
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switch (chip->nc_manf_id) {
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/* three dummy reads */
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nand_read_byte(self, &byte); /* vendor */
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nand_read_byte(self, &byte); /* device */
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nand_read_byte(self, &byte); /* unused */
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/* this is the interesting one */
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nand_read_byte(self, &byte);
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/* TODO actually get info */
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nand_select(self, false);
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return 1;
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break;
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default:
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nand_select(self, false);
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return 1;
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}
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chip->nc_num_luns = 1;
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chip->nc_lun_blocks = chip->nc_size / chip->nc_block_size;
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nand_select(self, false);
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return 0;
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}
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