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63fd9026f1
Struct flashchip is used only for the flashchips array and for operations which do not access hardware, e.g. printing a list of supported flash chips. struct flashctx (flash context) contains all data available in struct flashchip, but it also contains runtime information like mapping addresses. struct flashctx is expected to grow additional members over time, a prime candidate being programmer info. struct flashctx contains all of struct flashchip with identical member layout, but struct flashctx has additional members at the end. The separation between struct flashchip/flashctx shrinks the memory requirement of the big flashchips array and allows future extension of flashctx without having to worry about bloat. Corresponding to flashrom svn r1473. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2004 Tyan Corporation
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* Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com>
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* Copyright (C) 2007 Reinder E.N. de Haan <lb_reha@mveas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "flash.h"
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static void write_lockbits_49fl00x(chipaddr bios, unsigned int size,
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unsigned char bits, unsigned int block_size)
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{
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unsigned int i, left = size;
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for (i = 0; left >= block_size; i++, left -= block_size) {
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/* pm49fl002 */
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if (block_size == 16384 && i % 2)
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continue;
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chip_writeb(bits, bios + (i * block_size) + 2);
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}
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}
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int unlock_49fl00x(struct flashctx *flash)
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{
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write_lockbits_49fl00x(flash->virtual_registers, flash->total_size * 1024, 0, flash->page_size);
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return 0;
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}
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int lock_49fl00x(struct flashctx *flash)
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{
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write_lockbits_49fl00x(flash->virtual_registers, flash->total_size * 1024, 1, flash->page_size);
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return 0;
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}
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