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08d9c383ac
This patch moves all the declarations relevant to parallel into their own header in include/parallel.h The corresponding functions implementations are already in parallel.c, so the declarations naturally can be in parallel.h Currently, most of the declarations reside in flash.h making it difficult to really understand file dependency. Change-Id: I69f6e224a7ece373fbd6606e802930a52da1dd85 Signed-off-by: Antonio Vázquez <antoniovazquezblanco@gmail.com> Reviewed-on: https://review.coreboot.org/c/flashrom/+/89503 Reviewed-by: Anastasia Klimchuk <aklm@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.com>
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* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
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* Copyright (C) 2013 Stefan Tauner
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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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/*
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* All ST M50 chips are locked on startup. Most of them have a uniform 64 kB block layout, but some have
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* a non-uniform block/sector segmentation which has to be handled with more care. Some of the non-uniform
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* chips support erasing of the 4 kB sectors with another command.
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*/
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#include "flash.h"
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#include "parallel.h"
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#include "chipdrivers.h"
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static int stm50_erase_sector(struct flashctx *flash, unsigned int addr)
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{
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chipaddr bios = flash->virtual_memory + addr;
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// clear status register
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chip_writeb(flash, 0x50, bios);
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// now start it
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chip_writeb(flash, 0x32, bios);
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chip_writeb(flash, 0xd0, bios);
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programmer_delay(flash, 10);
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uint8_t status = wait_82802ab(flash);
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print_status_82802ab(status);
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return status == 0x80;
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}
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/* Some ST M50* chips do support erasing of sectors. This function will derive the erase function to use from
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* the length of the of the block. For calls that apparently do not address a sector (but a block) we just call
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* the block erase function instead. FIXME: This duplicates the behavior of the remaining erasers for blocks and
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* might be fixed when flashrom supports multiple functions per eraser or erasers that do erase parts of the
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* chip only. */
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int erase_sector_stm50(struct flashctx *flash, unsigned int addr, unsigned int len)
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{
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if (len == 4096)
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return stm50_erase_sector(flash, addr);
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else
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return erase_block_82802ab(flash, addr, len);
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}
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