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78ef7fab0e
There are three reasons to add this support: 1. users probably know the interface type of their flashs, then probe can be faster if they give the right type in platform data since wrong types will not be detected. 2. sometimes, detecting can cause destory to system. For example, for kernel XIP, detecting can cause NOR enter a mode instructions can not be fetched right, which will make kernel crash. 3. For a new probe which is not listed in the rom_probe_types, if users assign it in board files, physmap can still probe it. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* For boards with physically mapped flash and using
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* drivers/mtd/maps/physmap.c mapping driver.
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*
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* Copyright (C) 2003 MontaVista Software Inc.
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* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __LINUX_MTD_PHYSMAP__
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#define __LINUX_MTD_PHYSMAP__
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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struct map_info;
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struct physmap_flash_data {
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unsigned int width;
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void (*set_vpp)(struct map_info *, int);
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unsigned int nr_parts;
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unsigned int pfow_base;
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char *probe_type;
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struct mtd_partition *parts;
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};
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/*
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* Board needs to specify the exact mapping during their setup time.
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*/
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void physmap_configure(unsigned long addr, unsigned long size,
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int bankwidth, void (*set_vpp)(struct map_info *, int) );
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#ifdef CONFIG_MTD_PARTITIONS
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/*
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* Machines that wish to do flash partition may want to call this function in
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* their setup routine.
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*
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* physmap_set_partitions(mypartitions, num_parts);
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*
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* Note that one can always override this hard-coded partition with
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* command line partition (you need to enable CONFIG_MTD_CMDLINE_PARTS).
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*/
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void physmap_set_partitions(struct mtd_partition *parts, int num_parts);
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#endif /* defined(CONFIG_MTD_PARTITIONS) */
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#endif /* __LINUX_MTD_PHYSMAP__ */
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