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flash.c
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flash.c
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/**
* @file drivers/flash.c
*
* @section License
* Copyright (C) 2014-2016, Erik Moqvist
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* This file is part of the Simba project.
*/
#include "simba.h"
struct module_t {
int initialized;
};
#include "flash_port.i"
static struct module_t module;
int flash_module_init(void)
{
/* Return immediately if the module is already initialized. */
if (module.initialized == 1) {
return (0);
}
module.initialized = 1;
return (flash_port_module_init());
}
int flash_init(struct flash_driver_t *self_p,
struct flash_device_t *dev_p)
{
ASSERTN(self_p != NULL, EINVAL);
ASSERTN(dev_p != NULL, EINVAL);
self_p->dev_p = dev_p;
return (0);
}
ssize_t flash_read(struct flash_driver_t *self_p,
void *dst_p,
size_t src,
size_t size)
{
ASSERTN(self_p != NULL, EINVAL);
ASSERTN(dst_p != NULL, EINVAL);
ASSERTN(src >= 0 , EINVAL);
ASSERTN(size > 0, EINVAL);
return (flash_port_read(self_p, dst_p, src, size));
}
ssize_t flash_write(struct flash_driver_t *self_p,
size_t dst,
const void *src_p,
size_t size)
{
ASSERTN(self_p != NULL, EINVAL);
ASSERTN(dst >= 0, EINVAL);
ASSERTN(src_p != NULL , EINVAL);
ASSERTN(size > 0, EINVAL);
return (flash_port_write(self_p, dst, src_p, size));
}
int flash_erase(struct flash_driver_t *self_p,
size_t addr,
size_t size)
{
ASSERTN(self_p != NULL, EINVAL);
ASSERTN(addr >= 0, EINVAL);
ASSERTN(size > 0, EINVAL);
return (flash_port_erase(self_p, addr, size));
}