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/*! \page License
* Copyright (C) 2009, H&D Wireless AB All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name of H&D Wireless AB may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY H&D WIRELESS AB ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <top_defs.h>
#include <wl_api.h>
#include <fw_download.h>
#include <nvram.h>
#include <printf-stdarg.h>
int fw_download_init(void)
{
nvram_init();
return 0;
}
#define BUF_SIZE 512
size_t fw_read_cb(void* ctx,
const uint8_t** buf,
size_t offset,
size_t len)
{
static uint8_t* fw_buf = NULL;
size_t rlen;
/* when firmware download is completed, this function will be
* invoked one additional time with buf set to NULL. we can
* free the firmware buffer at this time since it's no longer
* needed.
*/
if (NULL == buf) {
if (fw_buf) {
free(fw_buf);
fw_buf = NULL;
}
return 0;
}
/* first call? then initialize flash and allocate a buffer to hold
* firmware data.
*/
if (fw_buf == NULL) {
fw_buf = malloc(BUF_SIZE);
if (fw_buf == NULL) {
printk("could not allocate firmware buffer\n");
return 0;
}
}
/* read at most a full buffer */
rlen = len > BUF_SIZE ? BUF_SIZE : len;
/* read data and update output parameters */
nvram_read(offset, fw_buf, rlen);
*buf = fw_buf;
return rlen;
}
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