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