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/* arch/arm/mach-msm/htc_wifi_nvs.c
*
* Code to extract WiFi calibration information from ATAG set up
* by the bootloader.
*
* Copyright (C) 2008 Google, Inc.
* Author: Dmitry Shmidt <dimitrysh@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program 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 General Public License for more details.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/setup.h>
/* configuration tags specific to msm */
#define ATAG_MSM_WIFI 0x57494649 /* MSM WiFi */
#define MAX_NVS_SIZE 0x800U
static unsigned char wifi_nvs_ram[MAX_NVS_SIZE];
unsigned char *get_wifi_nvs_ram( void )
{
return( wifi_nvs_ram );
}
EXPORT_SYMBOL(get_wifi_nvs_ram);
static int __init parse_tag_msm_wifi(const struct tag *tag)
{
unsigned char *dptr = (unsigned char *)(&tag->u);
unsigned size;
size = min((tag->hdr.size - 2) * sizeof(__u32), MAX_NVS_SIZE);
#ifdef ATAG_MSM_WIFI_DEBUG
unsigned i;
printk("WiFi Data size = %d , 0x%x\n", tag->hdr.size, tag->hdr.tag);
for(i=0;( i < size );i++) {
printk("%02x ", *dptr++);
}
#endif
memcpy( (void *)wifi_nvs_ram, (void *)dptr, size );
return 0;
}
__tagtable(ATAG_MSM_WIFI, parse_tag_msm_wifi);
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