147 lines
4.6 KiB
C
147 lines
4.6 KiB
C
/* $NetBSD: ar5315_board.c,v 1.4 2011/07/10 06:24:18 matt Exp $ */
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/*
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* Copyright (c) 2006 Urbana-Champaign Independent Media Center.
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* Copyright (c) 2006 Garrett D'Amore.
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* All rights reserved.
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*
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* Portions of this code were written by Garrett D'Amore for the
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* Champaign-Urbana Community Wireless Network Project.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgements:
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* This product includes software developed by the Urbana-Champaign
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* Independent Media Center.
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* This product includes software developed by Garrett D'Amore.
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* 4. Urbana-Champaign Independent Media Center's name and Garrett
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* D'Amore's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This file provides code to locate board-specific configuration and radio
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* information data in flash for the AR5315.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ar5315_board.c,v 1.4 2011/07/10 06:24:18 matt Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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#include "opt_memsize.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/buf.h>
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#include <dev/cons.h>
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#include <mips/cache.h>
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#include <mips/locore.h>
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#include <mips/cpuregs.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <ah_soc.h> /* XXX really doesn't belong in hal */
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#include <mips/atheros/include/ar5315reg.h>
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#include <mips/atheros/include/arbusvar.h>
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#include <mips/atheros/include/platform.h>
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#include <mips/locore.h>
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#include "com.h"
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/*
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* Locate the Board Configuration data using heuristics.
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* Search backward from the (aliased) end of flash looking
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* for the signature string that marks the start of the data.
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* We search at most 500KB.
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*/
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static const struct ar531x_boarddata *
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ar5315_get_board_info(void)
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{
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static const struct ar531x_boarddata *board = NULL;
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const uint8_t *ptr, *end;
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if (board == NULL) {
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/* search backward in the flash looking for the signature */
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ptr = (const uint8_t *) MIPS_PHYS_TO_KSEG1(AR5315_CONFIG_END
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- 0x1000);
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end = (const uint8_t *)AR5315_CONFIG_BASE;
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/* XXX validate end */
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for (; ptr > end; ptr -= 0x1000)
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if (*(const uint32_t *)ptr == AR531X_BD_MAGIC) {
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board = (const struct ar531x_boarddata *) ptr;
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break;
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}
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}
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return board;
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}
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/*
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* Locate the radio configuration data; it is located relative to the
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* board configuration data.
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*/
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static const void *
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ar5315_get_radio_info(void)
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{
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static const void *radio = NULL;
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const struct ar531x_boarddata *board;
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const uint8_t *baddr, *ptr, *end;
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if (radio)
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goto done;
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board = ar5315_get_board_info();
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if (board == NULL)
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return NULL;
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baddr = (const uint8_t *) board;
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end = (const uint8_t *)MIPS_PHYS_TO_KSEG1(AR5315_RADIO_END);
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for (ptr = baddr + 0x1000; ptr < end; ptr += 0x1000)
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if (*(const uint32_t *)ptr != 0xffffffffU) {
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radio = ptr;
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goto done;
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}
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/* AR2316 moves radio data */
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for (ptr = baddr + 0xf8; ptr < end; ptr += 0x1000)
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if (*(const uint32_t *)ptr != 0xffffffffU) {
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radio = ptr;
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goto done;
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}
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done:
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return radio;
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}
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const struct atheros_boardsw ar5315_boardsw = {
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.absw_get_board_info = ar5315_get_board_info,
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.absw_get_radio_info = ar5315_get_radio_info,
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};
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