57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* (C) Copyright 2009
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* Windriver, <www.windriver.com>
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <asm/arch/cpu.h>
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#include <asm/io.h>
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#include <asm/arch/mux.h>
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#define DEBUG_BOARD_CONNECTED 1
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#define DEBUG_BOARD_NOT_CONNECTED 0
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static int debug_board_connected = DEBUG_BOARD_CONNECTED;
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static void zoom2_debug_board_detect(void)
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{
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unsigned int val;
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/* GPIO to query for debug board
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158 db board query, bank 5, index 30 */
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gpio_t *gpio5_base = (gpio_t *)OMAP34XX_GPIO5_BASE;
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val = __raw_readl(&gpio5_base->datain);
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/* Check the bit for gpio 158 */
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if (!(val & (1 << 30)))
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debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
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}
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int zoom2_debug_board_connected(void)
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{
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static int first_time = 1;
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if (first_time) {
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zoom2_debug_board_detect();
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first_time = 0;
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}
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return debug_board_connected;
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}
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