beagle/start/bsp-soc-detect.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup arm_Beagle
0007  *
0008  * @brief
0009  */
0010
0011 /*
0012  * Copyright (C) <2020> Niteesh Babu <niteesh.gs@gmail.com>
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #include <rtems/bspIo.h>
0037 #include <libfdt.h>
0038 #include <bsp/fdt.h>
0039 #include "bsp-soc-detect.h"
0040
0041 int _ti_chip;
0042
0043 void bsp_soc_detect( void )
0044 {
0045   const void *fdt = bsp_fdt_get();
0046
0047   if (fdt_node_offset_by_compatible(fdt, -1, "ti_am33xx") != FDT_ERR_NOTFOUND) {
0048     _ti_chip = CHIP_AM335X;
0049   } else if (fdt_node_offset_by_compatible(fdt, -1, "ti_omap3") != FDT_ERR_NOTFOUND) {
0050     _ti_chip = CHIP_OMAP_3;
0051   } else {
0052     printk("Unknown platform");
0053     _ti_chip = -1;
0054   }
0055 }