shared/start/showbats.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  Display the PowerPC BAT Registers
0005  *
0006  *  COPYRIGHT (c) 1989-2007.
0007  *  On-Line Applications Research Corporation (OAR).
0008  *
0009  * Redistribution and use in source and binary forms, with or without
0010  * modification, are permitted provided that the following conditions
0011  * are met:
0012  * 1. Redistributions of source code must retain the above copyright
0013  *    notice, this list of conditions and the following disclaimer.
0014  * 2. Redistributions in binary form must reproduce the above copyright
0015  *    notice, this list of conditions and the following disclaimer in the
0016  *    documentation and/or other materials provided with the distribution.
0017  *
0018  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0019  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0020  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0021  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0022  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0023  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0024  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0025  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0026  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0027  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0028  * POSSIBILITY OF SUCH DAMAGE.
0029  */
0030
0031 #include <inttypes.h>
0032 #include <string.h>
0033
0034 #include <bsp.h>
0035 #include <rtems/bspIo.h>
0036 #include <libcpu/spr.h>
0037 #include <libcpu/powerpc-utility.h>
0038
0039 void printBAT( int bat, uint32_t upper, uint32_t lower )
0040 {
0041   uint32_t lowest_addr;
0042   uint32_t size;
0043
0044   printk("BAT%d raw(upper=0x%08" PRIx32 ", lower=0x%08" PRIx32 ") ", bat, upper, lower );
0045
0046   lowest_addr = (upper & 0xFFFE0000);
0047   size = (((upper & 0x00001FFC) >> 2) + 1) * (128 * 1024);
0048   printk(" range(0x%08" PRIx32 ", 0x%08" PRIx32 ") %s%s %s%s%s%s %s\n",
0049     lowest_addr,
0050     lowest_addr + (size - 1),
0051     (upper & 0x01) ? "P" : "p",
0052     (upper & 0x02) ? "S" : "s",
0053     (lower & 0x08) ? "G" : "g",
0054     (lower & 0x10) ? "M" : "m",
0055     (lower & 0x20) ? "I" : "i",
0056     (lower & 0x40) ? "W" : "w",
0057     (lower & 0x01) ? "Read Only" :
0058       ((lower & 0x02) ? "Read/Write" : "No Access")
0059   );
0060 }
0061
0062 void ShowBATS(void){
0063   uint32_t lower;
0064   uint32_t upper;
0065
0066   __MFSPR(536, upper); __MFSPR(537, lower); printBAT( 0, upper, lower );
0067   __MFSPR(538, upper); __MFSPR(539, lower); printBAT( 1, upper, lower );
0068   __MFSPR(540, upper); __MFSPR(541, lower); printBAT( 2, upper, lower );
0069   __MFSPR(542, upper); __MFSPR(543, lower); printBAT( 3, upper, lower );
0070 }