lib/display_options.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <config.h>
  25 #include <common.h>
  26 #include <linux/ctype.h>
  27 #include <asm/io.h>
  28
  29 int display_options (void)
  30 {
  31         extern char version_string[];
  32
  33 #if defined(BUILD_TAG)
  34         printf ("\n\n%s, Build: %s\n\n", version_string, BUILD_TAG);
  35 #else
  36         printf ("\n\n%s\n\n", version_string);
  37 #endif
  38         return 0;
  39 }
  40
  41 /*
  42  * print sizes as "xxx KiB", "xxx.y KiB", "xxx MiB", "xxx.y MiB",
  43  * xxx GiB, xxx.y GiB, etc as needed; allow for optional trailing string
  44  * (like "\n")
  45  */
  46 void print_size(unsigned long long size, const char *s)
  47 {
  48         unsigned long m = 0, n;
  49         unsigned long long f;
  50         static const char names[] = {'E', 'P', 'T', 'G', 'M', 'K'};
  51         unsigned long d = 10 * ARRAY_SIZE(names);
  52         char c = 0;
  53         unsigned int i;
  54
  55         for (i = 0; i < ARRAY_SIZE(names); i++, d -= 10) {
  56                 if (size >> d) {
  57                         c = names[i];
  58                         break;
  59                 }
  60         }
  61
  62         if (!c) {
  63                 printf("%llu Bytes%s", size, s);
  64                 return;
  65         }
  66
  67         n = size >> d;
  68         f = size & ((1ULL << d) - 1);
  69
  70         /* If there's a remainder, deal with it */
  71         if (f) {
  72                 m = (10ULL * f + (1ULL << (d - 1))) >> d;
  73
  74                 if (m >= 10) {
  75                         m -= 10;
  76                         n += 1;
  77                 }
  78         }
  79
  80         printf ("%lu", n);
  81         if (m) {
  82                 printf (".%ld", m);
  83         }
  84         printf (" %ciB%s", c, s);
  85 }
  86
  87 /*
  88  * Print data buffer in hex and ascii form to the terminal.
  89  *
  90  * data reads are buffered so that each memory address is only read once.
  91  * Useful when displaying the contents of volatile registers.
  92  *
  93  * parameters:
  94  *    addr: Starting address to display at start of line
  95  *    data: pointer to data buffer
  96  *    width: data value width.  May be 1, 2, or 4.
  97  *    count: number of values to display
  98  *    linelen: Number of values to print per line; specify 0 for default length
  99  */
 100 #define MAX_LINE_LENGTH_BYTES (64)
 101 #define DEFAULT_LINE_LENGTH_BYTES (16)
 102 int print_buffer (ulong addr, void* data, uint width, uint count, uint linelen)
 103 {
 104         /* linebuf as a union causes proper alignment */
 105         union linebuf {
 106                 uint32_t ui[MAX_LINE_LENGTH_BYTES/sizeof(uint32_t) + 1];
 107                 uint16_t us[MAX_LINE_LENGTH_BYTES/sizeof(uint16_t) + 1];
 108                 uint8_t  uc[MAX_LINE_LENGTH_BYTES/sizeof(uint8_t) + 1];
 109         } lb;
 110         int i;
 111
 112         if (linelen*width > MAX_LINE_LENGTH_BYTES)
 113                 linelen = MAX_LINE_LENGTH_BYTES / width;
 114         if (linelen < 1)
 115                 linelen = DEFAULT_LINE_LENGTH_BYTES / width;
 116
 117         while (count) {
 118                 printf("%08lx:", addr);
 119
 120                 /* check for overflow condition */
 121                 if (count < linelen)
 122                         linelen = count;
 123
 124                 /* Copy from memory into linebuf and print hex values */
 125                 for (i = 0; i < linelen; i++) {
 126                         uint32_t x;
 127                         if (width == 4)
 128                                 x = lb.ui[i] = *(volatile uint32_t *)data;
 129                         else if (width == 2)
 130                                 x = lb.us[i] = *(volatile uint16_t *)data;
 131                         else
 132                                 x = lb.uc[i] = *(volatile uint8_t *)data;
 133                         printf(" %0*x", width * 2, x);
 134                         data += width;
 135                 }
 136
 137                 /* Print data in ASCII characters */
 138                 for (i = 0; i < linelen * width; i++) {
 139                         if (!isprint(lb.uc[i]) || lb.uc[i] >= 0x80)
 140                                 lb.uc[i] = '.';
 141                 }
 142                 lb.uc[i] = '\0';
 143                 printf("    %s\n", lb.uc);
 144
 145                 /* update references */
 146                 addr += linelen * width;
 147                 count -= linelen;
 148
 149                 if (ctrlc())
 150                         return -1;
 151         }
 152
 153         return 0;
 154 }