lib_generic/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 kB", "xxx.y kB", "xxx MB" or "xxx.y MB" as needed;
  43  * allow for optional trailing string (like "\n")
  44  */
  45 void print_size (ulong size, const char *s)
  46 {
  47         ulong m, n;
  48         ulong d = 1 << 20;              /* 1 MB */
  49         char  c = 'M';
  50
  51         if (size < d) {                 /* print in kB */
  52                 c = 'k';
  53                 d = 1 << 10;
  54         }
  55
  56         n = size / d;
  57
  58         m = (10 * (size - (n * d)) + (d / 2) ) / d;
  59
  60         if (m >= 10) {
  61                 m -= 10;
  62                 n += 1;
  63         }
  64
  65         printf ("%2ld", n);
  66         if (m) {
  67                 printf (".%ld", m);
  68         }
  69         printf (" %cB%s", c, s);
  70 }
  71
  72 /*
  73  * Print data buffer in hex and ascii form to the terminal.
  74  *
  75  * data reads are buffered so that each memory address is only read once.
  76  * Useful when displaying the contents of volatile registers.
  77  *
  78  * parameters:
  79  *    addr: Starting address to display at start of line
  80  *    data: pointer to data buffer
  81  *    width: data value width.  May be 1, 2, or 4.
  82  *    count: number of values to display
  83  *    linelen: Number of values to print per line; specify 0 for default length
  84  */
  85 #define MAX_LINE_LENGTH_BYTES (64)
  86 #define DEFAULT_LINE_LENGTH_BYTES (16)
  87 int print_buffer (ulong addr, void* data, uint width, uint count, uint linelen)
  88 {
  89         uint8_t linebuf[MAX_LINE_LENGTH_BYTES];
  90         uint32_t *uip = (void*)linebuf;
  91         uint16_t *usp = (void*)linebuf;
  92         uint8_t *ucp = (void*)linebuf;
  93         int i;
  94
  95         if (linelen*width > MAX_LINE_LENGTH_BYTES)
  96                 linelen = MAX_LINE_LENGTH_BYTES / width;
  97         if (linelen < 1)
  98                 linelen = DEFAULT_LINE_LENGTH_BYTES / width;
  99
 100         while (count) {
 101                 printf("%08lx:", addr);
 102
 103                 /* check for overflow condition */
 104                 if (count < linelen)
 105                         linelen = count;
 106
 107                 /* Copy from memory into linebuf and print hex values */
 108                 for (i = 0; i < linelen; i++) {
 109                         if (width == 4) {
 110                                 uip[i] = *(volatile uint32_t *)data;
 111                                 printf(" %08x", uip[i]);
 112                         } else if (width == 2) {
 113                                 usp[i] = *(volatile uint16_t *)data;
 114                                 printf(" %04x", usp[i]);
 115                         } else {
 116                                 ucp[i] = *(volatile uint8_t *)data;
 117                                 printf(" %02x", ucp[i]);
 118                         }
 119                         data += width;
 120                 }
 121
 122                 /* Print data in ASCII characters */
 123                 puts("    ");
 124                 for (i = 0; i < linelen * width; i++)
 125                         putc(isprint(ucp[i]) && (ucp[i] < 0x80) ? ucp[i] : '.');
 126                 putc ('\n');
 127
 128                 /* update references */
 129                 addr += linelen * width;
 130                 count -= linelen;
 131
 132                 if (ctrlc())
 133                         return -1;
 134         }
 135
 136         return 0;
 137 }