lib/display_options.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <config.h>
   9 #include <common.h>
  10 #include <version.h>
  11 #include <linux/ctype.h>
  12 #include <asm/io.h>
  13
  14 int display_options (void)
  15 {
  16 #if defined(BUILD_TAG)
  17         printf ("\n\n%s, Build: %s\n\n", version_string, BUILD_TAG);
  18 #else
  19         printf ("\n\n%s\n\n", version_string);
  20 #endif
  21         return 0;
  22 }
  23
  24 /*
  25  * print sizes as "xxx KiB", "xxx.y KiB", "xxx MiB", "xxx.y MiB",
  26  * xxx GiB, xxx.y GiB, etc as needed; allow for optional trailing string
  27  * (like "\n")
  28  */
  29 void print_size(unsigned long long size, const char *s)
  30 {
  31         unsigned long m = 0, n;
  32         unsigned long long f;
  33         static const char names[] = {'E', 'P', 'T', 'G', 'M', 'K'};
  34         unsigned long d = 10 * ARRAY_SIZE(names);
  35         char c = 0;
  36         unsigned int i;
  37
  38         for (i = 0; i < ARRAY_SIZE(names); i++, d -= 10) {
  39                 if (size >> d) {
  40                         c = names[i];
  41                         break;
  42                 }
  43         }
  44
  45         if (!c) {
  46                 printf("%llu Bytes%s", size, s);
  47                 return;
  48         }
  49
  50         n = size >> d;
  51         f = size & ((1ULL << d) - 1);
  52
  53         /* If there's a remainder, deal with it */
  54         if (f) {
  55                 m = (10ULL * f + (1ULL << (d - 1))) >> d;
  56
  57                 if (m >= 10) {
  58                         m -= 10;
  59                         n += 1;
  60                 }
  61         }
  62
  63         printf ("%lu", n);
  64         if (m) {
  65                 printf (".%ld", m);
  66         }
  67         printf (" %ciB%s", c, s);
  68 }
  69
  70 /*
  71  * Print data buffer in hex and ascii form to the terminal.
  72  *
  73  * data reads are buffered so that each memory address is only read once.
  74  * Useful when displaying the contents of volatile registers.
  75  *
  76  * parameters:
  77  *    addr: Starting address to display at start of line
  78  *    data: pointer to data buffer
  79  *    width: data value width.  May be 1, 2, or 4.
  80  *    count: number of values to display
  81  *    linelen: Number of values to print per line; specify 0 for default length
  82  */
  83 #define MAX_LINE_LENGTH_BYTES (64)
  84 #define DEFAULT_LINE_LENGTH_BYTES (16)
  85 int print_buffer(ulong addr, const void *data, uint width, uint count,
  86                  uint linelen)
  87 {
  88         /* linebuf as a union causes proper alignment */
  89         union linebuf {
  90 #ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
  91                 uint64_t uq[MAX_LINE_LENGTH_BYTES/sizeof(uint64_t) + 1];
  92 #endif
  93                 uint32_t ui[MAX_LINE_LENGTH_BYTES/sizeof(uint32_t) + 1];
  94                 uint16_t us[MAX_LINE_LENGTH_BYTES/sizeof(uint16_t) + 1];
  95                 uint8_t  uc[MAX_LINE_LENGTH_BYTES/sizeof(uint8_t) + 1];
  96         } lb;
  97         int i;
  98 #ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
  99         uint64_t x;
 100 #else
 101         uint32_t x;
 102 #endif
 103
 104         if (linelen*width > MAX_LINE_LENGTH_BYTES)
 105                 linelen = MAX_LINE_LENGTH_BYTES / width;
 106         if (linelen < 1)
 107                 linelen = DEFAULT_LINE_LENGTH_BYTES / width;
 108
 109         while (count) {
 110                 uint thislinelen = linelen;
 111                 printf("%08lx:", addr);
 112
 113                 /* check for overflow condition */
 114                 if (count < thislinelen)
 115                         thislinelen = count;
 116
 117                 /* Copy from memory into linebuf and print hex values */
 118                 for (i = 0; i < thislinelen; i++) {
 119                         if (width == 4)
 120                                 x = lb.ui[i] = *(volatile uint32_t *)data;
 121 #ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
 122                         else if (width == 8)
 123                                 x = lb.uq[i] = *(volatile uint64_t *)data;
 124 #endif
 125                         else if (width == 2)
 126                                 x = lb.us[i] = *(volatile uint16_t *)data;
 127                         else
 128                                 x = lb.uc[i] = *(volatile uint8_t *)data;
 129 #ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
 130                         printf(" %0*llx", width * 2, x);
 131 #else
 132                         printf(" %0*x", width * 2, x);
 133 #endif
 134                         data += width;
 135                 }
 136
 137                 while (thislinelen < linelen) {
 138                         /* fill line with whitespace for nice ASCII print */
 139                         for (i=0; i<width*2+1; i++)
 140                                 puts(" ");
 141                         linelen--;
 142                 }
 143
 144                 /* Print data in ASCII characters */
 145                 for (i = 0; i < thislinelen * width; i++) {
 146                         if (!isprint(lb.uc[i]) || lb.uc[i] >= 0x80)
 147                                 lb.uc[i] = '.';
 148                 }
 149                 lb.uc[i] = '\0';
 150                 printf("    %s\n", lb.uc);
 151
 152                 /* update references */
 153                 addr += thislinelen * width;
 154                 count -= thislinelen;
 155
 156                 if (ctrlc())
 157                         return -1;
 158         }
 159
 160         return 0;
 161 }