src/console/early_print.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc.
  16  */
  17
  18 #include <console/streams.h>
  19
  20 void console_tx_nibble(unsigned nibble)
  21 {
  22         unsigned char digit;
  23         digit = nibble + '0';
  24         if (digit > '9') {
  25                 digit += 39;
  26         }
  27         console_tx_byte(digit);
  28 }
  29
  30 void console_tx_hex8(unsigned char value)
  31 {
  32         console_tx_nibble((value >>  4U) & 0x0fU);
  33         console_tx_nibble(value & 0x0fU);
  34 }
  35
  36 void console_tx_hex16(unsigned short value)
  37 {
  38         console_tx_nibble((value >> 12U) & 0x0fU);
  39         console_tx_nibble((value >>  8U) & 0x0fU);
  40         console_tx_nibble((value >>  4U) & 0x0fU);
  41         console_tx_nibble(value & 0x0fU);
  42 }
  43
  44 void console_tx_hex32(unsigned int value)
  45 {
  46         console_tx_nibble((value >> 28U) & 0x0fU);
  47         console_tx_nibble((value >> 24U) & 0x0fU);
  48         console_tx_nibble((value >> 20U) & 0x0fU);
  49         console_tx_nibble((value >> 16U) & 0x0fU);
  50         console_tx_nibble((value >> 12U) & 0x0fU);
  51         console_tx_nibble((value >>  8U) & 0x0fU);
  52         console_tx_nibble((value >>  4U) & 0x0fU);
  53         console_tx_nibble(value & 0x0fU);
  54 }
  55
  56 void console_tx_string(const char *str)
  57 {
  58         unsigned char ch;
  59         while((ch = *str++) != '\0') {
  60                 if (ch == '\n')
  61                         console_tx_byte('\r');
  62                 console_tx_byte(ch);
  63         }
  64 }