payloads/coreinfo/nvram_module.c

   1 /*
   2  * This file is part of the coreinfo project.
   3  *
   4  * Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include "coreinfo.h"
  17
  18 #if CONFIG(MODULE_NVRAM)
  19
  20 /**
  21  * Dump 256 bytes of NVRAM.
  22  */
  23 static void dump_nvram(WINDOW *win, int row, int col)
  24 {
  25         int i, x = 0, y = 0;
  26
  27         /* Print vertical and horizontal index numbers. */
  28         for (i = 0; i < 16; i++) {
  29                 mvwprintw(win, ((i < 8) ? 4 : 5) + i, 1, "%2.2X ", i * 0x10);
  30                 mvwprintw(win, 2, 4 + (i * 3), "%2.2X ", i);
  31         }
  32
  33         /* Print vertical and horizontal line. */
  34         for (i = 0; i < 18; i++)
  35                 mvwaddch(win, 3 + i, 3, ACS_VLINE);
  36         for (i = 0; i < 48; i++)
  37                 mvwaddch(win, 3, 3 + i, (i == 0) ? ACS_ULCORNER : ACS_HLINE);
  38
  39         /* Dump NVRAM contents. */
  40         for (i = 1; i < 257; i++) {
  41                 mvwprintw(win, row + y, col + x, "%02x ", nvram_read(i - 1));
  42                 x += 3;
  43                 if (i % 16 == 0) {
  44                         y++;    /* Start a newline after 16 bytes. */
  45                         x = 0;
  46                 }
  47                 if (i % 128 == 0) {
  48                         y++;    /* Add an empty line after 128 bytes. */
  49                         x = 0;
  50                 }
  51         }
  52 }
  53
  54 static int nvram_module_redraw(WINDOW *win)
  55 {
  56         print_module_title(win, "NVRAM Dump");
  57         dump_nvram(win, 4, 4);
  58         return 0;
  59 }
  60
  61 static int nvram_module_init(void)
  62 {
  63         return 0;
  64 }
  65
  66 struct coreinfo_module nvram_module = {
  67         .name = "NVRAM",
  68         .init = nvram_module_init,
  69         .redraw = nvram_module_redraw,
  70 };
  71
  72 #else
  73
  74 struct coreinfo_module nvram_module = {
  75 };
  76
  77 #endif