coreboot-kgpe-d16/payloads/coreinfo/nvram_module.c

/*
 * This file is part of the coreinfo project.
 *
 * Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc.
 */

#include "coreinfo.h"

#if IS_ENABLED(CONFIG_MODULE_NVRAM)

/**
 * Dump 256 bytes of NVRAM.
 */
static void dump_nvram(WINDOW *win, int row, int col)
{
	int i, x = 0, y = 0;

	/* Print vertical and horizontal index numbers. */
	for (i = 0; i < 16; i++) {
		mvwprintw(win, ((i < 8) ? 4 : 5) + i, 1, "%2.2X ", i);
		mvwprintw(win, 2, 4 + (i * 3), "%2.2X ", i);
	}

	/* Print vertical and horizontal line. */
	for (i = 0; i < 18; i++)
		mvwaddch(win, 3 + i, 3, ACS_VLINE);
	for (i = 0; i < 48; i++)
		mvwaddch(win, 3, 3 + i, (i == 0) ? ACS_ULCORNER : ACS_HLINE);

	/* Dump NVRAM contents. */
	for (i = 1; i < 257; i++) {
		mvwprintw(win, row + y, col + x, "%02x ", nvram_read(i - 1));
		x += 3;
		if (i % 16 == 0) {
			y++;	/* Start a newline after 16 bytes. */
			x = 0;
		}
		if (i % 128 == 0) {
			y++;	/* Add an empty line after 128 bytes. */
			x = 0;
		}
	}
}

static int nvram_module_redraw(WINDOW *win)
{
	print_module_title(win, "NVRAM Dump");
	dump_nvram(win, 4, 4);
	return 0;
}

static int nvram_module_init(void)
{
	return 0;
}

struct coreinfo_module nvram_module = {
	.name = "NVRAM",
	.init = nvram_module_init,
	.redraw = nvram_module_redraw,
};

#else

struct coreinfo_module nvram_module = {
};

#endif