1 /*
2  * Copyright 2008 Extreme Engineering Solutions, Inc.
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 
23 #include <common.h>
24 #include <asm/mmu.h>
25 #ifdef CONFIG_PCA953X
26 #include <pca953x.h>
27 
28 /*
29  * Determine if a board's flashes are write protected
30  */
31 int board_flash_wp_on(void)
32 {
33 	if (pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
34 			CONFIG_SYS_PCA953X_NVM_WP)
35 		return 1;
36 
37 	return 0;
38 }
39 #endif
40 
41 /*
42  * Return a board's derivative model number.  For example:
43  * return 2 for the XPedite5372 and return 1 for the XPedite5201.
44  */
45 uint get_board_derivative(void)
46 {
47 #if defined(CONFIG_MPC85xx)
48        volatile ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
49 #elif defined(CONFIG_MPC86xx)
50        volatile immap_t *immap = (immap_t *)CONFIG_SYS_CCSRBAR;
51        volatile ccsr_gur_t *gur = &immap->im_gur;
52 #endif
53 
54        /*
55 	* The top 4 lines of the local bus address are pulled low/high and
56 	* can be read to determine the least significant digit of a board's
57 	* model number.
58 	*/
59        return gur->gpporcr >> 28;
60 }
61