1 /*
2  *  drivers/mtd/onenand/onenand_uboot.c
3  *
4  *  Copyright (C) 2005-2008 Samsung Electronics
5  *  Kyungmin Park <kyungmin.park@samsung.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 /*
13  * OneNAND initialization at U-Boot
14  */
15 
16 #include <common.h>
17 #include <linux/compat.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/onenand.h>
20 
21 struct mtd_info onenand_mtd;
22 struct onenand_chip onenand_chip;
23 static __attribute__((unused)) char dev_name[] = "onenand0";
24 
25 void onenand_init(void)
26 {
27 	int err = 0;
28 	memset(&onenand_mtd, 0, sizeof(struct mtd_info));
29 	memset(&onenand_chip, 0, sizeof(struct onenand_chip));
30 
31 	onenand_mtd.priv = &onenand_chip;
32 
33 #ifdef CONFIG_USE_ONENAND_BOARD_INIT
34 	/* It's used for some board init required */
35 	err = onenand_board_init(&onenand_mtd);
36 #else
37 	onenand_chip.base = (void *) CONFIG_SYS_ONENAND_BASE;
38 #endif
39 
40 	if (!err && !(onenand_scan(&onenand_mtd, 1))) {
41 
42 		if (onenand_chip.device_id & DEVICE_IS_FLEXONENAND)
43 			puts("Flex-");
44 		puts("OneNAND: ");
45 
46 #ifdef CONFIG_MTD_DEVICE
47 		/*
48 		 * Add MTD device so that we can reference it later
49 		 * via the mtdcore infrastructure (e.g. ubi).
50 		 */
51 		onenand_mtd.name = dev_name;
52 		add_mtd_device(&onenand_mtd);
53 #endif
54 	}
55 	print_size(onenand_chip.chipsize, "\n");
56 }
57