Primary Bootloader (before u-boot) in sysmoBTSv2
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/*
* nand.h - NAND flash definitions
*
* Copyright (C) 2008 Hugo Villeneuve <hugo@hugovil.com>
*
* Based on TI DaVinci Flash and Boot Utilities, original copyright follows:
* Copyright 2008 Texas Instruments, Inc. <www.ti.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _NAND_H_
#define _NAND_H_
#include "common.h"
#include "davinci.h"
/* Define which blocks are valid for writing UBL data */
#define START_UBL_BLOCK_NUM 1
#define END_UBL_BLOCK_NUM ((nand_get_bytes_per_block() == 16384) ? 32 : 5)
/* Define which blocks are valid for writing U-BOOT data */
/* NUTAQ: Adjust it according to your requirements */
#define START_UBOOT_BLOCK_NUM (END_UBL_BLOCK_NUM + 1)
#define MAX_BLOCK_PER_UBOOT 6
#define END_UBOOT_BLOCK_NUM 31
#define MAX_PAGE_SIZE (2048+64) /* Data bytes + spare area */
/* NAND descriptor expected by RBL when it loads UBL image. */
struct nand_image_descriptor_t {
uint32_t magic;
uint32_t entry_point;
uint32_t size_in_pages;
uint32_t block_num;
uint32_t page_num;
uint32_t load_address; /* Not used by RBL */
};
int nand_init(void);
int nand_erase_all(void);
int nand_read_page(uint32_t block, uint32_t page, uint8_t *dest);
int nand_write_prog(struct nand_image_descriptor_t *im_desc,
const uint8_t *src, size_t size);
/* Copy Application from NAND to RAM */
int nand_copy(uint32_t *jump_entry_point);
int nand_get_pages_per_block(void);
int nand_get_bytes_per_page(void);
int nand_get_bytes_per_block(void);
#endif /* _NAND_H_ */