arch/arm/mach-bcmring/include/mach/reg_nand.h

   1 /*****************************************************************************
   2 * Copyright 2001 - 2008 Broadcom Corporation.  All rights reserved.
   3 *
   4 * Unless you and Broadcom execute a separate written software license
   5 * agreement governing use of this software, this software is licensed to you
   6 * under the terms of the GNU General Public License version 2, available at
   7 * http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
   8 *
   9 * Notwithstanding the above, under no circumstances may you combine this
  10 * software in any way with any other Broadcom software provided under a
  11 * license other than the GPL, without Broadcom's express prior written
  12 * consent.
  13 *****************************************************************************/
  14
  15 /*
  16 *
  17 *****************************************************************************
  18 *
  19 *  REG_NAND.h
  20 *
  21 *  PURPOSE:
  22 *
  23 *     This file contains definitions for the nand registers:
  24 *
  25 *  NOTES:
  26 *
  27 *****************************************************************************/
  28
  29 #if !defined(__ASM_ARCH_REG_NAND_H)
  30 #define __ASM_ARCH_REG_NAND_H
  31
  32 /* ---- Include Files ---------------------------------------------------- */
  33 #include <csp/reg.h>
  34 #include <mach/reg_umi.h>
  35
  36 /* ---- Constants and Types ---------------------------------------------- */
  37
  38 #define HW_NAND_BASE       MM_IO_BASE_NAND      /* NAND Flash */
  39
  40 /* DMA accesses by the bootstrap need hard nonvirtual addresses */
  41 #define REG_NAND_CMD            __REG16(HW_NAND_BASE + 0)
  42 #define REG_NAND_ADDR           __REG16(HW_NAND_BASE + 4)
  43
  44 #define REG_NAND_PHYS_DATA16   (HW_NAND_BASE + 8)
  45 #define REG_NAND_PHYS_DATA8    (HW_NAND_BASE + 8)
  46 #define REG_NAND_DATA16         __REG16(REG_NAND_PHYS_DATA16)
  47 #define REG_NAND_DATA8          __REG8(REG_NAND_PHYS_DATA8)
  48
  49 /* use appropriate offset to make sure it start at the 1K boundary */
  50 #define REG_NAND_PHYS_DATA_DMA   (HW_NAND_BASE + 0x400)
  51 #define REG_NAND_DATA_DMA         __REG32(REG_NAND_PHYS_DATA_DMA)
  52
  53 /* Linux DMA requires physical address of the data register */
  54 #define REG_NAND_DATA16_PADDR    HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA16)
  55 #define REG_NAND_DATA8_PADDR     HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA8)
  56 #define REG_NAND_DATA_PADDR      HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA_DMA)
  57
  58 #define NAND_BUS_16BIT()        (0)
  59 #define NAND_BUS_8BIT()         (!NAND_BUS_16BIT())
  60
  61 /* Register offsets */
  62 #define REG_NAND_CMD_OFFSET     (0)
  63 #define REG_NAND_ADDR_OFFSET    (4)
  64 #define REG_NAND_DATA8_OFFSET   (8)
  65
  66 #endif