157 lines
6.4 KiB
C
157 lines
6.4 KiB
C
/*
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* (C) Copyright 2000
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* Murray Jensen, CSIRO-MIT, <Murray.Jensen@csiro.au>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*************** DEFINES for Intel StrataFlash FLASH chip ********************/
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/* Commands */
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#define ISF_CMD_RST 0xFF /* reset flash */
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#define ISF_CMD_RD_ID 0x90 /* read the id and lock bits */
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#define ISF_CMD_RD_QUERY 0x98 /* read device capabilities */
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#define ISF_CMD_RD_STAT 0x70 /* read the status register */
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#define ISF_CMD_CLR_STAT 0x50 /* clear the staus register */
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#define ISF_CMD_WR_BUF 0xE8 /* clear the staus register */
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#define ISF_CMD_PROG 0x40 /* program word command */
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#define ISF_CMD_ERASE1 0x20 /* 1st word for block erase */
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#define ISF_CMD_ERASE2 0xD0 /* 2nd word for block erase */
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#define ISF_CMD_ERASE_SUSP 0xB0 /* suspend block erase */
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#define ISF_CMD_LOCK 0x60 /* 1st word for all lock cmds */
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#define ISF_CMD_SET_LOCK_BLK 0x01 /* 2nd wrd set block lock bit */
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#define ISF_CMD_SET_LOCK_MSTR 0xF1 /* 2nd wrd set master lck bit */
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#define ISF_CMD_CLR_LOCK_BLK 0xD0 /* 2nd wrd clear blk lck bit */
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/* status register bits */
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#define ISF_STAT_DPS 0x02 /* Device Protect Status */
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#define ISF_STAT_VPPS 0x08 /* VPP Status */
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#define ISF_STAT_PSLBS 0x10 /* Program+Set Lock Bit Stat */
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#define ISF_STAT_ECLBS 0x20 /* Erase+Clr Lock Bit Stat */
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#define ISF_STAT_ESS 0x40 /* Erase Suspend Status */
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#define ISF_STAT_RDY 0x80 /* WSM Mach Status, 1=rdy */
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#define ISF_STAT_ERR (ISF_STAT_VPPS | ISF_STAT_DPS | \
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ISF_STAT_ECLBS | ISF_STAT_PSLBS)
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/* register addresses, valid only following an ISF_CMD_RD_ID command */
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#define ISF_REG_MAN_CODE 0x00 /* manufacturer code */
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#define ISF_REG_DEV_CODE 0x01 /* device code */
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#define ISF_REG_BLK_LCK 0x02 /* block lock configuration */
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#define ISF_REG_MST_LCK 0x03 /* master lock configuration */
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/********************** DEFINES for Hymod Flash ******************************/
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/*
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* this code requires that the flash on any Hymod board appear as a bank
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* of two (identical) 16bit Intel StrataFlash chips with 64Kword erase
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* sectors (or blocks), running in x16 bit mode and connected side-by-side
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* to make a 32-bit wide bus.
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*/
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typedef unsigned long bank_word_t;
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typedef bank_word_t bank_blk_t[64 * 1024];
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#define BANK_FILL_WORD(b) (((bank_word_t)(b) << 16) | (bank_word_t)(b))
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#ifdef EXAMPLE
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/* theoretically the following examples should also work */
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/* one flash chip in x8 mode with 128Kword sectors and 8bit bus */
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typedef unsigned char bank_word_t;
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typedef bank_word_t bank_blk_t[128 * 1024];
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#define BANK_FILL_WORD(b) ((bank_word_t)(b))
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/* four flash chips in x16 mode with 32Kword sectors and 64bit bus */
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typedef unsigned long long bank_word_t;
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typedef bank_word_t bank_blk_t[32 * 1024];
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#define BANK_FILL_WORD(b) ( \
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((bank_word_t)(b) << 48) \
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((bank_word_t)(b) << 32) \
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((bank_word_t)(b) << 16) \
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((bank_word_t)(b) << 0) \
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)
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#endif /* EXAMPLE */
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/* the sizes of these two types should probably be the same */
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typedef bank_word_t *bank_addr_t;
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typedef unsigned long bank_size_t;
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/* align bank addresses and sizes to bank word boundaries */
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#define BANK_ADDR_WORD_ALIGN(a) ((bank_addr_t)((bank_size_t)(a) \
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& ~(sizeof (bank_word_t) - 1)))
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#define BANK_SIZE_WORD_ALIGN(s) (((bank_size_t)(s) + sizeof (bank_word_t) - 1) \
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& ~(sizeof (bank_word_t) - 1))
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/* align bank addresses and sizes to bank block boundaries */
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#define BANK_ADDR_BLK_ALIGN(a) ((bank_addr_t)((bank_size_t)(a) \
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& ~(sizeof (bank_blk_t) - 1)))
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#define BANK_SIZE_BLK_ALIGN(s) (((bank_size_t)(s) + sizeof (bank_blk_t) - 1) \
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& ~(sizeof (bank_blk_t) - 1))
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/* add an offset to a bank address */
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#define BANK_ADDR_OFFSET(a, o) ((bank_addr_t)((bank_size_t)(a) + \
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(bank_size_t)(o)))
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/* adjust a bank address to start of next word, block or bank */
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#define BANK_ADDR_NEXT_WORD(a) BANK_ADDR_OFFSET(BANK_ADDR_WORD_ALIGN(a), \
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sizeof (bank_word_t))
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#define BANK_ADDR_NEXT_BLK(a) BANK_ADDR_OFFSET(BANK_ADDR_BLK_ALIGN(a), \
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sizeof (bank_blk_t))
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/* get bank address of register r given a bank base address a and block num b */
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#define BANK_ADDR_REG(a, b, r) BANK_ADDR_OFFSET(BANK_ADDR_OFFSET((a), \
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(bank_size_t)(b) * sizeof (bank_blk_t)), \
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(bank_size_t)(r) * sizeof (bank_word_t))
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/* make a bank word value for each StrataFlash value */
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/* Commands */
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#define BANK_CMD_RST BANK_FILL_WORD(ISF_CMD_RST)
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#define BANK_CMD_RD_ID BANK_FILL_WORD(ISF_CMD_RD_ID)
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#define BANK_CMD_RD_STAT BANK_FILL_WORD(ISF_CMD_RD_STAT)
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#define BANK_CMD_CLR_STAT BANK_FILL_WORD(ISF_CMD_CLR_STAT)
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#define BANK_CMD_ERASE1 BANK_FILL_WORD(ISF_CMD_ERASE1)
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#define BANK_CMD_ERASE2 BANK_FILL_WORD(ISF_CMD_ERASE2)
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#define BANK_CMD_PROG BANK_FILL_WORD(ISF_CMD_PROG)
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#define BANK_CMD_LOCK BANK_FILL_WORD(ISF_CMD_LOCK)
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#define BANK_CMD_SET_LOCK_BLK BANK_FILL_WORD(ISF_CMD_SET_LOCK_BLK)
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#define BANK_CMD_SET_LOCK_MSTR BANK_FILL_WORD(ISF_CMD_SET_LOCK_MSTR)
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#define BANK_CMD_CLR_LOCK_BLK BANK_FILL_WORD(ISF_CMD_CLR_LOCK_BLK)
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/* status register bits */
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#define BANK_STAT_DPS BANK_FILL_WORD(ISF_STAT_DPS)
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#define BANK_STAT_PSS BANK_FILL_WORD(ISF_STAT_PSS)
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#define BANK_STAT_VPPS BANK_FILL_WORD(ISF_STAT_VPPS)
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#define BANK_STAT_PSLBS BANK_FILL_WORD(ISF_STAT_PSLBS)
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#define BANK_STAT_ECLBS BANK_FILL_WORD(ISF_STAT_ECLBS)
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#define BANK_STAT_ESS BANK_FILL_WORD(ISF_STAT_ESS)
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#define BANK_STAT_RDY BANK_FILL_WORD(ISF_STAT_RDY)
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#define BANK_STAT_ERR BANK_FILL_WORD(ISF_STAT_ERR)
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/* make a bank register address for each StrataFlash register address */
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#define BANK_REG_MAN_CODE(a) BANK_ADDR_REG((a), 0, ISF_REG_MAN_CODE)
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#define BANK_REG_DEV_CODE(a) BANK_ADDR_REG((a), 0, ISF_REG_DEV_CODE)
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#define BANK_REG_BLK_LCK(a, b) BANK_ADDR_REG((a), (b), ISF_REG_BLK_LCK)
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#define BANK_REG_MST_LCK(a) BANK_ADDR_REG((a), 0, ISF_REG_MST_LCK)
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