upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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1235 lines
33 KiB
1235 lines
33 KiB
/*
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* (C) Copyright 2002-2004
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* Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
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*
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* Copyright (C) 2003 Arabella Software Ltd.
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* Yuli Barcohen <yuli@arabellasw.com>
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* Modified to work with AMD flashes
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*
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* Copyright (C) 2004
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* Ed Okerson
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* Modified to work with little-endian systems.
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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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* History
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* 01/20/2004 - combined variants of original driver.
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* 01/22/2004 - Write performance enhancements for parallel chips (Tolunay)
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* 01/23/2004 - Support for x8/x16 chips (Rune Raknerud)
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* 01/27/2004 - Little endian support Ed Okerson
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*
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* Tested Architectures
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* Port Width Chip Width # of banks Flash Chip Board
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* 32 16 1 28F128J3 seranoa/eagle
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* 64 16 1 28F128J3 seranoa/falcon
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*
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*/
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/* The DEBUG define must be before common to enable debugging */
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/* #define DEBUG */
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/byteorder.h>
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#include <linux/byteorder/swab.h>
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#ifdef CFG_FLASH_CFI_DRIVER
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/*
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* This file implements a Common Flash Interface (CFI) driver for U-Boot.
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* The width of the port and the width of the chips are determined at initialization.
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* These widths are used to calculate the address for access CFI data structures.
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* It has been tested on an Intel Strataflash implementation and AMD 29F016D.
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*
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* References
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* JEDEC Standard JESD68 - Common Flash Interface (CFI)
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* JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
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* Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
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* Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
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*
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* TODO
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*
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* Use Primary Extended Query table (PRI) and Alternate Algorithm Query
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* Table (ALT) to determine if protection is available
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*
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* Add support for other command sets Use the PRI and ALT to determine command set
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* Verify erase and program timeouts.
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*/
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#ifndef CFG_FLASH_BANKS_LIST
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#define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE }
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#endif
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#define FLASH_CMD_CFI 0x98
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#define FLASH_CMD_READ_ID 0x90
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#define FLASH_CMD_RESET 0xff
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#define FLASH_CMD_BLOCK_ERASE 0x20
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#define FLASH_CMD_ERASE_CONFIRM 0xD0
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#define FLASH_CMD_WRITE 0x40
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#define FLASH_CMD_PROTECT 0x60
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#define FLASH_CMD_PROTECT_SET 0x01
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#define FLASH_CMD_PROTECT_CLEAR 0xD0
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#define FLASH_CMD_CLEAR_STATUS 0x50
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#define FLASH_CMD_WRITE_TO_BUFFER 0xE8
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#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
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#define FLASH_STATUS_DONE 0x80
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#define FLASH_STATUS_ESS 0x40
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#define FLASH_STATUS_ECLBS 0x20
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#define FLASH_STATUS_PSLBS 0x10
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#define FLASH_STATUS_VPENS 0x08
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#define FLASH_STATUS_PSS 0x04
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#define FLASH_STATUS_DPS 0x02
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#define FLASH_STATUS_R 0x01
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#define FLASH_STATUS_PROTECT 0x01
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#define AMD_CMD_RESET 0xF0
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#define AMD_CMD_WRITE 0xA0
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#define AMD_CMD_ERASE_START 0x80
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#define AMD_CMD_ERASE_SECTOR 0x30
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#define AMD_CMD_UNLOCK_START 0xAA
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#define AMD_CMD_UNLOCK_ACK 0x55
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#define AMD_STATUS_TOGGLE 0x40
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#define AMD_STATUS_ERROR 0x20
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#define AMD_ADDR_ERASE_START 0x555
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#define AMD_ADDR_START 0x555
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#define AMD_ADDR_ACK 0x2AA
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#define FLASH_OFFSET_CFI 0x55
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#define FLASH_OFFSET_CFI_RESP 0x10
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#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
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#define FLASH_OFFSET_WTOUT 0x1F
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#define FLASH_OFFSET_WBTOUT 0x20
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#define FLASH_OFFSET_ETOUT 0x21
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#define FLASH_OFFSET_CETOUT 0x22
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#define FLASH_OFFSET_WMAX_TOUT 0x23
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#define FLASH_OFFSET_WBMAX_TOUT 0x24
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#define FLASH_OFFSET_EMAX_TOUT 0x25
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#define FLASH_OFFSET_CEMAX_TOUT 0x26
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#define FLASH_OFFSET_SIZE 0x27
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#define FLASH_OFFSET_INTERFACE 0x28
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#define FLASH_OFFSET_BUFFER_SIZE 0x2A
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#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
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#define FLASH_OFFSET_ERASE_REGIONS 0x2D
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#define FLASH_OFFSET_PROTECT 0x02
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#define FLASH_OFFSET_USER_PROTECTION 0x85
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#define FLASH_OFFSET_INTEL_PROTECTION 0x81
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#define FLASH_MAN_CFI 0x01000000
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#define CFI_CMDSET_NONE 0
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#define CFI_CMDSET_INTEL_EXTENDED 1
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#define CFI_CMDSET_AMD_STANDARD 2
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#define CFI_CMDSET_INTEL_STANDARD 3
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#define CFI_CMDSET_AMD_EXTENDED 4
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#define CFI_CMDSET_MITSU_STANDARD 256
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#define CFI_CMDSET_MITSU_EXTENDED 257
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#define CFI_CMDSET_SST 258
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typedef union {
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unsigned char c;
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unsigned short w;
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unsigned long l;
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unsigned long long ll;
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} cfiword_t;
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typedef union {
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volatile unsigned char *cp;
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volatile unsigned short *wp;
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volatile unsigned long *lp;
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volatile unsigned long long *llp;
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} cfiptr_t;
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#define NUM_ERASE_REGIONS 4
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static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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/*-----------------------------------------------------------------------
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* Functions
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*/
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typedef unsigned long flash_sect_t;
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static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c);
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static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf);
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static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
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static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect);
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static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
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static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
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static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
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static int flash_detect_cfi (flash_info_t * info);
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static ulong flash_get_size (ulong base, int banknum);
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static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword);
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static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
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ulong tout, char *prompt);
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#ifdef CFG_FLASH_USE_BUFFER_WRITE
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static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int len);
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#endif
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/*-----------------------------------------------------------------------
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* create an address based on the offset and the port width
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*/
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inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset)
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{
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return ((uchar *) (info->start[sect] + (offset * info->portwidth)));
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}
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#ifdef DEBUG
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/*-----------------------------------------------------------------------
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* Debug support
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*/
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void print_longlong (char *str, unsigned long long data)
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{
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int i;
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char *cp;
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cp = (unsigned char *) &data;
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for (i = 0; i < 8; i++)
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sprintf (&str[i * 2], "%2.2x", *cp++);
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}
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static void flash_printqry (flash_info_t * info, flash_sect_t sect)
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{
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cfiptr_t cptr;
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int x, y;
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for (x = 0; x < 0x40; x += 16 / info->portwidth) {
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cptr.cp =
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flash_make_addr (info, sect,
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x + FLASH_OFFSET_CFI_RESP);
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debug ("%p : ", cptr.cp);
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for (y = 0; y < 16; y++) {
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debug ("%2.2x ", cptr.cp[y]);
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}
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debug (" ");
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for (y = 0; y < 16; y++) {
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if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) {
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debug ("%c", cptr.cp[y]);
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} else {
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debug (".");
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}
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}
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debug ("\n");
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}
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}
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#endif
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/*-----------------------------------------------------------------------
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* read a character at a port width address
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*/
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inline uchar flash_read_uchar (flash_info_t * info, uint offset)
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{
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uchar *cp;
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cp = flash_make_addr (info, 0, offset);
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#if defined(__LITTLE_ENDIAN)
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return (cp[0]);
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#else
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return (cp[info->portwidth - 1]);
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#endif
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}
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/*-----------------------------------------------------------------------
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* read a short word by swapping for ppc format.
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*/
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ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset)
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{
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uchar *addr;
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ushort retval;
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#ifdef DEBUG
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int x;
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#endif
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addr = flash_make_addr (info, sect, offset);
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#ifdef DEBUG
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debug ("ushort addr is at %p info->portwidth = %d\n", addr,
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info->portwidth);
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for (x = 0; x < 2 * info->portwidth; x++) {
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debug ("addr[%x] = 0x%x\n", x, addr[x]);
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}
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#endif
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#if defined(__LITTLE_ENDIAN)
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retval = ((addr[(info->portwidth)] << 8) | addr[0]);
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#else
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retval = ((addr[(2 * info->portwidth) - 1] << 8) |
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addr[info->portwidth - 1]);
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#endif
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debug ("retval = 0x%x\n", retval);
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return retval;
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}
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/*-----------------------------------------------------------------------
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* read a long word by picking the least significant byte of each maiximum
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* port size word. Swap for ppc format.
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*/
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ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
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{
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uchar *addr;
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ulong retval;
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#ifdef DEBUG
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int x;
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#endif
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addr = flash_make_addr (info, sect, offset);
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#ifdef DEBUG
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debug ("long addr is at %p info->portwidth = %d\n", addr,
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info->portwidth);
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for (x = 0; x < 4 * info->portwidth; x++) {
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debug ("addr[%x] = 0x%x\n", x, addr[x]);
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}
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#endif
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#if defined(__LITTLE_ENDIAN)
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retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) |
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(addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8);
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#else
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retval = (addr[(2 * info->portwidth) - 1] << 24) |
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(addr[(info->portwidth) - 1] << 16) |
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(addr[(4 * info->portwidth) - 1] << 8) |
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addr[(3 * info->portwidth) - 1];
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#endif
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return retval;
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}
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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unsigned long size = 0;
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int i;
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/* Init: no FLASHes known */
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for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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size += flash_info[i].size = flash_get_size (bank_base[i], i);
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if (flash_info[i].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
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i, flash_info[i].size, flash_info[i].size << 20);
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}
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}
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/* Monitor protection ON by default */
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#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
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flash_protect (FLAG_PROTECT_SET,
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CFG_MONITOR_BASE,
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CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
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&flash_info[0]);
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#endif
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return (size);
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}
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|
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/*-----------------------------------------------------------------------
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*/
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int flash_erase (flash_info_t * info, int s_first, int s_last)
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{
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int rcode = 0;
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int prot;
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flash_sect_t sect;
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if (info->flash_id != FLASH_MAN_CFI) {
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puts ("Can't erase unknown flash type - aborted\n");
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return 1;
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}
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if ((s_first < 0) || (s_first > s_last)) {
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puts ("- no sectors to erase\n");
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return 1;
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}
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prot = 0;
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for (sect = s_first; sect <= s_last; ++sect) {
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if (info->protect[sect]) {
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prot++;
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}
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}
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if (prot) {
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printf ("- Warning: %d protected sectors will not be erased!\n", prot);
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} else {
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putc ('\n');
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}
|
|
|
|
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for (sect = s_first; sect <= s_last; sect++) {
|
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if (info->protect[sect] == 0) { /* not protected */
|
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switch (info->vendor) {
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case CFI_CMDSET_INTEL_STANDARD:
|
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case CFI_CMDSET_INTEL_EXTENDED:
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flash_write_cmd (info, sect, 0, FLASH_CMD_CLEAR_STATUS);
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flash_write_cmd (info, sect, 0, FLASH_CMD_BLOCK_ERASE);
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flash_write_cmd (info, sect, 0, FLASH_CMD_ERASE_CONFIRM);
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break;
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case CFI_CMDSET_AMD_STANDARD:
|
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case CFI_CMDSET_AMD_EXTENDED:
|
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flash_unlock_seq (info, sect);
|
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flash_write_cmd (info, sect, AMD_ADDR_ERASE_START,
|
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AMD_CMD_ERASE_START);
|
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flash_unlock_seq (info, sect);
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flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR);
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break;
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default:
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debug ("Unkown flash vendor %d\n",
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info->vendor);
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break;
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|
}
|
|
|
|
if (flash_full_status_check
|
|
(info, sect, info->erase_blk_tout, "erase")) {
|
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rcode = 1;
|
|
} else
|
|
putc ('.');
|
|
}
|
|
}
|
|
puts (" done\n");
|
|
return rcode;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t * info)
|
|
{
|
|
int i;
|
|
|
|
if (info->flash_id != FLASH_MAN_CFI) {
|
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puts ("missing or unknown FLASH type\n");
|
|
return;
|
|
}
|
|
|
|
printf ("CFI conformant FLASH (%d x %d)",
|
|
(info->portwidth << 3), (info->chipwidth << 3));
|
|
printf (" Size: %ld MB in %d Sectors\n",
|
|
info->size >> 20, info->sector_count);
|
|
printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n",
|
|
info->erase_blk_tout,
|
|
info->write_tout,
|
|
info->buffer_write_tout,
|
|
info->buffer_size);
|
|
|
|
puts (" Sector Start Addresses:");
|
|
for (i = 0; i < info->sector_count; ++i) {
|
|
#ifdef CFG_FLASH_EMPTY_INFO
|
|
int k;
|
|
int size;
|
|
int erased;
|
|
volatile unsigned long *flash;
|
|
|
|
/*
|
|
* Check if whole sector is erased
|
|
*/
|
|
if (i != (info->sector_count - 1))
|
|
size = info->start[i + 1] - info->start[i];
|
|
else
|
|
size = info->start[0] + info->size - info->start[i];
|
|
erased = 1;
|
|
flash = (volatile unsigned long *) info->start[i];
|
|
size = size >> 2; /* divide by 4 for longword access */
|
|
for (k = 0; k < size; k++) {
|
|
if (*flash++ != 0xffffffff) {
|
|
erased = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((i % 5) == 0)
|
|
printf ("\n");
|
|
/* print empty and read-only info */
|
|
printf (" %08lX%s%s",
|
|
info->start[i],
|
|
erased ? " E" : " ",
|
|
info->protect[i] ? "RO " : " ");
|
|
#else
|
|
if ((i % 5) == 0)
|
|
printf ("\n ");
|
|
printf (" %08lX%s",
|
|
info->start[i], info->protect[i] ? " (RO)" : " ");
|
|
#endif
|
|
}
|
|
putc ('\n');
|
|
return;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
|
|
{
|
|
ulong wp;
|
|
ulong cp;
|
|
int aln;
|
|
cfiword_t cword;
|
|
int i, rc;
|
|
|
|
#ifdef CFG_FLASH_USE_BUFFER_WRITE
|
|
int buffered_size;
|
|
#endif
|
|
/* get lower aligned address */
|
|
/* get lower aligned address */
|
|
wp = (addr & ~(info->portwidth - 1));
|
|
|
|
/* handle unaligned start */
|
|
if ((aln = addr - wp) != 0) {
|
|
cword.l = 0;
|
|
cp = wp;
|
|
for (i = 0; i < aln; ++i, ++cp)
|
|
flash_add_byte (info, &cword, (*(uchar *) cp));
|
|
|
|
for (; (i < info->portwidth) && (cnt > 0); i++) {
|
|
flash_add_byte (info, &cword, *src++);
|
|
cnt--;
|
|
cp++;
|
|
}
|
|
for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp)
|
|
flash_add_byte (info, &cword, (*(uchar *) cp));
|
|
if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
|
|
return rc;
|
|
wp = cp;
|
|
}
|
|
|
|
/* handle the aligned part */
|
|
#ifdef CFG_FLASH_USE_BUFFER_WRITE
|
|
buffered_size = (info->portwidth / info->chipwidth);
|
|
buffered_size *= info->buffer_size;
|
|
while (cnt >= info->portwidth) {
|
|
i = buffered_size > cnt ? cnt : buffered_size;
|
|
if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
|
|
return rc;
|
|
wp += i;
|
|
src += i;
|
|
cnt -= i;
|
|
}
|
|
#else
|
|
while (cnt >= info->portwidth) {
|
|
cword.l = 0;
|
|
for (i = 0; i < info->portwidth; i++) {
|
|
flash_add_byte (info, &cword, *src++);
|
|
}
|
|
if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
|
|
return rc;
|
|
wp += info->portwidth;
|
|
cnt -= info->portwidth;
|
|
}
|
|
#endif /* CFG_FLASH_USE_BUFFER_WRITE */
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
cword.l = 0;
|
|
for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
|
|
flash_add_byte (info, &cword, *src++);
|
|
--cnt;
|
|
}
|
|
for (; i < info->portwidth; ++i, ++cp) {
|
|
flash_add_byte (info, &cword, (*(uchar *) cp));
|
|
}
|
|
|
|
return flash_write_cfiword (info, wp, cword);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
#ifdef CFG_FLASH_PROTECTION
|
|
|
|
int flash_real_protect (flash_info_t * info, long sector, int prot)
|
|
{
|
|
int retcode = 0;
|
|
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
|
|
if (prot)
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
|
|
else
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
|
|
|
|
if ((retcode =
|
|
flash_full_status_check (info, sector, info->erase_blk_tout,
|
|
prot ? "protect" : "unprotect")) == 0) {
|
|
|
|
info->protect[sector] = prot;
|
|
/* Intel's unprotect unprotects all locking */
|
|
if (prot == 0) {
|
|
flash_sect_t i;
|
|
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
if (info->protect[i])
|
|
flash_real_protect (info, i, 1);
|
|
}
|
|
}
|
|
}
|
|
return retcode;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* flash_read_user_serial - read the OneTimeProgramming cells
|
|
*/
|
|
void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
|
|
int len)
|
|
{
|
|
uchar *src;
|
|
uchar *dst;
|
|
|
|
dst = buffer;
|
|
src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
|
|
memcpy (dst, src + offset, len);
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
|
|
}
|
|
|
|
/*
|
|
* flash_read_factory_serial - read the device Id from the protection area
|
|
*/
|
|
void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
|
|
int len)
|
|
{
|
|
uchar *src;
|
|
|
|
src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
|
|
memcpy (buffer, src + offset, len);
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
|
|
}
|
|
|
|
#endif /* CFG_FLASH_PROTECTION */
|
|
|
|
/*
|
|
* flash_is_busy - check to see if the flash is busy
|
|
* This routine checks the status of the chip and returns true if the chip is busy
|
|
*/
|
|
static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
|
|
{
|
|
int retval;
|
|
|
|
switch (info->vendor) {
|
|
case CFI_CMDSET_INTEL_STANDARD:
|
|
case CFI_CMDSET_INTEL_EXTENDED:
|
|
retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
|
|
break;
|
|
case CFI_CMDSET_AMD_STANDARD:
|
|
case CFI_CMDSET_AMD_EXTENDED:
|
|
retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
|
|
break;
|
|
default:
|
|
retval = 0;
|
|
}
|
|
debug ("flash_is_busy: %d\n", retval);
|
|
return retval;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* wait for XSR.7 to be set. Time out with an error if it does not.
|
|
* This routine does not set the flash to read-array mode.
|
|
*/
|
|
static int flash_status_check (flash_info_t * info, flash_sect_t sector,
|
|
ulong tout, char *prompt)
|
|
{
|
|
ulong start;
|
|
|
|
/* Wait for command completion */
|
|
start = get_timer (0);
|
|
while (flash_is_busy (info, sector)) {
|
|
if (get_timer (start) > info->erase_blk_tout * CFG_HZ) {
|
|
printf ("Flash %s timeout at address %lx data %lx\n",
|
|
prompt, info->start[sector],
|
|
flash_read_long (info, sector, 0));
|
|
flash_write_cmd (info, sector, 0, info->cmd_reset);
|
|
return ERR_TIMOUT;
|
|
}
|
|
}
|
|
return ERR_OK;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
|
|
* This routine sets the flash to read-array mode.
|
|
*/
|
|
static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
|
|
ulong tout, char *prompt)
|
|
{
|
|
int retcode;
|
|
|
|
retcode = flash_status_check (info, sector, tout, prompt);
|
|
switch (info->vendor) {
|
|
case CFI_CMDSET_INTEL_EXTENDED:
|
|
case CFI_CMDSET_INTEL_STANDARD:
|
|
if ((retcode != ERR_OK)
|
|
&& !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
|
|
retcode = ERR_INVAL;
|
|
printf ("Flash %s error at address %lx\n", prompt,
|
|
info->start[sector]);
|
|
if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
|
|
puts ("Command Sequence Error.\n");
|
|
} else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
|
|
puts ("Block Erase Error.\n");
|
|
retcode = ERR_NOT_ERASED;
|
|
} else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
|
|
puts ("Locking Error\n");
|
|
}
|
|
if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
|
|
puts ("Block locked.\n");
|
|
retcode = ERR_PROTECTED;
|
|
}
|
|
if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
|
|
puts ("Vpp Low Error.\n");
|
|
}
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_RESET);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return retcode;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
|
|
{
|
|
#if defined(__LITTLE_ENDIAN)
|
|
unsigned short w;
|
|
unsigned int l;
|
|
unsigned long long ll;
|
|
#endif
|
|
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
cword->c = c;
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
#if defined(__LITTLE_ENDIAN)
|
|
w = c;
|
|
w <<= 8;
|
|
cword->w = (cword->w >> 8) | w;
|
|
#else
|
|
cword->w = (cword->w << 8) | c;
|
|
#endif
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
#if defined(__LITTLE_ENDIAN)
|
|
l = c;
|
|
l <<= 24;
|
|
cword->l = (cword->l >> 8) | l;
|
|
#else
|
|
cword->l = (cword->l << 8) | c;
|
|
#endif
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
#if defined(__LITTLE_ENDIAN)
|
|
ll = c;
|
|
ll <<= 56;
|
|
cword->ll = (cword->ll >> 8) | ll;
|
|
#else
|
|
cword->ll = (cword->ll << 8) | c;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* make a proper sized command based on the port and chip widths
|
|
*/
|
|
static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
|
|
{
|
|
int i;
|
|
|
|
#if defined(__LITTLE_ENDIAN)
|
|
ushort stmpw;
|
|
uint stmpi;
|
|
#endif
|
|
uchar *cp = (uchar *) cmdbuf;
|
|
|
|
for (i = 0; i < info->portwidth; i++)
|
|
*cp++ = ((i + 1) % info->chipwidth) ? '\0' : cmd;
|
|
#if defined(__LITTLE_ENDIAN)
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
stmpw = *(ushort *) cmdbuf;
|
|
*(ushort *) cmdbuf = __swab16 (stmpw);
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
stmpi = *(uint *) cmdbuf;
|
|
*(uint *) cmdbuf = __swab32 (stmpi);
|
|
break;
|
|
default:
|
|
puts ("WARNING: flash_make_cmd: unsuppported LittleEndian mode\n");
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Write a proper sized command to the correct address
|
|
*/
|
|
static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
|
|
{
|
|
|
|
volatile cfiptr_t addr;
|
|
cfiword_t cword;
|
|
|
|
addr.cp = flash_make_addr (info, sect, offset);
|
|
flash_make_cmd (info, cmd, &cword);
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
|
|
cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
*addr.cp = cword.c;
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
|
|
cmd, cword.w,
|
|
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
*addr.wp = cword.w;
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
|
|
cmd, cword.l,
|
|
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
*addr.lp = cword.l;
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
#ifdef DEBUG
|
|
{
|
|
char str[20];
|
|
|
|
print_longlong (str, cword.ll);
|
|
|
|
debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
|
|
addr.llp, cmd, str,
|
|
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
}
|
|
#endif
|
|
*addr.llp = cword.ll;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
|
|
{
|
|
flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START);
|
|
flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
|
|
{
|
|
cfiptr_t cptr;
|
|
cfiword_t cword;
|
|
int retval;
|
|
|
|
cptr.cp = flash_make_addr (info, sect, offset);
|
|
flash_make_cmd (info, cmd, &cword);
|
|
|
|
debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
debug ("is= %x %x\n", cptr.cp[0], cword.c);
|
|
retval = (cptr.cp[0] == cword.c);
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
|
|
retval = (cptr.wp[0] == cword.w);
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
|
|
retval = (cptr.lp[0] == cword.l);
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
#ifdef DEBUG
|
|
{
|
|
char str1[20];
|
|
char str2[20];
|
|
|
|
print_longlong (str1, cptr.llp[0]);
|
|
print_longlong (str2, cword.ll);
|
|
debug ("is= %s %s\n", str1, str2);
|
|
}
|
|
#endif
|
|
retval = (cptr.llp[0] == cword.ll);
|
|
break;
|
|
default:
|
|
retval = 0;
|
|
break;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
|
|
{
|
|
cfiptr_t cptr;
|
|
cfiword_t cword;
|
|
int retval;
|
|
|
|
cptr.cp = flash_make_addr (info, sect, offset);
|
|
flash_make_cmd (info, cmd, &cword);
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
retval = ((cptr.cp[0] & cword.c) == cword.c);
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
retval = ((cptr.wp[0] & cword.w) == cword.w);
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
retval = ((cptr.lp[0] & cword.l) == cword.l);
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
retval = ((cptr.llp[0] & cword.ll) == cword.ll);
|
|
break;
|
|
default:
|
|
retval = 0;
|
|
break;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
|
|
{
|
|
cfiptr_t cptr;
|
|
cfiword_t cword;
|
|
int retval;
|
|
|
|
cptr.cp = flash_make_addr (info, sect, offset);
|
|
flash_make_cmd (info, cmd, &cword);
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c));
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l));
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
retval = ((cptr.llp[0] & cword.ll) !=
|
|
(cptr.llp[0] & cword.ll));
|
|
break;
|
|
default:
|
|
retval = 0;
|
|
break;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* detect if flash is compatible with the Common Flash Interface (CFI)
|
|
* http://www.jedec.org/download/search/jesd68.pdf
|
|
*
|
|
*/
|
|
static int flash_detect_cfi (flash_info_t * info)
|
|
{
|
|
debug ("flash detect cfi\n");
|
|
|
|
for (info->portwidth = FLASH_CFI_8BIT;
|
|
info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
|
|
for (info->chipwidth = FLASH_CFI_BY8;
|
|
info->chipwidth <= info->portwidth;
|
|
info->chipwidth <<= 1) {
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
|
|
flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI);
|
|
if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
|
|
&& flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
|
|
&& flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
|
|
info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
|
|
debug ("device interface is %d\n",
|
|
info->interface);
|
|
debug ("found port %d chip %d ",
|
|
info->portwidth, info->chipwidth);
|
|
debug ("port %d bits chip %d bits\n",
|
|
info->portwidth << CFI_FLASH_SHIFT_WIDTH,
|
|
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
debug ("not found\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The following code cannot be run from FLASH!
|
|
*
|
|
*/
|
|
static ulong flash_get_size (ulong base, int banknum)
|
|
{
|
|
flash_info_t *info = &flash_info[banknum];
|
|
int i, j;
|
|
flash_sect_t sect_cnt;
|
|
unsigned long sector;
|
|
unsigned long tmp;
|
|
int size_ratio;
|
|
uchar num_erase_regions;
|
|
int erase_region_size;
|
|
int erase_region_count;
|
|
|
|
info->start[0] = base;
|
|
|
|
if (flash_detect_cfi (info)) {
|
|
info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR);
|
|
#ifdef DEBUG
|
|
flash_printqry (info, 0);
|
|
#endif
|
|
switch (info->vendor) {
|
|
case CFI_CMDSET_INTEL_STANDARD:
|
|
case CFI_CMDSET_INTEL_EXTENDED:
|
|
default:
|
|
info->cmd_reset = FLASH_CMD_RESET;
|
|
break;
|
|
case CFI_CMDSET_AMD_STANDARD:
|
|
case CFI_CMDSET_AMD_EXTENDED:
|
|
info->cmd_reset = AMD_CMD_RESET;
|
|
break;
|
|
}
|
|
|
|
debug ("manufacturer is %d\n", info->vendor);
|
|
size_ratio = info->portwidth / info->chipwidth;
|
|
/* if the chip is x8/x16 reduce the ratio by half */
|
|
if ((info->interface == FLASH_CFI_X8X16)
|
|
&& (info->chipwidth == FLASH_CFI_BY8)) {
|
|
size_ratio >>= 1;
|
|
}
|
|
num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS);
|
|
debug ("size_ratio %d port %d bits chip %d bits\n",
|
|
size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
|
|
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
|
|
debug ("found %d erase regions\n", num_erase_regions);
|
|
sect_cnt = 0;
|
|
sector = base;
|
|
for (i = 0; i < num_erase_regions; i++) {
|
|
if (i > NUM_ERASE_REGIONS) {
|
|
printf ("%d erase regions found, only %d used\n",
|
|
num_erase_regions, NUM_ERASE_REGIONS);
|
|
break;
|
|
}
|
|
tmp = flash_read_long (info, 0,
|
|
FLASH_OFFSET_ERASE_REGIONS +
|
|
i * 4);
|
|
erase_region_size =
|
|
(tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
|
|
tmp >>= 16;
|
|
erase_region_count = (tmp & 0xffff) + 1;
|
|
debug ("erase_region_count = %d erase_region_size = %d\n",
|
|
erase_region_count, erase_region_size);
|
|
for (j = 0; j < erase_region_count; j++) {
|
|
info->start[sect_cnt] = sector;
|
|
sector += (erase_region_size * size_ratio);
|
|
info->protect[sect_cnt] =
|
|
flash_isset (info, sect_cnt,
|
|
FLASH_OFFSET_PROTECT,
|
|
FLASH_STATUS_PROTECT);
|
|
sect_cnt++;
|
|
}
|
|
}
|
|
|
|
info->sector_count = sect_cnt;
|
|
/* multiply the size by the number of chips */
|
|
info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio;
|
|
info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
|
|
tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
|
|
info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
|
|
tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
|
|
info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
|
|
tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT);
|
|
info->write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT))) / 1000;
|
|
info->flash_id = FLASH_MAN_CFI;
|
|
if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
|
|
info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */
|
|
}
|
|
}
|
|
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
|
|
return (info->size);
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
static int flash_write_cfiword (flash_info_t * info, ulong dest,
|
|
cfiword_t cword)
|
|
{
|
|
|
|
cfiptr_t ctladdr;
|
|
cfiptr_t cptr;
|
|
int flag;
|
|
|
|
ctladdr.cp = flash_make_addr (info, 0, 0);
|
|
cptr.cp = (uchar *) dest;
|
|
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
flag = ((cptr.cp[0] & cword.c) == cword.c);
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
flag = ((cptr.wp[0] & cword.w) == cword.w);
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
flag = ((cptr.lp[0] & cword.l) == cword.l);
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
flag = ((cptr.lp[0] & cword.ll) == cword.ll);
|
|
break;
|
|
default:
|
|
return 2;
|
|
}
|
|
if (!flag)
|
|
return 2;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
switch (info->vendor) {
|
|
case CFI_CMDSET_INTEL_EXTENDED:
|
|
case CFI_CMDSET_INTEL_STANDARD:
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
|
|
flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
|
|
break;
|
|
case CFI_CMDSET_AMD_EXTENDED:
|
|
case CFI_CMDSET_AMD_STANDARD:
|
|
flash_unlock_seq (info, 0);
|
|
flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE);
|
|
break;
|
|
}
|
|
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
cptr.cp[0] = cword.c;
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
cptr.wp[0] = cword.w;
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
cptr.lp[0] = cword.l;
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
cptr.llp[0] = cword.ll;
|
|
break;
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
return flash_full_status_check (info, 0, info->write_tout, "write");
|
|
}
|
|
|
|
#ifdef CFG_FLASH_USE_BUFFER_WRITE
|
|
|
|
/* loop through the sectors from the highest address
|
|
* when the passed address is greater or equal to the sector address
|
|
* we have a match
|
|
*/
|
|
static flash_sect_t find_sector (flash_info_t * info, ulong addr)
|
|
{
|
|
flash_sect_t sector;
|
|
|
|
for (sector = info->sector_count - 1; sector >= 0; sector--) {
|
|
if (addr >= info->start[sector])
|
|
break;
|
|
}
|
|
return sector;
|
|
}
|
|
|
|
static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
|
|
int len)
|
|
{
|
|
flash_sect_t sector;
|
|
int cnt;
|
|
int retcode;
|
|
volatile cfiptr_t src;
|
|
volatile cfiptr_t dst;
|
|
/* buffered writes in the AMD chip set is not supported yet */
|
|
if((info->vendor == CFI_CMDSET_AMD_STANDARD) ||
|
|
(info->vendor == CFI_CMDSET_AMD_EXTENDED))
|
|
return ERR_INVAL;
|
|
|
|
src.cp = cp;
|
|
dst.cp = (uchar *) dest;
|
|
sector = find_sector (info, dest);
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
|
|
if ((retcode =
|
|
flash_status_check (info, sector, info->buffer_write_tout,
|
|
"write to buffer")) == ERR_OK) {
|
|
/* reduce the number of loops by the width of the port */
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
cnt = len;
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
cnt = len >> 1;
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
cnt = len >> 2;
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
cnt = len >> 3;
|
|
break;
|
|
default:
|
|
return ERR_INVAL;
|
|
break;
|
|
}
|
|
flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
|
|
while (cnt-- > 0) {
|
|
switch (info->portwidth) {
|
|
case FLASH_CFI_8BIT:
|
|
*dst.cp++ = *src.cp++;
|
|
break;
|
|
case FLASH_CFI_16BIT:
|
|
*dst.wp++ = *src.wp++;
|
|
break;
|
|
case FLASH_CFI_32BIT:
|
|
*dst.lp++ = *src.lp++;
|
|
break;
|
|
case FLASH_CFI_64BIT:
|
|
*dst.llp++ = *src.llp++;
|
|
break;
|
|
default:
|
|
return ERR_INVAL;
|
|
break;
|
|
}
|
|
}
|
|
flash_write_cmd (info, sector, 0,
|
|
FLASH_CMD_WRITE_BUFFER_CONFIRM);
|
|
retcode =
|
|
flash_full_status_check (info, sector,
|
|
info->buffer_write_tout,
|
|
"buffer write");
|
|
}
|
|
flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
|
|
return retcode;
|
|
}
|
|
#endif /* CFG_USE_FLASH_BUFFER_WRITE */
|
|
#endif /* CFG_FLASH_CFI */
|
|
|