Added detect_cfi().
git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@236 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Marcel Telka
22 years ago
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75940cb85b
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/*
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* $Id$
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*
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* Copyright (C) 2002 ETC s.r.o.
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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
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* as published by the Free Software Foundation; either version 2
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* of 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, MA
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* 02111-1307, USA.
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*
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* Written by Marcel Telka <marcel@telka.sk>, 2002.
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*
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* Documentation:
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* [1] JEDEC Solid State Technology Association, "Common Flash Interface (CFI)",
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* September 1999, Order Number: JESD68
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* [2] Intel Corporation, "Common Flash Interface (CFI) and Command Sets
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* Application Note 646", April 2000, Order Number: 292204-004
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*
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <flash/cfi.h>
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#include "bus.h"
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static uint16_t
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read2( parts *ps, uint32_t adr, int o )
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{
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uint16_t r;
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bus_read_start( ps, adr << o );
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r = bus_read_next( ps, (adr + 1) << o );
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return ((bus_read_end( ps ) & 0xFF) << 8) | (r & 0xFF);
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}
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cfi_query_structure_t *
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detect_cfi( parts *ps )
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{
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cfi_query_structure_t *cfi;
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int o = 2;
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uint32_t tmp;
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/* TODO: 2 x 16 bit only */
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/* detect CFI capable devices - see Table 1 in [1] */
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bus_write( ps, CFI_CMD_QUERY_OFFSET << o, (CFI_CMD_QUERY << 16) | CFI_CMD_QUERY );
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if (bus_read( ps, CFI_QUERY_ID_OFFSET << o ) != (('Q' << 16) | 'Q')) {
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printf( "No CFI device detected (Q)!\n" );
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return NULL;
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}
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if (bus_read( ps, (CFI_QUERY_ID_OFFSET + 1) << o ) != (('R' << 16) | 'R')) {
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printf( "No CFI device detected (R)!\n" );
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return NULL;
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}
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if (bus_read( ps, (CFI_QUERY_ID_OFFSET + 2) << o ) != (('Y' << 16) | 'Y')) {
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printf( "No CFI device detected (Y)!\n" );
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return NULL;
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}
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printf( "\n2 x 16 bit CFI devices detected (QRY ok)!\n\n" );
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cfi = malloc( sizeof *cfi );
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if (!cfi)
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return NULL;
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/* TODO: Low chip only (bits 15:0) */
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/* Identification string - see Table 6 in [1] */
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cfi->identification_string.pri_id_code = read2( ps, PRI_VENDOR_ID_OFFSET, o );
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cfi->identification_string.pri_vendor_tbl = NULL;
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cfi->identification_string.alt_id_code = read2( ps, ALT_VENDOR_ID_OFFSET, o );
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cfi->identification_string.alt_vendor_tbl = NULL;
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/* System interface information - see Table 7 in [1] */
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tmp = bus_read( ps, VCC_MIN_WEV_OFFSET << o );
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cfi->system_interface_info.vcc_min_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
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tmp = bus_read( ps, VCC_MAX_WEV_OFFSET << o );
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cfi->system_interface_info.vcc_max_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
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tmp = bus_read( ps, VPP_MIN_WEV_OFFSET << o );
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cfi->system_interface_info.vpp_min_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
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tmp = bus_read( ps, VPP_MAX_WEV_OFFSET << o );
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cfi->system_interface_info.vpp_max_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
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/* TODO: Add out of range checks for timeouts */
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tmp = bus_read( ps, TYP_SINGLE_WRITE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.typ_single_write_timeout = tmp ? (1 << tmp) : 0;
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tmp = bus_read( ps, TYP_BUFFER_WRITE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.typ_buffer_write_timeout = tmp ? (1 << tmp) : 0;
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tmp = bus_read( ps, TYP_BLOCK_ERASE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.typ_block_erase_timeout = tmp ? (1 << tmp) : 0;
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tmp = bus_read( ps, TYP_CHIP_ERASE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.typ_chip_erase_timeout = tmp ? (1 << tmp) : 0;
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tmp = bus_read( ps, MAX_SINGLE_WRITE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.max_single_write_timeout =
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(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_single_write_timeout;
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tmp = bus_read( ps, MAX_BUFFER_WRITE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.max_buffer_write_timeout =
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(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_buffer_write_timeout;
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tmp = bus_read( ps, MAX_BLOCK_ERASE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.max_block_erase_timeout =
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(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_block_erase_timeout;
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tmp = bus_read( ps, MAX_CHIP_ERASE_TIMEOUT_OFFSET << o ) & 0xFF;
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cfi->system_interface_info.max_chip_erase_timeout =
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(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_chip_erase_timeout;
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/* Device geometry - see Table 8 in [1] */
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/* TODO: Add out of range check */
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cfi->device_geometry.device_size = 1 << (bus_read( ps, DEVICE_SIZE_OFFSET << o ) & 0xFF);
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cfi->device_geometry.device_interface = read2( ps, FLASH_DEVICE_INTERFACE_OFFSET, o );
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/* TODO: Add out of range check */
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cfi->device_geometry.max_bytes_write = 1 << read2( ps, MAX_BYTES_WRITE_OFFSET, o );
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tmp = bus_read( ps, NUMBER_OF_ERASE_REGIONS_OFFSET << o ) & 0xFF;
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cfi->device_geometry.number_of_erase_regions = tmp;
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cfi->device_geometry.erase_block_regions = malloc( tmp * sizeof (cfi_erase_block_region_t) );
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if (!cfi->device_geometry.erase_block_regions) {
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free( cfi );
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return NULL;
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}
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{
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int a = ERASE_BLOCK_REGION_OFFSET;
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int i;
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for (i = 0, a = ERASE_BLOCK_REGION_OFFSET; i < tmp; i++, a += 4) {
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uint32_t y = read2( ps, a, o );
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uint32_t z = read2( ps, a + 2, o ) << 8;
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if (z == 0)
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z = 128;
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cfi->device_geometry.erase_block_regions[i].erase_block_size = z;
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cfi->device_geometry.erase_block_regions[i].number_of_erase_blocks = y + 1;
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}
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}
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/* TODO: Intel Primary Algorithm Extended Query Table - see Table 5. in [2] */
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/* Read Array */
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bus_write( ps, 0, (CFI_CMD_READ_ARRAY1 << 16) | CFI_CMD_READ_ARRAY1 );
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return cfi;
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}
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