You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
254 lines
7.8 KiB
C
254 lines
7.8 KiB
C
/*
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2002, 2003 ETC s.r.o.
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA
|
|
* 02111-1307, USA.
|
|
*
|
|
* Written by Marcel Telka <marcel@telka.sk>, 2002, 2003.
|
|
*
|
|
* Documentation:
|
|
* [1] JEDEC Solid State Technology Association, "Common Flash Interface (CFI)",
|
|
* September 1999, Order Number: JESD68
|
|
* [2] Intel Corporation, "Common Flash Interface (CFI) and Command Sets
|
|
* Application Note 646", April 2000, Order Number: 292204-004
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <flash/cfi.h>
|
|
|
|
#include "cfi.h"
|
|
#include "bus.h"
|
|
|
|
void
|
|
cfi_array_free( cfi_array_t *cfi_array )
|
|
{
|
|
if (!cfi_array)
|
|
return;
|
|
|
|
if (cfi_array->cfi_chips) {
|
|
int i;
|
|
|
|
for (i = 0; i < cfi_array->bus_width; i++) {
|
|
if (!cfi_array->cfi_chips[i])
|
|
continue;
|
|
|
|
free( cfi_array->cfi_chips[i]->cfi.device_geometry.erase_block_regions );
|
|
free( cfi_array->cfi_chips[i] );
|
|
}
|
|
free( cfi_array->cfi_chips );
|
|
}
|
|
|
|
free( cfi_array );
|
|
}
|
|
|
|
int
|
|
cfi_detect( bus_t *bus, uint32_t adr, cfi_array_t **cfi_array )
|
|
{
|
|
unsigned int bw; /* bus width */
|
|
unsigned int d; /* data offset */
|
|
int ba; /* bus width address multiplier */
|
|
int ma; /* flash mode address multiplier */
|
|
|
|
if (!cfi_array || !bus)
|
|
return -1; /* invalid parameters */
|
|
|
|
*cfi_array = calloc( 1, sizeof (cfi_array_t) );
|
|
if (!*cfi_array)
|
|
return -2; /* out of memory */
|
|
|
|
(*cfi_array)->bus = bus;
|
|
(*cfi_array)->address = adr;
|
|
bw = bus_width( bus, adr );
|
|
if (bw != 8 && bw != 16 && bw != 32)
|
|
return -3; /* invalid bus width */
|
|
(*cfi_array)->bus_width = ba = bw / 8;
|
|
(*cfi_array)->cfi_chips = calloc( ba, sizeof (cfi_chip_t *) );
|
|
if (!(*cfi_array)->cfi_chips)
|
|
return -2; /* out of memory */
|
|
|
|
for (d = 0; d < bw; d += 8) {
|
|
#define A(off) (adr + (off) * ba * ma)
|
|
#define D(data) ((data) << d)
|
|
#define gD(data) (((data) >> d) & 0xFF)
|
|
#define read1(off) gD(bus_read( bus, A(off) ))
|
|
#define read2(off) (bus_read_start( bus, A(off) ), gD(bus_read_next( bus, A(off + 1) )) | gD(bus_read_end( bus )) << 8)
|
|
#define write1(off,data) bus_write( bus, A(off), D(data) )
|
|
|
|
cfi_query_structure_t *cfi;
|
|
uint32_t tmp;
|
|
ma = 1;
|
|
|
|
/* detect CFI capable devices - see Table 1 in [1] */
|
|
write1( CFI_CMD_QUERY_OFFSET, CFI_CMD_QUERY );
|
|
|
|
if (read1(CFI_QUERY_ID_OFFSET) != 'Q') {
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
return -4; /* CFI not detected (Q) */
|
|
}
|
|
|
|
for (; ma <= 4; ma *= 2)
|
|
if (read1(CFI_QUERY_ID_OFFSET + 1) == 'R')
|
|
break;
|
|
if (ma > 4) {
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
return -5; /* CFI not detected (R) */
|
|
}
|
|
|
|
if (read1(CFI_QUERY_ID_OFFSET + 2) != 'Y') {
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
return -6; /* CFI not detected (Y) */
|
|
}
|
|
|
|
(*cfi_array)->cfi_chips[d / 8] = calloc( 1, sizeof (cfi_chip_t) );
|
|
if (!(*cfi_array)->cfi_chips[d / 8]) {
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
return -2; /* out of memory */
|
|
}
|
|
cfi = &(*cfi_array)->cfi_chips[d / 8]->cfi;
|
|
|
|
/* Identification string - see Table 6 in [1] */
|
|
cfi->identification_string.pri_id_code = read2(PRI_VENDOR_ID_OFFSET);
|
|
cfi->identification_string.pri_vendor_tbl = NULL;
|
|
cfi->identification_string.alt_id_code = read2(ALT_VENDOR_ID_OFFSET);
|
|
cfi->identification_string.alt_vendor_tbl = NULL;
|
|
|
|
/* System interface information - see Table 7 in [1] */
|
|
tmp = read1(VCC_MIN_WEV_OFFSET);
|
|
cfi->system_interface_info.vcc_min_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
|
|
tmp = read1(VCC_MAX_WEV_OFFSET);
|
|
cfi->system_interface_info.vcc_max_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
|
|
tmp = read1(VPP_MIN_WEV_OFFSET);
|
|
cfi->system_interface_info.vpp_min_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
|
|
tmp = read1(VPP_MAX_WEV_OFFSET);
|
|
cfi->system_interface_info.vpp_max_wev = ((tmp >> 4) & 0xF) * 1000 + (tmp & 0xF) * 100;
|
|
|
|
/* TODO: Add out of range checks for timeouts */
|
|
tmp = read1(TYP_SINGLE_WRITE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.typ_single_write_timeout = tmp ? (1 << tmp) : 0;
|
|
|
|
tmp = read1(TYP_BUFFER_WRITE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.typ_buffer_write_timeout = tmp ? (1 << tmp) : 0;
|
|
|
|
tmp = read1(TYP_BLOCK_ERASE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.typ_block_erase_timeout = tmp ? (1 << tmp) : 0;
|
|
|
|
tmp = read1(TYP_CHIP_ERASE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.typ_chip_erase_timeout = tmp ? (1 << tmp) : 0;
|
|
|
|
tmp = read1(MAX_SINGLE_WRITE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.max_single_write_timeout =
|
|
(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_single_write_timeout;
|
|
|
|
tmp = read1(MAX_BUFFER_WRITE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.max_buffer_write_timeout =
|
|
(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_buffer_write_timeout;
|
|
|
|
tmp = read1(MAX_BLOCK_ERASE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.max_block_erase_timeout =
|
|
(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_block_erase_timeout;
|
|
|
|
tmp = read1(MAX_CHIP_ERASE_TIMEOUT_OFFSET);
|
|
cfi->system_interface_info.max_chip_erase_timeout =
|
|
(tmp ? (1 << tmp) : 0) * cfi->system_interface_info.typ_chip_erase_timeout;
|
|
|
|
/* Device geometry - see Table 8 in [1] */
|
|
/* TODO: Add out of range check */
|
|
cfi->device_geometry.device_size = 1 << read1(DEVICE_SIZE_OFFSET);
|
|
|
|
cfi->device_geometry.device_interface = read2(FLASH_DEVICE_INTERFACE_OFFSET);
|
|
|
|
/* TODO: Add out of range check */
|
|
cfi->device_geometry.max_bytes_write = 1 << read2(MAX_BYTES_WRITE_OFFSET);
|
|
|
|
tmp = cfi->device_geometry.number_of_erase_regions = read1(NUMBER_OF_ERASE_REGIONS_OFFSET);
|
|
|
|
cfi->device_geometry.erase_block_regions = malloc( tmp * sizeof (cfi_erase_block_region_t) );
|
|
if (!cfi->device_geometry.erase_block_regions) {
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
return -2; /* out of memory */
|
|
}
|
|
|
|
{
|
|
int a;
|
|
int i;
|
|
|
|
for (i = 0, a = ERASE_BLOCK_REGION_OFFSET; i < tmp; i++, a += 4) {
|
|
uint32_t y = read2(a);
|
|
uint32_t z = read2(a + 2) << 8;
|
|
if (z == 0)
|
|
z = 128;
|
|
cfi->device_geometry.erase_block_regions[i].erase_block_size = z;
|
|
cfi->device_geometry.erase_block_regions[i].number_of_erase_blocks = y + 1;
|
|
}
|
|
}
|
|
|
|
/* TODO: Intel Primary Algorithm Extended Query Table - see Table 5. in [2] */
|
|
|
|
/* Read Array */
|
|
write1( 0, CFI_CMD_READ_ARRAY1 );
|
|
|
|
#undef A
|
|
#undef D
|
|
#undef gD
|
|
#undef read1
|
|
#undef read2
|
|
#undef write1
|
|
|
|
switch (cfi->device_geometry.device_interface) {
|
|
case CFI_INTERFACE_X8:
|
|
if (ma != 1)
|
|
return -7; /* error in device detection */
|
|
(*cfi_array)->cfi_chips[d / 8]->width = 1;
|
|
break;
|
|
case CFI_INTERFACE_X16:
|
|
if (ma != 1)
|
|
return -7; /* error in device detection */
|
|
(*cfi_array)->cfi_chips[d / 8]->width = 2;
|
|
d += 8;
|
|
break;
|
|
case CFI_INTERFACE_X8_X16:
|
|
if (ma != 1 && ma != 2)
|
|
return -7; /* error in device detection */
|
|
(*cfi_array)->cfi_chips[d / 8]->width = 2 / ma;
|
|
if (ma == 1)
|
|
d += 8;
|
|
break;
|
|
case CFI_INTERFACE_X32:
|
|
if (ma != 1)
|
|
return -7; /* error in device detection */
|
|
(*cfi_array)->cfi_chips[d / 8]->width = 4;
|
|
d += 24;
|
|
break;
|
|
case CFI_INTERFACE_X16_X32:
|
|
if (ma != 1 && ma != 2)
|
|
return -7; /* error in device detection */
|
|
(*cfi_array)->cfi_chips[d / 8]->width = 4 / ma;
|
|
if (ma == 1)
|
|
d += 24;
|
|
else
|
|
d += 8;
|
|
break;
|
|
default:
|
|
return -7; /* error in device detection */
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|