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90447ecbba
Add entry for 512Kx16 AMD flash to jedec_table. Read out 16bit device id if chipwidth is 16bit. Fixed coding style after Stefans feedback Signed-off-by: Tor Krill <tor@excito.com>
326 lines
8.1 KiB
C
326 lines
8.1 KiB
C
/*
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* (C) Copyright 2007
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* Michael Schwingen, <michael@schwingen.org>
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*
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* based in great part on jedec_probe.c from linux kernel:
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* (C) 2000 Red Hat. GPL'd.
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* Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
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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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*/
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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/io.h>
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#include <asm/byteorder.h>
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#include <environment.h>
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#define P_ID_AMD_STD CFI_CMDSET_AMD_LEGACY
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/* Manufacturers */
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#define MANUFACTURER_AMD 0x0001
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#define MANUFACTURER_SST 0x00BF
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/* AMD */
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#define AM29DL800BB 0x22C8
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#define AM29DL800BT 0x224A
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#define AM29F800BB 0x2258
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#define AM29F800BT 0x22D6
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#define AM29LV400BB 0x22BA
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#define AM29LV400BT 0x22B9
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#define AM29LV800BB 0x225B
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#define AM29LV800BT 0x22DA
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#define AM29LV160DT 0x22C4
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#define AM29LV160DB 0x2249
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#define AM29F017D 0x003D
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#define AM29F016D 0x00AD
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#define AM29F080 0x00D5
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#define AM29F040 0x00A4
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#define AM29LV040B 0x004F
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#define AM29F032B 0x0041
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#define AM29F002T 0x00B0
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/* SST */
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#define SST39LF800 0x2781
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#define SST39LF160 0x2782
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#define SST39VF1601 0x234b
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#define SST39LF512 0x00D4
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#define SST39LF010 0x00D5
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#define SST39LF020 0x00D6
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#define SST39LF040 0x00D7
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#define SST39SF010A 0x00B5
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#define SST39SF020A 0x00B6
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/*
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* Unlock address sets for AMD command sets.
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* Intel command sets use the MTD_UADDR_UNNECESSARY.
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* Each identifier, except MTD_UADDR_UNNECESSARY, and
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* MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
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* MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
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* initialization need not require initializing all of the
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* unlock addresses for all bit widths.
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*/
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enum uaddr {
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MTD_UADDR_NOT_SUPPORTED = 0, /* data width not supported */
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MTD_UADDR_0x0555_0x02AA,
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MTD_UADDR_0x0555_0x0AAA,
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MTD_UADDR_0x5555_0x2AAA,
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MTD_UADDR_0x0AAA_0x0555,
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MTD_UADDR_DONT_CARE, /* Requires an arbitrary address */
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MTD_UADDR_UNNECESSARY, /* Does not require any address */
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};
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struct unlock_addr {
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u32 addr1;
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u32 addr2;
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};
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/*
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* I don't like the fact that the first entry in unlock_addrs[]
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* exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
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* should not be used. The problem is that structures with
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* initializers have extra fields initialized to 0. It is _very_
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* desireable to have the unlock address entries for unsupported
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* data widths automatically initialized - that means that
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* MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
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* must go unused.
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*/
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static const struct unlock_addr unlock_addrs[] = {
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[MTD_UADDR_NOT_SUPPORTED] = {
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.addr1 = 0xffff,
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.addr2 = 0xffff
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},
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[MTD_UADDR_0x0555_0x02AA] = {
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.addr1 = 0x0555,
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.addr2 = 0x02aa
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},
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[MTD_UADDR_0x0555_0x0AAA] = {
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.addr1 = 0x0555,
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.addr2 = 0x0aaa
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},
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[MTD_UADDR_0x5555_0x2AAA] = {
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.addr1 = 0x5555,
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.addr2 = 0x2aaa
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},
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[MTD_UADDR_0x0AAA_0x0555] = {
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.addr1 = 0x0AAA,
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.addr2 = 0x0555
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},
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[MTD_UADDR_DONT_CARE] = {
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.addr1 = 0x0000, /* Doesn't matter which address */
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.addr2 = 0x0000 /* is used - must be last entry */
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},
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[MTD_UADDR_UNNECESSARY] = {
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.addr1 = 0x0000,
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.addr2 = 0x0000
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}
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};
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struct amd_flash_info {
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const __u16 mfr_id;
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const __u16 dev_id;
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const char *name;
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const int DevSize;
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const int NumEraseRegions;
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const int CmdSet;
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const __u8 uaddr[4]; /* unlock addrs for 8, 16, 32, 64 */
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const ulong regions[6];
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};
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#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
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#define SIZE_64KiB 16
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#define SIZE_128KiB 17
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#define SIZE_256KiB 18
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#define SIZE_512KiB 19
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#define SIZE_1MiB 20
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#define SIZE_2MiB 21
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#define SIZE_4MiB 22
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#define SIZE_8MiB 23
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static const struct amd_flash_info jedec_table[] = {
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#ifdef CFG_FLASH_LEGACY_256Kx8
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{
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.mfr_id = MANUFACTURER_SST,
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.dev_id = SST39LF020,
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.name = "SST 39LF020",
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.uaddr = {
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[0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
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},
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.DevSize = SIZE_256KiB,
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.CmdSet = P_ID_AMD_STD,
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.NumEraseRegions= 1,
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.regions = {
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ERASEINFO(0x01000,64),
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}
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},
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#endif
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#ifdef CFG_FLASH_LEGACY_512Kx8
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{
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.mfr_id = MANUFACTURER_AMD,
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.dev_id = AM29LV040B,
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.name = "AMD AM29LV040B",
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.uaddr = {
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[0] = MTD_UADDR_0x0555_0x02AA /* x8 */
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},
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.DevSize = SIZE_512KiB,
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.CmdSet = P_ID_AMD_STD,
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.NumEraseRegions= 1,
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.regions = {
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ERASEINFO(0x10000,8),
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}
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},
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{
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.mfr_id = MANUFACTURER_SST,
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.dev_id = SST39LF040,
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.name = "SST 39LF040",
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.uaddr = {
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[0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
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},
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.DevSize = SIZE_512KiB,
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.CmdSet = P_ID_AMD_STD,
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.NumEraseRegions= 1,
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.regions = {
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ERASEINFO(0x01000,128),
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}
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},
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#endif
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#ifdef CFG_FLASH_LEGACY_512Kx16
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{
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.mfr_id = MANUFACTURER_AMD,
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.dev_id = AM29LV400BB,
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.name = "AMD AM29LV400BB",
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.uaddr = {
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[1] = MTD_UADDR_0x0555_0x02AA /* x16 */
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},
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.DevSize = SIZE_512KiB,
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.CmdSet = CFI_CMDSET_AMD_LEGACY,
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.NumEraseRegions= 4,
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.regions = {
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ERASEINFO(0x04000,1),
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ERASEINFO(0x02000,2),
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ERASEINFO(0x08000,1),
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ERASEINFO(0x10000,7),
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}
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},
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#endif
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};
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static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base)
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{
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int i,j;
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int sect_cnt;
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int size_ratio;
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int total_size;
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enum uaddr uaddr_idx;
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size_ratio = info->portwidth / info->chipwidth;
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debug("Found JEDEC Flash: %s\n", jedec_entry->name);
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info->vendor = jedec_entry->CmdSet;
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/* Todo: do we need device-specific timeouts? */
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info->erase_blk_tout = 30000;
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info->buffer_write_tout = 1000;
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info->write_tout = 100;
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info->name = jedec_entry->name;
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/* copy unlock addresses from device table to CFI info struct. This
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is just here because the addresses are in the table anyway - if
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the flash is not detected due to wrong unlock addresses,
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flash_detect_legacy would have to try all of them before we even
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get here. */
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switch(info->chipwidth) {
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case FLASH_CFI_8BIT:
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uaddr_idx = jedec_entry->uaddr[0];
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break;
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case FLASH_CFI_16BIT:
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uaddr_idx = jedec_entry->uaddr[1];
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break;
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case FLASH_CFI_32BIT:
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uaddr_idx = jedec_entry->uaddr[2];
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break;
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default:
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uaddr_idx = MTD_UADDR_NOT_SUPPORTED;
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break;
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}
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debug("unlock address index %d\n", uaddr_idx);
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info->addr_unlock1 = unlock_addrs[uaddr_idx].addr1;
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info->addr_unlock2 = unlock_addrs[uaddr_idx].addr2;
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debug("unlock addresses are 0x%x/0x%x\n", info->addr_unlock1, info->addr_unlock2);
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sect_cnt = 0;
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total_size = 0;
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for (i = 0; i < jedec_entry->NumEraseRegions; i++) {
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ulong erase_region_size = jedec_entry->regions[i] >> 8;
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ulong erase_region_count = (jedec_entry->regions[i] & 0xff) + 1;
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total_size += erase_region_size * erase_region_count;
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debug ("erase_region_count = %d erase_region_size = %d\n",
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erase_region_count, erase_region_size);
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for (j = 0; j < erase_region_count; j++) {
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if (sect_cnt >= CFG_MAX_FLASH_SECT) {
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printf("ERROR: too many flash sectors\n");
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break;
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}
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info->start[sect_cnt] = base;
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base += (erase_region_size * size_ratio);
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sect_cnt++;
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}
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}
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info->sector_count = sect_cnt;
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info->size = total_size * size_ratio;
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}
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/*-----------------------------------------------------------------------
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* match jedec ids against table. If a match is found, fill flash_info entry
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*/
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int jedec_flash_match(flash_info_t *info, ulong base)
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{
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int ret = 0;
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int i;
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ulong mask = 0xFFFF;
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if (info->chipwidth == 1)
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mask = 0xFF;
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for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
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if ((jedec_table[i].mfr_id & mask) == (info->manufacturer_id & mask) &&
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(jedec_table[i].dev_id & mask) == (info->device_id & mask)) {
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fill_info(info, &jedec_table[i], base);
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ret = 1;
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break;
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}
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}
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return ret;
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}
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