damaged DoC MD2808-D08?
Niki Waibel
niki.waibel at newlogic.com
Thu Sep 18 03:04:01 CEST 2003
On 18-Sep-2003 ??? wrote:
> Did you try to read the ECC area and check with the ECC status
> registers ?
do you mean this:
===
probe_md2802: ChipID: 0x30
probe_md2802: DOCStatus: 0x01
probe_md2802: FloorSelect: 0x00
probe_md2802: CDSNControl: 0x80
probe_md2802: CDSNDeviceSelect: 0x00
probe_md2802: ECCConfiguration: 0x82
probe_md2802: CDSNSlowIO: 0x82
probe_md2802: ECCSyndrome0: 0xff
probe_md2802: ECCSyndrome1: 0x00
probe_md2802: ECCSyndrome2: 0xff
probe_md2802: ECCSyndrome3: 0xff
probe_md2802: ECCSyndrome4: 0xff
probe_md2802: ECCSyndrome5: 0xff
probe_md2802: AliasResolution: 0x00
probe_md2802: ConfigurationInput: 0x01
probe_md2802: ReadPipelineInitialization: 0x01
probe_md2802: LastDataRead: 0xe6
probe_md2802:
probe_md2802: checking ECCConfiguration toggle bit
probe_md2802: 0x01 0x00 0x01 0x00 0x01 0x00 0x01 0x00 0x01 0x00
probe_md2802: toggle result: 0/5
===
or do you mean the ecc stuff in the flash (nand_ecc) itself?
niki
> ----- Original Message -----
> From: "Niki Waibel" <niki.waibel at newlogic.com>
> To: <linux-mtd at lists.infradead.org>
> Cc: <linuxbios at clustermatic.org>
> Sent: Wednesday, September 17, 2003 6:13 PM
> Subject: damaged DoC MD2808-D08?
>
>
> my DoC MD2808-D08 responds fine to the control registers
> (chipid and ecc toggle bit are ok i.e.).
>
> but if it comes to the stage of sending nand commands and
> reading memory it seems to do nothing.
>
> if mem is read from the same IO reg (0x800) then
> i always get the same value (0x55). also if the
> nand ID command is sent, 0x800 responses with 0x55.
> 0x55 is the beginning of 0x55 0xaa 0x10 0xeb which
> is the beginning of the IPL code (rom extension)...
>
> in addition if i read a page. and then read it again.
> i get some different bytes:
> ===
> --- xxx.xxd 2003-09-17 12:01:44.615883064 +0200
> +++ xxx2.xxd 2003-09-17 12:01:44.629880936 +0200
> @@ -1,67 +1,67 @@
> 0000000: 55aa 10eb 3c00 0028 4329 4d2d 5379 7374 U...<..(C)M-Syst
> 0000010: 656d 7331 3939 3800 0000 2100 0004 001c ems1998...!.....
> 0000020: 5524 506e 5001 0200 0000 1e6d 1a01 1000 U$PnP......m....
> -0000030: 0000 0000 8001 9400 0000 0000 8181 8181 ................
> +0000030: 0000 0000 8001 9400 0000 0000 8181 98e6 ................
> 0000040: 009c 5053 5152 5657 551e 06ba c01f 33c0 ..PSQRVWU.....3.
> -0000050: 8ec0 33ff 83c2 408e da81 fa00 8181 8181 ..3... at .........
> +0000050: 8ec0 33ff 83c2 408e da81 fa00 439a 8181 ..3... at .....C...
> 0000060: f6b9 0002 fcad 0bc0 75e8 e2f9 83ff 0075 ........u......u
> -0000070: 021e 0747 83ff 3072 8181 8181 8181 98e6 ...G..0r........
> +0000070: 021e 0747 83ff 3072 8181 98e6 439a 8181 ...G..0r....C...
> 0000080: 588e c20e 1f8b ec83 ec04 8cc0 8c46 fec7 X............F..
> 0000090: 46fc ab00 0ee8 1300 8b46 fe8e c033 ffb9 F........F...3..
> 00000a0: 0060 33c0 fcf3 ab8b e5eb 7455 8bec 8b46 .`3.......tU...F
> -00000b0: 048e d8bb 0000 c687 439a 0081 8181 8198 ........C.......
> +00000b0: 048e d8bb 0000 c687 0381 0081 8181 8181 ................
> 00000c0: c687 0210 85be 0008 b1ff e85d 00fc 32e4 ...........]..2.
> -00000d0: b100 e855 002e 8b0e e643 9a81 8181 8181 ...U.....C......
> +00000d0: b100 e855 002e 8b0e 8181 8181 8181 8181 ...U............
> 00000e0: 7523 c687 0410 0d2e 8b16 1c00 8181 8181 u#..............
> -00000f0: 8814 8834 8181 8181 8181 8181 8181 8198 ...4............
> +00000f0: 8898 8834 e643 9a81 8181 8198 e643 9a81 ...4.C.......C..
> 0000100: 1009 e836 0084 870d 10ac 02e0 aa4e e2cc ...6.........N..
> 0000110: 2e3a 2620 0075 065d 0633 c050 cb5d cb07 .:& .u.].3.P.]..
> 0000120: 1f5d 5f5e 5a59 5b58 9dcb c687 0410 0b88 .]_^ZY[X........
> -0000130: 0cc6 871e 1000 c687 0410 09f6 e643 9a81 .............C..
> +0000130: 0cc6 871e 1000 c687 0410 09f6 8181 8181 ................
> 0000140: f687 2010 80f6 8720 1080 f687 2010 80f6 .. .... .... ...
> -0000150: 8704 1080 74f9 f687 2010 80f6 8181 8198 ....t... .......
> -0000160: c31c 0000 0000 0000 0000 0000 e600 439a ..............C.
> -0000170: 0000 0000 0000 8181 8181 8181 8181 8181 ................
> +0000150: 8704 1080 74f9 f687 2010 80f6 8181 8181 ....t... .......
> +0000160: c31c 0000 0000 0000 0000 0000 0000 8181 ................
> +0000170: 0000 0000 8181 0000 8181 8181 8181 8198 ................
> 0000180: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000190: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00001a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> -00001b0: 0000 0000 0000 0000 8181 8181 8181 8181 ................
> +00001b0: 0000 0000 0000 0000 e643 9a81 8181 8198 .........C......
> 00001c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> -00001d0: 0000 0000 0000 0000 8181 98e6 439a 8181 ............C...
> -00001e0: 0000 0000 0000 0000 0000 0000 8181 98e6 ................
> -00001f0: 0000 0000 439a 8181 8181 8181 8181 8181 ....C...........
> +00001d0: 0000 0000 0000 0000 e643 9a81 8181 8181 .........C......
> +00001e0: 0000 0000 0000 0000 0000 0000 8181 8181 ................
> +00001f0: 8100 0000 8181 8181 8181 8181 8181 9898 ................
> 0000200: 55aa 10eb 3c00 0028 4329 4d2d 5379 7374 U...<..(C)M-Syst
> 0000210: 656d 7331 3939 3800 0000 2100 0004 001c ems1998...!.....
> 0000220: 5524 506e 5001 0200 0000 1e6d 1a01 1000 U$PnP......m....
> -0000230: 0000 0000 8001 9400 0000 0000 8181 8181 ................
> +0000230: 0000 0000 8001 9400 0000 0000 439a 8181 ............C...
> 0000240: 009c 5053 5152 5657 551e 06ba c01f 33c0 ..PSQRVWU.....3.
> -0000250: 8ec0 33ff 83c2 408e da81 fa00 8181 8181 ..3... at .........
> -0000260: f6b9 0002 fcad 0bc0 75e8 e2f9 83ff 8175 ........u......u
> -0000270: 021e 0747 83ff 3072 8198 e643 9a81 8181 ...G..0r...C....
> +0000250: 8ec0 33ff 83c2 408e da81 fa00 8181 98e6 ..3... at .........
> +0000260: f6b9 0002 fcad 0bc0 75e8 e2f9 83ff 0043 ........u......C
> +0000270: 021e 0747 83ff 3072 9a81 8181 8181 8181 ...G..0r........
> 0000280: 588e c20e 1f8b ec83 ec04 8cc0 8c46 fec7 X............F..
> 0000290: 46fc ab00 0ee8 1300 8b46 fe8e c033 ffb9 F........F...3..
> 00002a0: 0060 33c0 fcf3 ab8b e5eb 7455 8bec 8b46 .`3.......tU...F
> -00002b0: 048e d8bb 0000 c687 0381 98e6 439a 8181 ............C...
> +00002b0: 048e d8bb 0000 c687 8181 8181 8181 8181 ................
> 00002c0: c687 0210 85be 0008 b1ff e85d 00fc 32e4 ...........]..2.
> -00002d0: b100 e855 002e 8b0e 8181 8181 8181 8181 ...U............
> -00002e0: 7523 c687 0410 0d2e 8b16 1c00 8181 8181 u#..............
> -00002f0: 8814 8881 8181 8181 8198 e643 9a81 8181 ...........C....
> +00002d0: b100 e855 002e 8b0e 8181 8181 8198 e643 ...U...........C
> +00002e0: 7523 c687 0410 0d2e 8b16 1c00 9a81 8181 u#..............
> +00002f0: 8814 8834 8198 e643 9a81 8181 8181 8181 ...4...C........
> 0000300: 1009 e836 0084 870d 10ac 02e0 aa4e e2cc ...6.........N..
> 0000310: 2e3a 2620 0075 065d 0633 c050 cb5d cb07 .:& .u.].3.P.]..
> 0000320: 1f5d 5f5e 5a59 5b58 9dcb c687 0410 0b88 .]_^ZY[X........
> -0000330: 0cc6 871e 1000 c687 0410 09f6 8198 e643 ...............C
> +0000330: 0cc6 871e 1000 c687 0410 09f6 8181 8181 ................
> 0000340: f687 2010 80f6 8720 1080 f687 2010 80f6 .. .... .... ...
> -0000350: 8704 1080 74f9 f687 2010 80f6 9a81 8181 ....t... .......
> -0000360: c31c 0000 0000 0000 0000 0000 8100 0081 ................
> -0000370: 0000 0000 8100 8181 8181 8181 8181 8181 ................
> +0000350: 8704 1080 74f9 f687 2010 80f6 8181 8181 ....t... .......
> +0000360: c31c 0000 0000 0000 0000 0000 0081 8181 ................
> +0000370: 0000 0000 0000 0000 8181 98e6 439a 8181 ............C...
> 0000380: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000390: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00003a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> -00003b0: 0000 0000 0000 0000 8181 8181 98e6 439a ..............C.
> +00003b0: 0000 0000 0000 0000 8181 98e6 439a 8181 ............C...
> 00003c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> -00003d0: 0000 0000 0000 0000 8181 8181 98e6 439a ..............C.
> +00003d0: 0000 0000 0000 0000 8181 8181 8181 8181 ................
> 00003e0: 0000 0000 0000 0000 0000 0000 8181 8181 ................
> -00003f0: 0000 8100 8181 8181 8181 8181 8181 8181 ................
> +00003f0: 8181 0000 8181 8181 98e6 439a 8181 8181 ..........C.....
> 0000400: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000410: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000420: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> ===
> that data was read by
> ===
> cmd(bios, NAND_CMD_READ0);
> adr(bios, page);
> doc_read_nop(bios); /* nop between write/read */
> doc_write_cdsncontrol(bios, CDSN_CTRL_CE);
> doc_read(bios, ReadPipelineInitialization);
> for(i=0; i<512-1; i++) {
> doc_read_4nop(bios);
> doc_read(bios, CDSNSlowIO);
> doc_read_4nop(bios);
> buf[offset++] = doc_read(bios, _CDSNIO_BASE+i);
> doc_read_4nop(bios);
> }
> buf[offset++] = doc_read(bios, LastDataRead);
> doc_write_cdsncontrol(bios, CDSN_CTRL_CE);
> if(doc_wait(bios, 5000)) {
> printf("outch...\n");
> return(-1);
> }
> ===
> if i read without CDSNSlowIO and without doc_read_4nop(bios) then the result
> is
> worse and more bits/bytes are different each read.
> if i read doc_read(bios, _CDSNIO_BASE) (***check the missing ``+ i''***)
> then
> i get 0x55 all the time (except for doc_read(bios, LastDataRead)).
>
> all this is very strange and i am beginning to think
> that my DoC (the flash in it) is damaged.
>
> any idea?
>
> niki w. waibel
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