Hi,

I bought two board with an arm7tdi.

When i started my experiments was possible to read the flash (unsupported) EON EN29LV320AB trought the cfi. When i tried to unlock the
sectors, just only unlock, some thing gone wrong and the cfi has stopped to work. To be sure about my operations i tried with the second identical board with the same results.

Now, forcing the setting with a similar memory type and disabling the check on the manufacturer and flash id, i can read the memory. Unfortunately is not possible to unlock and erase the flash to rewrite it.

I tried to put different flash address in the settings , but no one permit to have the cfi working.

This is the result with the flash autodetection:


Connecting ...
- Connecting via USB to J-Link device 0
- J-Link firmware: V1.20 (J-Link compiled Feb 20 2006 18:20:20 -- Update --)
- JTAG speed: 2666 kHz (Auto)
- Initializing CPU core (Init sequence) ...
- Executing Reset (0, 0 ms)
- Initialized successfully
- JTAG speed: 2666 kHz (Auto)
- J-Link found 1 JTAG device. Core ID: 0x1F0F0F0F (ARM7)
- Reading CFI info ...
- Could not find CFI compliant flash device
- Detecting flash memory ...
- ERROR: Could not find any flash devices
- ERROR: Failed to connect

Any help is appreciate

Regards
Gof.

After a night with many tests (a real bruteforce), i think to have found a solution.

When i connect the device, the program will write in the flash/sdram register to init it.

Now i have :



- Connecting ...
- Connecting via USB to J-Link device 0
- J-Link firmware: V1.20 (J-Link compiled Feb 20 2006 18:20:20 -- Update --)
- JTAG speed: 5 kHz (Fixed)
- Initializing CPU core (Init sequence) ...
- Executing Reset (0, 0 ms)
- Executing Write 32bit (0x0D000004, 0x00000073)
- Executing Write 32bit (0x0D00000C, 0x00000071)
- Executing Write 32bit (0x0D000008, 0x00000002)
- Executing Write 32bit (0x0D000010, 0x00000003)
- Executing Write 32bit (0x0D000014, 0x00000840)
- Executing Write 32bit (0x0D000020, 0x00000001)
- Executing Write 32bit (0x0D000018, 0x000000C0)
- Executing Write 32bit (0x0D000010, 0x00000000)
- Initialized successfully
- JTAG speed: 1000 kHz (Fixed)
- J-Link found 1 JTAG device. Core ID: 0x1F0F0F0F (ARM7)
- Reading CFI info ...
- Found CFI compliant flash device
- 2 block regions
- 8 sectors with 8 KB
- 63 sectors with 64 KB
- Flash ID (Chip 0) = 0x7F22F9
- Matching flash chip found: "Eon EN29LV320AB"
- CFI info read successfully
- Connected successfully

But the strange thing is that in the begining it work without any init.

Now i have a doubt.... why if i set the physical flash address ( 0x04000000 ) the program say:


- Reading CFI info ...
- Could not find CFI compliant flash device
- Detecting flash memory ...
- Flash ID (Chip 0) = 0x19F02860
- Flash memory detected successfully

but if i use a different address it found the flash?


I tried to add my flash in your cvs. Can be good this ?

Eon;EN29LV320AB;7F22F9;7F00F9;0;1;0;16;1;0;0;0;0;0;0;0;0;0;0;0;0;"2000[8]; 10000[63];"

( i tried it and appear to work )


Many tnx for the nice support.

Regards
Gof.

I found the solution to my problems. I lose many days because this china guy are very poor (like my english ).

This board has a little flash encryption. If i not enable a flag , when i read the memory it is broken.

So, tnx again for the help
Gof.