getdriveid() fails

Hi paul,

Could you please mention the BIOS PSP version and the RTFS package version which you are using?

Considering the BIOS PSP package 1.30.01 is being used by you, i can suggest few points:

1. As mention in the C6748_BIOSPSP_Userguide.doc section 14.12.1.3, you need to have a daughter card connected to EVM.

2. Try with the example provided in the PSP (pspdrivers_01_30_01\packages\ti\pspiom\examples\evm6748\nand ), which exercises the NAND in raw mode.

Once after considering the above points if the issue still persists, Please let me know.

Thanks and Regards,

Sandeep K

Paul,

Did you have any luck with Sandeep's suggestions from the above post?

Thanks,

Steve

Hi!

My configuration is:

ccsv_4.2.0.10018
bios_6.30.02.42
xdc_3.20.03.63
edma3_lld_2.10.03.04
ipc_1.21.02.23
ndk_2.20.00.19
psp_02.10.01

OMAPL137 DSP core

I have the same problem on my custom board.

When I work with the 2048 page size NAND, RTFS works fine

When I switch to the 4096 page size NAND, RTFS failes at GetDriveID

In raw mode both of NAND works fine (I had to add 4096 support to NAND psp driver)

I think  RTFS doesn`t support 4096 page size:

/* use config modules to get RTFS configuration libraries */
xdc.useModule('ti.rtfs.xdcconfig.Rtfs');

/* used the Drive module to configure a Nand flash drive for RTFS */
var Drive = xdc.useModule('ti.rtfs.xdcconfig.Drive');
// configure a nand device
var nand = Drive.create();
nand.sectorSize = 4096;
// set the type of this drive
nand.driveType = Drive.DriveType_NAND;

// create + configure partitions
var nandPart0 = new Drive.Partition();
nand.addPartition(nandPart0);

I think I should change

NAND_CFG_SECTORSIZE

option in fsadaptmem.h

and rebuild RTFS

Am I right?

Yuri,

which version of RTFS are you using?  I think you left that one out ...

I'm debugging this issue right now to get to the root of it.  I'll get back to you as soon as I have more info

Steve

Steve,

thank you for the answer!

I`m using RTFS 1.10.02.32

Yuri,

I found the code that is causing the error, and it is checking the sector size value of 4096 - set in your RTFS configuration - against the sector size set by the PSP NAND driver - which is 2048.

According to the PSP driver documentation for NAND (), I see that the driver is designed to find the sector size that is supported by the actual NAND part, and the driver then sets sector size to whatever the hardware supports.  Here's what I see in the docs:

14.3.2 Supports 512-byte page and 2048-byte page NAND devices
NAND driver supports both 512-byte page and 2048-byte page devices. The driver
learns about the page size of the device by looking up the device ID and
manufacturer ID in the NAND device organization lookup table. Sector write and read
operations are then performed for the entire length of the sector without requiring
additional configurations.

So, it looks like the a sector size of 4096 is not supported.  But, if you would like more information, we can ask the PSP drivers team for further details on this.

Also, I tried setting the nand.sectorSize = 512, but this also fails with the same error.  I suspect that if the NAND chip on the 6747 EVM does support that size, then it may be necessary to configure the driver for that sector size.

I've filed a bug to update the RTFS documentation to warn the user about this issue:

SDOCM00081796 RTFS cdoc should inform user that sectorSize must match the sector size of the actual device, as determined/configured by PSP

Steve

Steve,

As I posted later I`ve changed PSP NAND driver to work with 4096 page NAND. So the sector size in the PSP matches the sector size in RTFS. Any other sugessions?

Hi Yuri,

I'm not sure that I saw your post in which you said you tried that already.  Could you explain the changes you made to the PSP NAND driver for a 4096 page size?  (or if you have already explained these details in the post  you are referring to, could you please reply with the link to that post?).

As I said previously, I suspect that the flash hardware on the evm 6747 board does not support a page size of 4096.  I will ask for the PSP team to comment on this.

Thanks,

Steve

Yuri,

I have contacted someone from the PSP drivers team.  Here is what he said:

"As far as NAND driver (in PSP 2.10.01 for evm6747) is concerned, it supports only 512 and 2048 bytes page size. Refer section 14.1.1 of user guide “DA830_BIOSPSP_Userguide”. So to support 4096 bytes, the driver needs to be modified.

 If you refer the  http://focus.ti.com/lit/ug/sprufl6f/sprufl6f.pdf  (EMIFA document), there is no mention of page size restriction for NAND Flash. Only thing, which need to be considered is data width of the NAND which either can be 8 bit or 16 bit.

 As per the post, the NAND driver works fine for 4096 bytes (after modification) in raw mode of operation. So then there could be some problem (in RTFS mode) in populating the NAND device info and RTFS might be getting confused.

 Let me know, if you have any more info."

I see that there is a check in RTFS where this failure is occurring:

        /* Check for a missmatch */

        if ((int)pmedia_parms->sector_size_bytes != pconfig->sector_size)  // ********* this check fails b/c 4096 != 2048.  pcofnig->sector_size is set in PSP driver

                return(-1);

So, I think that if you rebuild the NAND driver to use a sector size of 4096 bytes, this will allow the above check to pass and your RTFS app to work.

Thanks,

Steve

Steve,

this is the driver with the 4096 page support

7026.nand_psp.rar

Yuriy,

Just to confirm the driver is properly returning with the appropriate page size(4096). Could you place the breakpoint in LLC_nandLookupDeviceInfo() in the file llc_nand.c and check the values populate in the "devInfo".

This will verify that the llc driver is returning back with proper page size or not.

Let me know the result.  

Thanks and Regards,

Sandeep K

Sandeep,

I don`t determine device info automatically from the tables, so LLC_nandLookupDeviceInfo() doesn`t execute.

I fill the stucture of devinfo manually and pass it to the driver.

After breakpoint in the LLC_nandInit at lines:

 else
        {
            /* Application has provided the device configuration. Keep a      *
             * copy of this information.                                      */
            memcpy(
                (Ptr)&appNandDevInfo,
                (Ptr)initCfg->deviceInfo,
                sizeof(PSP_nandDeviceInfo));

            hNandObj->nandDevInfo = (PSP_nandDeviceInfo*)&appNandDevInfo;
            *devInfo = hNandObj->nandDevInfo;

............................................................

*(nandDevInfo) = {...}

vendorId = 236

deviceId = 213

pageSize = 4096

pagesPerBlock = 64

numBlocks = 8192

spareAreaSize = 128

dataBusWidth = 8

Best regards,

Yuriy

Sandeep,

I`ve checked all the places you mentioned.

All the structures contain the same NAND device information (which is good one)

I`ve checked ftlInitObj, ftlObj, hNandObj, llcInitCfg - everywhere sector size is 4096.

I can`t execute getdrvinfo because the first parameter of the fuction is the drive handle

This drive handle should be returned by the getdriveid function, but it fails.

Best regards,

Yuriy