restoring EVM DM355 NAND flash

Jorge said:

Ihave followed the steps of the "tms320dm355 DVEVM v1.30 Getting Started Guide" in the sections A.6 / A6.1 and then A.4.1

Just a small note on this, there is a newer version of the DVSDK (2.0 latest as of today) you may want to consider if you are still early in the development process.

Jorge said:

1) If I disconnect the ethernet cable, the boot sequence stops. I remeber that the out of the box configuration was self contained in the EVM, but this issue seems to indicate that the system needs files from the server to be able to boot, which I would like to avoid.

If you are booting entirely out of flash than the network should not be required as you suggest, though things may slow down while it tries to bring up the network, this should not take much time. To diagnose this I would need to take a look at your U-Boot arguments, so if you could post up what the printenv command in U-Boot outputs that would help, if it is truly dependent on the network to boot you probably have it configured to be in the arguments.

Jorge said:

2) The demos do not actually work. I am able to access the demo menu, but as soon as I try to start one, the EVM freezes.

This is a bit strange, but something we should be able to dig into further if you could post the serial terminal output from when you try to start the demo, in general you should get some sort of error message out if the demo is crashing.

Hi Bernie, Thank you so much. We have some software deseigned using the 1.30 version. Is there a chance on getting into compatibility issues?

On the NAND Flash restoration:

Your were right on the first problem. The system attempts to bring up the ethernet ports two times before skipping. I only waited for on the first time I tried, but after the second the system is able to boot without the server.

The second problem is still an issue. When I use the remote control, the system freezes, however no message is observed in the command line. Moreover the command line keeps working normally. Here are some responses I got to different things I tried. I logged into Montavista as root.

# lsmod
Module                  Size  Used by    Not tainted
dm350mmap 5204 0 - Live 0xbf000000

# ./loadmodules.sh
CMEMK Error: CMEM phys_start (0x87400000) overlaps kernel (0x80000000 -> 0x8800)
insmod: cannot insert `cmemk.ko': Invalid parameters (-1): Invalid argument
insmod: cannot insert `dm350mmap.ko': File exists (-1): File exists

# ./decode -v ./data/videos/davincieffect_ntsc.mpeg4
Decode demo started.
CMEM Error: init: Failed to open /dev/cmem: 'No such file or directory'
CMEM Error: getPhys: You must initialize CMEM before making API calls.
CMEM Error: getPhys: You must initialize CMEM before making API calls.
CMEM Error: getPhys: You must initialize CMEM before making API calls.
CMEM Error: getPhys: You must initialize CMEM before making API calls.
CMEM Error: getPhys: You must initialize CMEM before making API calls.
CMEM Error: getPhys: You must initialize CMEM before making API calls.
Decode Error: Failed to open video decode algorithm

# cd dev
# ls
MAKEDEV      ptyd4        ptyt4        ptyz4        ttyea        ttyua
console      ptyd5        ptyt5        ptyz5        ttyeb        ttyub
core         ptyd6        ptyt6        ptyz6        ttyec        ttyuc
dm350mmap    ptyd7        ptyt7        ptyz7        ttyed        ttyud
dm355_aew    ptyd8        ptyt8        ptyz8        ttyee        ttyue
dm355_af     ptyd9        ptyt9        ptyz9        ttyef        ttyuf
dm355_ipipe  ptyda        ptyta        ptyza        ttyp0        ttyv0
dsp          ptydb        ptytb        ptyzb        ttyp1        ttyv1
fb           ptydc        ptytc        ptyzc        ttyp2        ttyv2
fd           ptydd        ptytd        ptyzd        ttyp3        ttyv3
full         ptyde        ptyte        ptyze        ttyp4        ttyv4
i2c          ptydf        ptytf        ptyzf        ttyp5        ttyv5
initctl      ptye0        ptyu0        random       ttyp6        ttyv6
input        ptye1        ptyu1        rd           ttyp7        ttyv7
kmem         ptye2        ptyu2        shm          ttyp8        ttyv8
kmsg         ptye3        ptyu3        sndstat      ttyp9        ttyv9
loop         ptye4        ptyu4        sound        ttypa        ttyva
mem          ptye5        ptyu5        stderr       ttypb        ttyvb
misc         ptye6        ptyu6        stdin        ttypc        ttyvc
mixer        ptye7        ptyu7        stdout       ttypd        ttyvd
mtd0         ptye8        ptyu8        tts          ttype        ttyve
mtd0ro       ptye9        ptyu9        tty          ttypf        ttyvf
mtd1         ptyea        ptyua        ttya0        ttyq0        ttyw0
mtd1ro       ptyeb        ptyub        ttya1        ttyq1        ttyw1
mtd2         ptyec        ptyuc        ttya2        ttyq2        ttyw2
mtd2ro       ptyed        ptyud        ttya3        ttyq3        ttyw3
mtd3         ptyee        ptyue        ttya4        ttyq4        ttyw4
mtd3ro       ptyef        ptyuf        ttya5        ttyq5        ttyw5
mtd4         ptyp0        ptyv0        ttya6        ttyq6        ttyw6
mtd4ro       ptyp1        ptyv1        ttya7        ttyq7        ttyw7
mtd5         ptyp2        ptyv2        ttya8        ttyq8        ttyw8
mtd5ro       ptyp3        ptyv3        ttya9        ttyq9        ttyw9
mtdblock0    ptyp4        ptyv4        ttyaa        ttyqa        ttywa
mtdblock1    ptyp5        ptyv5        ttyab        ttyqb        ttywb
mtdblock2    ptyp6        ptyv6        ttyac        ttyqc        ttywc
mtdblock3    ptyp7        ptyv7        ttyad        ttyqd        ttywd
mtdblock4    ptyp8        ptyv8        ttyae        ttyqe        ttywe
mtdblock5    ptyp9        ptyv9        ttyaf        ttyqf        ttywf
net          ptypa        ptyva        ttyb0        ttyr0        ttyx0
null         ptypb        ptyvb        ttyb1        ttyr1        ttyx1
port         ptypc        ptyvc        ttyb2        ttyr2        ttyx2
ppp          ptypd        ptyvd        ttyb3        ttyr3        ttyx3
ptmx         ptype        ptyve        ttyb4        ttyr4        ttyx4
pts          ptypf        ptyvf        ttyb5        ttyr5        ttyx5
ptya0        ptyq0        ptyw0        ttyb6        ttyr6        ttyx6
ptya1        ptyq1        ptyw1        ttyb7        ttyr7        ttyx7
ptya2        ptyq2        ptyw2        ttyb8        ttyr8        ttyx8
ptya3        ptyq3        ptyw3        ttyb9        ttyr9        ttyx9
ptya4        ptyq4        ptyw4        ttyba        ttyra        ttyxa
ptya5        ptyq5        ptyw5        ttybb        ttyrb        ttyxb
ptya6        ptyq6        ptyw6        ttybc        ttyrc        ttyxc
ptya7        ptyq7        ptyw7        ttybd        ttyrd        ttyxd
ptya8        ptyq8        ptyw8        ttybe        ttyre        ttyxe
ptya9        ptyq9        ptyw9        ttybf        ttyrf        ttyxf
ptyaa        ptyqa        ptywa        ttyc0        ttys0        ttyy0
ptyab        ptyqb        ptywb        ttyc1        ttys1        ttyy1
ptyac        ptyqc        ptywc        ttyc2        ttys2        ttyy2
ptyad        ptyqd        ptywd        ttyc3        ttys3        ttyy3
ptyae        ptyqe        ptywe        ttyc4        ttys4        ttyy4
ptyaf        ptyqf        ptywf        ttyc5        ttys5        ttyy5
ptyb0        ptyr0        ptyx0        ttyc6        ttys6        ttyy6
ptyb1        ptyr1        ptyx1        ttyc7        ttys7        ttyy7
ptyb2        ptyr2        ptyx2        ttyc8        ttys8        ttyy8
ptyb3        ptyr3        ptyx3        ttyc9        ttys9        ttyy9
ptyb4        ptyr4        ptyx4        ttyca        ttysa        ttyya
ptyb5        ptyr5        ptyx5        ttycb        ttysb        ttyyb
ptyb6        ptyr6        ptyx6        ttycc        ttysc        ttyyc
ptyb7        ptyr7        ptyx7        ttycd        ttysd        ttyyd
ptyb8        ptyr8        ptyx8        ttyce        ttyse        ttyye
ptyb9        ptyr9        ptyx9        ttycf        ttysf        ttyyf
ptyba        ptyra        ptyxa        ttyd0        ttyt0        ttyz0
ptybb        ptyrb        ptyxb        ttyd1        ttyt1        ttyz1
ptybc        ptyrc        ptyxc        ttyd2        ttyt2        ttyz2
ptybd        ptyrd        ptyxd        ttyd3        ttyt3        ttyz3
ptybe        ptyre        ptyxe        ttyd4        ttyt4        ttyz4
ptybf        ptyrf        ptyxf        ttyd5        ttyt5        ttyz5
ptyc0        ptys0        ptyy0        ttyd6        ttyt6        ttyz6
ptyc1        ptys1        ptyy1        ttyd7        ttyt7        ttyz7
ptyc2        ptys2        ptyy2        ttyd8        ttyt8        ttyz8
ptyc3        ptys3        ptyy3        ttyd9        ttyt9        ttyz9
ptyc4        ptys4        ptyy4        ttyda        ttyta        ttyza
ptyc5        ptys5        ptyy5        ttydb        ttytb        ttyzb
ptyc6        ptys6        ptyy6        ttydc        ttytc        ttyzc
ptyc7        ptys7        ptyy7        ttydd        ttytd        ttyzd
ptyc8        ptys8        ptyy8        ttyde        ttyte        ttyze
ptyc9        ptys9        ptyy9        ttydf        ttytf        ttyzf
ptyca        ptysa        ptyya        ttye0        ttyu0        urandom
ptycb        ptysb        ptyyb        ttye1        ttyu1        v4l
ptycc        ptysc        ptyyc        ttye2        ttyu2        vc
ptycd        ptysd        ptyyd        ttye3        ttyu3        vcc
ptyce        ptyse        ptyye        ttye4        ttyu4        video0
ptycf        ptysf        ptyyf        ttye5        ttyu5        video2
ptyd0        ptyt0        ptyz0        ttye6        ttyu6        video3
ptyd1        ptyt1        ptyz1        ttye7        ttyu7        watchdog
ptyd2        ptyt2        ptyz2        ttye8        ttyu8        zero
ptyd3        ptyt3        ptyz3        ttye9        ttyu9

Thank you so much,

Jorge

I found one more thing here. When the system boots I get this message at the end:

CMEMK Error: CMEM phys_start (0x87400000) overlaps kernel (0x80000000 -> 0x8800)
insmod: cannot insert `cmemk.ko': Invalid parameters (-1): Invalid argument
Starting web server ...
 thttpd

MontaVista(R) Linux(R) Professional Edition 4.0.1 (0502020)

Thanks,

Jorge

Jorge said:

We have some software deseigned using the 1.30 version. Is there a chance on getting into compatibility issues?

In this case than staying with 1.30 is perfectly reasonable, there is certainly a possibility of compatibility issues with an application designed for 1.30 on 2.00, there would likely be some porting work involved.

Jorge said:

# ./loadmodules.sh
CMEMK Error: CMEM phys_start (0x87400000) overlaps kernel (0x80000000 -> 0x8800)
insmod: cannot insert `cmemk.ko': Invalid parameters (-1): Invalid argument

This is a problem right here, and would explain why your demos are failing, if CMEM does not get inserted into the kernel properly there will be no contiguous memory outside the kernel for the hardware accelerators to work with. What this error message is saying is that the CMEM is being inserted with arguments that tell it to use memory that is already in use by the kernel. This could mean two things, either the kernel is using too much memory, or the loadmodules.sh trying to insert CMEM with bad arguments.

My suspicion here is that the problem is the former, where the kernel is being configured to claim more memory than it should to work with the DVSDK demos. This configuration happens with the bootargs environment variable in U-Boot, I would guess that in that variable there is a mem= statement that is greater than 116M, which is making the kernel claim too much of the DDR.

To fix this you will want to verify your bootargs value in U-Boot, and likely set it to the value from the getting started guide (assuming you want to boot entirely from NAND).

setenv bootargs console=ttyS0,115200n8 ip=dhcp root=/dev/mtdblock3 rw rootfstype=yaffs2 mem=116M video=davincifb:vid0=720x576x16,2500K:vid1=720x576x16, 2500K:osd0=720x576x16,2025K davinci_enc_mngr.ch0_output=COMPOSITE davinci_enc_mngr.ch0_mode=$(videostd)

Solved. Thank you so much. I had a typo (missing "=" ) in the bootargs.

Jorge said:

Your were right on the first problem. The system attempts to bring up the ethernet ports two times before skipping. I only waited for on the first time I tried, but after the second the system is able to boot without the server.

If you want to speed things up and are not using ethernet, you can set 'ip=off' in your bootargs.