<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Hi Harald,<br><br>>Please see my other e-mail response about this. I still believe there<br>>might be some wrong memory / bus / core clock timing and or voltage<br>>issues. <br><br>We changed the memory clock to a lower frequency(90MHz to 67MHz) and the the "Bad Data CRC" error has gone. Thanks alot.<br>Our settings are: EXTCLK = 12MHz<br> FCLK = 271 MHz<br> HCLK = 67..75
MHz<br><br>>please try to use u-boot's built-in memory verification code to<br>>veryify your memory before trying to boot a kernel on it.<br>We will do this now.<br><br>We are writing the kernel image directly to the ram to 33000000. Therefore as for now it is not copied from the flash.<br><br>>Is the hardware a prototype of a new board, or is it proven, verified<br>>hardware? <br>Yes, the hardware is a new prototype.<br><br>The output now is as follows:<br><br>U-Boot 1.3.2 (Apr 7 2008 - 17:25:31)<br><br>DRAM: 128 MB<br>Flash: 32 MB<br>Using default environment<br><br>In: serial<br>Out: serial<br>Err: serial<br>Hit any key to stop autoboot: 0<br>## Booting image at 33000000 ...<br> Image Name: Linux kernel<br> Image Type: ARM Linux Kernel Image (gzip compressed)<br> Data Size: 4278410 Bytes = 4.1
MB<br> Load Address: 30008000<br> Entry Point: 30008000<br> Verifying Checksum ... OK<br> Uncompressing Kernel Image ... OK<br><br>Starting kernel ...<br><br>undefined instruction<br>pc : [<30008018>] lr : [<310117bc>]<br>sp : 30fcfa78 ip : 30fcffb8 fp : 00000000<br>r10: 00000001 r9 : 30fcfe18 r8 : 30fcffdc<br>r7 : 31012ef4 r6 : 33000040 r5 : 31019514 r4 : 31019511<br>r3 : 30008000 r2 : 30000100 r1 : 0000016a r0 : 00000000<br>Flags: nzCv IRQs off FIQs off Mode SVC_32<br>Resetting CPU ...<br><br><br>U-Boot 1.3.2 (Apr 7 2008 - 17:25:31)<br><br>DRAM: 128 MB<br>Flash: 32 MB<br>Using default environment<br><br>In: serial<br>Out:
serial<br>Err: serial<br>Hit any key to stop autoboot: 0<br>## Booting image at 33000000 ...<br> Image Name: Linux kernel<br> Image Type: ARM Linux Kernel Image (gzip compressed)<br> Data Size: 4278410 Bytes = 4.1 MB<br> Load Address: 30008000<br> Entry Point: 30008000<br> Verifying Checksum ... OK<br> Uncompressing Kernel Image ... OK<br><br>Starting kernel ...<br><br>undefined instruction<br>pc : [<30008018>] lr : [<310117bc>]<br>sp : 30fcfa78 ip : 30fcffb8 fp : 00000000<br>r10: 00000001 r9 : 30fcfe18 r8 : 30fcffdc<br>r7 : 31012ef4 r6 : 33000040 r5 : 31019514 r4 : 31019511<br>r3 : 30008000 r2 : 30000100 r1 :
0000016a r0 : 00000000<br>Flags: nzCv IRQs off FIQs off Mode SVC_32<br>Resetting CPU ...<br><br>and it keeps on resetting. We further reduced the SDRAM frequency to 45 Mhz, but still the problem persist. Is it still the problem with the u-boot frequency or with the linux kernel?<br><br>Thanks again.<br>Tiju<br></div><br></div></div><br>
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