Hi Everyone,
Sinced a few days I noticed some problems writing the uimage to a FAT partition on my SD-card. At first I was afraid of some (physical) SD-card problems, but it appears to be related to he size of the uImage. With some further testing (and adding some debug printing), I could easily reproduce the problem:
//4K file, result OK fatwrite mmc 0:1 42000000 testfile 1000 writing testfile set_cluster; clustnum: 5, startsect: 176, size 2048 set_cluster; clustnum: 6, startsect: 180, size 2048 set_cluster; clustnum: -6, startsect: 132, size 2048 4096 bytes written
//512 bytes file, timeout error, file not written fatwrite mmc 0:1 42000000 testfile 200 writing testfile set_cluster; clustnum: 5, startsect: 176, size 0 MMC0: Bus busy timeout! MMC0: Bus busy timeout! MMC0: Bus busy timeout! MMC0: Bus busy timeout! MMC0: Bus busy timeout! MMC0: Bus busy timeout! set_cluster; clustnum: 5, startsect: 176, size 512 MMC0: Bus busy timeout! MMC0: Bus busy timeout! MMC0: Bus busy timeout! set_cluster; clustnum: -6, startsect: 132, size 2048 MMC0: Bus busy timeout! 512 bytes written
It seems to be related to he problem reported here:
http://www.mail-archive.com/u-boot@lists.denx.de/msg107212.html
Once the size of the set_cluster call equals 0, the mmc command is incomplete and times out. In the earlier reported problem, a patch is mentioned, but not available for dowload here. Also in the latest versions of the git repository I could not find a patch for this problem. Can anyone tell me if there is a fix for this problem?
Regards,
Ruud