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Altera_Forum
Honored Contributor
Honored Contributorkernel not booting
Hello eCos community, I have been working with a design for some time that is hosted on a NiosII development board (Stratix edition). I have had problems with eCos booting and really need to ge...
Altera_ForumHonored Contributor
Honored ContributorI have been further developing my eCos based compact flash card application on the stratix dev board and thought I had achieved stable code both for debugging (run from Ram) and run from flash operation.
Along the way I found that CF cards can behave in different ways, for example when debugging (optimisation -O0) only one of my CF cards will mount (the el-cheapo Samsung one). When running from flash with -O3, all my cards will mount. Might be a timming issue, as I guess the -O0 code executes slower. Also, as Stefan Levie has pointed out in this forum, do not attempt to access hardware directly, use the HAL IO macros such as IOWR and IORD. However, I still get strange behaviour from one stratix dev board that on occassion will not boot eCos while another board will. One time I found when eCos would not boot on the bad board, after waiting a while and loading the same code again, and it ran just fine. I think I may have a intermittently bad board - time to order another one. Peter
