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Altera_Forum's avatar
Altera_Forum
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14 years ago

Flash Access Problems

We have a 3 processor design that all boot successfully from a single CFI flash (all reset addresses are set to our CFI Flash at different addresses). The firmwares run in different On Board Memories...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

The flash should be initialized if the following is true.

# if (!defined(ALT_EXCLUDE_CFI_FLASH) && ((!defined(ALT_USE_SMALL_DRIVERS) && !defined(ALT_SIM_OPTIMIZE)) || defined(ALT_USE_CFI_FLASH)))

The easy way to ensure this is to just define ALT_USE_CFI_FLASH. In the BSP Properties under NIOS II BSP Properties add "-DALT_USE_CFI_FLASH" (without quotes) to Defined Symbols.

I have problems when I have two BSPs for the same processor, but I am sure that is different than your situation.

There is a global device list that should be filled out when alt_main() executes. Watch the global alt_flash_dev_list as you step through alt_main().

Since you are using three processors and I will be in the future, I have a question for you. I have seen some people saying that they cannot debug three processors at once, have you experienced this problem?