On a system running Linux, can I use the ALT_WRITE_WORD / ALT_READ_WORD API functions described in socal.h of SoC EDS to read/write registers implemented in the FPGA part?

No. The API functions in
socal.h do not allow direct access. The entities of these functions are just pointer access.

Example:
#define alt_read_word(src) (*ALT_CAST(volatile uint32_t *, (src)))

On Linux, the address is virtual address by MMU (Memory Management Unit), so you have to use mmap() function to get the physical address to access it.

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Category: SoC
Tools: SoC EDS
Device: -