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Altera_Forum's avatar
Altera_Forum
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11 years ago

How to use M25P32 ?

Hi guys, I want to use M25P32 in my design for its low cost. But unfortunately, it can't be recognized by Quartus programmer. It also can't be opened with the function "alt_flash_open_dev". ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Finally, I have found a way, and it is so simple. I just track the boot process step by step, and find alt_epcs_flash_query() function. I just add the following code, and the M25P32 can be accessed.

else if (flash->silicon_id == 0x15) /* EPCS32 */

{

flash->dev.region_info[0].region_size = 32 * 1024 * 1024 / 8;

flash->dev.region_info[0].number_of_blocks = 64;

flash->dev.region_info[0].block_size = 65536;

}

Hope it will help others. Thanks again for Stuart and Alex. You make me solve this issue so quickly.

Derek