topic Re: CSEC GenerateMACAddrMode address range in S32K

CSEC GenerateMACAddrMode address range

SaLan — Fri, 26 Dec 2025 07:05:27 GMT

Merry Christmas

When I was using the GenerateMACAddrMode function of CSEC.When the address value exceeds 0x7DFFF, an error will occur. Is this normal?

SaLan — Fri, 26 Dec 2025 08:40:00 GMT

My fault

I means can't out of 512kb
CSEC_DRV_GenerateMACAddrMode(CSEC_RAM_KEY, (uint8_t *)0x0007FFFC, 0x00000080, (uint8_t *)cmacout);

but i use addr = 0x0007FFFC, len = 0x00000080

also no error,but out of range

lukaszadrapa — Tue, 30 Dec 2025 18:20:09 GMT

It's a limitation of the CMD_GENERATE_MAC command in Addr mode (also called pointer method):

The partition (i.e. block size) can be 128KB, 256KB or 512KB depending on derivative:

Regards,

Lukas