M4 not working on secure

raveen — Thu, 18 May 2023 10:14:14 GMT

Hello,

I am facing an issue while trying to run my M4 firmware on the secure image of the imx7s platform. The M4 firmware utilizes OCRAM along with other memory sections, and I have included the memory section details below for reference:

MEMORY

{

VECTORS (RX) : ORIGIN = 0x1FFF8000, LENGTH = 0x00000240

TCM_L (RX) : ORIGIN = 0x1FFF8240, LENGTH = 0x00007DC0

TCM_H (RW) : ORIGIN = 0x20000000, LENGTH = 0x00008000

OCRAM (RW) : ORIGIN = 0x20201000, LENGTH = 0x0003F000

DDR_CODE (RX) : ORIGIN = 0x80000000, LENGTH = 0x00080000

DDR_DATA (RW) : ORIGIN = 0x80080000, LENGTH = 0x00080000

DDR_META (R ) : ORIGIN = 0x9ff00000, LENGTH = 0x00100000

}

and also M4 firmware using OCRAM from 0x00900000 to 0x00940000.

For your information, the M4 core is working fine in non-secure image.

Regards,

Raveen

Re: M4 not working on secure

Sanket_Parekh — Tue, 23 May 2023 04:59:52 GMT

Hi @raveen ,

I hope you are doing well.

Cortex-A7 maps OCRAM_128KB at 0090_0000 - 0091_FFFF in i.MX7S

OCRAM_128KB is used by HAB persistent memory (to store events, public keys and HAB process-related information.)

Please refer to 3 HAB persistent data in HABv4 RVT Guidelines and Recommendations

Thanks & Regards,

Sanket Parekh

topic Re: M4 not working on secure in i.MX Processors

M4 not working on secure

Re: M4 not working on secure