Dose the ROM copy the IVT application to destination memory?

[tamotsu]

The ROM copy the IVT  "Initial Load Region" to destination memory.

IVT also includes Application.　Application also written in Dest. Memory of Image Vector Table in Figure 6-40.

But there isn not Application description.

[joanxie]

what processor and what Figure 6-40 are you talking about? pls share more detailed information

[tamotsu]

Thank you joanxie.

The processor is i.MX7D and page 1240 of Reference manual.

I think that up to DCD will be copied in ROM in the Initial Load Region, but i'm not sure about Application.

Is it OK to use the Dest.Memory address for the entry?

Thank you.

[joanxie · Accepted solution]

refer to the reference manual "The Initial 4 KB of program image must contain the IVT, DCD,
and the Boot Data Structures.", so the  ROM copy initial 4KB to the ram, this 4k data includes boot data structure, which determines the address application can be executed

[tamotsu]

Hello joanxie.

It means that ROM copies all 4KB of NOR flash up to CSF in Figure 6-40 to RAM.

Since the Application area is small, it should be used for the SPL that starts u-boot.

Thank you.