So, I am starting my foray into figuring out how to get the Boot Assist Flash to work.
Well, from what I understand, if the Boot Header is not found, the BAF will perform a Serial boot.
The Serial boot requires a BAF formatted file.
I figured out how to get the flash driver to work, which allowed me to erase the Boot header.
So, hopefully I am now in Serial boot mode. (Maybe S32 has some way to just erase the flash w/o programming?)
I figured out how to get an srec formatted file out of S32 Design Studio.
I noticed that addresses were not contiguous, so I checked a couple of ticks in S32 Design studio
That seemed to make the addresses contiguous.
Next, I chopped it up the .SREC file to leave just the code bytes.
I then added the Password, Load address, VLE bit and program byte length
as shown below.
///////// Original SREC Formatted File /////////////
S014000050524A5F4D504335373436422E73726563CD
S31501002C007068E00070E8E0001C6302841CE702843F
....
S70501000000F9
///////// BAF Formatted File /////////////
FEEDFACECAFEBEEF
01000000
8001D3D5
7068E00070E8E0001C6302841CE70284
....
0102431C01
I am using the EVB board, so the external xtal is 80 Mhz, which means I would need 96,000 baud.
I was able to just type in the baud rate on Tera Term VT so hopefully that works.
I tried sending a file or just sending the password and hope for some echo, but I don't see anything and I am wondering what, if anything, I am doing wrong.
I don't know if anybody else has tried this? I don't see any examples.
There's not too much discussion of BAF.
Hopefully I am headed in the right direction.
Thanks for your help.
