MSP430FR2153: MSP430FR235x datasheet doesn't show the BSL ROM address in the Memory Organisation

Chester Gillon

Part Number: MSP430FR2153
Other Parts Discussed in Thread: MSP430FR5969

Looking at the MSP430FR235x datasheet noticed that the Memory Organisation table doesn't show the addresses of the BSL ROM:

According to the MSP430™ FRAM Devices Bootloader (BSL) FR235x devices the BSL size totals 3KB at address 0x1000 to 0x17FF for the first 2KB and 0xFFC00 to 0xFFFFF for the remaining 1KB.

over 3 years ago

0 David Schultz over 3 years ago

Guru 18885 points

I am not sure what good knowing those addresses would do you. The BSL ROM is not really readable as a quick test on a FR5969 showed:

1000 80 DUMP
1000   9 3C 12 3C FF 3F FF 3F FF 3F FF 3F FF 
MSP430eForth  v2.2

Instead of dumping a bunch of that memory I got a device reset for my trouble.

0 Chester Gillon over 3 years ago in reply to David Schultz

Guru 92251 points

David Schultz36 said:
Instead of dumping a bunch of that memory I got a device reset for my trouble.

The reset is due to a security violation on attempting to access some BSL ROM addresses. I have only really being investigating what happens when the BSL ROM addresses are read due to CCS/MSP-EXP430FR5969: If the CCS debugger accesses an area of the ROM BSL in a MSP430 FRAM device which is protected, the debugged program fails

Interestingly, not all FRAM devices seem to generate a security violation when the BSL ROM addresses are read. https://github.com/Chester-Gillon/E2E_example_projects/blob/master/MSP430_find_bsl_accessible_addresses/notes.txt is result of 'probing' addresses from the end of peripheral space up to the end of the 20-bit address space on some FRAM devices to see which range of addresses generated a security violation reset when read.

On MSP430FR5969:

Addresses from 0x01010 ... 0x017FF which are in the BSL ROM generate a security violation.
Addresses from 0x01B08 ... 0x01BFF also generate a security violation, but from the datasheet not sure what those addresses are for.

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MSP430FR2153: MSP430FR235x datasheet doesn't show the BSL ROM address in the Memory Organisation