startup mechanism of SPC58NNx

[Long1]

With the MCU enable BAF and Core0 / 1 /2 reset vectors are place at 0xFC0008 / 0xFC0004 / 0xFC000C, my question is how the 3 reset vector be called during power on? just be called one by one? the reference manual doesn't give clearly description; this confused me a long time.

[Joe WILLIAMS]

Hi Long1

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

Regards

Joe

STMicro Support

[FSPIL]

Hi Long1,

The BAF code enables all the cores one by one in sequence.

Regards,

Francesco

[Giuseppe DI-GIORE]

The boot record starts with a 16-bit signature, then the second 16-bit is a bit-mask to tell to the BAF which cores to start.

Boot record example:

0xFC0000 .long 0x00A50003
0xFC0004 .long _reset_address2 /* Core 2 reset address. */
0xFC0008 .long _reset_address0 /* Core 0 reset address. */

The "3" (b'11) in the first word (word_0) indicates to the BAF to start core_2 and core_0 using as boot address what is stored in word 1 and word 2

Note: on SPC58, core_2 is the main core (which starts first), then core_0 start after, the last core starting si core_1 (in a three core device).