spear-09-h022 STMicroelectronics, spear-09-h022 Datasheet - Page 31

• Manufacturer Part Number: spear-09-h022
• Description: Spear Head Arm 926, 200k Customizable Easic Gates, Large Ip Portfolio Soc
• Manufacturer: STMicroelectronics

SPEAR-09-H022
7.1.2
Booting sequence
A simple initial description of the boot process is showed in the following steps:
1.
2.
3.
4.
Power on to fetch the RESET vector at 0x0000_0000 (from the aliased-copy of Serial
Flash).
Perform any critical CPU initialization at this time.
Load into the Program Counter (PC) the address of a routine that will be executed
directly from the non-aliased mapping of Serial Flash (0x9600_0000 + addr_of_routine)
and which main objectives are:
–
–
Returning from this routine will set the Program Counter back to DRAM.
un-map the aliased-copy of the Serial Flash (set REMAP = 1)
copy the program text and data into DRAM.
Power on sequence
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