S3C2410 (ARM9) startup method-EEWORLD

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1. Nand Flash boot

In order to boot from Nand Flash, S3C2410 is configured with a 4KB internal SRAM buffer called Steppingstone. When the system is configured to boot from Nand Flash (configuration is set by hardware engineers on the circuit board), the Nand Flash controller will automatically load the first 4KB code of Nand Flash into the internal RAM (Steppingstone), and set the 0x0 address as the starting address of the internal RAM (memory mapping), and then the CPU starts to boot from the 0x0 address of the internal RAM. This process does not require program intervention. Usually the first 4KB code of nand flash will copy the CPU startup initialization code in nand flash to SDRAM, and then jump to SDRAM to start execution. So what the programmer needs to do is to put the most core startup code in the first 4KB of Nand Flash.

2. NOR Flash boot

When booting from NOR Flash, the system will directly start executing code from address 0 of NOR Flash.

Keywords：S3C2410 ARM9 Reference address：S3C2410 (ARM9) startup method

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