ARM BIOS issues

liujihouren

ARM BIOS issues [Copy link]

I recently bought an ARM board. The accompanying documentation said that the BIOS was burned into the chip when the board was shipped from the factory. Oh my god! I just now know that ARM also has BIOS... Question 1: Is the BIOS burned into FLASH? (My understanding of BIOS is a program. Its function is to initialize the peripherals connected to the CPU.) Question 2: When using FLASHPROGARM to download the program I wrote (such as the simplest LED flashing), if the program is stored from 0X00000000, then does this flush the BIOS? ? Is it correct to burn the simplest application program as above? (This experiment did not produce the result of LED flashing)

lnsbb2008

BIOS is an initial program in ARM. It is no different from the program you wrote for 51 or PIC. It just provides some functions for you to easily fix some programs into it!

fengpiao065

Bootloader

jacyko

Make some changes in the BIOS to copy the FLASH to SDRAM and run it

gxywin

It is very likely that you have flushed the bios using FLASHPROGARM.

didi111

Hey guys, what's the correct way to do it?

狂简

Use the download command in BIOS to download the program to SDRAM through the serial port, USB or network port and then run it. Note that the linker address must be set correctly.