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Altera_Forum's avatar
Altera_Forum
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12 years ago

Application jump to Bootloader

Hi, I need some help with triggering an application restart from bootloader. In my system I have an on-chip RAM (where bootloader resides) and an SRAM where application will be running. T...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Altera named our boot-stages as BootROM, Preloader, U-boot or RTOS or Baremetal on 3th stage.

What you mean by "custom bootloader" ? And why mentioned Nios ?

Usually 64K of onchip RAM is visible from 0 adress also, although he located on FFFF0000.

However, some time I see BootROM on 0th disassembly and steped to it in DS-5 -- remapping may be used. If fill Custom Preloader with "while (1) ;" to flash and repower board, may connect to this endless cycle and continue running through changing PC...

If application calls pure function pointer, then will be reboot of system. If to 0 mapped BootROM, will be full reboot.