[OpenWrt Wiki] The Bootloader
openwrt.org › docs › techrefJul 10, 2021 · The Bootloader The Bootloader is a piece of software that is executed every time the hardware device is powered up. It is executable machine code and thus ARCH-specific. It's quite heavily device-specific because its main task is to initialize all the low-level hardware details. The bootloader can be contained on a separate
[OpenWrt Wiki] The Boot Process
openwrt.org › docs › techrefDec 09, 2021 · Example from the openwrt-x86-ext2-image.kernel file entry for normal boot: “kernel /boot/vmlinuz root=/dev/hda2 init=/etc/preinit [rest of options]” This entry in the boot/grub/menu.lst file tells grub that the kernel is located under the /boot directory and the filename is vmlinuz.
[OpenWrt Wiki] Preinit and Root Mount and Firstboot Scripts
openwrt.org › docs › techrefDec 09, 2021 · Abstract. This document presents the preinit / firstboot boot sequence. The boot system is extensible via (new) packages such as rootfs on usb, or enhanced failsafe. We describe the portion of the OpenWrt boot sequence that occurs before the 'init' program is executed (when booting in multiuser mode), as well as the script that is responsible ...
[OpenWrt Wiki] Boot/Init Requirements
openwrt.org › docs › techrefFeb 20, 2018 · Boot/Init Requirements. This article attempts to state what the initscripts must and should do for the new init system being developed for OpenWrt. The goal is to deal with the race conditions that currently can occur, without losing current functionality.
[OpenWrt Wiki] The Boot Process
https://openwrt.org/docs/techref/process.boot09.12.2021 · The Boot Process As noted below, this page is woefully out of date Please also see requirements.boot.process This guide it not up-to-date! It does not mention procd This guide shall help you understand, e.g. * When is it time for kexec and when for extroot_configuration (see particularly extroot.theory)? * How does the
[OpenWrt Wiki] The Bootloader
https://openwrt.org/docs/techref/bootloader10.07.2021 · It's not. A bootloader is not required to boot Linux. The use of one (or several) bootloaders in a row to chainload (or bootstrap) a Kernel is not a categorical necessity, it is merely a very crafty method to start an operating system.The main advantage for OpenWrt is, that the existence of a bootloader offers users and developers additional possibilities to debrick a …