009 Embedded Linux-ARM. StorageQueries and discussion related to usage of Linux on ARM based devices. Linux has been ported to a variety of CPUs which are not only primarily used as the processor of a desktop or server computer, but also ARM, AVR32, ETRAX CRIS, FR-V, H8300, IP7000, m68k, MIPS, mn10300, SuperH, and Xtensa processors, It is also used as an alternative to using a proprietary operating system and toolchain. » 009.04.Boot Loaders
009.04.91.39. Technical Deep Dive into Script Mechanics:
"In the 10_reset_boot_success script, how does the manipulation of the boot_success and boot_indeterminate environment variables influence the boot process? Please describe a scenario where changing these variables would alter the system's boot behavior."
a) Menu visibility control based on `boot_success` if[ "${boot_success}"="1" -o "${boot_indeterminate}"="1" ] then set menu_hide_ok=1 else set menu_hide_ok=0 fi
This code segment sets menu hiding for next boot based on the status of the last boot. ---- If `boot_success` is set to "1", it indicates that previous boot was successful, so that the boot menu could be hidden on next boot.
b) Resetting `boot_indeterminate` -
if[ "${boot_success}"="1" ] then set boot_indeterminate=0 elif[ "${boot_indeterminate}"="1" ] then set boot_indeterminate=2 fi
This code ensures that `boot_indeterminate` variable is reset appropriately.
c) Updating Environment Variables - set boot_success=0 save_env boot_success boot_indeterminate
