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Yaboot

Repository	github.com/yaboot/yaboot/
Written in	C
Platform	PowerPC
Type	Bootloader
License	GPLv2
Website	yaboot.ozlabs.org

Yaboot (yet another boot loader) is a bootloader for PowerPC-based hardware running Linux.

History

In 2009, maintenance by Paul Nasrat was handed over to Tony Breeds.

Hardware support

Support includes the New World ROM Macintosh and IBM RS/6000 systems. It does not support the "OldWorld" PowerMacs.

Booting procedure

It is built to run within the Open Firmware layer common to most such systems instead of working as a Mac OS 9 program like its predecessor BootX.

Yaboot is similar to LILO and GNU GRUB. Yaboot uses the following steps to boot:

1. Yaboot is invoked by Open Firmware
2. Finds a boot device, boot path and opens boot partition
3. Opens /etc/yaboot.conf or a command shell
4. Loads image or kernel and initrd
5. Executes image

See also

• Comparison of boot loaders

References

1. "First Look at an Apple G4 with the Altivec Processor". Linux Journal. Retrieved 2021-03-26.
2. ^ "penguinppc.org - The New Home of PowerPC Linux". penguinppc.org. 2004-06-16. Archived from the original on 2004-06-16. Retrieved 2021-03-26.
3. ^ Rodriguez, Claudia Salzberg (2005). "8.2.3. PowerPC and Yaboot". The Linux Kernel primer : a top-down approach for X86 and PowerPC architectures. Gordon Fischer, Steven Smolski. Upper Saddle River, NJ: Prentice Hall Professional Technical Reference. ISBN 0-13-118163-7. OCLC 79872126.
4. Nasrat, Paul (24 May 2009). "Introducing new maintainer". Retrieved 2021-03-26.
5. "Encrypt Your Root Filesystem". Linux Journal. Retrieved 2021-03-26.

External links

• Official website
• Former official website on the Wayback Machine

v t e Firmware and booting
Processes	Windows 9x NT Linux Android
Booting firmware	Types Proprietary firmware Open-source firmware Custom firmware Interfaces UEFI BIOS Video BIOS Open Firmware ACPI MultiProcessor Specification APM Legacy Plug and Play AlphaBIOS SRM SFI Implementations SeaBIOS Award BIOS American Megatrends AMIBIOS AMI Aptio InsydeH2O Phoenix SecureCore UEFI TianoCore EDK II OpenBIOS Coreboot Libreboot LinuxBoot Kickstart Run-Time Abstraction Services
Hybrid firmware bootloader	Common Firmware Environment Das U-Boot ARCS
Bootloaders	Bootloader unlocking Comparison of bootloaders Implementations Acronis OS Selector Barebox BootManager BootX (Apple) BootX (Linux) GNU GRUB iBoot systemd-boot loadlin NTLDR OpeniBoot RedBoot rEFInd rEFIt SYSLINUX Windows Boot Manager xOSL Yaboot Plop Boot Manager MILO
Partition layouts	GUID Partition Table Master boot record Apple Partition Map
Partitions	EFI system partition BIOS boot partition /boot/
Utilities	Software flashrom fwupd UEFITool Odin Heimdall Hardware Bus Pirate Raspberry Pi ft2232
Network boot	Preboot Execution Environment gPXE iPXE NetBoot Remote Initial Program Load Wake-on-LAN Wake-on-ring
ROM variants	ROM PROM EPROM EEPROM
Related	Boot ROM ROM hacking ROM image Execute in place Devicetree Fastboot Instant-on Power-on self-test EDL mode

• Free boot loaders