go-boot v1.6.1

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel can be executed as:

• EFI application by an existing loader (e.g. UEFI shell, systemd-boot)
• EFI boot entry
• QEMU plain or confidential KVM
• Google Compute Engine plain or confidential KVM

Documentation can be found in the README.

This release features the following performance and reliability improvements:

• bumped minimum Go version to 1.26.1, following tamago-go1.26.1 to reduce size of unikernel binaries (9db02a6)

Full Changelog: v1.6...v1.6.1

go-boot v1.6

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel can be executed as:

• EFI application by an existing loader (e.g. UEFI shell, systemd-boot)
• EFI boot entry
• QEMU plain or confidential KVM
• Google Compute Engine plain or confidential KVM

Documentation can be found in the README.

This release features the following performance and reliability improvements:

• cmd: show logs on SSH connections (2c64f1a)
• Makefile: add go tool tamago support (59f995e)
• Makefile: align ELF conversion for binutils 2.46 (7ebff40)
• bumped minimum Go version to 1.26.0, following tamago-go1.26.0 (f6dde5a)

Full Changelog: v1.5.1...v1.6

go-boot v1.5.1

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel can be executed as:

• EFI application by an existing loader (e.g. UEFI shell, systemd-boot)
• EFI boot entry
• QEMU plain or confidential KVM
• Google Compute Engine plain or confidential KVM

Documentation can be found in the README.

This release features the following performance and reliability improvements:

• cmd: cache AMD SEV-SNP secrets
• main: disable watchdog as early as possible (cddc6ec)
• uefi: adjust keystroke delay to prevent runtime starvation (55e0707)

Full Changelog: v1.5...v1.5.1

go-boot v1.5

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel can be executed as:

• EFI application by an existing loader (e.g. UEFI shell, systemd-boot)
• EFI boot entry
• QEMU plain or confidential KVM
• Google Compute Engine plain or confidential KVM

Documentation can be found in the README.

Major changes:

• cmd: added sev-kdf, commands for AMD SEV-SNP key derivation (1745d18)
• cmd: reduce OVMF page re-use for AMD SEV-SNP operations (bbcc457, 2e1b84c)
• Makefile: added qemu-snp target for Confidential VM launch under AMD SEV-SNP (92982ac)
• uefi/x64: update to usbarmory/tamago@00899b0 to fix frequency detection on AMD CPUs (ad0f71c)

Full Changelog: v1.4...v1.5

go-boot v1.4

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes:

• cmd: added sev, sev-report commands for AMD SEV-SNP information and attestation (#7)
• cmd: added msr command for model-specific register access (#7)
• cmd: bundle TLS roots for any potential TLS client request (c1ebcc7)
• uefi: (*SystemTable).LocateConfiguration new function to locate configuration tables (#7)
• uefi: (*Services).GetSNPConfiguration new function to support AMD SEV-SNP configuration (#7)
• uefi: (*SimpleNetwork).Transmit fix infinite loop condition on EFI_NOT_READY status (#8)
• uefi: adopt fs.ValidPath requirements for UEFI fs.FS implementation (#9)
• uefi/x64: set flow control signals in UART0 for Google Compute Engine compatibility (edec516)
• bumped minimum Go version to 1.25.6, following tamago-go1.25.6

Full Changelog: v1.3...v1.4

go-boot v1.3

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes (thanks to Christian Grönke):

• cmd - add efivar command for EFI variable display (#4)
• uefi - improved GUID type, added ParseGUID, MustParseGUID functions (#4)
• uefi - new (*RuntimeServices).GetVariable, (*RuntimServices).GetNextVariable functions (#4)

Additional changes:

• shell - (*Interface).Pagination disables frame buffer scrolling to improve console speed (#5)
• uefi - new (*Console).GetMode, (*Console).QueryMode functions (0f6e7fe)
• uefi - new (*Console).EnableCursor function, enable console cursor (8f4a40b)
• bumped minimum Go version to 1.25.4, following tamago-go1.25.4

Documentation changes:

• README - added section on Cloud deployments

Full Changelog: v1.2.1...v1.3

go-boot v1.2.1

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes:

• Makefile - OVMFVARS build variable is now optional (af3b0d0)
• shell - bump dependencies to fix scheduler starvation with CONSOLE=com1 due to a tamago issue (c7e22ff)
• uefi/x64 - add AllocateDMA() function for initialization of global DMA area (#2)

Full Changelog: v1.1...v1.2.1

go-boot v1.1

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes:

• uefi - add EFI Simple Network Protocol support
• cmd - add net, dns commands for UEFI networking configuration
• cmd - fix lspci command which was shadowed by ls invalid pattern match (11d2684)
• Makefile - add NET build variable to enable net command
• Makefile - add DEBUG build variable to enable stastviz when NET is enabled
• bumped minimum Go version to 1.25.2, following tamago-go1.25.2

Internal changes:

• uefi - assign separate stack for UEFI function calls (8a0eb93)
• uefi/x64, uefi - disable interrupts to avoid UEFI boot services interference (e7e8365)
• uefi/x64 - disable CPU idle time management (4046e29)

Full Changelog: v1.0...v1.1

go-boot v1.0

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes:

• bumped minimum Go version to 1.25.1, following tamago-go1.25.1
• cmd - add ls command

Full Changelog: v0.9...v1.0

go-boot v0.9

This is a release of the go-boot unikernel which implements a UEFI Shell and OS loader for AMD64 platforms, implemented as a bare metal Go unikernel using the TamaGo framework.

The unikernel is an UEFI application which can be executed under an existing loader (e.g. UEFI shell, systemd-boot) or as an EFI boot entry.

Documentation can be found in the README.

Major changes:

• bumped minimum Go version to 1.25.0, following tamago-go1.25.0
• cmd - add . shortcut with default EFI image path
• Makefile - allow . shortcut EFI image path override via DEFAULT_EFI_ENTRY variable

Full Changelog: v0.8...v0.9