Alper Nebi Yasak
1265927ca3
Recently, gru boards were migrated to use common stack addresses with
U-Boot commit 5e7cd8a11995 ("rockchip: Use common bss and stack
addresses on RK3399") and commit 49f8131e5594 ("rockchip: rk3399-gru:
Use TPL with common bss and stack addresses"). This is done with the
ROCKCHIP_COMMON_STACK_ADDR config.
With POSITION_INDEPENDENT, INIT_SP_RELATIVE defaults to enabled as well.
However, ROCKCHIP_COMMON_STACK_ADDR selects HAS_CUSTOM_SYS_INIT_SP_ADDR,
which depends on INIT_SP_RELATIVE being disabled. So this results in a
configuration warning:
WARNING: unmet direct dependencies detected for HAS_CUSTOM_SYS_INIT_SP_ADDR
Depends on [n]: ARM [=y] && ARCH_KIRKWOOD [=n] || ARC [=n] || ARM [=y] && !INIT_SP_RELATIVE [=y] || MIPS [=n] || PPC [=n] || RISCV [=n]
Selected by [y]:
- ROCKCHIP_COMMON_STACK_ADDR [=y] && ARM [=y] && ARCH_ROCKCHIP [=y] && SPL_SHARES_INIT_SP_ADDR [=y]
I'm not sure if adhering to the Rockchip values means we can't be
position-independent. Disabling INIT_SP_RELATIVE still appears to keep
my kevin board working, so let's do that for now.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Libreboot
Documentation: libreboot.org
Support: #libreboot on
Libera IRC
Libreboot provides libre boot firmware on supported motherboards. It replaces proprietary vendor BIOS/UEFI implementations, by
- Using coreboot to initialize the hardware (e.g. memory controller, CPU, etc.) while minimizing unwanted functionality (e.g. backdoors such as the Intel Management Engine)
- ... which runs a payload such as SeaBIOS, GRUB, or U-Boot
- ... which loads your operating system's boot loader (BSD and Linux-based systems are supported).
Why use Libreboot, and what is coreboot?
A lot of users who use libre operating systems still use proprietary boot firmware, which often contain backdoors and bugs, hampering user freedom and right to repair.
coreboot provides libre boot firmware by initializing the hardware then running a payload. However, coreboot is notoriously difficult to configure and install for most non-technical users, requiring detailed technical knowledge of hardware.
Libreboot solves this by being a coreboot distribution (in the same way that Alpine Linux is a Linux distribution). It provides a fully automated build system that downloads and compiles pre-configured ROM images for supported motherboards, so end-users could easily fetch images to flash onto their devices.
Libreboot also produces documentation aimed at non-technical users and excellent user support via IRC.
Contribute
You can check bugs listed on the bug tracker.
You may use Codeberg pull requests to send patches with bug fixes or other improvements. This repository hosts the code for the main build system. The website lives in a separate repository.
Development is also done on the IRC channel.
License for this README
It's just a README file. It is released under Creative Commons Zero, version 1.0.