On Wed, Jun 22, 2022 at 9:40 PM Saravana Kannan <sarava...@google.com> wrote:
> Actually, why isn't earlyconsole being used? That doesn't get blocked > on anything and the main point of that is to have console working from > really early on. For Arm (arch/arm) there is a special low-level debug option call low-level debug, which you find in e.g: arch/arm/Kconfig.debug arch/arm/kernel/debug.S This debug facility can print to the UART fifo before even MMU is up, pretty much from the first instruction the kernel executes. The versatility of LL-debug means that developers do not use earlyconsole much on Arm. I don't know about arm64 though. Yours, Linus Walleij _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
