The EFI Graphics Output Protocol can return a 64-bit linear frame buffer address in some firmware/BIOS implementations. We currently only store the lower 32-bits in the lfb_base. This will eventually be passed to Linux kernel and the efifb driver will incorrectly interpret the framebuffer address as 32-bit address. The Linux kernel has already added support to handle 64-bit linear framebuffer address in the efifb driver since quite some time now. This patch adds the support for 64-bit linear frame buffer address in GRUB to address the above mentioned scenario. Signed-off-by: Arindam Nath <arindam.nath@amd.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'
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