mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2025-12-27 18:25:05 +00:00
240766af02
Issue observed: Coreboot stops at: "Not enough MTRRs available!" Test system: * Gigabyte GA-B75M-D3H * Intel Pentium CPU G2130 * ATI Radeon HD4780 Problem description: In case the IGD does not claim VGA decode, the code path taken results in an integer overflow as uma_memory_base isn't initialized. The MTRR assignment will fail, because of invalid memory regions. Problem solution: Properly initialize uma_memory_base to prevent possible integer overflow. Final testing results: The system boots again with IGD not claiming VGA decode. Change-Id: I025be23b1defb6155469a3eee66569e49a695e7f Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: http://review.coreboot.org/11918 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de>