[haiku-commits] Re: BRANCH jessicah-github.uefi-mmu-fix [d7ff3334445d] src/system/boot/platform/efi

  • From: Fredrik Holmqvist <fredrik.holmqvist@xxxxxxxxx>
  • To: haiku-commits@xxxxxxxxxxxxx
  • Date: Sun, 08 Jan 2017 08:21:55 +0000

Victory!

I just booted my laptop and the ordinary Haiku disk using UEFI with this
change. So getting UEFI booting on my hard-drive is no longer on my
TODO-list.
This needs to be merged..


/Fredrik Holmqvist, TQH

sön 8 jan. 2017 kl 08:01 skrev jessicah-github.uefi-mmu-fix <
community@xxxxxxxxxxxx>:

added 1 changeset to branch 'refs/remotes/jessicah-github/uefi-mmu-fix'
old head: 0000000000000000000000000000000000000000
new head: d7ff3334445dbd75ec53778321eb94309c842722
overview: https://github.com/jessicah/haiku/compare/d7ff3334445d


----------------------------------------------------------------------------

d7ff3334445d: UEFI: leave runtime memory identity mapped.

  * We don't have kernel/userspace access to UEFI at this point
    either, and with some firmware, if we don't keep the
    runtime memory identity mapped, then the loader dies. This
    will fix booting on such machines, and shouldn't have any
    impact on already working machines.

                         [ Jessica Hamilton <jessica.l.hamilton@xxxxxxxxx>
]


----------------------------------------------------------------------------

Commit:      d7ff3334445dbd75ec53778321eb94309c842722
Author:      Jessica Hamilton <jessica.l.hamilton@xxxxxxxxx>
Date:        Sun Jan  8 19:33:08 2017 UTC


----------------------------------------------------------------------------

1 file changed, 1 insertion(+), 1 deletion(-)
src/system/boot/platform/efi/mmu.cpp | 2 +-


----------------------------------------------------------------------------

diff --git a/src/system/boot/platform/efi/mmu.cpp
b/src/system/boot/platform/efi/mmu.cpp
index 3567a2e..d3057c3 100644
--- a/src/system/boot/platform/efi/mmu.cpp
+++ b/src/system/boot/platform/efi/mmu.cpp
@@ -183,7 +183,7 @@ mmu_post_efi_setup(UINTN memory_map_size,
EFI_MEMORY_DESCRIPTOR *memory_map, UIN
                        break;
                case EfiRuntimeServicesCode:
                case EfiRuntimeServicesData:
-                       entry->VirtualStart = entry->PhysicalStart +
0xFFFFFF0000000000ull;
+                       entry->VirtualStart = entry->PhysicalStart;
                        break;
                }
        }



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