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mike.travis@hpe.com 77dd0afe57 efi/uga: Fix PCIe LER when GRUB2 accesses non-enabled MMIO data from VGA 
A GPU inserted into a PCIe I/O slot disappears during system startup.
The problem centers around GRUB and a specific VGA init function in
efi_uga.c. This causes an LER (Link Error Recorvery) because the MMIO
memory has not been enabled before attempting access.

The fix is to add the same coding used in other VGA drivers, specifically
to add a check to insure that it is indeed a VGA controller. And then
enable the MMIO address space with the specific bits.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-09-21 12:16:25 -04:00
..
boot sparc64: Close cdboot ihandle 2020-09-21 11:32:45 -04:00
bus ehci: Fix compilation on i386 2020-09-21 11:32:45 -04:00
commands i386: make struct linux_kernel_header architecture specific 2020-09-21 12:16:25 -04:00
disk ahci: Improve error handling 2020-09-21 12:16:25 -04:00
efiemu x86-64: Treat R_X86_64_PLT32 as R_X86_64_PC32 2019-10-24 16:59:37 +02:00
font Document intentional fallthroughs. 2015-01-27 17:17:58 +01:00
fs xfs: Don't attempt to iterate over empty directory. 2020-09-21 12:02:37 -04:00
gdb i386, x86_64, ppc: fix switch fallthrough cases with GCC7 2017-04-04 19:23:55 +03:00
gettext * grub-core/gettext/gettext.c (main_context), (secondary_context): 2013-11-07 01:01:47 +01:00
gfxmenu gfxmenu: fix memory leak 2016-01-12 21:52:50 +03:00
gnulib i386, x86_64, ppc: fix switch fallthrough cases with GCC7 2017-04-04 19:23:55 +03:00
hello * grub-core/commands/gptsync.c: Fix typographic quoting. 2012-03-03 13:05:08 +01:00
hook * grub-core/hook/datehook.c (grub_read_hook_datetime): Small stylistic 2011-11-11 21:03:49 +01:00
io gzio: fix unaligned access 2020-09-21 12:02:37 -04:00
kern ieee1275: NULL pointer dereference in grub_machine_get_bootlocation() 2020-09-21 12:16:25 -04:00
lib libgcrypt: Import replacement CRC operations 2020-09-21 12:16:25 -04:00
loader chainloader: patch in BPB's sectors_per_track and num_heads 2020-09-21 12:16:25 -04:00
mmap Translate UEFI persistent memory type 2015-12-15 10:25:34 +03:00
net Add Virtual LAN support. 2020-09-21 11:32:45 -04:00
normal core: use GRUB_TERM_ definitions when handling term characters 2020-09-21 12:02:37 -04:00
osdep sparc64: Limit nvme of_path_of_nvme to just SPARC 2020-09-21 12:16:25 -04:00
partmap disk/ldm, partmap/msdos.c: fix spelling error 2015-08-22 21:22:41 +02:00
parttool * grub-core/net/http.c: Add TRANSLATORS comments. 2012-03-05 16:42:26 +01:00
script yylex: Explicilty cast fprintf to void. 2020-09-21 12:02:37 -04:00
term core: use GRUB_TERM_ definitions when handling term characters 2020-09-21 12:02:37 -04:00
tests Regenerate checksum.h with newer unifont. 2020-09-21 12:02:37 -04:00
video efi/uga: Fix PCIe LER when GRUB2 accesses non-enabled MMIO data from VGA 2020-09-21 12:16:25 -04:00
gdb_grub.in * grub-core/gdb_grub.in: Fix overflow and wrong field. 2013-10-14 03:40:20 +02:00
genemuinit.sh use MODULE_FILES for genemuinit* instead of MOD_FILES 2014-01-18 23:15:40 +04:00
genemuinitheader.sh use MODULE_FILES for genemuinit* instead of MOD_FILES 2014-01-18 23:15:40 +04:00
genmod.sh.in .mod files: Strip annobin annotations and .eh_frame, and their relocations 2020-09-21 12:16:25 -04:00
genmoddep.awk enforcing fixup 2020-09-21 12:02:37 -04:00
gensyminfo.sh.in Fix shebang for termux. 2020-09-21 11:32:45 -04:00
gensymlist.sh Make 'make check' work on emu. 2013-04-27 02:00:16 +02:00
gentrigtables.c * grub-core/gentrigtables.c: Make tables const. 2013-03-01 11:15:09 +01:00
gmodule.pl.in * grub-core/gmodule.pl.in: Accept newer binutils which output 2014-09-21 18:23:23 +02:00
gnulib-fix-gcc7-fallthrough.diff Add gnulib-fix-gcc7-fallthrough.diff 2017-04-04 19:37:47 +03:00
gnulib-fix-null-deref.diff Import new gnulib. 2013-04-11 21:12:46 +02:00
gnulib-fix-width.diff Import new gnulib. 2013-04-11 21:12:46 +02:00
gnulib-no-abort.diff Import new gnulib. 2013-04-11 21:12:46 +02:00
gnulib-no-gets.diff Import new gnulib. 2013-04-11 21:12:46 +02:00
Makefile.am arm_coreboot: Support DMA. 2020-09-21 11:32:45 -04:00
Makefile.core.def efi: Move grub_reboot() into kernel 2020-09-21 12:02:37 -04:00
modinfo.sh.in Fix shebang for termux. 2020-09-21 11:32:45 -04:00