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| author | Gabe Black <gblack@eecs.umich.edu> | 2009-04-19 04:15:06 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-04-19 04:15:06 -0700 |
| commit | e174239bd8aa389fb39d8600b22dc1095a0dccf2 (patch) | |
| tree | 1bc0714eeafdcb11236f359c2d2b056314cd805b /src/dev/x86/pc.cc | |
| parent | 25e223c30fb97d98aa55ee21922883efa25a1ab5 (diff) | |
| download | gem5-e174239bd8aa389fb39d8600b22dc1095a0dccf2.tar.xz | |
X86: Mask the PIC at startup to avoid a glitch which causes an NMI.
Diffstat (limited to 'src/dev/x86/pc.cc')
| -rw-r--r-- | src/dev/x86/pc.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/dev/x86/pc.cc b/src/dev/x86/pc.cc index d1ab4af7f..7dc1d8711 100644 --- a/src/dev/x86/pc.cc +++ b/src/dev/x86/pc.cc @@ -107,6 +107,13 @@ Pc::init() entry.vector = 0x30; ioApic.writeReg(0x30, entry.bottomDW); ioApic.writeReg(0x31, entry.topDW); + + /* + * Mask the PICs. I'm presuming the BIOS/bootloader would have cleared + * these out and masked them before passing control to the OS. + */ + southBridge->pic1->maskAll(); + southBridge->pic2->maskAll(); } Tick |