Section 5.1.16 ("PCIEXBAR -- PCI Express Register Range Base Address") in
Intel document #316966-002 (already referenced near the top of this header
file) describes the Q35 DRAM Controller register that configures the
memory-mapped PCI config space (also known as MMCONFIG, and ECAM /
Enhanced Configuration Access Method).In this patch we add the macros we'll need later. We'll only support the 256 MB memory-mapped config space -- enough for buses [0, 255]. Cc: Gabriel Somlo <[email protected]> Cc: Gerd Hoffmann <[email protected]> Cc: Jordan Justen <[email protected]> Cc: Marcel Apfelbaum <[email protected]> Cc: Michał Zegan <[email protected]> Ref: https://github.com/tianocore/edk2/issues/32 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <[email protected]> Reviewed-by: Marcel Apfelbaum <[email protected]> Reviewed-by: Jordan Justen <[email protected]> --- OvmfPkg/Include/IndustryStandard/Q35MchIch9.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/OvmfPkg/Include/IndustryStandard/Q35MchIch9.h b/OvmfPkg/Include/IndustryStandard/Q35MchIch9.h index 18b34a3d4f4e..4dc2c39901c1 100644 --- a/OvmfPkg/Include/IndustryStandard/Q35MchIch9.h +++ b/OvmfPkg/Include/IndustryStandard/Q35MchIch9.h @@ -33,6 +33,14 @@ #define MCH_GGC 0x52 #define MCH_GGC_IVD BIT1 +#define MCH_PCIEXBAR_LOW 0x60 +#define MCH_PCIEXBAR_LOWMASK 0x0FFFFFFF +#define MCH_PCIEXBAR_BUS_FF 0 +#define MCH_PCIEXBAR_EN BIT0 + +#define MCH_PCIEXBAR_HIGH 0x64 +#define MCH_PCIEXBAR_HIGHMASK 0xFFFFFFF0 + #define MCH_SMRAM 0x9D #define MCH_SMRAM_D_LCK BIT4 #define MCH_SMRAM_G_SMRAME BIT3 -- 1.8.3.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
