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authorNico Huber <nico.h@gmx.de>2017-09-19 09:36:03 +0200
committerMartin Roth <martinroth@google.com>2018-04-05 15:52:45 +0000
commit2afe4dc075fd2cab8d362aa026066a5f53663f2c (patch)
treeb59930db3e2403c531697dbdccb87bdec1ee77e4 /src/soc/intel/skylake/include
parentdb06cf0576192dca4ae4cdb185d311baffc4669c (diff)
soc/intel/skylake: Enable VT-d and X2APIC
We use the usual static addresses 0xfed90000/0xfed91000 for the GFX IOMMU and the general IOMMU respectively. These addresses have to be configured in MCHBAR registers (maybe, who knows, the blob is undocu- mented), advertised to FSP and reserved from the OS. The new devicetree option `ignore_vtd` allows to retain the old beha- viour (do whatever pre-set UPD values suggest). We also let FSP set up distinct BDFs for messages originating from the I/O-APIC and the HPET. Change-Id: I77f87c385736615c127143760bbd144f97986b37 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/21597 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Diffstat (limited to 'src/soc/intel/skylake/include')
-rw-r--r--src/soc/intel/skylake/include/soc/iomap.h6
-rw-r--r--src/soc/intel/skylake/include/soc/systemagent.h11
2 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/include/soc/iomap.h b/src/soc/intel/skylake/include/soc/iomap.h
index ac0c78b3c0..37d1d6b270 100644
--- a/src/soc/intel/skylake/include/soc/iomap.h
+++ b/src/soc/intel/skylake/include/soc/iomap.h
@@ -49,6 +49,12 @@
#define GDXC_BASE_ADDRESS 0xfed84000
#define GDXC_BASE_SIZE 0x1000
+#define GFXVT_BASE_ADDRESS 0xfed90000
+#define GFXVT_BASE_SIZE 0x1000
+
+#define VTVC0_BASE_ADDRESS 0xfed91000
+#define VTVC0_BASE_SIZE 0x1000
+
#define HPET_BASE_ADDRESS 0xfed00000
#define PCH_PWRM_BASE_ADDRESS 0xfe000000
diff --git a/src/soc/intel/skylake/include/soc/systemagent.h b/src/soc/intel/skylake/include/soc/systemagent.h
index d8192a3e75..8e53f54b75 100644
--- a/src/soc/intel/skylake/include/soc/systemagent.h
+++ b/src/soc/intel/skylake/include/soc/systemagent.h
@@ -32,9 +32,13 @@
#define D_LCK (1 << 4)
#define G_SMRAME (1 << 3)
#define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))
+#define CAPID0_A 0xe4
+#define VTD_DISABLE (1 << 23)
#define BIOS_RESET_CPL 0x5da8
+#define GFXVTBAR 0x5400
#define EDRAMBAR 0x5408
+#define VTVC0BAR 0x5410
#define GDXCBAR 0x5420
#define MCH_PKG_POWER_LIMIT_LO 0x59a0
@@ -42,4 +46,11 @@
#define MCH_DDR_POWER_LIMIT_LO 0x58e0
#define MCH_DDR_POWER_LIMIT_HI 0x58e4
+bool soc_is_vtd_capable(void);
+
+static const struct sa_mmio_descriptor soc_vtd_resources[] = {
+ { GFXVTBAR, GFXVT_BASE_ADDRESS, GFXVT_BASE_SIZE, "GFXVTBAR" },
+ { VTVC0BAR, VTVC0_BASE_ADDRESS, VTVC0_BASE_SIZE, "VTVC0BAR" },
+};
+
#endif