diff options
| author | Matt DeVillier <matt.devillier@gmail.com> | 2018-02-19 17:33:48 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-03-01 16:10:15 +0000 |
| commit | 81a6f109bab8f58984603fbd534e2548be290480 (patch) | |
| tree | a0b788ef08d7134dd4e22f4169b8d0caddc34b45 /src/soc/intel/broadwell/lpc.c | |
| parent | e85e0f57acf1b1dfe86b54689cf89659bfd94a54 (diff) | |
soc/intel/broadwell: 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 and reserved from the OS.
Change-Id: I7afcce0da028a160174db2cf6b4b6735bcd59165
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/23820
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/soc/intel/broadwell/lpc.c')
| -rw-r--r-- | src/soc/intel/broadwell/lpc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/lpc.c b/src/soc/intel/broadwell/lpc.c index d1c42423ae..8e7f4de931 100644 --- a/src/soc/intel/broadwell/lpc.c +++ b/src/soc/intel/broadwell/lpc.c @@ -49,6 +49,10 @@ static void pch_enable_ioapic(struct device *dev) { u32 reg32; + /* Assign unique bus/dev/fn for I/O APIC */ + pci_write_config16(dev, LPC_IBDF, + PCH_IOAPIC_PCI_BUS << 8 | PCH_IOAPIC_PCI_SLOT << 3); + set_ioapic_id(VIO_APIC_VADDR, 0x02); /* affirm full set of redirection table entries ("write once") */ @@ -67,6 +71,16 @@ static void pch_enable_ioapic(struct device *dev) io_apic_write(VIO_APIC_VADDR, 0x03, 0x01); } +static void enable_hpet(struct device *dev) +{ + size_t i; + + /* Assign unique bus/dev/fn for each HPET */ + for (i = 0; i < 8; ++i) + pci_write_config16(dev, LPC_HnBDF(i), + PCH_HPET_PCI_BUS << 8 | PCH_HPET_PCI_SLOT << 3 | i); +} + /* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control * 0x00 - 0000 = Reserved * 0x01 - 0001 = Reserved @@ -436,6 +450,7 @@ static void lpc_init(struct device *dev) pch_pirq_init(dev); setup_i8259(); i8259_configure_irq_trigger(9, 1); + enable_hpet(dev); /* Initialize power management */ pch_power_options(dev); |