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soc/intel/broadwell: Enable VT-d and X2APIC

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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>
This commit is contained in:
Matt DeVillier
2018-02-19 17:33:48 -06:00
committed by Martin Roth
parent e85e0f57ac
commit 81a6f109ba
7 changed files with 74 additions and 3 deletions
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20
src/soc/intel/broadwell/systemagent.c
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@ -271,7 +271,7 @@ static void mc_report_map_entries(device_t dev, uint64_t *values)
printk(BIOS_DEBUG, "MC MAP: GGC: 0x%x\n", pci_read_config16(dev, GGC));
}
static void mc_add_dram_resources(device_t dev)
static void mc_add_dram_resources(device_t dev, int *resource_cnt)
{
unsigned long base_k, size_k;
unsigned long touud_k;
@ -327,7 +327,7 @@ static void mc_add_dram_resources(device_t dev)
* The resource index starts low and should not meet or exceed
* PCI_BASE_ADDRESS_0.
*/
index = 0;
index = *resource_cnt;
/* 0 - > 0xa0000 */
base_k = 0;
@ -373,18 +373,32 @@ static void mc_add_dram_resources(device_t dev)
(0x100000 - 0xc0000) >> 10);
chromeos_reserve_ram_oops(dev, index++);
*resource_cnt = index;
}
static void systemagent_read_resources(device_t dev)
{
int index = 0;
const bool vtd_capable =
!(pci_read_config32(dev, CAPID0_A) & VTD_DISABLE);
/* Read standard PCI resources. */
pci_dev_read_resources(dev);
/* Add all fixed MMIO resources. */
mc_add_fixed_mmio_resources(dev);
/* Add VT-d MMIO resources if capable */
if (vtd_capable) {
mmio_resource(dev, index++, GFXVT_BASE_ADDRESS / KiB,
GFXVT_BASE_SIZE / KiB);
mmio_resource(dev, index++, VTVC0_BASE_ADDRESS / KiB,
VTVC0_BASE_SIZE / KiB);
}
/* Calculate and add DRAM resources. */
mc_add_dram_resources(dev);
mc_add_dram_resources(dev, &index);
}
static void systemagent_init(struct device *dev)