| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/amd/msr.h> |
| #include <cpu/amd/mtrr.h> |
| #include <northbridge/amd/agesa/agesa_helper.h> |
| #include <Porting.h> |
| #include <AGESA.h> |
| #include <amdlib.h> |
| |
| void amd_initcpuio(void) |
| { |
| UINT64 MsrReg; |
| UINT32 PciData; |
| PCI_ADDR PciAddress; |
| AMD_CONFIG_PARAMS StdHeader; |
| |
| /* Enable legacy video routing: D18F1xF4 VGA Enable */ |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xF4); |
| PciData = 1; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| |
| /* The platform BIOS needs to ensure the memory ranges of SB800 legacy |
| * devices (TPM, HPET, BIOS RAM, Watchdog Timer, I/O APIC and ACPI) are |
| * set to non-posted regions. |
| */ |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x84); |
| /* last address before processor local APIC at FEE00000 */ |
| PciData = 0x00FEDF00; |
| /* set NP (non-posted) bit */ |
| PciData |= 1 << 7; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x80); |
| /* lowest NP address is HPET at FED00000 */ |
| PciData = (0xFED00000 >> 8) | 3; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| |
| /* Map the remaining PCI hole as posted MMIO */ |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x8C); |
| PciData = 0x00FECF00; /* last address before non-posted range */ |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| LibAmdMsrRead(TOP_MEM, &MsrReg, &StdHeader); |
| MsrReg = (MsrReg >> 8) | 3; |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x88); |
| PciData = (UINT32)MsrReg; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| |
| /* Send all IO (0000-FFFF) to southbridge. */ |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC4); |
| PciData = 0x0000F000; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC0); |
| PciData = 0x00000003; |
| LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader); |
| } |