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/* 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 <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);
PciData = 0x00FEDF00; /* last address before processor local APIC at FEE00000 */
PciData |= 1 << 7; /* set NP (non-posted) bit */
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x80);
PciData = (0xFED00000 >> 8) | 3; /* lowest NP address is HPET at FED00000 */
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);
}
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