imc.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include "imc.h"
#include <amdblocks/acpimmio.h>
#include <device/mmio.h>
#include <Porting.h>
#include <AGESA.h>
#include <amdlib.h>
#include <Proc/Fch/Fch.h>
#include <Proc/Fch/Common/FchCommonCfg.h>
#include <Proc/Fch/FchPlatform.h>
 
void imc_reg_init(void)
{
        /* Init Power Management Block 2 (PM2) Registers.
         * Check BKDG for AMD Family 16h for details. */
        pm2_write8(0, 0x06);
        pm2_write8(1, 0x06);
        pm2_write8(2, 0xf7);
        pm2_write8(3, 0xff);
        pm2_write8(4, 0xff);
 
#if !CONFIG(SOUTHBRIDGE_AMD_AGESA_YANGTZE)
        pm2_write8(0x10, 0x06);
        pm2_write8(0x11, 0x06);
        pm2_write8(0x12, 0xf7);
        pm2_write8(0x13, 0xff);
        pm2_write8(0x14, 0xff);
#endif
 
#if CONFIG(SOUTHBRIDGE_AMD_AGESA_YANGTZE)
        UINT8 PciData;
        PCI_ADDR PciAddress;
        AMD_CONFIG_PARAMS StdHeader;
        PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 0x3, 0x1E4);
        LibAmdPciRead(AccessWidth8, PciAddress, &PciData, &StdHeader);
        PciData &= (UINT8)0x8F;
        PciData |= 0x10;
        LibAmdPciWrite(AccessWidth8, PciAddress, &PciData, &StdHeader);
#endif
}
 
void enable_imc_thermal_zone(void)
{
        AMD_CONFIG_PARAMS StdHeader;
        UINT8 FunNum;
        UINT8 regs[10];
        int i;
 
        regs[0] = 0;
        regs[1] = 0;
        FunNum = Fun_80;
        for (i = 0; i <= 1; i++)
                WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
        WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);     // function number
        WaitForEcLDN9MailboxCmdAck(&StdHeader);
 
        for (i = 2; i < ARRAY_SIZE(regs); i++)
                ReadECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
 
        /* enable thermal zone 0 */
        regs[2] |= 1;
        regs[0] = 0;
        regs[1] = 0;
        FunNum = Fun_81;
        for (i = 0; i < ARRAY_SIZE(regs); i++)
                WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
        WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);     // function number
        WaitForEcLDN9MailboxCmdAck(&StdHeader);
}