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- /** @file
- Platform Hooks file
- @copyright
- Copyright 1999 - 2021 Intel Corporation. <BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <Base.h>
- #include <Library/IoLib.h>
- #include <Library/PciLib.h>
- #include <Library/BaseLib.h>
- #include <Library/DebugLib.h>
- #include <Library/BaseMemoryLib.h>
- #include <Include/SioRegs.h>
- UINT8
- IsSimPlatform (VOID)
- {
- return 0;
- }
- /**
- Read Aspeed AHB register.
- @param RegIndex: register index of Aspeed.
- @retval value of register.
- **/
- UINT32
- ReadAHBDword (
- UINT32 RegIndex
- )
- {
- UINT8 bValue;
- UINT32 rdValue = 0;
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, REG_LOGICAL_DEVICE);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, ASPEED2500_SIO_SMI);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0x30);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, 1);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf8);
- bValue = IoRead8(ASPEED2500_SIO_DATA_PORT);
- bValue &= 0xfc;
- bValue |= 2; // 4 byte window.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, bValue);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf0);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, (UINT8)((RegIndex >> 24)& 0xff));
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf1);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, (UINT8)((RegIndex >> 16)& 0xff));
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf2);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, (UINT8)((RegIndex >> 8) & 0xff));
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf3);
- IoWrite8 (0xED, 0);//short delay.
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, (UINT8)((RegIndex )& 0xff));
- // trigger read
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xfe);
- IoRead8 (ASPEED2500_SIO_DATA_PORT);
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf4);
- rdValue += IoRead8 (ASPEED2500_SIO_DATA_PORT);
- rdValue <<= 8;
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf5);
- rdValue += IoRead8 (ASPEED2500_SIO_DATA_PORT);
- rdValue <<= 8;
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf6);
- rdValue += IoRead8 (ASPEED2500_SIO_DATA_PORT);
- rdValue <<= 8;
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, 0xf7);
- rdValue += IoRead8 (ASPEED2500_SIO_DATA_PORT);
- return rdValue;
- }
- /**
- * Checks for the presence of ASPEED SIO
- * @return TRUE if its present. FALSE if not.
- */
- BOOLEAN
- IsAspeedPresent (
- VOID
- )
- {
- BOOLEAN PresenceStatus = FALSE;
- //
- //ASPEED AST2500/AST2600
- //
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, ASPEED2500_SIO_UNLOCK);
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, ASPEED2500_SIO_UNLOCK);
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, REG_LOGICAL_DEVICE);
- IoWrite8 (ASPEED2500_SIO_DATA_PORT, ASPEED2500_SIO_UART1);
- if (IoRead8 (ASPEED2500_SIO_DATA_PORT) == ASPEED2500_SIO_UART1) {
- //
- // In ESPI mode, assume this SIO logic device always present.
- //
- #ifdef ESPI_ENABLE
- PresenceStatus = TRUE;
- #else
- //
- //There is a Aspeed card need to support as well. it's type is AST2500 A1 EVB.
- //
- //AST2300-A0 0x01000003
- //AST2300-A1 0x01010303
- //AST1300-A1 0x01010003
- //AST1050-A1 0x01010203
- //AST2400-A0 0x02000303
- //AST2400-A1 0x02010303
- //AST1400-A1 0x02010103
- //AST1250-A1 0x02010303
- //AST2500-A0 0x04000303
- //AST2510-A0 0x04000103
- //AST2520-A0 0x04000203
- //AST2530-A0 0x04000403
- //AST2500-A1 0x04010303
- //AST2510-A1 0x04010103
- //AST2520-A1 0x04010203
- //AST2530-A1 0x04010403
- //
- if ((ReadAHBDword (SCU7C) & 0xff0000ff) == 0x04000003) {
- PresenceStatus = TRUE;
- }
- #endif
- }
- IoWrite8 (ASPEED2500_SIO_INDEX_PORT, ASPEED2500_SIO_LOCK);
- return PresenceStatus;
- }
- /**
- * Checks for the presence of Nuvoton SIO
- * @return TRUE if its present. FALSE if not.
- */
- BOOLEAN
- IsNuvotonPresent (
- VOID
- )
- {
- BOOLEAN PresenceStatus = FALSE;
- //
- // Nuvoton NCT5104D
- //
- IoWrite8 (NCT5104D_SIO_INDEX_PORT, NCT5104D_ENTER_THE_EXTENDED_FUNCTION_MODE);
- IoWrite8 (NCT5104D_SIO_INDEX_PORT, NCT5104D_ENTER_THE_EXTENDED_FUNCTION_MODE);
- IoWrite8 (NCT5104D_SIO_INDEX_PORT, NCT5104D_CHIP_ID_REG);
- if (IoRead8 (NCT5104D_SIO_DATA_PORT) == NCT5104D_CHIP_ID) {
- PresenceStatus = TRUE;
- }
- return PresenceStatus;
- }
- /**
- * Checks for the presence of the following SIO:
- * -ASPEED AST2500
- * -Nuvoton NCT5104D
- *
- * @return An UINT32 with the corresponding bit set for each SIO.
- * -ASPEED_EXIST BIT4
- * -NCT5104D_EXIST BIT3
- * -PC8374_EXIST BIT1
- * -PILOTIV_EXIST BIT0
- */
- UINT32
- IsSioExist (
- VOID
- )
- {
- UINT32 SioExit = 0;
- if (IsAspeedPresent ()) {
- SioExit |= ASPEED_EXIST;
- }
- if (IsNuvotonPresent ()) {
- SioExit |= NCT5104D_EXIST;
- }
- DEBUG((DEBUG_INFO, "[SIO] Current system SIO exist bit:%x \n", SioExit));
- return SioExit;
- }
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