diff options
Diffstat (limited to 'src/mainboard/lippert/toucan-af/dimmSpd.c')
| -rw-r--r-- | src/mainboard/lippert/toucan-af/dimmSpd.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/src/mainboard/lippert/toucan-af/dimmSpd.c b/src/mainboard/lippert/toucan-af/dimmSpd.c deleted file mode 100644 index a021cc26ce..0000000000 --- a/src/mainboard/lippert/toucan-af/dimmSpd.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 Advanced Micro Devices, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "Porting.h" -#include "AGESA.h" -#include "amdlib.h" -#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ - -AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info); -#define DIMENSION(array)(sizeof (array)/ sizeof (array [0])) - -/*#pragma optimize ("", off) // for source level debug -*--------------------------------------------------------------------------- -* -* SPD address table - porting required -*/ - -static const UINT8 spdAddressLookup [2] [2] [4] = // socket, channel, dimm -{ - // socket 0 - { - {0xA0, 0xA2}, // channel 0 dimms - {0x00, 0x00}, // channel 1 dimms - }, - // socket 1 - { - {0x00, 0x00}, // channel 0 dimms - {0x00, 0x00}, // channel 1 dimms - }, -}; - -/*----------------------------------------------------------------------------- - * - * readSmbusByteData - read a single SPD byte from any offset - */ - -static int readSmbusByteData (int iobase, int address, char *buffer, int offset) -{ - unsigned int status; - UINT64 limit; - - address |= 1; // set read bit - - __outbyte (iobase + 0, 0xFF); // clear error status - __outbyte (iobase + 1, 0x1F); // clear error status - __outbyte (iobase + 3, offset); // offset in eeprom - __outbyte (iobase + 4, address); // slave address and read bit - __outbyte (iobase + 2, 0x48); // read byte command - - // time limit to avoid hanging for unexpected error status (should never happen) - limit = __rdtsc () + 2000000000 / 10; - for (;;) { - status = __inbyte (iobase); - if (__rdtsc () > limit) break; - if ((status & 2) == 0) continue; // SMBusInterrupt not set, keep waiting - if ((status & 1) == 1) continue; // HostBusy set, keep waiting - break; - } - - buffer [0] = __inbyte (iobase + 5); - if (status == 2) status = 0; // check for done with no errors - return status; -} - -/*----------------------------------------------------------------------------- - * - * readSmbusByte - read a single SPD byte from the default offset - * this function is faster function readSmbusByteData - */ - -static int readSmbusByte (int iobase, int address, char *buffer) -{ - unsigned int status; - UINT64 limit; - - __outbyte (iobase + 0, 0xFF); // clear error status - __outbyte (iobase + 2, 0x44); // read command - - // time limit to avoid hanging for unexpected error status - limit = __rdtsc () + 2000000000 / 10; - for (;;) { - status = __inbyte (iobase); - if (__rdtsc () > limit) break; - if ((status & 2) == 0) continue; // SMBusInterrupt not set, keep waiting - if ((status & 1) == 1) continue; // HostBusy set, keep waiting - break; - } - - buffer [0] = __inbyte (iobase + 5); - if (status == 2) status = 0; // check for done with no errors - return status; -} - -/*--------------------------------------------------------------------------- - * - * readspd - Read one or more SPD bytes from a DIMM. - * Start with offset zero and read sequentially. - * Optimization relies on autoincrement to avoid - * sending offset for every byte. - * Reads 128 bytes in 7-8 ms at 400 KHz. - */ - -static int readspd (int iobase, int SmbusSlaveAddress, char *buffer, int count) -{ - int index, error; - - /* read the first byte using offset zero */ - error = readSmbusByteData (iobase, SmbusSlaveAddress, buffer, 0); - if (error) return error; - - /* read the remaining bytes using auto-increment for speed */ - for (index = 1; index < count; index++) { - error = readSmbusByte (iobase, SmbusSlaveAddress, &buffer [index]); - if (error) return error; - } - - return 0; -} - -static void writePmReg (int reg, int data) - { - __outbyte (0xCD6, reg); - __outbyte (0xCD7, data); - } - -static void setupFch (int ioBase) -{ - writePmReg (0x2D, ioBase >> 8); - writePmReg (0x2C, ioBase | 1); - writePmReg (0x29, 0x80); - writePmReg (0x28, 0x61); - __outbyte (ioBase + 0x0E, 66000000 / 400000 / 4); // set SMBus clock to 400 KHz -} - -AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info) -{ - int spdAddress, ioBase; - - if (info->SocketId >= DIMENSION (spdAddressLookup )) return AGESA_ERROR; - if (info->MemChannelId >= DIMENSION (spdAddressLookup[0] )) return AGESA_ERROR; - if (info->DimmId >= DIMENSION (spdAddressLookup[0][0])) return AGESA_ERROR; - - spdAddress = spdAddressLookup [info->SocketId] [info->MemChannelId] [info->DimmId]; - if (spdAddress == 0) return AGESA_ERROR; - ioBase = SMBUS0_BASE_ADDRESS; - setupFch (ioBase); - return readspd (ioBase, spdAddress, (void *) info->Buffer, 128); -} |