Martin Roth (martin.roth@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2500
-gerrit
commit e60e0caa0be4b7276203ff007221fa2573473544 Author: Martin Roth martin.roth@se-eng.com Date: Sun Feb 24 12:58:33 2013 -0700
AMD Persimmon: Use SPD read code from F14 wrapper
Changes: - Get rid of the persimmon mainboard specific code which has been moved into the wrapper as a platform generic function in change http://review.coreboot.org/#/c/2497/ AMD f14: Add SPD read functions to wrapper code
- Move DIMM addresses into devicetree.cb
- Add the ASF init that used to be in the SPD read code into mainboard_enable()
Notes: - The DIMM reads only happen in romstage, so the function is not available in ramstage. Point the read-SPD callback to a generic function in ramstage.
Change-Id: I5f017dbb8dee5a09ec19734a6069ff9b71a6ab50 Signed-off-by: Martin Roth martin.roth@se-eng.com --- src/mainboard/amd/persimmon/BiosCallOuts.c | 8 +- src/mainboard/amd/persimmon/Makefile.inc | 2 - src/mainboard/amd/persimmon/devicetree.cb | 7 ++ src/mainboard/amd/persimmon/dimmSpd.c | 164 ----------------------------- src/mainboard/amd/persimmon/dimmSpd.h | 63 ----------- src/mainboard/amd/persimmon/mainboard.c | 9 ++ 6 files changed, 22 insertions(+), 231 deletions(-)
diff --git a/src/mainboard/amd/persimmon/BiosCallOuts.c b/src/mainboard/amd/persimmon/BiosCallOuts.c index 9bad4f4..700da08 100644 --- a/src/mainboard/amd/persimmon/BiosCallOuts.c +++ b/src/mainboard/amd/persimmon/BiosCallOuts.c @@ -19,10 +19,10 @@
#include "agesawrapper.h" #include "amdlib.h" -#include "dimmSpd.h" #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" +#include <northbridge/amd/agesa/family14/dimmSpd.h>
STATIC BIOS_CALLOUT_STRUCT BiosCallouts[] = { @@ -428,7 +428,11 @@ AGESA_STATUS BiosReset (UINT32 Func, UINT32 Data, VOID *ConfigPtr) AGESA_STATUS BiosReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) { AGESA_STATUS Status; - Status = AmdMemoryReadSPD (Func, Data, (AGESA_READ_SPD_PARAMS *)ConfigPtr); +#ifdef __PRE_RAM__ + Status = agesa_ReadSPD (Func, Data, ConfigPtr); +#else + Status = AGESA_UNSUPPORTED; +#endif
return Status; } diff --git a/src/mainboard/amd/persimmon/Makefile.inc b/src/mainboard/amd/persimmon/Makefile.inc index b1a3014..17443bc 100644 --- a/src/mainboard/amd/persimmon/Makefile.inc +++ b/src/mainboard/amd/persimmon/Makefile.inc @@ -26,13 +26,11 @@ endif
romstage-y += buildOpts.c romstage-y += agesawrapper.c -romstage-y += dimmSpd.c romstage-y += BiosCallOuts.c romstage-y += PlatformGnbPcie.c
ramstage-y += buildOpts.c ramstage-y += agesawrapper.c -ramstage-y += dimmSpd.c ramstage-y += BiosCallOuts.c ramstage-y += PlatformGnbPcie.c
diff --git a/src/mainboard/amd/persimmon/devicetree.cb b/src/mainboard/amd/persimmon/devicetree.cb index d108a11..8b1acd5 100644 --- a/src/mainboard/amd/persimmon/devicetree.cb +++ b/src/mainboard/amd/persimmon/devicetree.cb @@ -149,6 +149,13 @@ chip northbridge/amd/agesa/family14/root_complex device pci 18.5 on end device pci 18.6 on end device pci 18.7 on end + + register "spdAddrLookup" = " + { + { {0xA0, 0xA2}, {0x00, 0x00}, }, // socket 0 - Channel 0 & 1 - 8-bit SPD addresses + { {0x00, 0x00}, {0x00, 0x00}, }, // socket 1 - Channel 0 & 1 - 8-bit SPD addresses + }" + end #chip northbridge/amd/agesa/family14 # CPU side of HT root complex end #domain end #northbridge/amd/agesa/family14/root_complex diff --git a/src/mainboard/amd/persimmon/dimmSpd.c b/src/mainboard/amd/persimmon/dimmSpd.c deleted file mode 100644 index a021cc2..0000000 --- a/src/mainboard/amd/persimmon/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); -} diff --git a/src/mainboard/amd/persimmon/dimmSpd.h b/src/mainboard/amd/persimmon/dimmSpd.h deleted file mode 100644 index 9ff397d..0000000 --- a/src/mainboard/amd/persimmon/dimmSpd.h +++ /dev/null @@ -1,63 +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 - */ - -/*---------------------------------------------------------------------------------------- - * M O D U L E S U S E D - *---------------------------------------------------------------------------------------- - */ - -#ifndef _DIMMSPD_H_ -#define _DIMMSPD_H_ - -#include "Porting.h" -#include "AGESA.h" - -/*---------------------------------------------------------------------------------------- - * D E F I N I T I O N S A N D M A C R O S - *---------------------------------------------------------------------------------------- - */ - -/*---------------------------------------------------------------------------------------- - * T Y P E D E F S A N D S T R U C T U R E S - *---------------------------------------------------------------------------------------- - */ - -/*---------------------------------------------------------------------------------------- - * P R O T O T Y P E S O F L O C A L F U N C T I O N S - *---------------------------------------------------------------------------------------- - */ - -/*---------------------------------------------------------------------------------------- - * E X P O R T E D F U N C T I O N S - *---------------------------------------------------------------------------------------- - */ - -AGESA_STATUS -AmdMemoryReadSPD ( - IN UINT32 Func, - IN UINT32 Data, - IN OUT AGESA_READ_SPD_PARAMS *SpdData - ); - -/*--------------------------------------------------------------------------------------- - * L O C A L F U N C T I O N S - *--------------------------------------------------------------------------------------- - */ - -#endif diff --git a/src/mainboard/amd/persimmon/mainboard.c b/src/mainboard/amd/persimmon/mainboard.c index 99e1c30..12e6be3 100644 --- a/src/mainboard/amd/persimmon/mainboard.c +++ b/src/mainboard/amd/persimmon/mainboard.c @@ -73,6 +73,15 @@ static void mainboard_enable(device_t dev) *(misc_mem_clk_cntrl + 2) = 0x00; *(misc_mem_clk_cntrl + 3) = 0x00; *(misc_mem_clk_cntrl + 4) = 0x00; + + /* + * Initialize ASF registers to an arbitrary address because someone + * long ago set things up this way inside the SPD read code. The + * SPD read code has been made generic and moved out of the persimmon + * directory, so the ASF init is being done here. + */ + pm_iowrite(0x29, 0x80); + pm_iowrite(0x28, 0x61); }
struct chip_operations mainboard_ops = {