Patch set updated for coreboot: 5e17bc1 AGESA fam12 fam14 fam15: Use common agesa_readSpd()
Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7113
-gerrit
commit 5e17bc1c28bc05f8da4d6c4dccba0d857d20cf49 Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Fri Oct 17 22:33:22 2014 +0300
AGESA fam12 fam14 fam15: Use common agesa_readSpd()
Remove northbridge specific callouts for AGESA_READ_SPD.
Move low-level SMBus code to southbridge.
Change-Id: I5fc91c49d9ef8e0af1c4d8194f857c61ce417d1d Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/mainboard/amd/dinar/BiosCallOuts.c | 5 +- src/mainboard/amd/inagua/BiosCallOuts.c | 3 +- src/mainboard/amd/persimmon/BiosCallOuts.c | 3 +- src/mainboard/amd/south_station/BiosCallOuts.c | 3 +- src/mainboard/amd/torpedo/BiosCallOuts.c | 2 +- src/mainboard/amd/union_station/BiosCallOuts.c | 3 +- src/mainboard/asrock/e350m1/BiosCallOuts.c | 3 +- src/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.c | 3 +- .../lippert/frontrunner-af/BiosCallOuts.c | 3 +- src/mainboard/lippert/toucan-af/BiosCallOuts.c | 3 +- src/mainboard/supermicro/h8qgi/BiosCallOuts.c | 3 +- src/mainboard/supermicro/h8scm/BiosCallOuts.c | 19 +-- src/mainboard/tyan/s8226/BiosCallOuts.c | 3 +- src/northbridge/amd/agesa/def_callouts.c | 2 +- src/northbridge/amd/agesa/family12/Makefile.inc | 1 - src/northbridge/amd/agesa/family12/dimmSpd.c | 177 +-------------------- src/northbridge/amd/agesa/family12/dimmSpd.h | 63 -------- .../amd/agesa/family12/fam12_callouts.c | 9 -- .../amd/agesa/family12/fam12_callouts.h | 2 - src/northbridge/amd/agesa/family14/dimmSpd.c | 94 +---------- src/northbridge/amd/agesa/family14/dimmSpd.h | 83 ---------- .../amd/agesa/family14/fam14_callouts.c | 14 -- .../amd/agesa/family14/fam14_callouts.h | 2 - src/northbridge/amd/agesa/family15/dimmSpd.c | 134 +--------------- src/northbridge/amd/agesa/family15/dimmSpd.h | 97 ----------- .../amd/agesa/family15/fam15_callouts.c | 1 - src/southbridge/amd/cimx/sb700/Makefile.inc | 2 +- src/southbridge/amd/cimx/sb700/smbus_spd.c | 164 +++++++++++++++++++ src/southbridge/amd/cimx/sb700/smbus_spd.h | 65 ++++++++ src/southbridge/amd/cimx/sb800/Makefile.inc | 2 +- src/southbridge/amd/cimx/sb800/smbus_spd.c | 123 ++++++++++++++ src/southbridge/amd/cimx/sb800/smbus_spd.h | 51 ++++++ src/southbridge/amd/cimx/sb900/Makefile.inc | 2 +- src/southbridge/amd/cimx/sb900/smbus_spd.c | 177 +++++++++++++++++++++ 34 files changed, 622 insertions(+), 699 deletions(-)
diff --git a/src/mainboard/amd/dinar/BiosCallOuts.c b/src/mainboard/amd/dinar/BiosCallOuts.c index c5267dc..72424f8 100644 --- a/src/mainboard/amd/dinar/BiosCallOuts.c +++ b/src/mainboard/amd/dinar/BiosCallOuts.c @@ -24,10 +24,11 @@ #include "OptionsIds.h" #include "heapManager.h" #include "SB700.h" -#include <northbridge/amd/agesa/family15/dimmSpd.h> #include "OEM.h" /* SMBUS0_BASE_ADDRESS */ #include <stdlib.h>
+#include <southbridge/amd/cimx/sb700/smbus_spd.h> + #ifndef SB_GPIO_REG01 #define SB_GPIO_REG01 1 #endif @@ -117,7 +118,7 @@ static AGESA_STATUS board_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId);
- Status = agesa_ReadSPD (Func, Data, ConfigPtr); + Status = agesa_ReadSpd (Func, Data, ConfigPtr);
restore_socket(); #else diff --git a/src/mainboard/amd/inagua/BiosCallOuts.c b/src/mainboard/amd/inagua/BiosCallOuts.c index f67d879..5613012 100644 --- a/src/mainboard/amd/inagua/BiosCallOuts.c +++ b/src/mainboard/amd/inagua/BiosCallOuts.c @@ -22,7 +22,6 @@ #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINT32 Data, VOID *ConfigPtr); @@ -34,7 +33,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/amd/persimmon/BiosCallOuts.c b/src/mainboard/amd/persimmon/BiosCallOuts.c index cfd9c6f..c700324 100644 --- a/src/mainboard/amd/persimmon/BiosCallOuts.c +++ b/src/mainboard/amd/persimmon/BiosCallOuts.c @@ -22,7 +22,6 @@ #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINT32 Data, VOID *ConfigPtr); @@ -34,7 +33,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/amd/south_station/BiosCallOuts.c b/src/mainboard/amd/south_station/BiosCallOuts.c index 6dfad31..272a394 100644 --- a/src/mainboard/amd/south_station/BiosCallOuts.c +++ b/src/mainboard/amd/south_station/BiosCallOuts.c @@ -22,7 +22,6 @@ #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINT32 Data, VOID *ConfigPtr); @@ -34,7 +33,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/amd/torpedo/BiosCallOuts.c b/src/mainboard/amd/torpedo/BiosCallOuts.c index 8422f1d..38d4003 100644 --- a/src/mainboard/amd/torpedo/BiosCallOuts.c +++ b/src/mainboard/amd/torpedo/BiosCallOuts.c @@ -47,7 +47,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/amd/union_station/BiosCallOuts.c b/src/mainboard/amd/union_station/BiosCallOuts.c index 6dfad31..272a394 100644 --- a/src/mainboard/amd/union_station/BiosCallOuts.c +++ b/src/mainboard/amd/union_station/BiosCallOuts.c @@ -22,7 +22,6 @@ #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINT32 Data, VOID *ConfigPtr); @@ -34,7 +33,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/asrock/e350m1/BiosCallOuts.c b/src/mainboard/asrock/e350m1/BiosCallOuts.c index 09571dd..4a39cd6 100644 --- a/src/mainboard/asrock/e350m1/BiosCallOuts.c +++ b/src/mainboard/asrock/e350m1/BiosCallOuts.c @@ -22,7 +22,6 @@ #include "BiosCallOuts.h" #include "heapManager.h" #include "SB800.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
/* Should AGESA_GNB_PCIE_SLOT_RESET use agesa_NoopSuccess? @@ -39,7 +38,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_HOOKBEFORE_DQS_TRAINING, agesa_NoopSuccess }, diff --git a/src/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.c b/src/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.c index b3199ca..dd3d4cf 100644 --- a/src/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.c +++ b/src/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.c @@ -21,7 +21,6 @@ #include "BiosCallOuts.h"
#include <Lib/amdlib.h> -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <vendorcode/amd/agesa/f14/Proc/CPU/heapManager.h> #include <vendorcode/amd/cimx/sb800/SB800.h> #include <stdint.h> @@ -36,7 +35,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPcieSlotReset }, diff --git a/src/mainboard/lippert/frontrunner-af/BiosCallOuts.c b/src/mainboard/lippert/frontrunner-af/BiosCallOuts.c index 0264256..3104c24 100644 --- a/src/mainboard/lippert/frontrunner-af/BiosCallOuts.c +++ b/src/mainboard/lippert/frontrunner-af/BiosCallOuts.c @@ -21,7 +21,6 @@ #include "amdlib.h" #include "BiosCallOuts.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
/* Should AGESA_GNB_PCIE_SLOT_RESET use agesa_NoopSuccess? @@ -37,7 +36,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, agesa_NoopUnsupported }, diff --git a/src/mainboard/lippert/toucan-af/BiosCallOuts.c b/src/mainboard/lippert/toucan-af/BiosCallOuts.c index f1ae168..da9ab1a 100644 --- a/src/mainboard/lippert/toucan-af/BiosCallOuts.c +++ b/src/mainboard/lippert/toucan-af/BiosCallOuts.c @@ -21,7 +21,6 @@ #include "amdlib.h" #include "BiosCallOuts.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family14/dimmSpd.h> #include <stdlib.h>
/* Should AGESA_GNB_PCIE_SLOT_RESET use agesa_NoopSuccess? @@ -38,7 +37,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, BiosReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GNB_PCIE_SLOT_RESET, agesa_NoopUnsupported }, diff --git a/src/mainboard/supermicro/h8qgi/BiosCallOuts.c b/src/mainboard/supermicro/h8qgi/BiosCallOuts.c index 6e6eb6a..7b7d5e1 100644 --- a/src/mainboard/supermicro/h8qgi/BiosCallOuts.c +++ b/src/mainboard/supermicro/h8qgi/BiosCallOuts.c @@ -23,7 +23,6 @@ #include "Ids.h" #include "OptionsIds.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family15/dimmSpd.h> #include <arch/io.h>
#ifdef __PRE_RAM__ @@ -101,7 +100,7 @@ static AGESA_STATUS board_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
original_value = select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId);
- Status = agesa_ReadSPD (Func, Data, ConfigPtr); + Status = agesa_ReadSpd (Func, Data, ConfigPtr);
restore_socket(original_value); #else diff --git a/src/mainboard/supermicro/h8scm/BiosCallOuts.c b/src/mainboard/supermicro/h8scm/BiosCallOuts.c index 5d0fd00..c891dbd 100644 --- a/src/mainboard/supermicro/h8scm/BiosCallOuts.c +++ b/src/mainboard/supermicro/h8scm/BiosCallOuts.c @@ -23,18 +23,15 @@ #include "Ids.h" #include "OptionsIds.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family15/dimmSpd.h> #include <stdlib.h>
-static AGESA_STATUS board_ReadSpd (UINT32 Func,UINT32 Data, VOID *ConfigPtr); - const BIOS_CALLOUT_STRUCT BiosCallouts[] = { {AGESA_ALLOCATE_BUFFER, agesa_AllocateBuffer }, {AGESA_DEALLOCATE_BUFFER, agesa_DeallocateBuffer }, {AGESA_LOCATE_BUFFER, agesa_LocateBuffer }, {AGESA_DO_RESET, agesa_Reset }, - {AGESA_READ_SPD, board_ReadSpd }, + {AGESA_READ_SPD, agesa_ReadSpd }, {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GET_IDS_INIT_DATA, agesa_EmptyIdsInitData }, @@ -43,17 +40,3 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_HOOKBEFORE_EXIT_SELF_REF, agesa_NoopSuccess }, }; const int BiosCalloutsLen = ARRAY_SIZE(BiosCallouts); - - - -static AGESA_STATUS board_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) -{ - AGESA_STATUS Status; -#ifdef __PRE_RAM__ - Status = agesa_ReadSPD (Func, Data, ConfigPtr); -#else - Status = AGESA_UNSUPPORTED; -#endif - - return Status; -} diff --git a/src/mainboard/tyan/s8226/BiosCallOuts.c b/src/mainboard/tyan/s8226/BiosCallOuts.c index ee64122..becb4d0 100644 --- a/src/mainboard/tyan/s8226/BiosCallOuts.c +++ b/src/mainboard/tyan/s8226/BiosCallOuts.c @@ -23,7 +23,6 @@ #include "Ids.h" #include "OptionsIds.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family15/dimmSpd.h> #include <arch/io.h> #include <stdlib.h>
@@ -109,7 +108,7 @@ static AGESA_STATUS board_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
original_value = select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId);
- Status = agesa_ReadSPD (Func, Data, ConfigPtr); + Status = agesa_ReadSpd (Func, Data, ConfigPtr);
restore_socket(original_value); #else diff --git a/src/northbridge/amd/agesa/def_callouts.c b/src/northbridge/amd/agesa/def_callouts.c index 9975924..fd8e373 100644 --- a/src/northbridge/amd/agesa/def_callouts.c +++ b/src/northbridge/amd/agesa/def_callouts.c @@ -115,6 +115,7 @@ AGESA_STATUS agesa_GfxGetVbiosImage(UINT32 Func, UINT32 FchData, VOID *ConfigPrt /* printk(BIOS_DEBUG, "IMGptr=%x\n", pVbiosImageInfo->ImagePtr); */ return pVbiosImageInfo->ImagePtr == NULL ? AGESA_WARNING : AGESA_SUCCESS; } +#endif
AGESA_STATUS agesa_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) { @@ -124,7 +125,6 @@ AGESA_STATUS agesa_ReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) #endif return Status; } -#endif
AGESA_STATUS agesa_ReadSpd_from_cbfs(UINT32 Func, UINT32 Data, VOID *ConfigPtr) { diff --git a/src/northbridge/amd/agesa/family12/Makefile.inc b/src/northbridge/amd/agesa/family12/Makefile.inc index ffadecd..af67f69 100644 --- a/src/northbridge/amd/agesa/family12/Makefile.inc +++ b/src/northbridge/amd/agesa/family12/Makefile.inc @@ -22,6 +22,5 @@ romstage-y += dimmSpd.c
ramstage-y += northbridge.c ramstage-y += fam12_callouts.c -ramstage-y += dimmSpd.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += ssdt.asl diff --git a/src/northbridge/amd/agesa/family12/dimmSpd.c b/src/northbridge/amd/agesa/family12/dimmSpd.c index 55fb2c3..3ac4d7d 100644 --- a/src/northbridge/amd/agesa/family12/dimmSpd.c +++ b/src/northbridge/amd/agesa/family12/dimmSpd.c @@ -27,27 +27,13 @@ * ***************************************************************************/
-/*---------------------------------------------------------------------------------------- - * M O D U L E S U S E D - *---------------------------------------------------------------------------------------- - */ - #include "Porting.h" #include "AGESA.h" #include "amdlib.h" -#include "dimmSpd.h"
-/*---------------------------------------------------------------------------------------- - * D E F I N I T I O N S A N D M A C R O S - *---------------------------------------------------------------------------------------- - */ -#define SMBUS_BASE_ADDR 0xB00 -#define DIMENSION(array)(sizeof (array)/ sizeof (array [0])) +#include <northbridge/amd/agesa/dimmSpd.h>
-/*---------------------------------------------------------------------------------------- - * T Y P E D E F S A N D S T R U C T U R E S - *---------------------------------------------------------------------------------------- - */ +#define DIMENSION(array)(sizeof (array)/ sizeof (array [0]))
typedef struct _DIMM_INFO_SMBUS{ UINT8 SocketId; @@ -65,156 +51,6 @@ STATIC CONST DIMM_INFO_SMBUS SpdAddrLookup [] = {0, 1, 0, 0xA2} };
-/*---------------------------------------------------------------------------------------- - * 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 - *---------------------------------------------------------------------------------------- - */ - -/*--------------------------------------------------------------------------------------- - * L O C A L F U N C T I O N S - *--------------------------------------------------------------------------------------- - */ - -STATIC -VOID -WritePmReg ( - IN UINT8 Reg, - IN UINT8 Data - ) -{ - __outbyte (0xCD6, Reg); - __outbyte (0xCD7, Data); -} -STATIC -VOID -SetupFch ( - IN UINT16 - IN IoBase - ) -{ - WritePmReg (0x2D, IoBase >> 8); - WritePmReg (0x2C, IoBase | 1); - WritePmReg (0x29, 0x80); - WritePmReg (0x28, 0x61); - /* set SMBus clock to 400 KHz */ - __outbyte (IoBase + 0x0E, 66000000 / 400000 / 4); -} - -/* - * - * ReadSmbusByteData - read a single SPD byte from any offset - * - */ - -STATIC -AGESA_STATUS -ReadSmbusByteData ( - IN UINT16 Iobase, - IN UINT8 Address, - OUT UINT8 *Buffer, - IN UINTN Offset - ) -{ - UINTN 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 -AGESA_STATUS -ReadSmbusByte ( - IN UINT16 Iobase, - IN UINT8 Address, - OUT UINT8 *Buffer - ) -{ - UINTN 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 -AGESA_STATUS -ReadSpd ( - IN UINT16 IoBase, - IN UINT8 SmbusSlaveAddress, - OUT UINT8 *Buffer, - IN UINTN Count - ) -{ - UINTN Index, Status; - - /* read the first byte using offset zero */ - Status = ReadSmbusByteData (IoBase, SmbusSlaveAddress, Buffer, 0); - if (Status) return Status; - - /* read the remaining bytes using auto-increment for speed */ - for (Index = 1; Index < Count; Index++){ - Status = ReadSmbusByte (IoBase, SmbusSlaveAddress, &Buffer [Index]); - if (Status) return Status; - } - return 0; -} - AGESA_STATUS AmdMemoryReadSPD ( IN UINT32 Func, @@ -234,8 +70,11 @@ AmdMemoryReadSPD ( } }
+ if (SmBusAddress == 0) + return AGESA_ERROR;
- if (SmBusAddress == 0) return AGESA_ERROR; - SetupFch (SMBUS_BASE_ADDR); - return ReadSpd (SMBUS_BASE_ADDR, SmBusAddress, SpdData->Buffer, 128); + int err = smbus_readSpd(SmBusAddress, (char *) SpdData->Buffer, 128); + if (err) + return AGESA_ERROR; + return AGESA_SUCCESS; } diff --git a/src/northbridge/amd/agesa/family12/dimmSpd.h b/src/northbridge/amd/agesa/family12/dimmSpd.h deleted file mode 100644 index 81ab02e..0000000 --- a/src/northbridge/amd/agesa/family12/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/northbridge/amd/agesa/family12/fam12_callouts.c b/src/northbridge/amd/agesa/family12/fam12_callouts.c index 203c883..aa707a8 100644 --- a/src/northbridge/amd/agesa/family12/fam12_callouts.c +++ b/src/northbridge/amd/agesa/family12/fam12_callouts.c @@ -19,18 +19,9 @@
#include "agesawrapper.h" #include "amdlib.h" -#include "dimmSpd.h" #include "BiosCallOuts.h" #include "Ids.h" #include "OptionsIds.h" #include "heapManager.h" #include "Hudson-2.h"
- -AGESA_STATUS BiosReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) -{ - AGESA_STATUS Status; - Status = AmdMemoryReadSPD (Func, Data, (AGESA_READ_SPD_PARAMS *)ConfigPtr); - - return Status; -} diff --git a/src/northbridge/amd/agesa/family12/fam12_callouts.h b/src/northbridge/amd/agesa/family12/fam12_callouts.h index 6fb9fbb..46f4fe5 100644 --- a/src/northbridge/amd/agesa/family12/fam12_callouts.h +++ b/src/northbridge/amd/agesa/family12/fam12_callouts.h @@ -24,7 +24,5 @@ #include "AGESA.h"
-/* AGESA ADVANCED CALLOUTS - MEMORY */ -AGESA_STATUS BiosReadSpd (UINT32 Func,UINT32 Data,VOID *ConfigPtr);
#endif /* CALLOUTS_AMD_AGESA_FAM12_H */ diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.c b/src/northbridge/amd/agesa/family14/dimmSpd.c index a3f5bb3..4a0cd2a 100644 --- a/src/northbridge/amd/agesa/family14/dimmSpd.c +++ b/src/northbridge/amd/agesa/family14/dimmSpd.c @@ -26,102 +26,20 @@ #include "Porting.h" #include "AGESA.h" #include "amdlib.h" -#include "dimmSpd.h" #include "chip.h"
+#include <northbridge/amd/agesa/dimmSpd.h> + /* uncomment for source level debug - GDB gets really confused otherwise. */ //#pragma optimize ("", off)
/** - * Read a single SPD byte. If the first byte is being read, set up the - * address and offset. Following bytes auto increment. - */ -static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, - int offset, int initial_offset) -{ - unsigned int status = -1; - UINT64 time_limit; - - /* clear status register */ - __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); - - if (offset == initial_offset) { - /* Clear slave status, set offset, set slave address and start reading */ - __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x3E); - __outbyte(iobase + SMBUS_CONTROL_REG, offset); - __outbyte(iobase + SMBUS_HOST_CMD_REG, address | READ_BIT); - __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); - } else { - /* Issue read command - auto increments to next byte */ - __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); - } - /* time limit to avoid hanging for unexpected error status */ - time_limit = __rdtsc() + MAX_READ_TSC_COUNT; - while (__rdtsc() <= time_limit) { - status = __inbyte(iobase + SMBUS_STATUS_REG); - if ((status & SMBUS_INTERRUPT_MASK) == 0) - continue; /* SMBusInterrupt not set, keep waiting */ - if ((status & HOSTBUSY_MASK) != 0) - continue; /* HostBusy set, keep waiting */ - break; - } - - if (status != STATUS__COMPLETED_SUCCESSFULLY) - return AGESA_ERROR; - - buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); - return AGESA_SUCCESS; -} - -static void writePmReg(UINT8 reg, UINT8 data) -{ - __outbyte(PMIO_INDEX_REG, reg); - __outbyte(PMIO_DATA_REG, data); -} - -static void setupFch(UINT16 ioBase) -{ - /* set up SMBUS - Set to SMBUS 0 & set base address */ - /* For SB800 & Hudson1 to SB900 & Hudson 2/3 */ - writePmReg(SMBUS_BAR_HIGH_BYTE, ioBase >> 8); - writePmReg(SMBUS_BAR_LOW_BYTE, (ioBase & 0xe0) | 1); - - /* set SMBus clock to 400 KHz */ - __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); -} - -/** - * Read one or more SPD bytes from a DIMM. - * Start with offset zero and read sequentially. - * Reads 128 bytes in 7-8 ms at 400 KHz. - */ -static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, - UINT16 count) -{ - UINT16 index; - UINT8 status; - UINT8 initial_offset = 0; - - setupFch(iobase); - - for (index = initial_offset; index < count; index++) { - status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index, - initial_offset); - if (status != AGESA_SUCCESS) - return status; - } - - return status; -} - -/** * Gets the SMBUS address for an SPD from the array in devicetree.cb * then read the SPD into the supplied buffer. */ -AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr) +AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info) { UINT8 spdAddress; - AGESA_READ_SPD_PARAMS *info = infoptr; ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2)); ROMSTAGE_CONST struct northbridge_amd_agesa_family14_config *config = NULL;
@@ -141,5 +59,9 @@ AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr)
if (spdAddress == 0) return AGESA_ERROR; - return readspd(SMBUS0_BASE_ADDRESS, spdAddress, (void *)info->Buffer, 128); + + int err = smbus_readSpd(spdAddress, (void *) info->Buffer, 128); + if (err) + return AGESA_ERROR; + return AGESA_SUCCESS; } diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.h b/src/northbridge/amd/agesa/family14/dimmSpd.h deleted file mode 100644 index 57512c7..0000000 --- a/src/northbridge/amd/agesa/family14/dimmSpd.h +++ /dev/null @@ -1,83 +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, MA02110-1301 USA - */ - -/*---------------------------------------------------------------------------------------- - * M O D U L E S U S E D - *---------------------------------------------------------------------------------------- - */ - -#ifndef _DIMMSPD_H_ -#define _DIMMSPD_H_ - -/*---------------------------------------------------------------------------------------- - * D E F I N I T I O N S A N D M A C R O S - *---------------------------------------------------------------------------------------- - */ - -#define READ_BIT 0x01 - -#define SMBUS_INTERRUPT_MASK 0x02 -#define HOSTBUSY_MASK 0x01 - -#define SMBUS_READ_BYTE_COMMAND 0x48 -#define SMBUS_READ_COMMAND 0x44 - -#define MAX_READ_TSC_COUNT (2000000000 / 10) - -#define PMIO_INDEX_REG 0xCD6 -#define PMIO_DATA_REG 0xCD7 - -#define SMBUS_BAR_LOW_BYTE 0x2C -#define SMBUS_BAR_HIGH_BYTE 0x2D - -#define SMBUS_STATUS_REG 0x00 -#define SMBUS_SLAVE_STATUS_REG 0x01 -#define SMBUS_COMMAND_REG 0x02 -#define SMBUS_CONTROL_REG 0x03 -#define SMBUS_HOST_CMD_REG 0x04 -#define SMBUS_DATA0_REG 0x05 -#define SMBUS_CLOCK_REG 0x0E - -#define STATUS__COMPLETED_SUCCESSFULLY 0x02 - -#define SMBUS_FREQUENCY_CONST 66000000 / 4 -/*---------------------------------------------------------------------------------------- - * 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 -agesa_ReadSPD (IN UINT32 Func, IN UINT32 Data, IN OUT void *SpdData); - -/*--------------------------------------------------------------------------------------- - * L O C A L F U N C T I O N S - *--------------------------------------------------------------------------------------- - */ - -#endif diff --git a/src/northbridge/amd/agesa/family14/fam14_callouts.c b/src/northbridge/amd/agesa/family14/fam14_callouts.c index 3be5037..a00c25a 100644 --- a/src/northbridge/amd/agesa/family14/fam14_callouts.c +++ b/src/northbridge/amd/agesa/family14/fam14_callouts.c @@ -22,18 +22,4 @@ #include "fam14_callouts.h" #include "heapManager.h" #include "SB800.h" -#include "dimmSpd.h"
- - -AGESA_STATUS BiosReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) -{ - AGESA_STATUS Status; -#ifdef __PRE_RAM__ - Status = agesa_ReadSPD (Func, Data, ConfigPtr); -#else - Status = AGESA_UNSUPPORTED; -#endif - - return Status; -} diff --git a/src/northbridge/amd/agesa/family14/fam14_callouts.h b/src/northbridge/amd/agesa/family14/fam14_callouts.h index f58441a..b9a36fe 100644 --- a/src/northbridge/amd/agesa/family14/fam14_callouts.h +++ b/src/northbridge/amd/agesa/family14/fam14_callouts.h @@ -24,7 +24,5 @@ #include "Porting.h" #include "AGESA.h"
-/* AGESA ADVANCED CALLOUTS - MEMORY */ -AGESA_STATUS BiosReadSpd (UINT32 Func,UINT32 Data,VOID *ConfigPtr);
#endif /* CALLOUTS_AMD_AGESA_FAM14_H */ diff --git a/src/northbridge/amd/agesa/family15/dimmSpd.c b/src/northbridge/amd/agesa/family15/dimmSpd.c index 294454c..375a968 100644 --- a/src/northbridge/amd/agesa/family15/dimmSpd.c +++ b/src/northbridge/amd/agesa/family15/dimmSpd.c @@ -25,143 +25,20 @@ #include "Porting.h" #include "AGESA.h" #include "amdlib.h" -#include "dimmSpd.h" #include "chip.h"
+#include <northbridge/amd/agesa/dimmSpd.h> + /* uncomment for source level debug - GDB gets really confused otherwise. */ //#pragma optimize ("", off)
/** - * Read a single SPD byte. If the first byte is being read, set up the - * address and offset. Following bytes auto increment. - */ -static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, - int offset, int initial_offset) -{ - unsigned int status = -1; - UINT64 time_limit; - - /* clear status register */ - __outbyte(iobase + SMBUS_STATUS_REG, 0xFF); - __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x1F); - - if (offset == initial_offset) { - /* Set offset, set slave address and start reading */ - __outbyte(iobase + SMBUS_CONTROL_REG, offset); - __outbyte(iobase + SMBUS_HOST_CMD_REG, address | READ_BIT); - __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); - } else { - /* Issue read command - auto increments to next byte */ - __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); - } - /* time limit to avoid hanging for unexpected error status */ - time_limit = __rdtsc() + MAX_READ_TSC_COUNT; - while (__rdtsc() <= time_limit) { - status = __inbyte(iobase + SMBUS_STATUS_REG); - if ((status & SMBUS_INTERRUPT_MASK) == 0) - continue; /* SMBusInterrupt not set, keep waiting */ - if ((status & HOSTBUSY_MASK) != 0) - continue; /* HostBusy set, keep waiting */ - break; - } - - if (status != STATUS__COMPLETED_SUCCESSFULLY) - return AGESA_ERROR; - - buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); - return AGESA_SUCCESS; -} - -/** - * Write a single smbus byte. - */ -UINT8 writeSmbusByte(UINT16 iobase, UINT8 address, UINT8 buffer, - int offset) -{ - unsigned int status = -1; - UINT64 time_limit; - - /* clear status register */ - __outbyte(iobase + SMBUS_STATUS_REG, 0xFF); - __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x1F); - - /* set offset, set slave address, set data and start writing */ - __outbyte(iobase + SMBUS_CONTROL_REG, offset); - __outbyte(iobase + SMBUS_HOST_CMD_REG, address & (~READ_BIT)); - __outbyte(iobase + SMBUS_DATA0_REG, buffer); - __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_WRITE_BYTE_COMMAND); - - /* time limit to avoid hanging for unexpected error status */ - time_limit = __rdtsc() + MAX_READ_TSC_COUNT; - while (__rdtsc() <= time_limit) { - status = __inbyte(iobase + SMBUS_STATUS_REG); - if ((status & SMBUS_INTERRUPT_MASK) == 0) - continue; /* SMBusInterrupt not set, keep waiting */ - if ((status & HOSTBUSY_MASK) != 0) - continue; /* HostBusy set, keep waiting */ - break; - } - - if (status != STATUS__COMPLETED_SUCCESSFULLY) - return AGESA_ERROR; - - return AGESA_SUCCESS; -} - -static void setupFch(UINT16 ioBase) -{ - AMD_CONFIG_PARAMS StdHeader; - UINT32 PciData32; - UINT8 PciData8; - PCI_ADDR PciAddress; - - /* Set SMBus MMIO. */ - PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0x90); - PciData32 = (ioBase & 0xFFFFFFF0) | BIT0; - LibAmdPciWrite(AccessWidth32, PciAddress, &PciData32, &StdHeader); - - /* Enable SMBus MMIO. */ - PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0xD2); - LibAmdPciRead(AccessWidth8, PciAddress, &PciData8, &StdHeader); ; - PciData8 |= BIT0; - LibAmdPciWrite(AccessWidth8, PciAddress, &PciData8, &StdHeader); - - /* Set SMBus clock to 400 KHz */ - __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); -} - -/** - * Read one or more SPD bytes from a DIMM. - * Start with offset zero and read sequentially. - * Reads 128 bytes in 7-8 ms at 400 KHz. - */ -static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, - UINT16 count) -{ - UINT16 index; - UINT8 status; - UINT8 initial_offset = 0; - - setupFch(iobase); - - for (index = initial_offset; index < count; index++) { - status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index, - initial_offset); - if (status != AGESA_SUCCESS) - return status; - } - - return status; -} - -/** * Gets the SMBus address for an SPD from the array in devicetree.cb * then read the SPD into the supplied buffer. */ -AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr) +AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info) { UINT8 spdAddress; - AGESA_READ_SPD_PARAMS *info = infoptr; ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2)); ROMSTAGE_CONST struct northbridge_amd_agesa_family15_config *config = NULL;
@@ -182,5 +59,8 @@ AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr) if (spdAddress == 0) return AGESA_ERROR;
- return readspd(SMBUS0_BASE_ADDRESS, spdAddress, (void *)info->Buffer, 256); + int err = smbus_readSpd(spdAddress, (void *) info->Buffer, 256); + if (err) + return AGESA_ERROR; + return AGESA_SUCCESS; } diff --git a/src/northbridge/amd/agesa/family15/dimmSpd.h b/src/northbridge/amd/agesa/family15/dimmSpd.h deleted file mode 100644 index 167b4a1..0000000 --- a/src/northbridge/amd/agesa/family15/dimmSpd.h +++ /dev/null @@ -1,97 +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, MA02110-1301 USA - */ - -/*---------------------------------------------------------------------------------------- - * M O D U L E S U S E D - *---------------------------------------------------------------------------------------- - */ - -#ifndef _DIMMSPD_H_ -#define _DIMMSPD_H_ - -/*---------------------------------------------------------------------------------------- - * D E F I N I T I O N S A N D M A C R O S - *---------------------------------------------------------------------------------------- - */ - -#define READ_BIT 0x01 - -#define SMBUS_INTERRUPT_MASK 0x02 -#define HOSTBUSY_MASK 0x01 - -#define SMBUS_READ_BYTE_COMMAND 0x48 -#define SMBUS_READ_COMMAND 0x44 - -#define SMBUS_WRITE_BYTE_COMMAND 0x48 - -#define MAX_READ_TSC_COUNT (2000000000 / 10) - -#define PMIO_INDEX_REG 0xCD6 -#define PMIO_DATA_REG 0xCD7 - -#define SMBUS_BAR_LOW_BYTE 0x2C -#define SMBUS_BAR_HIGH_BYTE 0x2D - -#define SMBUS_STATUS_REG 0x00 -#define SMBUS_SLAVE_STATUS_REG 0x01 -#define SMBUS_COMMAND_REG 0x02 -#define SMBUS_CONTROL_REG 0x03 -#define SMBUS_HOST_CMD_REG 0x04 -#define SMBUS_DATA0_REG 0x05 -#define SMBUS_CLOCK_REG 0x0E - -#define STATUS__COMPLETED_SUCCESSFULLY 0x02 - -#define SMBUS_FREQUENCY_CONST 66000000 / 4 -/*---------------------------------------------------------------------------------------- - * 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 -agesa_ReadSPD (IN UINT32 Func, IN UINT32 Data, IN OUT void *SpdData); - -/* - * This function prototype is only used by the AMD Dinar mainboard. The SMBus - * write is used to select which socket's SPD will be read by the subsequent - * SPD read call. This function is being placed in the F15 wrapper code with - * the other SPD read functions because the next step of the SPD read clean-up - * will be to move the SMBus read/write functions into the southbridge to make - * them more generic. Having the writeSmbusByte() function in the same file as - * the readSmbusByte() function will ensure that the writeSmbusByte() function - * is not overlooked. - */ -UINT8 writeSmbusByte(UINT16 iobase, UINT8 address, UINT8 buffer, int offset); - -/*--------------------------------------------------------------------------------------- - * L O C A L F U N C T I O N S - *--------------------------------------------------------------------------------------- - */ - -#endif diff --git a/src/northbridge/amd/agesa/family15/fam15_callouts.c b/src/northbridge/amd/agesa/family15/fam15_callouts.c index 3b65492..a049a0e 100644 --- a/src/northbridge/amd/agesa/family15/fam15_callouts.c +++ b/src/northbridge/amd/agesa/family15/fam15_callouts.c @@ -23,5 +23,4 @@ #include "Ids.h" #include "OptionsIds.h" #include "heapManager.h" -#include <northbridge/amd/agesa/family15/dimmSpd.h> #include <arch/io.h> diff --git a/src/southbridge/amd/cimx/sb700/Makefile.inc b/src/southbridge/amd/cimx/sb700/Makefile.inc index ff96ca6..7e878e3 100644 --- a/src/southbridge/amd/cimx/sb700/Makefile.inc +++ b/src/southbridge/amd/cimx/sb700/Makefile.inc @@ -21,7 +21,7 @@ # SB700 Platform Files
romstage-y += early.c -romstage-y += smbus.c +romstage-y += smbus.c smbus_spd.c romstage-y += reset.c
ramstage-y += late.c diff --git a/src/southbridge/amd/cimx/sb700/smbus_spd.c b/src/southbridge/amd/cimx/sb700/smbus_spd.c new file mode 100644 index 0000000..5e3e689 --- /dev/null +++ b/src/southbridge/amd/cimx/sb700/smbus_spd.c @@ -0,0 +1,164 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 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 <device/pci_def.h> +#include <device/device.h> +#include <stdlib.h> +#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ + +/* warning: Porting.h includes an open #pragma pack(1) */ +#include "Porting.h" +#include "AGESA.h" +#include "amdlib.h" +#include "chip.h" +#include "smbus_spd.h" + +#include <northbridge/amd/agesa/dimmSpd.h> + +/* uncomment for source level debug - GDB gets really confused otherwise. */ +//#pragma optimize ("", off) + +/** + * Read a single SPD byte. If the first byte is being read, set up the + * address and offset. Following bytes auto increment. + */ +static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, + int offset, int initial_offset) +{ + unsigned int status = -1; + UINT64 time_limit; + + /* clear status register */ + __outbyte(iobase + SMBUS_STATUS_REG, 0xFF); + __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x1F); + + if (offset == initial_offset) { + /* Set offset, set slave address and start reading */ + __outbyte(iobase + SMBUS_CONTROL_REG, offset); + __outbyte(iobase + SMBUS_HOST_CMD_REG, address | READ_BIT); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); + } else { + /* Issue read command - auto increments to next byte */ + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); + } + /* time limit to avoid hanging for unexpected error status */ + time_limit = __rdtsc() + MAX_READ_TSC_COUNT; + while (__rdtsc() <= time_limit) { + status = __inbyte(iobase + SMBUS_STATUS_REG); + if ((status & SMBUS_INTERRUPT_MASK) == 0) + continue; /* SMBusInterrupt not set, keep waiting */ + if ((status & HOSTBUSY_MASK) != 0) + continue; /* HostBusy set, keep waiting */ + break; + } + + if (status != STATUS__COMPLETED_SUCCESSFULLY) + return AGESA_ERROR; + + buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); + return AGESA_SUCCESS; +} + +/** + * Write a single smbus byte. + */ +UINT8 writeSmbusByte(UINT16 iobase, UINT8 address, UINT8 buffer, + int offset) +{ + unsigned int status = -1; + UINT64 time_limit; + + /* clear status register */ + __outbyte(iobase + SMBUS_STATUS_REG, 0xFF); + __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x1F); + + /* set offset, set slave address, set data and start writing */ + __outbyte(iobase + SMBUS_CONTROL_REG, offset); + __outbyte(iobase + SMBUS_HOST_CMD_REG, address & (~READ_BIT)); + __outbyte(iobase + SMBUS_DATA0_REG, buffer); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_WRITE_BYTE_COMMAND); + + /* time limit to avoid hanging for unexpected error status */ + time_limit = __rdtsc() + MAX_READ_TSC_COUNT; + while (__rdtsc() <= time_limit) { + status = __inbyte(iobase + SMBUS_STATUS_REG); + if ((status & SMBUS_INTERRUPT_MASK) == 0) + continue; /* SMBusInterrupt not set, keep waiting */ + if ((status & HOSTBUSY_MASK) != 0) + continue; /* HostBusy set, keep waiting */ + break; + } + + if (status != STATUS__COMPLETED_SUCCESSFULLY) + return AGESA_ERROR; + + return AGESA_SUCCESS; +} + +static void setupFch(UINT16 ioBase) +{ + AMD_CONFIG_PARAMS StdHeader; + UINT32 PciData32; + UINT8 PciData8; + PCI_ADDR PciAddress; + + /* Set SMBus MMIO. */ + PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0x90); + PciData32 = (ioBase & 0xFFFFFFF0) | BIT0; + LibAmdPciWrite(AccessWidth32, PciAddress, &PciData32, &StdHeader); + + /* Enable SMBus MMIO. */ + PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0xD2); + LibAmdPciRead(AccessWidth8, PciAddress, &PciData8, &StdHeader); ; + PciData8 |= BIT0; + LibAmdPciWrite(AccessWidth8, PciAddress, &PciData8, &StdHeader); + + /* Set SMBus clock to 400 KHz */ + __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); +} + +/** + * Read one or more SPD bytes from a DIMM. + * Start with offset zero and read sequentially. + * Reads 128 bytes in 7-8 ms at 400 KHz. + */ +static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, + UINT16 count) +{ + UINT16 index; + UINT8 status; + UINT8 initial_offset = 0; + + setupFch(iobase); + + for (index = initial_offset; index < count; index++) { + status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index, + initial_offset); + if (status != AGESA_SUCCESS) + return status; + } + + return status; +} + +int smbus_readSpd(int spdAddress, char *buf, size_t len) +{ + int ioBase = SMBUS0_BASE_ADDRESS; + setupFch (ioBase); + return readspd (ioBase, spdAddress, buf, len); +} diff --git a/src/southbridge/amd/cimx/sb700/smbus_spd.h b/src/southbridge/amd/cimx/sb700/smbus_spd.h new file mode 100644 index 0000000..107c79f --- /dev/null +++ b/src/southbridge/amd/cimx/sb700/smbus_spd.h @@ -0,0 +1,65 @@ +/* + * 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, MA02110-1301 USA + */ + +#ifndef _SMBUS_SPD_H_ +#define _SMBUS_SPD_H_ + +#define READ_BIT 0x01 + +#define SMBUS_INTERRUPT_MASK 0x02 +#define HOSTBUSY_MASK 0x01 + +#define SMBUS_READ_BYTE_COMMAND 0x48 +#define SMBUS_READ_COMMAND 0x44 + +#define SMBUS_WRITE_BYTE_COMMAND 0x48 + +#define MAX_READ_TSC_COUNT (2000000000 / 10) + +#define PMIO_INDEX_REG 0xCD6 +#define PMIO_DATA_REG 0xCD7 + +#define SMBUS_BAR_LOW_BYTE 0x2C +#define SMBUS_BAR_HIGH_BYTE 0x2D + +#define SMBUS_STATUS_REG 0x00 +#define SMBUS_SLAVE_STATUS_REG 0x01 +#define SMBUS_COMMAND_REG 0x02 +#define SMBUS_CONTROL_REG 0x03 +#define SMBUS_HOST_CMD_REG 0x04 +#define SMBUS_DATA0_REG 0x05 +#define SMBUS_CLOCK_REG 0x0E + +#define STATUS__COMPLETED_SUCCESSFULLY 0x02 + +#define SMBUS_FREQUENCY_CONST 66000000 / 4 + +/* + * This function prototype is only used by the AMD Dinar mainboard. The SMBus + * write is used to select which socket's SPD will be read by the subsequent + * SPD read call. This function is being placed in the F15 wrapper code with + * the other SPD read functions because the next step of the SPD read clean-up + * will be to move the SMBus read/write functions into the southbridge to make + * them more generic. Having the writeSmbusByte() function in the same file as + * the readSmbusByte() function will ensure that the writeSmbusByte() function + * is not overlooked. + */ +UINT8 writeSmbusByte(UINT16 iobase, UINT8 address, UINT8 buffer, int offset); + +#endif diff --git a/src/southbridge/amd/cimx/sb800/Makefile.inc b/src/southbridge/amd/cimx/sb800/Makefile.inc index 1c65eee..95daf70 100644 --- a/src/southbridge/amd/cimx/sb800/Makefile.inc +++ b/src/southbridge/amd/cimx/sb800/Makefile.inc @@ -22,7 +22,7 @@
romstage-y += cfg.c romstage-y += early.c -romstage-y += smbus.c +romstage-y += smbus.c smbus_spd.c romstage-y += reset.c
ramstage-y += cfg.c diff --git a/src/southbridge/amd/cimx/sb800/smbus_spd.c b/src/southbridge/amd/cimx/sb800/smbus_spd.c new file mode 100644 index 0000000..e3f5acc --- /dev/null +++ b/src/southbridge/amd/cimx/sb800/smbus_spd.c @@ -0,0 +1,123 @@ +/* + * 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 <device/pci_def.h> +#include <device/device.h> +#include <stdlib.h> +#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ + +/* warning: Porting.h includes an open #pragma pack(1) */ +#include "Porting.h" +#include "AGESA.h" +#include "chip.h" +#include "smbus_spd.h" + +#include <northbridge/amd/agesa/dimmSpd.h> + +/* uncomment for source level debug - GDB gets really confused otherwise. */ +//#pragma optimize ("", off) + +/** + * Read a single SPD byte. If the first byte is being read, set up the + * address and offset. Following bytes auto increment. + */ +static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, + int offset, int initial_offset) +{ + unsigned int status = -1; + UINT64 time_limit; + + /* clear status register */ + __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); + + if (offset == initial_offset) { + /* Clear slave status, set offset, set slave address and start reading */ + __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x3E); + __outbyte(iobase + SMBUS_CONTROL_REG, offset); + __outbyte(iobase + SMBUS_HOST_CMD_REG, address | READ_BIT); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); + } else { + /* Issue read command - auto increments to next byte */ + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); + } + /* time limit to avoid hanging for unexpected error status */ + time_limit = __rdtsc() + MAX_READ_TSC_COUNT; + while (__rdtsc() <= time_limit) { + status = __inbyte(iobase + SMBUS_STATUS_REG); + if ((status & SMBUS_INTERRUPT_MASK) == 0) + continue; /* SMBusInterrupt not set, keep waiting */ + if ((status & HOSTBUSY_MASK) != 0) + continue; /* HostBusy set, keep waiting */ + break; + } + + if (status != STATUS__COMPLETED_SUCCESSFULLY) + return AGESA_ERROR; + + buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); + return AGESA_SUCCESS; +} + +static void writePmReg(UINT8 reg, UINT8 data) +{ + __outbyte(PMIO_INDEX_REG, reg); + __outbyte(PMIO_DATA_REG, data); +} + +static void setupFch(UINT16 ioBase) +{ + /* set up SMBUS - Set to SMBUS 0 & set base address */ + /* For SB800 & Hudson1 to SB900 & Hudson 2/3 */ + writePmReg(SMBUS_BAR_HIGH_BYTE, ioBase >> 8); + writePmReg(SMBUS_BAR_LOW_BYTE, (ioBase & 0xe0) | 1); + + /* set SMBus clock to 400 KHz */ + __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); +} + +/** + * Read one or more SPD bytes from a DIMM. + * Start with offset zero and read sequentially. + * Reads 128 bytes in 7-8 ms at 400 KHz. + */ +static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, + UINT16 count) +{ + UINT16 index; + UINT8 status; + UINT8 initial_offset = 0; + + setupFch(iobase); + + for (index = initial_offset; index < count; index++) { + status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index, + initial_offset); + if (status != AGESA_SUCCESS) + return status; + } + + return status; +} + +int smbus_readSpd(int spdAddress, char *buf, size_t len) +{ + int ioBase = SMBUS0_BASE_ADDRESS; + setupFch (ioBase); + return readspd (ioBase, spdAddress, buf, len); +} diff --git a/src/southbridge/amd/cimx/sb800/smbus_spd.h b/src/southbridge/amd/cimx/sb800/smbus_spd.h new file mode 100644 index 0000000..30bf83f --- /dev/null +++ b/src/southbridge/amd/cimx/sb800/smbus_spd.h @@ -0,0 +1,51 @@ +/* + * 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, MA02110-1301 USA + */ + +#ifndef _SMBUS_SPD_H_ +#define _SMBUS_SPD_H_ + +#define READ_BIT 0x01 + +#define SMBUS_INTERRUPT_MASK 0x02 +#define HOSTBUSY_MASK 0x01 + +#define SMBUS_READ_BYTE_COMMAND 0x48 +#define SMBUS_READ_COMMAND 0x44 + +#define MAX_READ_TSC_COUNT (2000000000 / 10) + +#define PMIO_INDEX_REG 0xCD6 +#define PMIO_DATA_REG 0xCD7 + +#define SMBUS_BAR_LOW_BYTE 0x2C +#define SMBUS_BAR_HIGH_BYTE 0x2D + +#define SMBUS_STATUS_REG 0x00 +#define SMBUS_SLAVE_STATUS_REG 0x01 +#define SMBUS_COMMAND_REG 0x02 +#define SMBUS_CONTROL_REG 0x03 +#define SMBUS_HOST_CMD_REG 0x04 +#define SMBUS_DATA0_REG 0x05 +#define SMBUS_CLOCK_REG 0x0E + +#define STATUS__COMPLETED_SUCCESSFULLY 0x02 + +#define SMBUS_FREQUENCY_CONST 66000000 / 4 + +#endif diff --git a/src/southbridge/amd/cimx/sb900/Makefile.inc b/src/southbridge/amd/cimx/sb900/Makefile.inc index 6cd392f..c332948 100644 --- a/src/southbridge/amd/cimx/sb900/Makefile.inc +++ b/src/southbridge/amd/cimx/sb900/Makefile.inc @@ -22,7 +22,7 @@
romstage-y += cfg.c romstage-y += early.c -romstage-y += smbus.c +romstage-y += smbus.c smbus_spd.c romstage-y += reset.c
ramstage-y += cfg.c diff --git a/src/southbridge/amd/cimx/sb900/smbus_spd.c b/src/southbridge/amd/cimx/sb900/smbus_spd.c new file mode 100644 index 0000000..3fd4439 --- /dev/null +++ b/src/southbridge/amd/cimx/sb900/smbus_spd.c @@ -0,0 +1,177 @@ +/***************************************************************************** + * + * Copyright (c) 2011, Advanced Micro Devices, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Advanced Micro Devices, Inc. nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ***************************************************************************/ + +#include "Porting.h" +#include "AGESA.h" +#include "amdlib.h" + +#include <northbridge/amd/agesa/dimmSpd.h> + +#define SMBUS_BASE_ADDR 0xB00 + +STATIC +VOID +WritePmReg ( + IN UINT8 Reg, + IN UINT8 Data + ) +{ + __outbyte (0xCD6, Reg); + __outbyte (0xCD7, Data); +} +STATIC +VOID +SetupFch ( + IN UINT16 + IN IoBase + ) +{ + WritePmReg (0x2D, IoBase >> 8); + WritePmReg (0x2C, IoBase | 1); + WritePmReg (0x29, 0x80); + WritePmReg (0x28, 0x61); + /* set SMBus clock to 400 KHz */ + __outbyte (IoBase + 0x0E, 66000000 / 400000 / 4); +} + +/* + * + * ReadSmbusByteData - read a single SPD byte from any offset + * + */ + +STATIC +AGESA_STATUS +ReadSmbusByteData ( + IN UINT16 Iobase, + IN UINT8 Address, + OUT UINT8 *Buffer, + IN UINTN Offset + ) +{ + UINTN 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 +AGESA_STATUS +ReadSmbusByte ( + IN UINT16 Iobase, + IN UINT8 Address, + OUT UINT8 *Buffer + ) +{ + UINTN 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 +AGESA_STATUS +ReadSpd ( + IN UINT16 IoBase, + IN UINT8 SmbusSlaveAddress, + OUT UINT8 *Buffer, + IN UINTN Count + ) +{ + UINTN Index, Status; + + /* read the first byte using offset zero */ + Status = ReadSmbusByteData (IoBase, SmbusSlaveAddress, Buffer, 0); + if (Status) return Status; + + /* read the remaining bytes using auto-increment for speed */ + for (Index = 1; Index < Count; Index++){ + Status = ReadSmbusByte (IoBase, SmbusSlaveAddress, &Buffer [Index]); + if (Status) return Status; + } + return 0; +} + +int smbus_readSpd(int spdAddress, char *buf, size_t len) +{ + SetupFch (SMBUS_BASE_ADDR); + return ReadSpd (SMBUS_BASE_ADDR, spdAddress, (UINT8 *) buf, len); +}
-
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