diff options
Diffstat (limited to 'src/northbridge/amd/agesa/family12/dimmSpd.c')
| -rw-r--r-- | src/northbridge/amd/agesa/family12/dimmSpd.c | 177 |
1 files changed, 8 insertions, 169 deletions
diff --git a/src/northbridge/amd/agesa/family12/dimmSpd.c b/src/northbridge/amd/agesa/family12/dimmSpd.c index 55fb2c3b22..3ac4d7d638 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; } |