summaryrefslogtreecommitdiff
path: root/src/mainboard/amd/persimmon/dimmSpd.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mainboard/amd/persimmon/dimmSpd.c')
-rw-r--r--src/mainboard/amd/persimmon/dimmSpd.c209
1 files changed, 103 insertions, 106 deletions
diff --git a/src/mainboard/amd/persimmon/dimmSpd.c b/src/mainboard/amd/persimmon/dimmSpd.c
index 2bd27d6f42..1343ae94e2 100644
--- a/src/mainboard/amd/persimmon/dimmSpd.c
+++ b/src/mainboard/amd/persimmon/dimmSpd.c
@@ -9,12 +9,12 @@
*
* 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
+ * 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
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "Porting.h"
@@ -30,19 +30,19 @@ AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PA
* 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
- },
- };
+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
+ },
+};
/*-----------------------------------------------------------------------------
*
@@ -50,117 +50,114 @@ static const UINT8 spdAddressLookup [2] [2] [4] = // socket, channel, dimm
*/
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;
- }
+{
+ 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
+ * 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;
- }
+{
+ 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.
+ * 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;
+{
+ int index, error;
- /* read the first byte using offset zero */
- error = readSmbusByteData (iobase, SmbusSlaveAddress, buffer, 0);
- if (error) return 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;
- }
+ /* 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;
- }
+ return 0;
+}
static void writePmReg (int reg, int data)
- {
- __outbyte (0xCD6, reg);
- __outbyte (0xCD7, 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
- }
+{
+ 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 = 0xB00;
- setupFch (ioBase);
- return readspd (ioBase, spdAddress, (void *) info->Buffer, 128);
- }
+{
+ 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 = 0xB00;
+ setupFch (ioBase);
+ return readspd (ioBase, spdAddress, (void *) info->Buffer, 128);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-14 22:33:34 +0000