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Tyan S8226: Use SPD read code from F15 wrapper 

Changes:
 - Get rid of the s8226 mainboard specific code and use the
   platform generic function wrapper that was added in change
   http://review.coreboot.org/#/c/2777/
   AMD Fam15: Add SPD read functions to wrapper code

 - Move DIMM addresses into devicetree.cb

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.
 - select_socket() and restore_socket() started by duplicating
   sp5100_set_gpio() and sp5100_restore_gpio(), which were in
   dimmSpd.c.  In addition to renaming the functions to more
   specifically state their purpose, some cleanup and magic number
   reduction was done.

Change-Id: I1eaf64986ef4fa3f89aed2b69d3f9c8c913f726f
Signed-off-by: Kimarie Hoot <kimarie.hoot@se-eng.com>
Reviewed-on: http://review.coreboot.org/2827
Tested-by: build bot (Jenkins)
Reviewed-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Kimarie Hoot 2013-03-08 15:31:49 -07:00 committed by Stefan Reinauer
parent eef45f9cfd
commit b37ec540af
4 changed files with 76 additions and 227 deletions
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73
src/mainboard/tyan/s8226/BiosCallOuts.c
View File

@ -23,6 +23,62 @@
#include "Ids.h"
#include "OptionsIds.h"
#include "heapManager.h"
#include <northbridge/amd/agesa/family15/dimmSpd.h>
#include <arch/io.h>
#include <arch/romcc_io.h>
#ifdef __PRE_RAM__
/* These defines are used to select the appropriate socket for the SPD read
* because this is a multi-socket design.
*/
#define PCI_REG_GPIO_48_47_46_37_CNTRL (0xA6)
#define PCI_REG_GPIO_52_to_49_CNTRL (0x50)
#define GPIO_OUT_BIT_GPIO48 (BIT3)
#define GPIO_OUT_BIT_GPIO49 (BIT0)
#define GPIO_OUT_ENABLE_BIT_GPIO48 (BIT7)
#define GPIO_OUT_ENABLE_BIT_GPIO49 (BIT4)
static UINT8 select_socket(UINT8 socket_id)
{
device_t sm_dev = PCI_DEV(0, 0x14, 0); //SMBUS
UINT8 value = 0;
UINT8 gpio52_to_49 = 0;
/* Configure GPIO49,48 to select the desired socket
* GPIO49,48 control the IDTQS3253 S1,S0
* S1 S0 true table
* 0 0 channel 0
* 0 1 channel 1
* 1 0 channel 2 - Socket 0
* 1 1 channel 3 - Socket 1
* Note: Above is abstracted from Schematic. But actually it seems to be other way.
* 1 0 channel 2 - Socket 1
* 1 1 channel 3 - Socket 0
* Note: The DIMMs need to be plugged in from the farthest slot for each channel.
*/
gpio52_to_49 = pci_read_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL);
value = gpio52_to_49 | GPIO_OUT_BIT_GPIO49; // Output of GPIO49 is always forced to "1"
value &= ~(GPIO_OUT_ENABLE_BIT_GPIO49); // 0=Output Enabled, 1=Tristate
pci_write_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL, value);
value = pci_read_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL);
value &= ~(GPIO_OUT_BIT_GPIO48);
value |= (~(socket_id & 1)) << 3; // Output of GPIO48 is inverse of SocketId
value &= ~(GPIO_OUT_ENABLE_BIT_GPIO48); // 0=Output Enabled, 1=Tristate
pci_write_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL, value);
return gpio52_to_49;
}
static void restore_socket(UINT8 original_value)
{
device_t sm_dev = PCI_DEV(0, 0x14, 0); //SMBUS
pci_write_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL, original_value);
// TODO: Restore previous GPIO48 configurations?
//pci_write_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL, gpio48_47_46_37_save);
}
#endif
STATIC BIOS_CALLOUT_STRUCT BiosCallouts[] =
{
@ -81,8 +137,6 @@ STATIC BIOS_CALLOUT_STRUCT BiosCallouts[] =
},
};
extern AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info);
AGESA_STATUS GetBiosCallout (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
UINTN i;
@ -487,7 +541,20 @@ 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, ConfigPtr);
#ifdef __PRE_RAM__
UINT8 original_value = 0;
if (ConfigPtr == NULL)
return AGESA_ERROR;
original_value = select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId);
Status = agesa_ReadSPD (Func, Data, ConfigPtr);
restore_socket(original_value);
#else
Status = AGESA_UNSUPPORTED;
#endif
return Status;
}

2
src/mainboard/tyan/s8226/Makefile.inc
View File

@ -22,7 +22,6 @@ romstage-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += sb700_cfg.c
romstage-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += reset.c
romstage-y += buildOpts.c
romstage-y += agesawrapper.c
romstage-y += dimmSpd.c
romstage-y += BiosCallOuts.c
romstage-y += platform_oem.c
@ -31,7 +30,6 @@ ramstage-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += sb700_cfg.c
ramstage-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += reset.c
ramstage-y += buildOpts.c
ramstage-y += agesawrapper.c
ramstage-y += dimmSpd.c
ramstage-y += BiosCallOuts.c
ramstage-y += platform_oem.c

6
src/mainboard/tyan/s8226/devicetree.cb
View File

@ -121,6 +121,12 @@ chip northbridge/amd/agesa/family15/root_complex
device pci 18.3 on end
device pci 18.4 on end
device pci 18.5 on end #f15
register "spdAddrLookup" = "
{
{ {0xA0, 0xA4, 0xA8}, {0xA2, 0xA6, 0xAA}, }, // socket 0
{ {0xA0, 0xA4, 0xA8}, {0xA2, 0xA6, 0xAA}, }, // socket 1
}"
end #chip northbridge/amd/agesa/family15 # CPU side of HT root complex
end #domain
end #northbridge/amd/agesa/family15/root_complex

222
src/mainboard/tyan/s8226/dimmSpd.c
View File

@ -1,222 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 - 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 "Porting.h"
#include "AGESA.h"
#include "amdlib.h"
#include <arch/io.h>
#include <arch/romcc_io.h>
#include <device/pci_ids.h>
AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info);
#define DIMENSION(array)(sizeof (array)/ sizeof (array [0]))
/* SP5100 GPIO 49-52 contoled by SMBUS PCI_Reg 0x52 */
#define SP5100_GPIO37_46_47_48 0xA6
#define SP5100_GPIO49_52 0x50
/**
* TODO not support all GPIO yet
* @param reg -GPIO Cntrl Register
* @param out -GPIO bitmap
* @param out -GPIO enable bitmap
* @return old setting
*/
static u8 sp5100_set_gpio(u8 reg, u8 out, u8 enable)
{
u8 value, ret;
device_t sm_dev = PCI_DEV(0, 0x14, 0); //SMBUS
value = pci_read_config8(sm_dev, reg);
ret = value;
value &= ~(enable);
value |= out;
value &= ~(enable << 4);
pci_write_config8(sm_dev, reg, value);
return ret;
}
static void sp5100_restore_gpio(u8 reg, u8 value)
{
device_t sm_dev = PCI_DEV(0, 0x14, 0);
pci_write_config8(sm_dev, reg, value);
}
/*-----------------------------------------------------------------------------
*
* SPD address table - porting required
*/
static const UINT8 spdAddressLookup [2] [2] [3] = { // socket, channel, dimm
/* socket 0 */
{
{0xA0, 0xA4, 0xA8},
{0xA2, 0xA6, 0xAA},
},
/* socket 1 */
{
{0xA0, 0xA4, 0xA8},
{0xA2, 0xA6, 0xAA},
},
};
/*-----------------------------------------------------------------------------
*
* 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
outb(0xFF, iobase + 0); // clear error status
outb(0x1F, iobase + 1); // clear error status
outb(offset, iobase + 3); // offset in eeprom
outb(address, iobase + 4); // slave address and read bit
outb(0x48, iobase + 2); // read byte command
// time limit to avoid hanging for unexpected error status (should never happen)
limit = __rdtsc () + 2000000000 / 10;
for (;;)
{
status = inb(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] = inb(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;
outb(0xFF, iobase + 0); // clear error status
outb(0x44, iobase + 2); // read command
// time limit to avoid hanging for unexpected error status
limit = __rdtsc () + 2000000000 / 10;
for (;;)
{
status = inb(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] = inb(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 setupFch (int ioBase)
{
outb(66000000 / 400000 / 4, ioBase + 0x0E); /* set SMBus clock to 400 KHz */
}
AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info)
{
AGESA_STATUS status;
int spdAddress, ioBase;
u8 i2c_channel;
u8 backup;
device_t sm_dev;
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;
i2c_channel = (UINT8) info->SocketId;
/* set IDTQS3253 i2c channel
* GPIO49,48 control the S1,S0
* S1 S0 true table
* 0 0 channel 0
* 0 1 channel 1
* 1 0 channel 2 - Socket 0
* 1 1 channel 3 - Socket 1
* Note: Above is abstracted from Schemetic. But actually it seems to be other way.
* 1 0 channel 2 - Socket 1
* 1 1 channel 3 - Socket 0
* Note: The DIMMs need to be plugged in from the farthest slot for each channel.
*/
backup = sp5100_set_gpio(SP5100_GPIO49_52, 0x1, 0x1);
sp5100_set_gpio(SP5100_GPIO37_46_47_48, (~i2c_channel & 1) << 3, 0x1 << 3);
spdAddress = spdAddressLookup [info->SocketId] [info->MemChannelId] [info->DimmId];
if (spdAddress == 0)
return AGESA_ERROR;
/*
* SMBus Base Address was set during southbridge early setup.
* e.g. sb700 IO mapped SMBUS_IO_BASE 0x6000, CIMX using 0xB00 as default
*/
sm_dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SB700_SM), 0);
ioBase = pci_read_config32(sm_dev, 0x90) & (0xFFFFFFF0);
setupFch(ioBase);
status = readspd(ioBase, spdAddress, (void *)info->Buffer, 256);
sp5100_restore_gpio(SP5100_GPIO49_52, backup);
return status;
}