sdram_init.c
来自「适合KS8695X」· C语言 代码 · 共 1,684 行 · 第 1/4 页
C
1,684 行
/*
* (C) Copyright 2001
* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*************************************************************************
* adaption for the Marvell DB64360 Board
* Ingo Assmus (ingo.assmus@keymile.com)
*
* adaption for the cpci750 Board
* Reinhard Arlt (reinhard.arlt@esd-electronics.com)
*************************************************************************/
/* sdram_init.c - automatic memory sizing */
#include <common.h>
#include <74xx_7xx.h>
#include "../../Marvell/include/memory.h"
#include "../../Marvell/include/pci.h"
#include "../../Marvell/include/mv_gen_reg.h"
#include <net.h>
#include "eth.h"
#include "mpsc.h"
#include "../../Marvell/common/i2c.h"
#include "64360.h"
#include "mv_regs.h"
#undef DEBUG
/* #define DEBUG */
#ifdef CONFIG_PCI
#define MAP_PCI
#endif /* of CONFIG_PCI */
#ifdef DEBUG
#define DP(x) x
#else
#define DP(x)
#endif
int set_dfcdlInit(void); /* setup delay line of Mv64360 */
/* ------------------------------------------------------------------------- */
int
memory_map_bank(unsigned int bankNo,
unsigned int bankBase,
unsigned int bankLength)
{
#ifdef MAP_PCI
PCI_HOST host;
#endif
#ifdef DEBUG
if (bankLength > 0) {
printf("mapping bank %d at %08x - %08x\n",
bankNo, bankBase, bankBase + bankLength - 1);
} else {
printf("unmapping bank %d\n", bankNo);
}
#endif
memoryMapBank(bankNo, bankBase, bankLength);
#ifdef MAP_PCI
for (host=PCI_HOST0;host<=PCI_HOST1;host++) {
const int features=
PREFETCH_ENABLE |
DELAYED_READ_ENABLE |
AGGRESSIVE_PREFETCH |
READ_LINE_AGGRESSIVE_PREFETCH |
READ_MULTI_AGGRESSIVE_PREFETCH |
MAX_BURST_4 |
PCI_NO_SWAP;
pciMapMemoryBank(host, bankNo, bankBase, bankLength);
pciSetRegionSnoopMode(host, bankNo, PCI_SNOOP_WB, bankBase,
bankLength);
pciSetRegionFeatures(host, bankNo, features, bankBase, bankLength);
}
#endif
return 0;
}
#define GB (1 << 30)
/* much of this code is based on (or is) the code in the pip405 port */
/* thanks go to the authors of said port - Josh */
/* structure to store the relevant information about an sdram bank */
typedef struct sdram_info {
uchar drb_size;
uchar registered, ecc;
uchar tpar;
uchar tras_clocks;
uchar burst_len;
uchar banks, slot;
} sdram_info_t;
/* Typedefs for 'gtAuxilGetDIMMinfo' function */
typedef enum _memoryType {SDRAM, DDR} MEMORY_TYPE;
typedef enum _voltageInterface {TTL_5V_TOLERANT, LVTTL, HSTL_1_5V,
SSTL_3_3V, SSTL_2_5V, VOLTAGE_UNKNOWN,
} VOLTAGE_INTERFACE;
typedef enum _max_CL_supported_DDR {DDR_CL_1=1, DDR_CL_1_5=2, DDR_CL_2=4, DDR_CL_2_5=8, DDR_CL_3=16, DDR_CL_3_5=32, DDR_CL_FAULT} MAX_CL_SUPPORTED_DDR;
typedef enum _max_CL_supported_SD {SD_CL_1=1, SD_CL_2, SD_CL_3, SD_CL_4, SD_CL_5, SD_CL_6, SD_CL_7, SD_FAULT} MAX_CL_SUPPORTED_SD;
/* SDRAM/DDR information struct */
typedef struct _gtMemoryDimmInfo
{
MEMORY_TYPE memoryType;
unsigned int numOfRowAddresses;
unsigned int numOfColAddresses;
unsigned int numOfModuleBanks;
unsigned int dataWidth;
VOLTAGE_INTERFACE voltageInterface;
unsigned int errorCheckType; /* ECC , PARITY..*/
unsigned int sdramWidth; /* 4,8,16 or 32 */;
unsigned int errorCheckDataWidth; /* 0 - no, 1 - Yes */
unsigned int minClkDelay;
unsigned int burstLengthSupported;
unsigned int numOfBanksOnEachDevice;
unsigned int suportedCasLatencies;
unsigned int RefreshInterval;
unsigned int maxCASlatencySupported_LoP; /* LoP left of point (measured in ns) */
unsigned int maxCASlatencySupported_RoP; /* RoP right of point (measured in ns)*/
MAX_CL_SUPPORTED_DDR maxClSupported_DDR;
MAX_CL_SUPPORTED_SD maxClSupported_SD;
unsigned int moduleBankDensity;
/* module attributes (true for yes) */
bool bufferedAddrAndControlInputs;
bool registeredAddrAndControlInputs;
bool onCardPLL;
bool bufferedDQMBinputs;
bool registeredDQMBinputs;
bool differentialClockInput;
bool redundantRowAddressing;
/* module general attributes */
bool suportedAutoPreCharge;
bool suportedPreChargeAll;
bool suportedEarlyRasPreCharge;
bool suportedWrite1ReadBurst;
bool suported5PercentLowVCC;
bool suported5PercentUpperVCC;
/* module timing parameters */
unsigned int minRasToCasDelay;
unsigned int minRowActiveRowActiveDelay;
unsigned int minRasPulseWidth;
unsigned int minRowPrechargeTime; /* measured in ns */
int addrAndCommandHoldTime; /* LoP left of point (measured in ns) */
int addrAndCommandSetupTime; /* (measured in ns/100) */
int dataInputSetupTime; /* LoP left of point (measured in ns) */
int dataInputHoldTime; /* LoP left of point (measured in ns) */
/* tAC times for highest 2nd and 3rd highest CAS Latency values */
unsigned int clockToDataOut_LoP; /* LoP left of point (measured in ns) */
unsigned int clockToDataOut_RoP; /* RoP right of point (measured in ns)*/
unsigned int clockToDataOutMinus1_LoP; /* LoP left of point (measured in ns) */
unsigned int clockToDataOutMinus1_RoP; /* RoP right of point (measured in ns)*/
unsigned int clockToDataOutMinus2_LoP; /* LoP left of point (measured in ns) */
unsigned int clockToDataOutMinus2_RoP; /* RoP right of point (measured in ns)*/
unsigned int minimumCycleTimeAtMaxCasLatancy_LoP; /* LoP left of point (measured in ns) */
unsigned int minimumCycleTimeAtMaxCasLatancy_RoP; /* RoP right of point (measured in ns)*/
unsigned int minimumCycleTimeAtMaxCasLatancyMinus1_LoP; /* LoP left of point (measured in ns) */
unsigned int minimumCycleTimeAtMaxCasLatancyMinus1_RoP; /* RoP right of point (measured in ns)*/
unsigned int minimumCycleTimeAtMaxCasLatancyMinus2_LoP; /* LoP left of point (measured in ns) */
unsigned int minimumCycleTimeAtMaxCasLatancyMinus2_RoP; /* RoP right of point (measured in ns)*/
/* Parameters calculated from
the extracted DIMM information */
unsigned int size;
unsigned int deviceDensity; /* 16,64,128,256 or 512 Mbit */
unsigned int numberOfDevices;
uchar drb_size; /* DRAM size in n*64Mbit */
uchar slot; /* Slot Number this module is inserted in */
uchar spd_raw_data[128]; /* Content of SPD-EEPROM copied 1:1 */
#ifdef DEBUG
uchar manufactura[8]; /* Content of SPD-EEPROM Byte 64-71 */
uchar modul_id[18]; /* Content of SPD-EEPROM Byte 73-90 */
uchar vendor_data[27]; /* Content of SPD-EEPROM Byte 99-125 */
unsigned long modul_serial_no; /* Content of SPD-EEPROM Byte 95-98 */
unsigned int manufac_date; /* Content of SPD-EEPROM Byte 93-94 */
unsigned int modul_revision; /* Content of SPD-EEPROM Byte 91-92 */
uchar manufac_place; /* Content of SPD-EEPROM Byte 72 */
#endif
} AUX_MEM_DIMM_INFO;
/*
* translate ns.ns/10 coding of SPD timing values
* into 10 ps unit values
*/
static inline unsigned short
NS10to10PS(unsigned char spd_byte)
{
unsigned short ns, ns10;
/* isolate upper nibble */
ns = (spd_byte >> 4) & 0x0F;
/* isolate lower nibble */
ns10 = (spd_byte & 0x0F);
return(ns*100 + ns10*10);
}
/*
* translate ns coding of SPD timing values
* into 10 ps unit values
*/
static inline unsigned short
NSto10PS(unsigned char spd_byte)
{
return(spd_byte*100);
}
/* This code reads the SPD chip on the sdram and populates
* the array which is passed in with the relevant information */
/* static int check_dimm(uchar slot, AUX_MEM_DIMM_INFO *info) */
static int check_dimm (uchar slot, AUX_MEM_DIMM_INFO * dimmInfo)
{
DECLARE_GLOBAL_DATA_PTR;
unsigned long spd_checksum;
uchar addr = slot == 0 ? DIMM0_I2C_ADDR : DIMM1_I2C_ADDR;
int ret;
unsigned int i, j, density = 1, devicesForErrCheck = 0;
#ifdef DEBUG
unsigned int k;
#endif
unsigned int rightOfPoint = 0, leftOfPoint = 0, mult, div, time_tmp;
int sign = 1, shift, maskLeftOfPoint, maskRightOfPoint;
uchar supp_cal, cal_val;
ulong memclk, tmemclk;
ulong tmp;
uchar trp_clocks = 0, trcd_clocks, tras_clocks, trrd_clocks;
uchar data[128];
memclk = gd->bus_clk;
tmemclk = 1000000000 / (memclk / 100); /* in 10 ps units */
memset (data, 0, sizeof (data));
ret = 0;
DP (puts ("before i2c read\n"));
ret = i2c_read (addr, 0, 2, data, 128);
DP (puts ("after i2c read\n"));
if ((data[64] != 'e') || (data[65] != 's') || (data[66] != 'd')
|| (data[67] != '-') || (data[68] != 'g') || (data[69] != 'm')
|| (data[70] != 'b') || (data[71] != 'h')) {
ret = -1;
}
if ((ret != 0) && (slot == 0)) {
memset (data, 0, sizeof (data));
data[0] = 0x80;
data[1] = 0x08;
data[2] = 0x07;
data[3] = 0x0c;
data[4] = 0x09;
data[5] = 0x01;
data[6] = 0x48;
data[7] = 0x00;
data[8] = 0x04;
data[9] = 0x75;
data[10] = 0x80;
data[11] = 0x02;
data[12] = 0x80;
data[13] = 0x10;
data[14] = 0x08;
data[15] = 0x01;
data[16] = 0x0e;
data[17] = 0x04;
data[18] = 0x0c;
data[19] = 0x01;
data[20] = 0x02;
data[21] = 0x20;
data[22] = 0x00;
data[23] = 0xa0;
data[24] = 0x80;
data[25] = 0x00;
data[26] = 0x00;
data[27] = 0x50;
data[28] = 0x3c;
data[29] = 0x50;
data[30] = 0x32;
data[31] = 0x10;
data[32] = 0xb0;
data[33] = 0xb0;
data[34] = 0x60;
data[35] = 0x60;
data[64] = 'e';
data[65] = 's';
data[66] = 'd';
data[67] = '-';
data[68] = 'g';
data[69] = 'm';
data[70] = 'b';
data[71] = 'h';
ret = 0;
}
/* zero all the values */
memset (dimmInfo, 0, sizeof (*dimmInfo));
/* copy the SPD content 1:1 into the dimmInfo structure */
for (i = 0; i <= 127; i++) {
dimmInfo->spd_raw_data[i] = data[i];
}
if (ret) {
DP (printf ("No DIMM in slot %d [err = %x]\n", slot, ret));
return 0;
} else
dimmInfo->slot = slot; /* start to fill up dimminfo for this "slot" */
#ifdef CFG_DISPLAY_DIMM_SPD_CONTENT
for (i = 0; i <= 127; i++) {
printf ("SPD-EEPROM Byte %3d = %3x (%3d)\n", i, data[i],
data[i]);
}
#endif
#ifdef DEBUG
/* find Manufacturer of Dimm Module */
for (i = 0; i < sizeof (dimmInfo->manufactura); i++) {
dimmInfo->manufactura[i] = data[64 + i];
}
printf ("\nThis RAM-Module is produced by: %s\n",
dimmInfo->manufactura);
/* find Manul-ID of Dimm Module */
for (i = 0; i < sizeof (dimmInfo->modul_id); i++) {
dimmInfo->modul_id[i] = data[73 + i];
}
printf ("The Module-ID of this RAM-Module is: %s\n",
dimmInfo->modul_id);
/* find Vendor-Data of Dimm Module */
for (i = 0; i < sizeof (dimmInfo->vendor_data); i++) {
dimmInfo->vendor_data[i] = data[99 + i];
}
printf ("Vendor Data of this RAM-Module is: %s\n",
dimmInfo->vendor_data);
/* find modul_serial_no of Dimm Module */
dimmInfo->modul_serial_no = (*((unsigned long *) (&data[95])));
printf ("Serial No. of this RAM-Module is: %ld (%lx)\n",
dimmInfo->modul_serial_no, dimmInfo->modul_serial_no);
/* find Manufac-Data of Dimm Module */
dimmInfo->manufac_date = (*((unsigned int *) (&data[93])));
printf ("Manufactoring Date of this RAM-Module is: %d.%d\n", data[93], data[94]); /*dimmInfo->manufac_date */
/* find modul_revision of Dimm Module */
dimmInfo->modul_revision = (*((unsigned int *) (&data[91])));
printf ("Module Revision of this RAM-Module is: %d.%d\n", data[91], data[92]); /* dimmInfo->modul_revision */
/* find manufac_place of Dimm Module */
dimmInfo->manufac_place = (*((unsigned char *) (&data[72])));
printf ("manufac_place of this RAM-Module is: %d\n",
dimmInfo->manufac_place);
#endif
/*------------------------------------------------------------------------------------------------------------------------------*/
/* calculate SPD checksum */
/*------------------------------------------------------------------------------------------------------------------------------*/
spd_checksum = 0;
#if 0 /* test-only */
for (i = 0; i <= 62; i++) {
spd_checksum += data[i];
}
if ((spd_checksum & 0xff) != data[63]) {
printf ("### Error in SPD Checksum !!! Is_value: %2x should value %2x\n", (unsigned int) (spd_checksum & 0xff), data[63]);
hang ();
}
else
printf ("SPD Checksum ok!\n");
#endif /* test-only */
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