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extra.c
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extra.c
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// This is the extra stuff added to the memtest+ from memtest.org
// Code from Eric Nelson and Wee
// (Checked without vendor-specific optimization before adding)
/* extra.c -
*
* Released under version 2 of the Gnu Public License.
*
*/
#include "test.h"
#include "screen_buffer.h"
#include "pci.h"
#include "extra.h"
static int ctrl = -1;
struct memory_controller {
unsigned vendor;
unsigned device;
int worked;
void (*change_timing)(int cas, int rcd, int rp, int ras);
};
static struct memory_controller mem_ctr[] = {
/* AMD 64*/
{ 0x1022, 0x1100, 1, change_timing_amd64}, //AMD64 hypertransport link
/* nVidia */
{ 0x10de, 0x01E0, 0, change_timing_nf2}, // nforce2
/* Intel */
{ 0x8086, 0x2570, 0, change_timing_i875}, //Intel i848/i865
{ 0x8086, 0x2578, 0, change_timing_i875}, //Intel i875P
{ 0x8086, 0x2580, 0, change_timing_i925}, //Intel i915P/G
{ 0x8086, 0x2584, 0, change_timing_i925}, //Intel i925X
{ 0x8086, 0x2770, 0, change_timing_i925}, //Intel Lakeport
{ 0x8086, 0x3580, 0, change_timing_i852}, //Intel i852GM - i855GM/GME (But not i855PM)
};
struct drc {
unsigned t_rwt;
unsigned t_wrt;
unsigned t_ref;
unsigned t_en2t;
unsigned t_rwqb;
unsigned t_rct;
unsigned t_rrd;
unsigned t_wr;
};
static struct drc a64;
void find_memctr(void) // Basically copy from the find_controller function
{
unsigned long vendor;
unsigned long device;
unsigned long a64;
int i= 0;
int result;
result = pci_conf_read(0, 0, 0, PCI_VENDOR_ID, 2, &vendor);
result = pci_conf_read(0, 0, 0, PCI_DEVICE_ID, 2, &device);
pci_conf_read(0, 24, 0, 0x00, 4, &a64);
if( a64 == 0x11001022) {
ctrl = 0;
return;
}
if (result == 0) {
for(i = 1; i < sizeof(mem_ctr)/sizeof(mem_ctr[0]); i++) {
if ((mem_ctr[i].vendor == vendor) &&
(mem_ctr[i].device == device))
{
ctrl = i;
return;
}
}
}
ctrl = -1;
}
void a64_parameter(void)
{
ulong dramtlr;
if ( 0 == pci_conf_read(0, 24, 2, 0x88, 4, &dramtlr) )
{
a64.t_rct = 7 + ((dramtlr>>4) & 0x0F);
a64.t_rrd = 0 + ((dramtlr>>16) & 0x7);
a64.t_wr = 2 + ((dramtlr>>28) & 0x1);
}
if ( 0 == pci_conf_read(0, 24, 2, 0x8C, 4, &dramtlr) )
{
a64.t_rwt = 1 + ((dramtlr>>4) & 0x07);
a64.t_wrt = 1 + (dramtlr & 0x1);
a64.t_ref = 1 + ((dramtlr>>11) & 0x3);
}
if ( 0 == pci_conf_read(0, 24, 2, 0x90, 4, &dramtlr) )
{
a64.t_en2t = 1 + ((dramtlr>>28) & 0x1);
a64.t_rwqb = 2 << ((dramtlr>>14) & 0x3);
}
}
void change_timing(int cas, int rcd, int rp, int ras)
{
find_memctr();
if ((ctrl == -1) || ( ctrl > sizeof(mem_ctr)/sizeof(mem_ctr[0])))
{
return;
}
mem_ctr[ctrl].change_timing(cas, rcd, rp, ras);
restart();
}
void amd64_option()
{
int rwt=0, wrt=0, ref=0, en2t=0, rct=0, rrd=0, rwqb=0, wr = 0, flag=0;
if ((ctrl == -1) || ( ctrl > sizeof(mem_ctr)/sizeof(mem_ctr[0])))
{
return;
}
if (mem_ctr[ctrl].worked)
{
a64_parameter();
cprint(POP_Y+1, POP_X+4, "AMD64 options");
cprint(POP_Y+3, POP_X+4, "(1) Rd-Wr Delay : ");
dprint(POP_Y+3, POP_X+24, a64.t_rwt, 2, 0);
cprint(POP_Y+4, POP_X+4, "(2) Wr-Rd Delay : ");
dprint(POP_Y+4, POP_X+24, a64.t_wrt, 2, 0);
cprint(POP_Y+5, POP_X+4, "(3) Rd/Wr Bypass : ");
dprint(POP_Y+5, POP_X+24, a64.t_rwqb, 2, 0);
cprint(POP_Y+6, POP_X+4, "(4) Refresh Rate : ");
switch ( a64.t_ref)
{
case 1 : cprint(POP_Y+6, POP_X+23, "15.6us"); break;
case 2 : cprint(POP_Y+6, POP_X+23, " 7.8us"); break;
case 3 : cprint(POP_Y+6, POP_X+23, " 3.9us"); break;
}
cprint(POP_Y+7, POP_X+4, "(5) Command Rate :");
dprint(POP_Y+7, POP_X+24, a64.t_en2t, 2, 0);
cprint(POP_Y+7, POP_X+26, "T ");
cprint(POP_Y+8, POP_X+4, "(6) Row Cycle Time: ");
dprint(POP_Y+8, POP_X+24, a64.t_rct, 2, 0);
cprint(POP_Y+9, POP_X+4, "(7) RAS-RAS Delay : ");
dprint(POP_Y+9, POP_X+24, a64.t_rrd, 2, 0);
cprint(POP_Y+10, POP_X+4, "(8) Write Recovery: ");
dprint(POP_Y+10, POP_X+24, a64.t_wr, 2, 0);
cprint(POP_Y+11, POP_X+4,"(0) Cancel ");
while(!flag)
{
switch(get_key())
{
case 2:
popclear(POP_SAVE_BUFFER_1);
// read-to-write delay
cprint(POP_Y+3, POP_X+4, "Rd-Wr delay ");
cprint(POP_Y+4, POP_X+4, " (2 - 6 cycles)");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_rwt, 4, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
rwt = getval(POP_Y+7, POP_X+12, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 3:
popclear(POP_SAVE_BUFFER_1);
// read-to-write delay
cprint(POP_Y+3, POP_X+4, "Wr-Rd delay ");
cprint(POP_Y+4, POP_X+4, " (1 - 2 cycles)");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_wrt, 4, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
wrt = getval(POP_Y+7, POP_X+12, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 4:
popclear(POP_SAVE_BUFFER_1);
// Read write queue bypass count
cprint(POP_Y+3, POP_X+4, "Rd/Wr bypass ");
cprint(POP_Y+4, POP_X+4, " (2, 4 or 8 )");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_rwqb, 2, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
rwqb = getval(POP_Y+7, POP_X+11, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 5:
popclear(POP_SAVE_BUFFER_1);
// refresh rate
cprint(POP_Y+3, POP_X+4, "Refresh rate ");
cprint(POP_Y+4, POP_X+4, "Current: ");
switch ( a64.t_ref){
case 1 : cprint(POP_Y+4, POP_X+14, "15.6us"); break;
case 2 : cprint(POP_Y+4, POP_X+14, "7.8us "); break;
case 3 : cprint(POP_Y+4, POP_X+14, "3.9us "); break;
}
cprint(POP_Y+6, POP_X+4, "New: ");
cprint(POP_Y+7, POP_X+4, "(1) 15.6us");
cprint(POP_Y+8, POP_X+4, "(2) 7.8us ");
cprint(POP_Y+9, POP_X+4, "(3) 3.9us ");
ref = getval(POP_Y+6, POP_X+11, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 6:
popclear(POP_SAVE_BUFFER_1);
//Enable 2T command and addressing
cprint(POP_Y+3, POP_X+4, "Command rate:");
cprint(POP_Y+5, POP_X+4, "(1) 1T "); //only supoprted by CG revision and later
cprint(POP_Y+6, POP_X+4, "(2) 2T ");
en2t = getval(POP_Y+3, POP_X+22, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 7:
popclear(POP_SAVE_BUFFER_1);
//Row cycle time
cprint(POP_Y+3, POP_X+4, "Row cycle time: ");
cprint(POP_Y+4, POP_X+4, " (7 - 20 cycles)");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_rct, 4, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
rct = getval(POP_Y+7, POP_X+12, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 8:
popclear(POP_SAVE_BUFFER_1);
//Active-to-Active RAS Delay
cprint(POP_Y+3, POP_X+4, "RAS-RAS Delay: ");
cprint(POP_Y+4, POP_X+4, " (2 - 4 cycles)");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_rrd, 2, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
rrd = getval(POP_Y+7, POP_X+12, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 9:
popclear(POP_SAVE_BUFFER_1);
//Active-to-Active RAS Delay
cprint(POP_Y+3, POP_X+4, "Write Recovery: ");
cprint(POP_Y+4, POP_X+4, " (2 - 3 cycles)");
cprint(POP_Y+5, POP_X+4, "Current: ");
dprint(POP_Y+5, POP_X+14, a64.t_wr, 2, 0);
cprint(POP_Y+7, POP_X+4, "New: ");
wr = getval(POP_Y+7, POP_X+12, 0);
amd64_tweak(rwt, wrt, ref,en2t, rct, rrd, rwqb, wr);
break;
case 11:
case 57:
flag++;
/* 0/CR - Cancel */
break;
}
}
}
}
void get_option()
{
int cas =0, rp=0, rcd=0, ras=0, sflag = 0 ;
while(!sflag)
{
switch(get_key())
{
case 2:
popclear(POP_SAVE_BUFFER_1);
cas = get_cas();
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRCD: ");
rcd = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRP: ");
rp = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRAS: ");
ras = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
change_timing(cas, rcd, rp, ras);
break;
case 3:
popclear(POP_SAVE_BUFFER_1);
cas = get_cas();
change_timing(cas, 0, 0, 0);
sflag++;
break;
case 4:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRCD: ");
rcd =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, rcd, 0, 0);
sflag++;
break;
case 5:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRP: ");
rp =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, 0, rp, 0);
sflag++;
break;
case 6:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRAS: ");
ras =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, 0, 0, ras);
sflag++;
break;
case 7:
popclear(POP_SAVE_BUFFER_1);
amd64_option();
sflag++;
popclear(POP_SAVE_BUFFER_1);
break;
case 8:
break;
case 11:
case 57:
sflag++;
/* 0/CR - Cancel */
break;
}
}
}
void get_option_1()
{
int rp=0, rcd=0, ras=0, sflag = 0 ;
while(!sflag)
{
switch(get_key())
{
case 2:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRCD: ");
rcd = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRP: ");
rp = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRAS: ");
ras = getval(POP_Y+3, POP_X+15, 0);
popclear(POP_SAVE_BUFFER_1);
change_timing(0, rcd, rp, ras);
break;
case 3:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRCD: ");
rcd =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, rcd, 0, 0);
break;
case 4:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRP: ");
rp =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, 0, rp, 0);
break;
case 5:
popclear(POP_SAVE_BUFFER_1);
cprint(POP_Y+3, POP_X+8, "tRAS: ");
ras =getval(POP_Y+3, POP_X+15, 0);
change_timing(0, 0, 0, ras);
break;
case 6:
popclear(POP_SAVE_BUFFER_1);
amd64_option();
sflag++;
popclear(POP_SAVE_BUFFER_1);
break;
case 7:
break;
case 11:
case 57:
sflag++;
/* 0/CR - Cancel */
break;
}
}
}
void get_menu(void)
{
int menu ;
find_memctr();
switch(ctrl)
{
case 0: menu = 2; break;
case 1:
case 2:
case 3:
case 4: menu = 0; break;
case 5: menu = 1; break;
case 6: menu = 0; break;
default: menu = -1; break;
}
if (menu == -1)
{
popclear(POP_SAVE_BUFFER_1);
}
else if (menu == 0)
{
cprint(POP_Y+1, POP_X+2, "Modify Timing:");
cprint(POP_Y+3, POP_X+5, "(1) Modify All ");
cprint(POP_Y+4, POP_X+5, "(2) Modify tCAS ");
cprint(POP_Y+5, POP_X+5, "(3) Modify tRCD ");
cprint(POP_Y+6, POP_X+5, "(4) Modify tRP ");
cprint(POP_Y+7, POP_X+5, "(5) Modify tRAS ");
cprint(POP_Y+8, POP_X+5, "(0) Cancel");
wait_keyup();
get_option();
}
else if (menu == 1)
{
cprint(POP_Y+1, POP_X+2, "Modify Timing:");
cprint(POP_Y+3, POP_X+5, "(1) Modify All ");
cprint(POP_Y+4, POP_X+5, "(2) Modify tRCD ");
cprint(POP_Y+5, POP_X+5, "(3) Modify tRP ");
cprint(POP_Y+6, POP_X+5, "(4) Modify tRAS ");
cprint(POP_Y+7, POP_X+5, "(0) Cancel");
wait_keyup();
get_option();
}
else // AMD64 special menu
{
cprint(POP_Y+1, POP_X+2, "Modify Timing:");
cprint(POP_Y+3, POP_X+5, "(1) Modify All ");
cprint(POP_Y+4, POP_X+5, "(2) Modify tRCD ");
cprint(POP_Y+5, POP_X+5, "(3) Modify tRP ");
cprint(POP_Y+6, POP_X+5, "(4) Modify tRAS ");
cprint(POP_Y+7, POP_X+5, "(5) AMD64 Options");
cprint(POP_Y+8, POP_X+5, "(0) Cancel");
wait_keyup();
get_option_1();
}
}
int get_cas(void)
{
int i852=0, cas=0;
ulong drc, ddr;
long *ptr;
switch(ctrl)
{
case 0: ddr = 1; break;
case 1:
case 2:
case 3: ddr = 1; break;
case 4:
pci_conf_read( 0, 0, 0, 0x44, 4, &ddr);
ddr &= 0xFFFFC000;
ptr=(long*)(ddr+0x120);
drc = *ptr;
if ((drc & 3) == 2) ddr = 2;
else ddr = 1;
break;
case 5: ddr = 2; break;
case 6: ddr = 1; i852 = 1; break;
default: ddr = 1;
}
if (ddr == 1)
{
cprint(POP_Y+3, POP_X+8, "tCAS: ");
cprint(POP_Y+5, POP_X+8, "(1) CAS 2.5 ");
cprint(POP_Y+6, POP_X+8, "(2) CAS 2 ");
if(!i852) {
cprint(POP_Y+7, POP_X+8, "(3) CAS 3 ");
}
cas = getval(POP_Y+3, POP_X+15, 0);
}
else if (ddr == 2)
{
cprint(POP_Y+3, POP_X+8, "tCAS: ");
cprint(POP_Y+5, POP_X+8, "(1) CAS 4 ");
cprint(POP_Y+6, POP_X+8, "(2) CAS 3 ");
cprint(POP_Y+7, POP_X+8, "(3) CAS 5 ");
cas = getval(POP_Y+3, POP_X+15, 0);
}
else
{
cas = -1;
}
popclear(POP_SAVE_BUFFER_1);
return (cas);
}
/////////////////////////////////////////////////////////
// here we go for the exciting timing change part... //
/////////////////////////////////////////////////////////
void change_timing_i852(int cas, int rcd, int rp, int ras) {
ulong dramtlr;
ulong int1, int2;
pci_conf_read(0, 0, 1, 0x60, 4, &dramtlr);
// CAS Latency (tCAS)
int1 = dramtlr & 0xFF9F;
if (cas == 2) { int2 = int1 ^ 0x20; }
else if (cas == 1) { int2 = int1; }
else { int2 = dramtlr; }
// RAS-To-CAS (tRCD)
int1 = int2 & 0xFFF3;
if (rcd == 2) { int2 = int1 ^ 0x8; }
else if (rcd == 3) { int2 = int1 ^ 0x4; }
else if (rcd == 4) { int2 = int1; }
// else { int2 = int2; }
// RAS Precharge (tRP)
int1 = int2 & 0xFFFC;
if (rp == 2) { int2 = int1 ^ 0x2; }
else if (rp == 3) { int2 = int1 ^ 0x1; }
else if (rp == 4) { int2 = int1; }
// else { int2 = int2; }
// RAS Active to precharge (tRAS)
int1 = int2 & 0xF9FF;
if (ras == 5) { int2 = int1 ^ 0x0600; }
else if (ras == 6) { int2 = int1 ^ 0x0400; }
else if (ras == 7) { int2 = int1 ^ 0x0200; }
else if (ras == 8) { int2 = int1; }
// else { int2 = int2; }
pci_conf_write(0, 0, 1, 0x60, 4, int2);
__delay(500);
}
void change_timing_i925(int cas, int rcd, int rp, int ras)
{
ulong int1, dev0, temp;
long *ptr;
//read MMRBAR
pci_conf_read( 0, 0, 0, 0x44, 4, &dev0);
dev0 &= 0xFFFFC000;
ptr=(long*)(dev0+0x114);
temp = *ptr;
// RAS-To-CAS (tRCD)
int1 = temp | 0x70;
if (rcd == 2) { temp = int1 ^ 0x70; }
else if (rcd == 3) { temp = int1 ^ 0x60; }
else if (rcd == 4) { temp = int1 ^ 0x50; }
else if (rcd == 5) { temp = int1 ^ 0x40; }
// else { temp = temp;}
//RAS precharge (tRP)
int1 = temp | 0x7;
if (rp == 2) { temp = int1 ^ 0x7; }
else if (rp == 3) { temp = int1 ^ 0x6; }
else if (rp == 4) { temp = int1 ^ 0x5; }
else if (rp == 5) { temp = int1 ^ 0x4; }
// else { temp = temp;}
if (mem_ctr[ctrl].device == 0x2770 ) // Lakeport?
{
// RAS Active to precharge (tRAS)
int1 = temp | 0xF80000; // bits 23:19
if (ras == 4) { temp = int1 ^ 0xD80000; }
else if (ras == 5) { temp = int1 ^ 0xD00000; }
else if (ras == 6) { temp = int1 ^ 0xC80000; }
else if (ras == 7) { temp = int1 ^ 0xC00000; }
else if (ras == 8) { temp = int1 ^ 0xB80000; }
else if (ras == 9) { temp = int1 ^ 0xB00000; }
else if (ras == 10) { temp = int1 ^ 0xA80000; }
else if (ras == 11) { temp = int1 ^ 0xA00000; }
else if (ras == 12) { temp = int1 ^ 0x980000; }
else if (ras == 13) { temp = int1 ^ 0x900000; }
else if (ras == 14) { temp = int1 ^ 0x880000; }
else if (ras == 15) { temp = int1 ^ 0x800000; }
// else { temp = temp;}
}
else
{
// RAS Active to precharge (tRAS)
int1 = temp | 0xF00000; // bits 23:20
if (ras == 4) { temp = int1 ^ 0xB00000; }
else if (ras == 5) { temp = int1 ^ 0xA00000; }
else if (ras == 6) { temp = int1 ^ 0x900000; }
else if (ras == 7) { temp = int1 ^ 0x800000; }
else if (ras == 8) { temp = int1 ^ 0x700000; }
else if (ras == 9) { temp = int1 ^ 0x600000; }
else if (ras == 10) { temp = int1 ^ 0x500000; }
else if (ras == 11) { temp = int1 ^ 0x400000; }
else if (ras == 12) { temp = int1 ^ 0x300000; }
else if (ras == 13) { temp = int1 ^ 0x200000; }
else if (ras == 14) { temp = int1 ^ 0x100000; }
else if (ras == 15) { temp = int1 ^ 0x000000; }
// else { temp = temp;}
}
// CAS Latency (tCAS)
int1 = temp | 0x0300;
if (cas == 1) { temp = int1 ^ 0x200; } // cas 2.5
else if (cas == 2) { temp = int1 ^ 0x100; }
else if (cas == 3) { temp = int1 ^ 0x300; }
// else { temp = temp;}
*ptr = temp;
__delay(500);
return;
}
void change_timing_Lakeport(int cas, int rcd, int rp, int ras)
{
ulong int1, dev0, temp;
long *ptr;
//read MMRBAR
pci_conf_read( 0, 0, 0, 0x44, 4, &dev0);
dev0 &= 0xFFFFC000;
ptr=(long*)(dev0+0x114);
temp = *ptr;
// RAS-To-CAS (tRCD)
int1 = temp | 0x70;
if (rcd == 2) { temp = int1 ^ 0x70; }
else if (rcd == 3) { temp = int1 ^ 0x60; }
else if (rcd == 4) { temp = int1 ^ 0x50; }
else if (rcd == 5) { temp = int1 ^ 0x40; }
// else { temp = temp;}
//RAS precharge (tRP)
int1 = temp | 0x7;
if (rp == 2) { temp = int1 ^ 0x7; }
else if (rp == 3) { temp = int1 ^ 0x6; }
else if (rp == 4) { temp = int1 ^ 0x5; }
else if (rp == 5) { temp = int1 ^ 0x4; }
// else { temp = temp;}
// CAS Latency (tCAS)
int1 = temp | 0x0300;
if (cas == 1) { temp = int1 ^ 0x200; } // cas 2.5
else if (cas == 2) { temp = int1 ^ 0x100; }
else if (cas == 3) { temp = int1 ^ 0x300; }
// else { temp = temp;}
*ptr = temp;
__delay(500);
return;
}
void change_timing_i875(int cas, int rcd, int rp, int ras){
ulong int1, dev6, temp;
long *ptr;
/* Read the MMR Base Address & Define the pointer from the BAR6 overflow register */
pci_conf_read( 0, 6, 0, 0x10, 4, &dev6);
ptr=(long*)(dev6+0x60);
temp = *ptr;
// RAS-To-CAS (tRCD)
int1 = temp | 0xC;
if (rcd == 2) { temp = int1 ^ 0x4; }
else if (rcd == 3) { temp = int1 ^ 0x8; }
else if (rcd == 4) { temp = int1 ^ 0xC; }
else if (rcd == 5) { temp = int1 ^ 0xC; }
// else { temp = temp;}
//RAS precharge (tRP)
int1 = temp | 0x3;
if (rp == 2) { temp = int1 ^ 0x1; }
else if (rp == 3) { temp = int1 ^ 0x2; }
else if (rp == 4) { temp = int1 ^ 0x3; }
else if (rp == 5) { temp = int1 ^ 0x3; }
// else { temp = temp;}
// RAS Active to precharge (tRAS)
int1 = temp | 0x380;
if (ras == 5) { temp = int1 ^ 0x100; }
else if (ras == 6) { temp = int1 ^ 0x180; }
else if (ras == 7) { temp = int1 ^ 0x200; }
else if (ras == 8) { temp = int1 ^ 0x280; }
else if (ras == 9) { temp = int1 ^ 0x300; }
else if (ras == 10) { temp = int1 ^ 0x380; }
// else { temp = temp;}
// CAS Latency (tCAS)
int1 = temp | 0x60;
if (cas == 1) { temp = int1 ^ 0x60; } // cas 2.5
else if (cas == 2) { temp = int1 ^ 0x40; }
else if (cas == 3) { temp = int1 ^ 0x20; }
// else { temp = temp; }
*ptr = temp;
__delay(500);
return;
}
void change_timing_nf2(int cas, int rcd, int rp, int ras) {
ulong dramtlr, dramtlr2;
ulong int1, int2;
pci_conf_read(0, 0, 1, 0x90, 4, &dramtlr);
pci_conf_read(0, 0, 1, 0xA0, 4, &dramtlr2);
// CAS Latency (tCAS)
int1 = dramtlr2 | 0x0070;
if (cas == 1) { int2 = int1 ^ 0x10; } // cas = 2.5
else if (cas == 2) { int2 = int1 ^ 0x50; }
else if (cas == 3) { int2 = int1 ^ 0x40; }
else { int2 = dramtlr2; }
pci_conf_write(0, 0, 1, 0xA0, 4, int2);
// RAS-To-CAS (tRCD)
int1 = dramtlr | 0x700000;
if (rcd == 2) { int2 = int1 ^ 0x500000; }
else if (rcd == 3) { int2 = int1 ^ 0x400000; }
else if (rcd == 4) { int2 = int1 ^ 0x300000; }
else if (rcd == 5) { int2 = int1 ^ 0x200000; }
else if (rcd == 6) { int2 = int1 ^ 0x100000; }
else { int2 = dramtlr;}
// RAS Precharge (tRP)
int1 = int2 | 0x70000000;
if (rp == 2) { int2 = int1 ^ 0x50000000; }
else if (rp == 3) { int2 = int1 ^ 0x40000000; }
else if (rp == 4) { int2 = int1 ^ 0x30000000; }
else if (rp == 5) { int2 = int1 ^ 0x20000000; }
else if (rp == 6) { int2 = int1 ^ 0x10000000; }
// else { int2 = int2;}
// RAS Active to precharge (tRAS)
int1 = int2 | 0x78000;
if (ras == 4) { int2 = int1 ^ 0x58000; }
else if (ras == 5) { int2 = int1 ^ 0x50000; }
else if (ras == 6) { int2 = int1 ^ 0x48000; }
else if (ras == 7) { int2 = int1 ^ 0x40000; }
else if (ras == 8) { int2 = int1 ^ 0x38000; }
else if (ras == 9) { int2 = int1 ^ 0x30000; }
else if (ras == 10) { int2 = int1 ^ 0x28000; }
else if (ras == 11) { int2 = int1 ^ 0x20000; }
else if (ras == 12) { int2 = int1 ^ 0x18000; }
else if (ras == 13) { int2 = int1 ^ 0x10000; }
else if (ras == 14) { int2 = int1 ^ 0x08000; }
// else { int2 = int2;}
pci_conf_write(0, 0, 1, 0x90, 4, int2);
__delay(500);
}
void change_timing_amd64(int cas, int rcd, int rp, int ras) {
ulong dramtlr;
ulong int1= 0x0;
pci_conf_read(0, 24, 2, 0x88, 4, &dramtlr);
// RAS-To-CAS (tRCD)
int1 = dramtlr | 0x7000;
if (rcd == 2) { dramtlr = int1 ^ 0x5000; }
else if (rcd == 3) { dramtlr = int1 ^ 0x4000; }
else if (rcd == 4) { dramtlr = int1 ^ 0x3000; }
else if (rcd == 5) { dramtlr = int1 ^ 0x2000; }
else if (rcd == 6) { dramtlr = int1 ^ 0x1000; }
else if (rcd == 1) { dramtlr = int1 ^ 0x6000; }
// else { dramtlr = dramtlr;}
//RAS precharge (tRP)
int1 = dramtlr | 0x7000000;
if (rp == 2) { dramtlr = int1 ^ 0x5000000; }
else if (rp == 3) { dramtlr = int1 ^ 0x4000000; }
else if (rp == 1) { dramtlr = int1 ^ 0x6000000; }
else if (rp == 4) { dramtlr = int1 ^ 0x3000000; }
else if (rp == 5) { dramtlr = int1 ^ 0x2000000; }
else if (rp == 6) { dramtlr = int1 ^ 0x1000000; }
// else { dramtlr = dramtlr;}
// RAS Active to precharge (tRAS)
int1 = dramtlr | 0xF00000;
if (ras == 5) { dramtlr = int1 ^ 0xA00000; }
else if (ras == 6) { dramtlr = int1 ^ 0x900000; }
else if (ras == 7) { dramtlr = int1 ^ 0x800000; }
else if (ras == 8) { dramtlr = int1 ^ 0x700000; }
else if (ras == 9) { dramtlr = int1 ^ 0x600000; }
else if (ras == 10) { dramtlr = int1 ^ 0x500000; }
else if (ras == 11) { dramtlr = int1 ^ 0x400000; }
else if (ras == 12) { dramtlr = int1 ^ 0x300000; }
else if (ras == 13) { dramtlr = int1 ^ 0x200000; }
else if (ras == 14) { dramtlr = int1 ^ 0x100000; }
// else { dramtlr = dramtlr;}
// CAS Latency (tCAS)
int1 = dramtlr | 0x7; // some changes will cause the system hang, tried Draminit to no avail
if (cas == 1) { dramtlr = int1 ^ 0x2; } // cas 2.5
else if (cas == 2) { dramtlr = int1 ^ 0x6; }
else if (cas == 3) { dramtlr = int1 ^ 0x5; }
else if (cas == 4) { dramtlr = int1 ^ 0x7; } //cas 1.5 on a64
// else { dramtlr = dramtlr; }
// pci_conf_read(0, 24, 2, 0x90, 4, &dramcr);// use dram init
pci_conf_write(0, 24, 2, 0x88, 4, dramtlr);
__delay(500);
////////////////////////////////////////////////////////////////
// trying using the draminit, but do not work
}
// copy from lib.c code to add delay to chipset timing modification
void __delay(ulong loops)
{
int d0;
__asm__ __volatile__(
"\tjmp 1f\n"
".align 16\n"
"1:\tjmp 2f\n"
".align 16\n"
"2:\tdecl %0\n\tjns 2b"
:"=&a" (d0)
:"0" (loops));
}
void amd64_tweak(int rwt, int wrt, int ref, int en2t, int rct, int rrd, int rwqb, int wr)
{
ulong dramtlr;
ulong int1= 0x0;
pci_conf_read(0, 24, 2, 0x88, 4, &dramtlr);
// Row Cycle time
int1 = dramtlr | 0xF0;
if (rct == 7 ) { dramtlr = int1 ^ 0xF0; }
else if (rct == 8 ) { dramtlr = int1 ^ 0xE0; }
else if (rct == 9 ) { dramtlr = int1 ^ 0xD0; }
else if (rct == 10) { dramtlr = int1 ^ 0xC0; }
else if (rct == 11) { dramtlr = int1 ^ 0xB0; }
else if (rct == 12) { dramtlr = int1 ^ 0xA0; }
else if (rct == 13) { dramtlr = int1 ^ 0x90; }
else if (rct == 14) { dramtlr = int1 ^ 0x80; }
else if (rct == 15) { dramtlr = int1 ^ 0x70; }
else if (rct == 16) { dramtlr = int1 ^ 0x60; }
else if (rct == 17) { dramtlr = int1 ^ 0x50; }
else if (rct == 18) { dramtlr = int1 ^ 0x40; }
else if (rct == 19) { dramtlr = int1 ^ 0x30; }
else if (rct == 20) { dramtlr = int1 ^ 0x20; }
// else { dramtlr = dramtlr;}
//Active-avtive ras-ras delay
int1 = dramtlr | 0x70000;
if (rrd == 2) { dramtlr = int1 ^ 0x50000; } // 2 bus clocks
else if (rrd == 3) { dramtlr = int1 ^ 0x40000; } // 3 bus clocks
else if (rrd == 4) { dramtlr = int1 ^ 0x30000; } // 4 bus clocks
// else { dramtlr = dramtlr;}
//Write recovery time
int1 = dramtlr | 0x10000000;
if (wr == 2) { dramtlr = int1 ^ 0x10000000; } // 2 bus clocks
else if (wr == 3) { dramtlr = int1 ^ 0x00000000; } // 3 bus clocks
// else { dramtlr = dramtlr;}
pci_conf_write(0, 24, 2, 0x88, 4, dramtlr);
__delay(500);
//////////////////////////////////////////////
pci_conf_read(0, 24, 2, 0x8C, 4, &dramtlr);
// Write-to read delay
int1 = dramtlr | 0x1;
if (wrt == 2) { dramtlr = int1 ^ 0x0; }
else if (wrt == 1) { dramtlr = int1 ^ 0x1; }
// else { dramtlr = dramtlr;}
// Read-to Write delay
int1 = dramtlr | 0x70;
if (rwt == 1) { dramtlr = int1 ^ 0x70; }
else if (rwt == 2) { dramtlr = int1 ^ 0x60; }
else if (rwt == 3) { dramtlr = int1 ^ 0x50; }
else if (rwt == 4) { dramtlr = int1 ^ 0x40; }
else if (rwt == 5) { dramtlr = int1 ^ 0x30; }
else if (rwt == 6) { dramtlr = int1 ^ 0x20; }
// else { dramtlr = dramtlr;}
//Refresh Rate
int1 = dramtlr | 0x1800;
if (ref == 1) { dramtlr = int1 ^ 0x1800; } // 15.6us
else if (ref == 2) { dramtlr = int1 ^ 0x1000; } // 7.8us
else if (ref == 3) { dramtlr = int1 ^ 0x0800; } // 3.9us
// else { dramtlr = dramtlr;}
pci_conf_write(0, 24, 2, 0x8c, 4, dramtlr);
__delay(500);
/////////////////////////////////////
pci_conf_read(0, 24, 2, 0x90, 4, &dramtlr);
// Enable 2t command
int1 = dramtlr | 0x10000000;
if (en2t == 2) { dramtlr = int1 ^ 0x00000000; } // 2T
else if (en2t == 1) { dramtlr = int1 ^ 0x10000000; } // 1T
// else { dramtlr = dramtlr;}
// Read Write queue bypass count
int1 = dramtlr | 0xC000;
if (rwqb == 2) { dramtlr = int1 ^ 0xC000; }
else if (rwqb == 4) { dramtlr = int1 ^ 0x8000; }
else if (rwqb == 8) { dramtlr = int1 ^ 0x4000; }
else if (rwqb == 16) { dramtlr = int1 ^ 0x0000; }
// else { dramtlr = dramtlr;}
pci_conf_write(0, 24, 2, 0x90, 4, dramtlr);
__delay(500);
restart();
}