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Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-47 

Creator:  Ronald G. Minnich <rminnich@lanl.gov>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1963 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
arch import user (historical) 2005-07-06 17:16:15 +00:00
parent 52871c4ad5
commit 897c78bd15
2 changed files with 324 additions and 92 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

378
src/cpu/amd/sc520/raminit.c
View File

@ -45,6 +45,7 @@
/* Austin, TX 78741 http://www.amd.com/html/support/techsup.html*/
/* ============================================================================*/
#define OUTC(addr, val) *(unsigned char *)(addr) = (val)
@ -60,26 +61,26 @@ setupsc520(void){
*cp = 0;
/*set the GP CS offset*/
sp = (unsigned short *)0xfffefc08;
*sp = 0x00001;
cp = (unsigned char *)0xfffefc08;
*cp = 0x00001;
/*set the GP CS width*/
sp = (unsigned short *)0xfffefc09;
*sp = 0x00003;
cp = (unsigned char *)0xfffefc09;
*cp = 0x00003;
/*set the GP CS width*/
sp = (unsigned short *)0xfffefc0a;
*sp = 0x00001;
cp = (unsigned char *)0xfffefc0a;
*cp = 0x00001;
/*set the RD pulse width*/
sp = (unsigned short *)0xfffefc0b;
*sp = 0x00003;
/*set the GP RD offse*/
sp = (unsigned short *)0xfffefc0c;
*sp = 0x00001;
cp = (unsigned char *)0xfffefc0b;
*cp = 0x00003;
/*set the GP RD offset */
cp = (unsigned char *)0xfffefc0c;
*cp = 0x00001;
/*set the GP WR pulse width*/
sp = (unsigned short *)0xfffefc0d;
*sp = 0x00003;
cp = (unsigned char *)0xfffefc0d;
*cp = 0x00003;
/*set the GP WR offset*/
sp = (unsigned short *)0xfffefc0e;
*sp = 0x00001;
cp = (unsigned char *)0xfffefc0e;
*cp = 0x00001;
/* set up the GP IO pins*/
/*set the GPIO directionreg*/
sp = (unsigned short *)0xfffefc2c;
@ -143,14 +144,6 @@ else
; set up a PAR to allow access to the 680 leds
; WriteMMCR( 0xc4,0x28000680); // PAR15
*/
/*set PAR 15 for access to led 680*/
/* skip hairy pci hack for now *
sp = (unsigned short *)0xfffef0c4;
mov eax,028000680h
mov dx,0680h
*sp = 0x02; ; output a 2 to led 680
out dx,ax
*/
/*; set the uart baud rate clocks to the normal 1.8432 MHz.*/
cp = (unsigned char *)0xfffefcc0;
*cp = 4; /* uart 1 clock source */
@ -205,7 +198,7 @@ else
*par++ = 0x341f03e0; /*PAR12: GP BUS IO:CS5:Base 0x3e0, size 0x1f:*/
*par++ = 0xe41c00c0; /*PAR13: SDRAM:code:cache:nowrite:Base 0xc0000, size 0x7000:*/
*par++ = 0x545c00c8; /*PAR14: GP BUS MEM:CS5:Base 0xc8, size 0x5c:*/
*par++ = 0x8a020200; /*PAR15: BOOTCS:code:nocache:write:Base 0x2000000, size 0x80000:*/
// *par++ = 0x8a020200; /*PAR15: BOOTCS:code:nocache:write:Base 0x2000000, size 0x80000:*/
}
@ -216,12 +209,7 @@ else
*
*/
#define DRCCTL *(char*)0x0fffef010 /* DRAM control register*/
#define DRCTMCTL *(char*)0x0fffef012 /* DRAM timing control register*/
#define DRCCFG *(char*)0x0fffef014 /* DRAM bank configuration register*/
#define DRCBENDADR *(char*)0x0fffef018 /* DRAM bank ending address register*/
#define ECCCTL *(char*)0x0fffef020 /* DRAM ECC control register*/
#define DBCTL *(char*)0x0fffef040 /* DRAM buffer control register*/
#define CACHELINESZ 0x00000010 /* size of our cache line (read buffer)*/
@ -240,23 +228,72 @@ else
#define COL10_DATA 0x0a0a0a0a /* 10 col data*/
#define COL09_DATA 0x09090909 /* 9 col data*/
#define COL08_DATA 0x08080808 /* 8 col data*/
#define ROW14_DATA 0x3f3f3f3f /* 14 row data (MASK)*/
#define ROW13_DATA 0x1f1f1f1f /* 13 row data (MASK)*/
#define ROW12_DATA 0x0f0f0f0f /* 12 row data (MASK)*/
#define ROW11_DATA 0x07070707 /* 11 row data/also bank switch (MASK)*/
#define ROW10_DATA 0xaaaaaaaa /* 10 row data/also bank switch (MASK)*/
#define dummy_write() *(short *)CACHELINESZ=0x1010
void
dummy_write(void){
volatile unsigned short *ptr = (volatile unsigned short *)CACHELINESZ;
*ptr = 0;
}
void udelay(int microseconds) {
void sc520_udelay(int microseconds) {
volatile int x;
for(x = 0; x < 1000; x++)
;
}
struct ramctl {
unsigned char drcctl;
unsigned char pad1;
unsigned char drcmctl;
unsigned char pad2;
unsigned char drccfg;
unsigned char pad[3];
unsigned char drcbendadr[4];
};
#define RAMCTL (struct ramctl *) 0xfffef010
static void dumpram(void){
struct ramctl *ram = RAMCTL;
print_err("ctl "); print_err_hex8(ram->drcctl); print_err("\r\n");
print_err("mctl "); print_err_hex8(ram->drcmctl); print_err("\r\n");
print_err("cfg "); print_err_hex8(ram->drccfg); print_err("\r\n");
print_err("bendadr0 "); print_err_hex8(ram->drcbendadr[0]); print_err("\r\n");
print_err("bendadr1 "); print_err_hex8(ram->drcbendadr[1]); print_err("\r\n");
print_err("bendadr2 "); print_err_hex8(ram->drcbendadr[2]); print_err("\r\n");
print_err("bendadr3"); print_err_hex8(ram->drcbendadr[3]); print_err("\r\n");
}
struct eccctl {
unsigned char eccctl;
unsigned char eccsta;
unsigned char eccckbpos;
unsigned char ecccktest;
unsigned char eccsbadd;
unsigned char pad[3];
unsigned char eccmbad;
};
#define ECCCTL (struct eccctl *) 0xfffef020
#define DBCTL (unsigned char *) 0xfffef040
#if 0
int nextbank(int bank)
{
int rows,banks, cols, i, ending_adr;
struct ramctl *ram = RAMCTL;
struct eccctl *ecc = ECCCTL;
unsigned char *dbctl = DBCTL;
int rows,banks, cols, i;
unsigned char ending_adr;
/* this is really ugly, it is right from assembly code.
* we need to clean it up later
@ -267,7 +304,7 @@ start:
COL11_ADR=COL11_DATA;
if(COL11_ADR!=COL11_DATA)
goto bad_ram;
//while(1)
print_err("11\n");
/* write col 10 wrap adr */
COL10_ADR=COL10_DATA;
@ -381,94 +418,319 @@ print_err("4b\n");
bad_reint:
/* issue all banks recharge */
DRCCTL=0x02;
ram->drcctl=0x02;
dummy_write();
/* update ending address register */
DRCBENDADR=ending_adr;
ram->drcbendadr[bank] = ending_adr;
/* update config register */
DRCCFG = (banks = 4 ? 8 : 0) | cols & 3;
ram->drccfg = (banks = 4 ? 8 : 0) | cols & 3;
/* skip the rest for now */
bank = 0;
// DRCCFG=DRCCFG&YYY|ZZZZ;
// *drccfg=*drccfg&YYY|ZZZZ;
if(bank!=0) {
bank--;
//*(&DRCBENDADR+XXYYXX)=0xff;
//*(&*drcbendadr+XXYYXX)=0xff;
goto start;
}
/* set control register to NORMAL mode */
DRCCTL=0x00;
ram->drcctl=0x00;
dummy_write();
return bank;
bad_ram:
print_info("bad ram!\r\n");
}
#endif
/* cache is assumed to be disabled */
int sizemem(void)
{
int i;
struct ramctl *ram = RAMCTL;
struct eccctl *ecc = ECCCTL;
unsigned char *dbctl = DBCTL;
int rows,banks, cols, i, bank;
unsigned char ending_adr, al;
/* initialize dram controller registers */
DBCTL=0; /* disable write buffer/read-ahead buffer */
ECCCTL=0; /* disable ECC */
DRCTMCTL=0x1e; /* Set SDRAM timing for slowest speed. */
*dbctl = 0; /* disable write buffer/read-ahead buffer */
ecc->eccctl = 0;
ram->drcmctl = 0x1e; /* Set SDRAM timing for slowest speed. */
/* setup loop to do 4 external banks starting with bank 3 */
print_err("sizemem\n");
/* enable last bank and setup ending address
* register for max ram in last bank
*/
DRCBENDADR=0x0ff000000;
ram->drcbendadr[3]=0x0ff000000;
/* setup dram register for all banks
* with max cols and max banks
*/
DRCCFG=0xbbbb;
ram->drccfg=0xbbbb;
dumpram();
/* issue a NOP to all DRAMs */
/* Asetup DRAM control register with Disable refresh,
/* Setup DRAM control register with Disable refresh,
* disable write buffer Test Mode and NOP command select
*/
DRCCTL=0x01;
ram->drcctl=0x01;
/* dummy write for NOP to take effect */
dummy_write();
print_err("NOP\n");
/* 100? 200? */
udelay(100);
//sc520_udelay(100);
print_err("after sc520_udelay\r\n");
/* issue all banks precharge */
DRCCTL=0x02;
ram->drcctl=0x02;
print_err("set *drcctl to 2 \r\n");
dummy_write();
print_err("PRE\n");
/* issue 2 auto refreshes to all banks */
DRCCTL=0x04;
ram->drcctl=0x04;
dummy_write();
print_err("AUTO1\n");
dummy_write();
print_err("AUTO2\n");
/* issue LOAD MODE REGISTER command */
DRCCTL=0x03;
ram->drcctl=0x03;
dummy_write();
print_err("LOAD MODE REG\n");
DRCCTL=0x04;
for (i=0; i<8; i++) /* refresh 8 times */
ram->drcctl=0x04;
for (i=0; i<8; i++) /* refresh 8 times */{
dummy_write();
print_err("dummy write\r\n");
}
print_err("8 dummy writes\n");
/* set control register to NORMAL mode */
DRCCTL=0x00;
ram->drcctl=0x00;
print_err("normal\n");
print_err("HI done normal\r\n");
bank = 3;
/* this is really ugly, it is right from assembly code.
* we need to clean it up later
*/
start:
/* write col 11 wrap adr */
COL11_ADR=COL11_DATA;
if(COL11_ADR!=COL11_DATA)
goto bad_ram;
print_err("11\n");
/* write col 10 wrap adr */
COL10_ADR=COL10_DATA;
if(COL10_ADR!=COL10_DATA)
goto bad_ram;
print_err("10\n");
/* write col 9 wrap adr */
COL09_ADR=COL09_DATA;
if(COL09_ADR!=COL09_DATA)
goto bad_ram;
print_err("9\n");
/* write col 8 wrap adr */
COL08_ADR=COL08_DATA;
if(COL08_ADR!=COL08_DATA)
goto bad_ram;
print_err("8\n");
/* write row 14 wrap adr */
ROW14_ADR=ROW14_DATA;
if(ROW14_ADR!=ROW14_DATA)
goto bad_ram;
print_err("14\n");
/* write row 13 wrap adr */
ROW13_ADR=ROW13_DATA;
if(ROW13_ADR!=ROW13_DATA)
goto bad_ram;
print_err("13\n");
/* write row 12 wrap adr */
ROW12_ADR=ROW12_DATA;
if(ROW12_ADR!=ROW12_DATA)
goto bad_ram;
print_err("12\n");
/* write row 11 wrap adr */
ROW11_ADR=ROW11_DATA;
if(ROW11_ADR!=ROW11_DATA)
goto bad_ram;
print_err("11\n");
/* write row 10 wrap adr */
ROW10_ADR=ROW10_DATA;
if(ROW10_ADR!=ROW10_DATA)
goto bad_ram;
print_err("10\n");
/*
* read data @ row 12 wrap adr to determine # banks,
* and read data @ row 14 wrap adr to determine # rows.
* if data @ row 12 wrap adr is not AA, 11 or 12 we have bad RAM.
* if data @ row 12 wrap == AA, we only have 2 banks, NOT 4
* if data @ row 12 wrap == 11 or 12, we have 4 banks
*/
banks=2;
if (ROW12_ADR != ROW10_DATA) {
banks=4;
print_err("4b\n");
if(ROW12_ADR != ROW11_DATA) {
if(ROW12_ADR != ROW12_DATA)
goto bad_ram;
}
}
/* validate row mask */
rows=ROW14_ADR;
if (rows<ROW11_DATA)
goto bad_ram;
if (rows>ROW14_DATA)
goto bad_ram;
/* verify all 4 bytes of dword same */
if(rows&0xffff!=(rows>>16)&0xffff)
goto bad_ram;
if(rows&0xff!=(rows>>8)&0xff)
goto bad_ram;
/* now just get one of them */
rows &= 0xff;
print_err("rows"); print_err_hex32(rows); print_err("\n");
/* validate column data */
cols=COL11_ADR;
if(cols<COL08_DATA)
goto bad_ram;
if (cols>COL11_DATA)
goto bad_ram;
/* verify all 4 bytes of dword same */
if(cols&0xffff!=(cols>>16)&0xffff)
goto bad_ram;
if(cols&0xff!=(cols>>8)&0xff)
goto bad_ram;
print_err("cols"); print_err_hex32(cols); print_err("\n");
cols -= COL08_DATA;
/* cols now is in the range of 0 1 2 3 ...
*/
i = cols&3;
// i = cols + rows;
/* wacky end addr calculation */
/*
al = 3;
al -= (i & 0xff);k
*/
/* what a fookin' mess this is */
if(banks==4)
i+=8; /* <-- i holds merged value */
/* i now has the col width in bits 0-1 and the bank count (2 or 4)
* in bit 3.
* this is the format for the drccfg register
*/
/* fix ending addr mask*/
/*FIXME*/
/* let's just go with this to start ... see if we can get ANYWHERE */
/* need to get end addr. Need to do it with the bank in mind. */
al = 3;
al -= i&3;
ending_adr = rows >> al;
print_err("computed ending_adr = "); print_err_hex8(ending_adr);
print_err("\r\n");
bad_reinit:
/* issue all banks recharge */
ram->drcctl=0x02;
dummy_write();
/* update ending address register */
ram->drcbendadr[bank] = ending_adr;
/* update config register */
ram->drccfg &= ~(0xff << bank*4);
if (ending_adr)
ram->drccfg = ((banks = 4 ? 8 : 0) | cols & 3)<< (bank*4);
dumpram();
/* skip the rest for now */
// bank = 0;
// *drccfg=*drccfg&YYY|ZZZZ;
if(bank!=0) {
bank--;
ram->drcbendaddr[bank] = 0xff000000;
//*(&*drcbendadr+XXYYXX)=0xff;
goto start;
}
/* set control register to NORMAL mode */
ram->drcctl=0x18;
dummy_write();
return bank;
bad_ram:
print_info("bad ram!\r\n");
/* you are here because the read-after-write failed,
* in most cases because: no ram in that bank!
* set badbank to 1 and go to reinit
*/
ending_adr = 0;
goto bad_reinit;
nextbank(3);
while(1)
print_err("DONE NEXTBANK\r\n");
}
/* note: based on AMD code, but AMD code is BROKEN AFAIK */
int
staticmem(void){
volatile unsigned char *zero = (unsigned char *) 0;
/* set up 0x18 .. **/
*drcbendadr = 0x88;
*drctmctl = 0x1e;
*drccfg = 0x9;
/* nop mode */
*drcctl = 0x1;
/* do the dummy write */
*zero = 0;
/* precharge */
*drcctl = 2;
*zero = 0;
/* two autorefreshes */
*drcctl = 4;
*zero = 0;
print_err("one zero out on refresh\r\n");
*zero = 0;
print_err("two zero out on refresh\r\n");
/* load mode register */
*drcctl = 3;
*zero = 0;
print_err("DONE the load mode reg\r\n");
/* normal mode */
*drcctl = 0x18;
*zero = 0;
print_err("DONE the normal\r\n");
}

38
src/mainboard/digitallogic/msm586seg/auto.c
View File

@ -67,31 +67,9 @@ static void main(unsigned long bist)
// while(1)
print_err("HI THERE!\r\n");
sizemem();
// staticmem();
print_err("STATIC MEM DONE\r\n");
/* Halt if there was a built in self test failure */
// report_bist_failure(bist);
#if 0
print_pci_devices();
#endif
#if 0
if(!bios_reset_detected()) {
enable_smbus();
#if 0
dump_spd_registers(&memctrl[0]);
// dump_smbus_registers();
#endif
memreset_setup();
sdram_initialize(sizeof(memctrl)/sizeof(memctrl[0]), memctrl);
}
#endif
#if 0
else {
/* clear memory 1meg */
@ -115,17 +93,9 @@ static void main(unsigned long bist)
dump_pci_device(PCI_DEV(0, 0, 0));
#endif
/*
#if 0
ram_check(0x00000000, msr.lo+(msr.hi<<32));
#else
#if 0
#if 1
print_err("RAM CHECK!\r\n");
// Check 16MB of memory @ 0
ram_check(0x00000000, 0x01000000);
#else
// Check 16MB of memory @ 2GB
ram_check(0x80000000, 0x81000000);
#endif
#endif
*/
}