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bios/sdram: update kuddrphy initialization procedure

This commit is contained in:
Florent Kermarrec 2018-03-08 12:58:54 +01:00
parent 90dcd45f0b
commit 4324c6f666
1 changed files with 20 additions and 4 deletions
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24
litex/soc/software/bios/sdram.c
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@ -222,11 +222,17 @@ void sdrwloff(void)
static int write_level(int *delay, int *high_skew)
{
int i;
int i, j;
int dq_address;
unsigned char dq;
int err_ddrphy_wdly;
int ok;
err_ddrphy_wdly = ERR_DDRPHY_DELAY;
#ifdef CSR_DDRPHY_WDLY_DQS_TAPS_ADDR
printf("Write leveling dqs taps offset: %d\n", ddrphy_wdly_dqs_taps_read());
err_ddrphy_wdly = ERR_DDRPHY_DELAY - ddrphy_wdly_dqs_taps_read();
#endif
printf("Write leveling: ");
sdrwlon();
@ -236,6 +242,10 @@ static int write_level(int *delay, int *high_skew)
ddrphy_dly_sel_write(1 << i);
ddrphy_wdly_dq_rst_write(1);
ddrphy_wdly_dqs_rst_write(1);
#ifdef CSR_DDRPHY_WDLY_DQS_TAPS_ADDR
for(j=0; j<ddrphy_wdly_dqs_taps_read(); j++)
ddrphy_wdly_dqs_inc_write(1);
#endif
delay[i] = 0;
@ -250,7 +260,7 @@ static int write_level(int *delay, int *high_skew)
high_skew[i] = 1;
while(dq != 0) {
delay[i]++;
if(delay[i] >= ERR_DDRPHY_DELAY)
if(delay[i] >= err_ddrphy_wdly)
break;
ddrphy_wdly_dq_inc_write(1);
ddrphy_wdly_dqs_inc_write(1);
@ -263,7 +273,7 @@ static int write_level(int *delay, int *high_skew)
while(dq == 0) {
delay[i]++;
if(delay[i] >= ERR_DDRPHY_DELAY)
if(delay[i] >= err_ddrphy_wdly)
break;
ddrphy_wdly_dq_inc_write(1);
ddrphy_wdly_dqs_inc_write(1);
@ -278,7 +288,7 @@ static int write_level(int *delay, int *high_skew)
ok = 1;
for(i=DFII_PIX_DATA_SIZE/2-1;i>=0;i--) {
printf("%2d%c ", delay[i], high_skew[i] ? '*' : ' ');
if(delay[i] >= ERR_DDRPHY_DELAY)
if(delay[i] >= err_ddrphy_wdly)
ok = 0;
}
@ -653,7 +663,13 @@ int sdrinit(void)
init_sequence();
#ifdef CSR_DDRPHY_BASE
#if CSR_DDRPHY_EN_VTC_ADDR
ddrphy_en_vtc_write(0);
#endif
sdrlevel();
#if CSR_DDRPHY_EN_VTC_ADDR
ddrphy_en_vtc_write(1);
#endif
#endif
sdram_dfii_control_write(DFII_CONTROL_SEL);
if(!memtest())