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bios: add more Ultrascale SDRAM debug with sdram_cdly command to set clk/cmd delay.

This commit is contained in:
Florent Kermarrec 2020-03-10 13:08:49 +01:00
parent c4ce6da6c8
commit bcbf558b6b
3 changed files with 10 additions and 3 deletions
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3
litex/soc/software/bios/main.c
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@ -390,6 +390,7 @@ static void help(void)
#endif #endif
#ifdef USDDRPHY_DEBUG #ifdef USDDRPHY_DEBUG
puts(""); puts("");
puts("sdram_cdly value - Set SDRAM clk/cmd delay");
puts("sdram_cal - run SDRAM calibration"); puts("sdram_cal - run SDRAM calibration");
puts("sdram_mpr - read SDRAM MPR"); puts("sdram_mpr - read SDRAM MPR");
puts("sdram_mrwr reg value - write SDRAM mode registers"); puts("sdram_mrwr reg value - write SDRAM mode registers");
@ -486,6 +487,8 @@ static void do_command(char *c)
else if(strcmp(token, "sdtest") == 0) sdcard_test(atoi(get_token(&c))); else if(strcmp(token, "sdtest") == 0) sdcard_test(atoi(get_token(&c)));
#endif #endif
#ifdef USDDRPHY_DEBUG #ifdef USDDRPHY_DEBUG
else if(strcmp(token, "sdram_cdly") == 0)
ddrphy_cdly(atoi(get_token(&c)));
else if(strcmp(token, "sdram_cal") == 0) else if(strcmp(token, "sdram_cal") == 0)
sdrcal(); sdrcal();
else if(strcmp(token, "sdram_mpr") == 0) else if(strcmp(token, "sdram_mpr") == 0)

6
litex/soc/software/bios/sdram.c
View File

@ -257,8 +257,9 @@ void sdrwr(char *startaddr)
#define NBMODULES DFII_PIX_DATA_BYTES/2 #define NBMODULES DFII_PIX_DATA_BYTES/2
#endif #endif
#ifdef DDRPHY_CMD_DELAY #if defined(DDRPHY_CMD_DELAY) || defined(USDDRPHY_DEBUG)
static void ddrphy_cdly(unsigned int delay) { void ddrphy_cdly(unsigned int delay) {
printf("Setting clk/cmd delay to %d taps\n", delay);
#if CSR_DDRPHY_EN_VTC_ADDR #if CSR_DDRPHY_EN_VTC_ADDR
ddrphy_en_vtc_write(0); ddrphy_en_vtc_write(0);
#endif #endif
@ -994,7 +995,6 @@ int sdrinit(void)
ddrphy_en_vtc_write(0); ddrphy_en_vtc_write(0);
#endif #endif
#ifdef DDRPHY_CMD_DELAY #ifdef DDRPHY_CMD_DELAY
printf("Setting clk/cmd delay to %d taps\n", DDRPHY_CMD_DELAY);
ddrphy_cdly(DDRPHY_CMD_DELAY); ddrphy_cdly(DDRPHY_CMD_DELAY);
#endif #endif
sdrlevel(); sdrlevel();

4
litex/soc/software/bios/sdram.h
View File

@ -27,6 +27,10 @@ int memtest_silent(void);
int memtest(void); int memtest(void);
int sdrinit(void); int sdrinit(void);
#if defined(DDRPHY_CMD_DELAY) || defined(USDDRPHY_DEBUG)
void ddrphy_cdly(unsigned int delay);
#endif
#ifdef USDDRPHY_DEBUG #ifdef USDDRPHY_DEBUG
void sdrcal(void); void sdrcal(void);
void sdrmrwr(char reg, int value); void sdrmrwr(char reg, int value);