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-rw-r--r--cpu/ppc4xx/44x_spd_ddr2.c158
-rw-r--r--cpu/ppc4xx/Makefile3
2 files changed, 98 insertions, 63 deletions
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 15250d4..f1d7684 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -60,8 +60,6 @@
"SDRAM_" #mnemonic, SDRAM_##mnemonic, data); \
} while (0)
-static inline void ppc4xx_ibm_ddr2_register_dump(void);
-
#if defined(CONFIG_SPD_EEPROM)
/*-----------------------------------------------------------------------------+
@@ -260,62 +258,19 @@ static void program_ecc_addr(unsigned long start_address,
unsigned long num_bytes,
unsigned long tlb_word2_i_value);
#endif
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
static void program_DQS_calibration(unsigned long *dimm_populated,
- unsigned char *iic0_dimm_addr,
- unsigned long num_dimm_banks);
+ unsigned char *iic0_dimm_addr,
+ unsigned long num_dimm_banks);
#ifdef HARD_CODED_DQS /* calibration test with hardvalues */
static void test(void);
#else
static void DQS_calibration_process(void);
#endif
+#endif
int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
void dcbz_area(u32 start_address, u32 num_bytes);
-static u32 mfdcr_any(u32 dcr)
-{
- u32 val;
-
- switch (dcr) {
- case SDRAM_R0BAS + 0:
- val = mfdcr(SDRAM_R0BAS + 0);
- break;
- case SDRAM_R0BAS + 1:
- val = mfdcr(SDRAM_R0BAS + 1);
- break;
- case SDRAM_R0BAS + 2:
- val = mfdcr(SDRAM_R0BAS + 2);
- break;
- case SDRAM_R0BAS + 3:
- val = mfdcr(SDRAM_R0BAS + 3);
- break;
- default:
- printf("DCR %d not defined in case statement!!!\n", dcr);
- val = 0; /* just to satisfy the compiler */
- }
-
- return val;
-}
-
-static void mtdcr_any(u32 dcr, u32 val)
-{
- switch (dcr) {
- case SDRAM_R0BAS + 0:
- mtdcr(SDRAM_R0BAS + 0, val);
- break;
- case SDRAM_R0BAS + 1:
- mtdcr(SDRAM_R0BAS + 1, val);
- break;
- case SDRAM_R0BAS + 2:
- mtdcr(SDRAM_R0BAS + 2, val);
- break;
- case SDRAM_R0BAS + 3:
- mtdcr(SDRAM_R0BAS + 3, val);
- break;
- default:
- printf("DCR %d not defined in case statement!!!\n", dcr);
- }
-}
-
static unsigned char spd_read(uchar chip, uint addr)
{
unsigned char data[2];
@@ -609,7 +564,11 @@ phys_size_t initdram(int board_type)
/*------------------------------------------------------------------
* DQS calibration.
*-----------------------------------------------------------------*/
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+ DQS_autocalibration();
+#else
program_DQS_calibration(dimm_populated, iic0_dimm_addr, num_dimm_banks);
+#endif
#ifdef CONFIG_DDR_ECC
/*------------------------------------------------------------------
@@ -2329,18 +2288,6 @@ static unsigned long is_ecc_enabled(void)
return ecc;
}
-static void blank_string(int size)
-{
- int i;
-
- for (i=0; i<size; i++)
- putc('\b');
- for (i=0; i<size; i++)
- putc(' ');
- for (i=0; i<size; i++)
- putc('\b');
-}
-
#ifdef CONFIG_DDR_ECC
/*-----------------------------------------------------------------------------+
* program_ecc.
@@ -2468,6 +2415,7 @@ static void program_ecc_addr(unsigned long start_address,
}
#endif
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
/*-----------------------------------------------------------------------------+
* program_DQS_calibration.
*-----------------------------------------------------------------------------*/
@@ -3001,7 +2949,8 @@ static void test(void)
(ppcMfdcr_sdram(SDRAM_MCOPT1) & ~SDRAM_MCOPT1_MCHK_MASK)
| ecc_temp);
}
-#endif
+#endif /* !HARD_CODED_DQS */
+#endif /* !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) */
#else /* CONFIG_SPD_EEPROM */
@@ -3104,9 +3053,12 @@ phys_size_t initdram(int board_type)
/* Set Delay Control Registers */
mtsdram(SDRAM_DLCR, CFG_SDRAM0_DLCR);
+
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
mtsdram(SDRAM_RDCC, CFG_SDRAM0_RDCC);
mtsdram(SDRAM_RQDC, CFG_SDRAM0_RQDC);
mtsdram(SDRAM_RFDC, CFG_SDRAM0_RFDC);
+#endif /* !CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
/*
* Enable Controller by SDRAM0_MCOPT2[DCEN] = 1:
@@ -3115,18 +3067,98 @@ phys_size_t initdram(int board_type)
mfsdram(SDRAM_MCOPT2, val);
mtsdram(SDRAM_MCOPT2, val | SDRAM_MCOPT2_DCEN_ENABLE);
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+ /*------------------------------------------------------------------
+ | DQS calibration.
+ +-----------------------------------------------------------------*/
+ DQS_autocalibration();
+#endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */
+#endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
+
#if defined(CONFIG_DDR_ECC)
ecc_init(CFG_SDRAM_BASE, CFG_MBYTES_SDRAM << 20);
#endif /* defined(CONFIG_DDR_ECC) */
ppc4xx_ibm_ddr2_register_dump();
+
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+ /*
+ * Clear potential errors resulting from auto-calibration.
+ * If not done, then we could get an interrupt later on when
+ * exceptions are enabled.
+ */
+ set_mcsr(get_mcsr());
+#endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
+
#endif /* !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */
return (CFG_MBYTES_SDRAM << 20);
}
#endif /* CONFIG_SPD_EEPROM */
-static inline void ppc4xx_ibm_ddr2_register_dump(void)
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#if defined(CONFIG_440)
+u32 mfdcr_any(u32 dcr)
+{
+ u32 val;
+
+ switch (dcr) {
+ case SDRAM_R0BAS + 0:
+ val = mfdcr(SDRAM_R0BAS + 0);
+ break;
+ case SDRAM_R0BAS + 1:
+ val = mfdcr(SDRAM_R0BAS + 1);
+ break;
+ case SDRAM_R0BAS + 2:
+ val = mfdcr(SDRAM_R0BAS + 2);
+ break;
+ case SDRAM_R0BAS + 3:
+ val = mfdcr(SDRAM_R0BAS + 3);
+ break;
+ default:
+ printf("DCR %d not defined in case statement!!!\n", dcr);
+ val = 0; /* just to satisfy the compiler */
+ }
+
+ return val;
+}
+
+void mtdcr_any(u32 dcr, u32 val)
+{
+ switch (dcr) {
+ case SDRAM_R0BAS + 0:
+ mtdcr(SDRAM_R0BAS + 0, val);
+ break;
+ case SDRAM_R0BAS + 1:
+ mtdcr(SDRAM_R0BAS + 1, val);
+ break;
+ case SDRAM_R0BAS + 2:
+ mtdcr(SDRAM_R0BAS + 2, val);
+ break;
+ case SDRAM_R0BAS + 3:
+ mtdcr(SDRAM_R0BAS + 3, val);
+ break;
+ default:
+ printf("DCR %d not defined in case statement!!!\n", dcr);
+ }
+}
+#endif /* defined(CONFIG_440) */
+
+void blank_string(int size)
+{
+ int i;
+
+ for (i = 0; i < size; i++)
+ putc('\b');
+ for (i = 0; i < size; i++)
+ putc(' ');
+ for (i = 0; i < size; i++)
+ putc('\b');
+}
+#endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */
+
+inline void ppc4xx_ibm_ddr2_register_dump(void)
{
#if defined(DEBUG)
printf("\nPPC4xx IBM DDR2 Register Dump:\n");
diff --git a/cpu/ppc4xx/Makefile b/cpu/ppc4xx/Makefile
index c773400..463b575 100644
--- a/cpu/ppc4xx/Makefile
+++ b/cpu/ppc4xx/Makefile
@@ -35,6 +35,9 @@ SOBJS += kgdb.o
COBJS := 40x_spd_sdram.o
COBJS += 44x_spd_ddr.o
COBJS += 44x_spd_ddr2.o
+ifdef CONFIG_PPC4xx_DDR_AUTOCALIBRATION
+COBJS += 4xx_ibm_ddr2_autocalib.o
+endif
COBJS += 4xx_pci.o
COBJS += 4xx_pcie.o
COBJS += bedbug_405.o
generated by cgit v1.1 at 2024-11-25 08:29:56 +0000