ppc4xx: Update 440SP/440SPe DDR SPD setup code to support 440SP
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 35b2315..c4da739 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -188,6 +188,7 @@
ddr_cas_id_t selected_cas,
int write_recovery);
static unsigned long is_ecc_enabled(void);
+#ifdef CONFIG_DDR_ECC
static void program_ecc(unsigned long *dimm_populated,
unsigned char *iic0_dimm_addr,
unsigned long num_dimm_banks,
@@ -195,6 +196,7 @@
static void program_ecc_addr(unsigned long start_address,
unsigned long num_bytes,
unsigned long tlb_word2_i_value);
+#endif
static void program_DQS_calibration(unsigned long *dimm_populated,
unsigned char *iic0_dimm_addr,
unsigned long num_dimm_banks);
@@ -255,15 +257,6 @@
}
}
-static void wait_ddr_idle(void)
-{
- u32 val;
-
- do {
- mfsdram(SDRAM_MCSTAT, val);
- } while ((val & SDRAM_MCSTAT_IDLE_MASK) == SDRAM_MCSTAT_IDLE_NOT);
-}
-
static unsigned char spd_read(uchar chip, uint addr)
{
unsigned char data[2];
@@ -491,7 +484,7 @@
(val & ~(SDRAM_MEMODE_DIC_MASK | SDRAM_MEMODE_DLL_MASK |
SDRAM_MEMODE_RTT_MASK | SDRAM_MEMODE_DQS_MASK)) |
(SDRAM_MEMODE_DIC_NORMAL | SDRAM_MEMODE_DLL_ENABLE
- | SDRAM_MEMODE_RTT_75OHM | SDRAM_MEMODE_DQS_ENABLE));
+ | SDRAM_MEMODE_RTT_150OHM | SDRAM_MEMODE_DQS_ENABLE));
/*------------------------------------------------------------------
* Program Initialization preload registers.
@@ -537,10 +530,12 @@
*-----------------------------------------------------------------*/
program_DQS_calibration(dimm_populated, iic0_dimm_addr, num_dimm_banks);
+#ifdef CONFIG_DDR_ECC
/*------------------------------------------------------------------
* If ecc is enabled, initialize the parity bits.
*-----------------------------------------------------------------*/
program_ecc(dimm_populated, iic0_dimm_addr, num_dimm_banks, MY_TLB_WORD2_I_ENABLE);
+#endif
#ifdef DEBUG
ppc440sp_sdram_register_dump();
@@ -702,7 +697,7 @@
*-----------------------------------------------------------------*/
get_sys_info(&board_cfg);
- mfsdr(sdr_ddr0, sdr_ddrpll);
+ mfsdr(SDR0_DDR0, sdr_ddrpll);
sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll));
/*
@@ -877,7 +872,11 @@
unsigned long ddrtype;
unsigned long val;
+#ifdef CONFIG_DDR_ECC
ecc_enabled = TRUE;
+#else
+ ecc_enabled = FALSE;
+#endif
dimm_32bit = FALSE;
dimm_64bit = FALSE;
buf0 = FALSE;
@@ -1314,7 +1313,7 @@
*-----------------------------------------------------------------*/
get_sys_info(&board_cfg);
- mfsdr(sdr_ddr0, sdr_ddrpll);
+ mfsdr(SDR0_DDR0, sdr_ddrpll);
sdram_freq = MULDIV64((board_cfg.freqPLB), SDR0_DDR0_DDRM_DECODE(sdr_ddrpll), 1);
/*------------------------------------------------------------------
@@ -1463,11 +1462,12 @@
mfsdram(SDRAM_MMODE, mmode);
mmode = mmode & ~(SDRAM_MMODE_WR_MASK | SDRAM_MMODE_DCL_MASK);
- cycle_2_0_clk = MULDIV64(ONE_BILLION, 100, max_2_0_tcyc_ns_x_100);
- cycle_2_5_clk = MULDIV64(ONE_BILLION, 100, max_2_5_tcyc_ns_x_100);
- cycle_3_0_clk = MULDIV64(ONE_BILLION, 100, max_3_0_tcyc_ns_x_100);
- cycle_4_0_clk = MULDIV64(ONE_BILLION, 100, max_4_0_tcyc_ns_x_100);
- cycle_5_0_clk = MULDIV64(ONE_BILLION, 100, max_5_0_tcyc_ns_x_100);
+ /* add 10 here because of rounding problems */
+ cycle_2_0_clk = MULDIV64(ONE_BILLION, 100, max_2_0_tcyc_ns_x_100) + 10;
+ cycle_2_5_clk = MULDIV64(ONE_BILLION, 100, max_2_5_tcyc_ns_x_100) + 10;
+ cycle_3_0_clk = MULDIV64(ONE_BILLION, 100, max_3_0_tcyc_ns_x_100) + 10;
+ cycle_4_0_clk = MULDIV64(ONE_BILLION, 100, max_4_0_tcyc_ns_x_100) + 10;
+ cycle_5_0_clk = MULDIV64(ONE_BILLION, 100, max_5_0_tcyc_ns_x_100) + 10;
if (sdram_ddr1 == TRUE) { /* DDR1 */
if ((cas_2_0_available == TRUE) && (sdram_freq <= cycle_2_0_clk)) {
@@ -1498,7 +1498,11 @@
} else {
printf("ERROR: Cannot find a supported CAS latency with the installed DIMMs.\n");
printf("Only DIMMs DDR2 with CAS latencies of 3.0, 4.0, and 5.0 are supported.\n");
- printf("Make sure the PLB speed is within the supported range of the DIMMs.\n\n");
+ printf("Make sure the PLB speed is within the supported range of the DIMMs.\n");
+ printf("cas3=%d cas4=%d cas5=%d\n",
+ cas_3_0_available, cas_4_0_available, cas_5_0_available);
+ printf("sdram_freq=%d cycle3=%d cycle4=%d cycle5=%d\n\n",
+ sdram_freq, cycle_3_0_clk, cycle_4_0_clk, cycle_5_0_clk);
hang();
}
}
@@ -1575,7 +1579,7 @@
/*------------------------------------------------------------------
* Set the SDRAM Refresh Timing Register, SDRAM_RTR
*-----------------------------------------------------------------*/
- mfsdr(sdr_ddr0, sdr_ddrpll);
+ mfsdr(SDR0_DDR0, sdr_ddrpll);
sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll));
max_refresh_rate = 0;
@@ -1661,7 +1665,7 @@
*-----------------------------------------------------------------*/
get_sys_info(&board_cfg);
- mfsdr(sdr_ddr0, sdr_ddrpll);
+ mfsdr(SDR0_DDR0, sdr_ddrpll);
sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll));
/*------------------------------------------------------------------
@@ -2069,7 +2073,7 @@
* Set the sizes
*-----------------------------------------------------------------*/
baseadd_size = 0;
- rank_size_bytes = 1024 * 1024 * rank_size_id;
+ rank_size_bytes = 4 * 1024 * 1024 * rank_size_id;
switch (rank_size_id) {
case 0x02:
baseadd_size |= SDRAM_RXBAS_SDSZ_8;
@@ -2106,8 +2110,8 @@
for (i = 0; i < num_ranks; i++) {
mtdcr_any(rank_reg+i+dimm_num+bank_0_populated,
- (rank_base_addr & SDRAM_RXBAS_SDBA_MASK) |
- baseadd_size);
+ (SDRAM_RXBAS_SDBA_ENCODE(rank_base_addr) |
+ baseadd_size));
rank_base_addr += rank_size_bytes;
}
}
@@ -2130,9 +2134,10 @@
ecc = max(ecc, SDRAM_MCOPT1_MCHK_CHK_DECODE(val));
}
- return(ecc);
+ return ecc;
}
+#ifdef CONFIG_DDR_ECC
/*-----------------------------------------------------------------------------+
* program_ecc.
*-----------------------------------------------------------------------------*/
@@ -2208,6 +2213,15 @@
}
#endif
+static void wait_ddr_idle(void)
+{
+ u32 val;
+
+ do {
+ mfsdram(SDRAM_MCSTAT, val);
+ } while ((val & SDRAM_MCSTAT_IDLE_MASK) == SDRAM_MCSTAT_IDLE_NOT);
+}
+
/*-----------------------------------------------------------------------------+
* program_ecc_addr.
*-----------------------------------------------------------------------------*/
@@ -2276,6 +2290,7 @@
#endif
}
}
+#endif
/*-----------------------------------------------------------------------------+
* program_DQS_calibration.
@@ -2531,7 +2546,6 @@
}
} /* for rffd */
-
/*------------------------------------------------------------------
* Set the average RFFD value
*-----------------------------------------------------------------*/