unsigned int ctrl_num);
void fsl_ddr_set_intl3r(const unsigned int granule_size);
-/* processor specific function */
-extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
- unsigned int ctrl_num);
-
#if defined(SPD_EEPROM_ADDRESS) || \
defined(SPD_EEPROM_ADDRESS1) || defined(SPD_EEPROM_ADDRESS2) || \
defined(SPD_EEPROM_ADDRESS3) || defined(SPD_EEPROM_ADDRESS4)
return step_string_tbl[s];
}
-unsigned long long step_assign_addresses(fsl_ddr_info_t *pinfo,
+static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo,
unsigned int dbw_cap_adj[])
{
int i, j;
return total_mem;
}
+/* Use weak function to allow board file to override the address assignment */
+__attribute__((weak, alias("__step_assign_addresses")))
+unsigned long long step_assign_addresses(fsl_ddr_info_t *pinfo,
+ unsigned int dbw_cap_adj[]);
+
unsigned long long
fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
unsigned int size_only)
{
unsigned int i, j;
unsigned long long total_mem = 0;
+ int assert_reset;
fsl_ddr_cfg_regs_t *ddr_reg = pinfo->fsl_ddr_config_reg;
common_timing_params_t *timing_params = pinfo->common_timing_params;
+ assert_reset = board_need_mem_reset();
/* data bus width capacity adjust shift amount */
unsigned int dbw_capacity_adjust[CONFIG_NUM_DDR_CONTROLLERS];
timing_params[i].all_DIMMs_registered,
&pinfo->memctl_opts[i],
pinfo->dimm_params[i], i);
+ /*
+ * For RDIMMs, JEDEC spec requires clocks to be stable
+ * before reset signal is deasserted. For the boards
+ * using fixed parameters, this function should be
+ * be called from board init file.
+ */
+ if (timing_params[i].all_DIMMs_registered)
+ assert_reset = 1;
+ }
+ if (assert_reset) {
+ debug("Asserting mem reset\n");
+ board_assert_mem_reset();
}
+
case STEP_ASSIGN_ADDRESSES:
/* STEP 5: Assign addresses to chip selects */
check_interleaving_options(pinfo);
fsl_ddr_cfg_regs_t *reg = &ddr_reg[i];
if (reg->cs[j].config & 0x80000000) {
unsigned int end;
- end = reg->cs[j].bnds & 0xFFF;
+ /*
+ * 0xfffffff is a special value we put
+ * for unused bnds
+ */
+ if (reg->cs[j].bnds == 0xffffffff)
+ continue;
+ end = reg->cs[j].bnds & 0xffff;
if (end > max_end) {
max_end = end;
}
unsigned int law_memctl = LAW_TRGT_IF_DDR_1;
unsigned long long total_memory;
fsl_ddr_info_t info;
+ int deassert_reset;
/* Reset info structure. */
memset(&info, 0, sizeof(fsl_ddr_info_t));
total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 0);
/* setup 3-way interleaving before enabling DDRC */
- switch (info.memctl_opts[0].memctl_interleaving_mode) {
- case FSL_DDR_3WAY_1KB_INTERLEAVING:
- case FSL_DDR_3WAY_4KB_INTERLEAVING:
- case FSL_DDR_3WAY_8KB_INTERLEAVING:
- fsl_ddr_set_intl3r(info.memctl_opts[0].memctl_interleaving_mode);
- break;
- default:
- break;
+ if (info.memctl_opts[0].memctl_interleaving) {
+ switch (info.memctl_opts[0].memctl_interleaving_mode) {
+ case FSL_DDR_3WAY_1KB_INTERLEAVING:
+ case FSL_DDR_3WAY_4KB_INTERLEAVING:
+ case FSL_DDR_3WAY_8KB_INTERLEAVING:
+ fsl_ddr_set_intl3r(
+ info.memctl_opts[0].memctl_interleaving_mode);
+ break;
+ default:
+ break;
+ }
}
- /* Program configuration registers. */
+ /*
+ * Program configuration registers.
+ * JEDEC specs requires clocks to be stable before deasserting reset
+ * for RDIMMs. Clocks start after chip select is enabled and clock
+ * control register is set. During step 1, all controllers have their
+ * registers set but not enabled. Step 2 proceeds after deasserting
+ * reset through board FPGA or GPIO.
+ * For non-registered DIMMs, initialization can go through but it is
+ * also OK to follow the same flow.
+ */
+ deassert_reset = board_need_mem_reset();
+ for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
+ if (info.common_timing_params[i].all_DIMMs_registered)
+ deassert_reset = 1;
+ }
for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
debug("Programming controller %u\n", i);
if (info.common_timing_params[i].ndimms_present == 0) {
"skipping programming\n", i);
continue;
}
-
- fsl_ddr_set_memctl_regs(&(info.fsl_ddr_config_reg[i]), i);
+ /*
+ * The following call with step = 1 returns before enabling
+ * the controller. It has to finish with step = 2 later.
+ */
+ fsl_ddr_set_memctl_regs(&(info.fsl_ddr_config_reg[i]), i,
+ deassert_reset ? 1 : 0);
+ }
+ if (deassert_reset) {
+ /* Use board FPGA or GPIO to deassert reset signal */
+ debug("Deasserting mem reset\n");
+ board_deassert_mem_reset();
+ for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
+ /* Call with step = 2 to continue initialization */
+ fsl_ddr_set_memctl_regs(&(info.fsl_ddr_config_reg[i]),
+ i, 2);
+ }
}
/* program LAWs */
#if !defined(CONFIG_PHYS_64BIT)
/* Check for 4G or more. Bad. */
if (total_memory >= (1ull << 32)) {
- printf("Detected %lld MB of memory\n", total_memory >> 20);
+ puts("Detected ");
+ print_size(total_memory, " of memory\n");
printf(" This U-Boot only supports < 4G of DDR\n");
printf(" You could rebuild it with CONFIG_PHYS_64BIT\n");
printf(" "); /* re-align to match init_func_ram print */
projects / karo-tx-uboot.git / blobdiff