options.c

				printf("Not enough bank(chip-select) for CS2+CS3 "
					"on controller %d, interleaving disabled!\n", ctrl_num);
			}
#endif
			break;
		case FSL_DDR_CS0_CS1_AND_CS2_CS3:
#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
			if (pdimm[0].n_ranks < 4) {
				popts->ba_intlv_ctl = 0;
				printf("Not enough bank(CS) for CS0+CS1 and "
					"CS2+CS3 on controller %d, "
					"interleaving disabled!\n", ctrl_num);
			}
#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
			if ((pdimm[0].n_ranks < 2) || (pdimm[1].n_ranks < 2)) {
				popts->ba_intlv_ctl = 0;
				printf("Not enough bank(CS) for CS0+CS1 and "
					"CS2+CS3 on controller %d, "
					"interleaving disabled!\n", ctrl_num);
			}
#endif
			break;
		default:
			popts->ba_intlv_ctl = 0;
			break;
		}
	}

	if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) {
		if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf))
			popts->addr_hash = 0;
		else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash",
					       "true", buf))
			popts->addr_hash = 1;
	}

	if (pdimm[0].n_ranks == 4)
		popts->quad_rank_present = 1;

	ddr_freq = get_ddr_freq(0) / 1000000;
	if (popts->registered_dimm_en) {
		popts->rcw_override = 1;
		popts->rcw_1 = 0x000a5a00;
		if (ddr_freq <= 800)
			popts->rcw_2 = 0x00000000;
		else if (ddr_freq <= 1066)
			popts->rcw_2 = 0x00100000;
		else if (ddr_freq <= 1333)
			popts->rcw_2 = 0x00200000;
		else
			popts->rcw_2 = 0x00300000;
	}

	fsl_ddr_board_options(popts, pdimm, ctrl_num);

	return 0;
}

void check_interleaving_options(fsl_ddr_info_t *pinfo)
{
	int i, j, k, check_n_ranks, intlv_invalid = 0;
	unsigned int check_intlv, check_n_row_addr, check_n_col_addr;
	unsigned long long check_rank_density;
	struct dimm_params_s *dimm;
	/*
	 * Check if all controllers are configured for memory
	 * controller interleaving. Identical dimms are recommended. At least
	 * the size, row and col address should be checked.
	 */
	j = 0;
	check_n_ranks = pinfo->dimm_params[0][0].n_ranks;
	check_rank_density = pinfo->dimm_params[0][0].rank_density;
	check_n_row_addr =  pinfo->dimm_params[0][0].n_row_addr;
	check_n_col_addr = pinfo->dimm_params[0][0].n_col_addr;
	check_intlv = pinfo->memctl_opts[0].memctl_interleaving_mode;
	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
		dimm = &pinfo->dimm_params[i][0];
		if (!pinfo->memctl_opts[i].memctl_interleaving) {
			continue;
		} else if (((check_rank_density != dimm->rank_density) ||
		     (check_n_ranks != dimm->n_ranks) ||
		     (check_n_row_addr != dimm->n_row_addr) ||
		     (check_n_col_addr != dimm->n_col_addr) ||
		     (check_intlv !=
			pinfo->memctl_opts[i].memctl_interleaving_mode))){
			intlv_invalid = 1;
			break;
		} else {
			j++;
		}

	}
	if (intlv_invalid) {
		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
			pinfo->memctl_opts[i].memctl_interleaving = 0;
		printf("Not all DIMMs are identical. "
			"Memory controller interleaving disabled.\n");
	} else {
		switch (check_intlv) {
		case FSL_DDR_256B_INTERLEAVING:
		case FSL_DDR_CACHE_LINE_INTERLEAVING:
		case FSL_DDR_PAGE_INTERLEAVING:
		case FSL_DDR_BANK_INTERLEAVING:
		case FSL_DDR_SUPERBANK_INTERLEAVING:
			if (3 == CONFIG_NUM_DDR_CONTROLLERS)
				k = 2;
			else
				k = CONFIG_NUM_DDR_CONTROLLERS;
			break;
		case FSL_DDR_3WAY_1KB_INTERLEAVING:
		case FSL_DDR_3WAY_4KB_INTERLEAVING:
		case FSL_DDR_3WAY_8KB_INTERLEAVING:
		case FSL_DDR_4WAY_1KB_INTERLEAVING:
		case FSL_DDR_4WAY_4KB_INTERLEAVING:
		case FSL_DDR_4WAY_8KB_INTERLEAVING:
		default:
			k = CONFIG_NUM_DDR_CONTROLLERS;
			break;
		}
		debug("%d of %d controllers are interleaving.\n", j, k);
		if (j && (j != k)) {
			for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
				pinfo->memctl_opts[i].memctl_interleaving = 0;
			printf("Not all controllers have compatible "
				"interleaving mode. All disabled.\n");
		}
	}
	debug("Checking interleaving options completed\n");
}

int fsl_use_spd(void)
{
	int use_spd = 0;

#ifdef CONFIG_DDR_SPD
	char buffer[HWCONFIG_BUFFER_SIZE];
	char *buf = NULL;

	/*
	 * Extract hwconfig from environment since we have not properly setup
	 * the environment but need it for ddr config params
	 */
	if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
		buf = buffer;

	/* if hwconfig is not enabled, or "sdram" is not defined, use spd */
	if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) {
		if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf))
			use_spd = 1;
		else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram",
					       "fixed", buf))
			use_spd = 0;
		else
			use_spd = 1;
	} else
		use_spd = 1;
#endif

	return use_spd;
}