driver/ddr: Restruct driver to allow standalone memory space

U-boot has been initializing DDR for the main memory. The presumption
is the memory stays as a big continuous block, either linear or
interleaved. This change is to support putting some DDR controllers
to separated space without counting into main memory. The standalone
memory controller could use different number of DIMM slots.

Signed-off-by: York Sun <yorksun@freescale.com>

1 files changed, 13 insertions, 10 deletions

diff --git a/drivers/ddr/fsl/options.c b/drivers/ddr/fsl/options.c
index 5986e1a0b9..31cc2bfecd 100644
--- a/drivers/ddr/fsl/options.c
+++ b/drivers/ddr/fsl/options.c
@@ -1065,18 +1065,21 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo)
 	unsigned int check_intlv, check_n_row_addr, check_n_col_addr;
 	unsigned long long check_rank_density;
 	struct dimm_params_s *dimm;
+	int first_ctrl = pinfo->first_ctrl;
+	int last_ctrl = first_ctrl + pinfo->num_ctrls - 1;
+
 	/*
 	 * 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++) {
+	check_n_ranks = pinfo->dimm_params[first_ctrl][0].n_ranks;
+	check_rank_density = pinfo->dimm_params[first_ctrl][0].rank_density;
+	check_n_row_addr =  pinfo->dimm_params[first_ctrl][0].n_row_addr;
+	check_n_col_addr = pinfo->dimm_params[first_ctrl][0].n_col_addr;
+	check_intlv = pinfo->memctl_opts[first_ctrl].memctl_interleaving_mode;
+	for (i = first_ctrl; i <= last_ctrl; i++) {
 		dimm = &pinfo->dimm_params[i][0];
 		if (!pinfo->memctl_opts[i].memctl_interleaving) {
 			continue;
@@ -1094,7 +1097,7 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo)
 
 	}
 	if (intlv_invalid) {
-		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
+		for (i = first_ctrl; i <= last_ctrl; i++)
 			pinfo->memctl_opts[i].memctl_interleaving = 0;
 		printf("Not all DIMMs are identical. "
 			"Memory controller interleaving disabled.\n");
@@ -1123,10 +1126,10 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo)
 		}
 		debug("%d of %d controllers are interleaving.\n", j, k);
 		if (j && (j != k)) {
-			for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
+			for (i = first_ctrl; i <= last_ctrl; i++)
 				pinfo->memctl_opts[i].memctl_interleaving = 0;
-			printf("Not all controllers have compatible "
-				"interleaving mode. All disabled.\n");
+			if ((last_ctrl - first_ctrl) > 1)
+				puts("Not all controllers have compatible interleaving mode. All disabled.\n");
 		}
 	}
 	debug("Checking interleaving options completed\n");