[PATCH 2/5] drivers: ddr: altera: arria10: Add valid RAM size check

[Naresh Kumar Ravulapalli]

Add call to get_ram_size() function to check memory range
for valid RAM.

Signed-off-by: Naresh Kumar Ravulapalli <nareshkumar.ravulapalli at altera.com>
---
 drivers/ddr/altera/sdram_arria10.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/ddr/altera/sdram_arria10.c b/drivers/ddr/altera/sdram_arria10.c
index d75203a1d2a..4a82af0b711 100644
--- a/drivers/ddr/altera/sdram_arria10.c
+++ b/drivers/ddr/altera/sdram_arria10.c
@@ -669,6 +669,22 @@ static int of_sdram_firewall_setup(const void *blob)
 	return 0;
 }
 
+static void sdram_size_check(void)
+{
+	phys_size_t ram_check = 0;
+
+	debug("DDR: Running SDRAM size sanity check\n");
+
+	ram_check = get_ram_size((long *)gd->bd->bi_dram[0].start,
+				 gd->bd->bi_dram[0].size);
+	if (ram_check != gd->bd->bi_dram[0].size) {
+		puts("DDR: SDRAM size check failed!\n");
+		hang();
+	}
+
+	debug("DDR: SDRAM size check passed!\n");
+}
+
 int ddr_calibration_sequence(void)
 {
 	schedule();
@@ -722,5 +738,7 @@ int ddr_calibration_sequence(void)
 	if (sdram_is_ecc_enabled())
 		sdram_init_ecc_bits(gd->ram_size);
 
+	sdram_size_check();
+
 	return 0;
 }
-- 
2.35.3