diff mbox series

[v2,5/7] ddr: altera: arria10: Add RAM size check

Message ID 20200420084624.110026-6-ley.foon.tan@intel.com
State Deferred
Delegated to: Tom Rini
Headers show
Series ddr: altera: arria10: Convert SDRAM driver to DM | expand

Commit Message

Ley Foon Tan April 20, 2020, 8:46 a.m. UTC 
Add call to get_ram_size() function to check memory range
for valid RAM.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

---
v2:
- Change SZ_1G to full SDRAM size in get_ram_size() argument.
---
 drivers/ddr/altera/sdram_arria10.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/ddr/altera/sdram_arria10.c b/drivers/ddr/altera/sdram_arria10.c
index 6201dc277460..3fa34a1ae390 100644
--- a/drivers/ddr/altera/sdram_arria10.c
+++ b/drivers/ddr/altera/sdram_arria10.c
@@ -8,6 +8,7 @@ 
 #include <dm.h>
 #include <errno.h>
 #include <fdtdec.h>
+#include <hang.h>
 #include <malloc.h>
 #include <ram.h>
 #include <reset.h>
@@ -17,7 +18,7 @@ 
 #include <asm/arch/fpga_manager.h>
 #include <asm/arch/misc.h>
 #include <dm/device_compat.h>
-#include <linux/kernel.h>
+#include <linux/sizes.h>
 
 #include "sdram_arria10.h"
 
@@ -671,6 +672,21 @@  static int ddr_calibration_sequence(struct altera_sdram_platdata *plat)
 	return 0;
 }
 
+static void sdram_size_check(struct ram_info *ram)
+{
+	phys_size_t ram_check = 0;
+
+	debug("DDR: Running SDRAM size sanity check\n");
+
+	ram_check = get_ram_size((void *)(ram->base), ram->size);
+	if (ram_check != ram->size) {
+		puts("DDR: SDRAM size check failed!\n");
+		hang();
+	}
+
+	debug("DDR: SDRAM size check passed!\n");
+}
+
 static int altera_sdram_ofdata_to_platdata(struct udevice *dev)
 {
 	struct altera_sdram_platdata *plat = dev->platdata;
@@ -715,6 +731,7 @@  static int altera_sdram_probe(struct udevice *dev)
 	priv->info.base = gd->bd->bi_dram[0].start;
 	priv->info.size = gd->ram_size;
 
+	sdram_size_check(&priv->info);
 	return 0;
 
 failed: