rockchip: rk3188: Decode the actual amount of ram

[platform/kernel/u-boot.git] / arch / arm / mach-rockchip / rk3188-board.c

diff --git a/arch/arm/mach-rockchip/rk3188-board.c b/arch/arm/mach-rockchip/rk3188-board.c
index 16f3855..c370156 100644 (file)
--- a/arch/arm/mach-rockchip/rk3188-board.c
+++ b/arch/arm/mach-rockchip/rk3188-board.c
@@ -56,8 +56,22 @@ err:
 
 int dram_init(void)
 {
-       /* FIXME: read back ram size from sys_reg2 */
-       gd->ram_size = 0x40000000;
+       struct ram_info ram;
+       struct udevice *dev;
+       int ret;
+
+       ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+       if (ret) {
+               debug("DRAM init failed: %d\n", ret);
+               return ret;
+       }
+       ret = ram_get_info(dev, &ram);
+       if (ret) {
+               debug("Cannot get DRAM size: %d\n", ret);
+               return ret;
+       }
+       debug("SDRAM base=%lx, size=%x\n", ram.base, ram.size);
+       gd->ram_size = ram.size;
 
        return 0;
 }