1 files changed, 89 insertions, 0 deletions
diff --git a/roms/u-boot/arch/mips/mach-octeon/dram.c b/roms/u-boot/arch/mips/mach-octeon/dram.c
new file mode 100644
index 000000000..4679260f1
--- /dev/null
+++ b/roms/u-boot/arch/mips/mach-octeon/dram.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Stefan Roese <sr@denx.de>
+ */
+
+#include <config.h>
+#include <dm.h>
+#include <ram.h>
+#include <asm/global_data.h>
+#include <linux/compat.h>
+#include <display_options.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UBOOT_RAM_SIZE_MAX	0x10000000ULL
+
+int dram_init(void)
+{
+	if (IS_ENABLED(CONFIG_RAM_OCTEON)) {
+		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;
+		}
+
+		gd->ram_size = ram.size;
+		debug("SDRAM base=%lx, size=%lx\n",
+		      (unsigned long)ram.base, (unsigned long)ram.size);
+	} else {
+		/*
+		 * No DDR init yet -> run in L2 cache
+		 */
+		gd->ram_size = (4 << 20);
+		gd->bd->bi_dram[0].size = gd->ram_size;
+		gd->bd->bi_dram[1].size = 0;
+	}
+
+	return 0;
+}
+
+void board_add_ram_info(int use_default)
+{
+	if (IS_ENABLED(CONFIG_RAM_OCTEON)) {
+		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 = ram_get_info(dev, &ram);
+		if (ret) {
+			debug("Cannot get DRAM size: %d\n", ret);
+			return;
+		}
+
+		printf(" (");
+		print_size(ram.size, " total)");
+	}
+}
+
+phys_size_t get_effective_memsize(void)
+{
+	return UBOOT_RAM_SIZE_MAX;
+}
+
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	if (IS_ENABLED(CONFIG_RAM_OCTEON)) {
+		/* Map a maximum of 256MiB - return not size but address */
+		return CONFIG_SYS_SDRAM_BASE + min(gd->ram_size,
+						   UBOOT_RAM_SIZE_MAX);
+	} else {
+		return gd->ram_top;
+	}
+}