Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 126 insertions, 0 deletions

diff --git a/roms/u-boot/board/renesas/rcar-common/common.c b/roms/u-boot/board/renesas/rcar-common/common.c
new file mode 100644
index 000000000..0352d341e
--- /dev/null
+++ b/roms/u-boot/board/renesas/rcar-common/common.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * board/renesas/rcar-common/common.c
+ *
+ * Copyright (C) 2013 Renesas Electronics Corporation
+ * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
+ * Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <init.h>
+#include <asm/global_data.h>
+#include <dm/uclass-internal.h>
+#include <asm/arch/rmobile.h>
+#include <linux/libfdt.h>
+
+#ifdef CONFIG_RCAR_GEN3
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* If the firmware passed a device tree use it for U-Boot DRAM setup. */
+extern u64 rcar_atf_boot_args[];
+
+int fdtdec_board_setup(const void *fdt_blob)
+{
+	void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
+
+	if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
+		fdt_overlay_apply_node((void *)fdt_blob, 0, atf_fdt_blob, 0);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	return fdtdec_setup_mem_size_base();
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+static int is_mem_overlap(void *blob, int first_mem_node, int curr_mem_node)
+{
+	struct fdt_resource first_mem_res, curr_mem_res;
+	int curr_mem_reg, first_mem_reg = 0;
+	int ret;
+
+	for (;;) {
+		ret = fdt_get_resource(blob, first_mem_node, "reg",
+				       first_mem_reg++, &first_mem_res);
+		if (ret) /* No more entries, no overlap found */
+			return 0;
+
+		curr_mem_reg = 0;
+		for (;;) {
+			ret = fdt_get_resource(blob, curr_mem_node, "reg",
+					       curr_mem_reg++, &curr_mem_res);
+			if (ret) /* No more entries, check next tuple */
+				break;
+
+			if (curr_mem_res.end < first_mem_res.start)
+				continue;
+
+			if (curr_mem_res.start >= first_mem_res.end)
+				continue;
+
+			printf("Overlap found: 0x%llx..0x%llx / 0x%llx..0x%llx\n",
+				first_mem_res.start, first_mem_res.end,
+				curr_mem_res.start, curr_mem_res.end);
+
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	/*
+	 * Scrub duplicate /memory@* node entries here. Some R-Car DTs might
+	 * contain multiple /memory@* nodes, however fdt_fixup_memory_banks()
+	 * either generates single /memory node or updates the first /memory
+	 * node. Any remaining memory nodes are thus potential duplicates.
+	 *
+	 * However, it is not possible to delete all the memory nodes right
+	 * away, since some of those might not be DRAM memory nodes, but some
+	 * sort of other memory. Thus, delete only the memory nodes which are
+	 * in the R-Car3 DBSC ranges.
+	 */
+	int mem = 0, first_mem_node = 0;
+
+	for (;;) {
+		mem = fdt_node_offset_by_prop_value(blob, mem,
+						    "device_type", "memory", 7);
+		if (mem < 0)
+			break;
+		if (!fdtdec_get_is_enabled(blob, mem))
+			continue;
+
+		/* First memory node, patched by U-Boot */
+		if (!first_mem_node) {
+			first_mem_node = mem;
+			continue;
+		}
+
+		/* Check the remaining nodes and delete duplicates */
+		if (!is_mem_overlap(blob, first_mem_node, mem))
+			continue;
+
+		/* Delete duplicate node, start again */
+		fdt_del_node(blob, mem);
+		first_mem_node = 0;
+		mem = 0;
+	}
+
+	return 0;
+}
+#endif
+#endif