board: schneider: add RZN1 board support

Add support for Schneider Electric RZ/N1D and RZ/N1S boards, which
are based on the Reneasas RZ/N1 SoC devices.

The intention is to support both boards using a single defconfig, and to
handle the differences at runtime.

Signed-off-by: Ralph Siemsen <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>

3 files changed, 52 insertions, 0 deletions

diff --git a/board/schneider/rzn1-snarc/Kconfig b/board/schneider/rzn1-snarc/Kconfig
new file mode 100644
index 00000000000..1c1c235f002
--- /dev/null
+++ b/board/schneider/rzn1-snarc/Kconfig
@@ -0,0 +1,18 @@
+if TARGET_SCHNEIDER_RZN1
+
+config TEXT_BASE
+	default 0x20040000
+
+config SYS_MONITOR_LEN
+	default 524288
+
+config SYS_BOARD
+	default "rzn1-snarc"
+
+config SYS_VENDOR
+	default "schneider"
+
+config SYS_CONFIG_NAME
+	default "rzn1-snarc"
+
+endif
diff --git a/board/schneider/rzn1-snarc/Makefile b/board/schneider/rzn1-snarc/Makefile
new file mode 100644
index 00000000000..e197ca8cb47
--- /dev/null
+++ b/board/schneider/rzn1-snarc/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier:	GPL-2.0+
+
+obj-y	:= rzn1.o
diff --git a/board/schneider/rzn1-snarc/rzn1.c b/board/schneider/rzn1-snarc/rzn1.c
new file mode 100644
index 00000000000..09241c3a954
--- /dev/null
+++ b/board/schneider/rzn1-snarc/rzn1.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <dm.h>
+#include <ram.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = gd->ram_base + 0x100;
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	struct udevice *dev;
+	int err;
+
+	/*
+	 * This will end up calling cadence_ddr_probe(),
+	 * and will also update gd->ram_size.
+	 */
+	err = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (err)
+		debug("DRAM init failed: %d\n", err);
+
+	return err;
+}