arm: zynqmp: add support for xilinx zcu106 board

Add support for the Xilinx Zynq UltraScale+ MPSoC ZCU106 evaluation
board.

The changes are derived from the ZCU104 board support by applying
s/104/106/g (more or less).

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Link: https://lore.barebox.org/20210913121350.9307-2-michael.riesch@wolfvision.net
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

9 files changed, 93 insertions, 0 deletions

diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
index 5aac64fce5..22dc9fe3d1 100644
--- a/arch/arm/boards/Makefile
+++ b/arch/arm/boards/Makefile
@@ -170,6 +170,7 @@ obj-$(CONFIG_MACH_WARP7)			+= element14-warp7/
 obj-$(CONFIG_MACH_WEBASTO_CCBV2)		+= webasto-ccbv2/
 obj-$(CONFIG_MACH_VF610_TWR)			+= freescale-vf610-twr/
 obj-$(CONFIG_MACH_XILINX_ZCU104)		+= xilinx-zcu104/
+obj-$(CONFIG_MACH_XILINX_ZCU106)		+= xilinx-zcu106/
 obj-$(CONFIG_MACH_ZII_COMMON)			+= zii-common/
 obj-$(CONFIG_MACH_ZII_RDU1)			+= zii-imx51-rdu1/
 obj-$(CONFIG_MACH_ZII_RDU2)			+= zii-imx6q-rdu2/
diff --git a/arch/arm/boards/xilinx-zcu106/Makefile b/arch/arm/boards/xilinx-zcu106/Makefile
new file mode 100644
index 0000000000..297f77d57a
--- /dev/null
+++ b/arch/arm/boards/xilinx-zcu106/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+obj-y += board.o
+lwl-y += lowlevel.o lowlevel_init.o
diff --git a/arch/arm/boards/xilinx-zcu106/board.c b/arch/arm/boards/xilinx-zcu106/board.c
new file mode 100644
index 0000000000..0cb5ce86ea
--- /dev/null
+++ b/arch/arm/boards/xilinx-zcu106/board.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021, WolfVision GmbH
+ * Author: Michael Riesch <michael.riesch@wolfvision.net>
+ *
+ * Based on the barebox ZCU104 board support code.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <mach/zynqmp-bbu.h>
+
+static int zcu106_register_update_handler(void)
+{
+	if (!of_machine_is_compatible("xlnx,zynqmp-zcu106"))
+		return 0;
+
+	return zynqmp_bbu_register_handler("SD", "/boot/BOOT.BIN",
+					   BBU_HANDLER_FLAG_DEFAULT);
+}
+device_initcall(zcu106_register_update_handler);
diff --git a/arch/arm/boards/xilinx-zcu106/lowlevel.c b/arch/arm/boards/xilinx-zcu106/lowlevel.c
new file mode 100644
index 0000000000..ccc8d61418
--- /dev/null
+++ b/arch/arm/boards/xilinx-zcu106/lowlevel.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021, WolfVision GmbH
+ * Author: Michael Riesch <michael.riesch@wolfvision.net>
+ *
+ * Based on the barebox ZCU104 board support code.
+ */
+
+#include <common.h>
+#include <debug_ll.h>
+#include <asm/barebox-arm.h>
+
+extern char __dtb_zynqmp_zcu106_revA_start[];
+
+void zynqmp_zcu106_start(uint32_t, uint32_t, uint32_t);
+
+void noinline zynqmp_zcu106_start(uint32_t r0, uint32_t r1, uint32_t r2)
+{
+	/* Assume that the first stage boot loader configured the UART */
+	putc_ll('>');
+
+	barebox_arm_entry(0, SZ_2G,
+			  __dtb_zynqmp_zcu106_revA_start + global_variable_offset());
+}
diff --git a/arch/arm/boards/xilinx-zcu106/lowlevel_init.S b/arch/arm/boards/xilinx-zcu106/lowlevel_init.S
new file mode 100644
index 0000000000..f3d55dcef2
--- /dev/null
+++ b/arch/arm/boards/xilinx-zcu106/lowlevel_init.S
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#include <linux/linkage.h>
+#include <asm/barebox-arm64.h>
+
+/* The DRAM is already setup */
+#define STACK_TOP 0x80000000
+
+ENTRY_PROC(start_zynqmp_zcu106)
+	mov x0, #STACK_TOP
+	mov sp, x0
+	b zynqmp_zcu106_start
+ENTRY_PROC_END(start_zynqmp_zcu106)
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index ffa9fe88c1..14ca6c38ef 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -170,6 +170,7 @@ lwl-$(CONFIG_MACH_SAMA5D27_SOM1) += at91-sama5d27_som1_ek.dtb.o
 lwl-$(CONFIG_MACH_SAMA5D27_GIANTBOARD) += at91-sama5d27_giantboard.dtb.o
 lwl-$(CONFIG_MACH_AT91SAM9X5EK) += at91sam9x5ek.dtb.o
 lwl-$(CONFIG_MACH_XILINX_ZCU104) += zynqmp-zcu104-revA.dtb.o
+lwl-$(CONFIG_MACH_XILINX_ZCU106) += zynqmp-zcu106-revA.dtb.o
 
 lwl-$(CONFIG_MACH_ZII_IMX7D_DEV) += imx7d-zii-rpu2.dtb.o imx7d-zii-rmu2.dtb.o
 lwl-$(CONFIG_MACH_WAGO_PFC_AM35XX) += am35xx-pfc-750_820x.dtb.o
diff --git a/arch/arm/dts/zynqmp-zcu106-revA.dts b/arch/arm/dts/zynqmp-zcu106-revA.dts
new file mode 100644
index 0000000000..7c50588268
--- /dev/null
+++ b/arch/arm/dts/zynqmp-zcu106-revA.dts
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dts file for Xilinx ZynqMP ZCU106
+ *
+ * Copyright (C) 2021, WolfVision GmbH
+ * Author: Michael Riesch <michael.riesch@wolfvision.net>
+ *
+ * Based on the dts for the Xilinx ZynqMP ZCU104.
+ */
+
+#include <arm64/xilinx/zynqmp-zcu106-revA.dts>
+
+/ {
+	chosen {
+		environment {
+			compatible = "barebox,environment";
+			device-path = &sdhci1, "partname:0";
+			file-path = "barebox.env";
+		};
+	};
+};
diff --git a/arch/arm/mach-zynqmp/Kconfig b/arch/arm/mach-zynqmp/Kconfig
index c9dc71c9e7..78cb901653 100644
--- a/arch/arm/mach-zynqmp/Kconfig
+++ b/arch/arm/mach-zynqmp/Kconfig
@@ -7,4 +7,10 @@ config MACH_XILINX_ZCU104
 	  Say Y here if you are using the Xilinx Zynq UltraScale+ MPSoC ZCU104
 	  evaluation board.
 
+config MACH_XILINX_ZCU106
+	bool "Xilinx Zynq UltraScale+ MPSoC ZCU106"
+	help
+	  Say Y here if you are using the Xilinx Zynq UltraScale+ MPSoC ZCU106
+	  evaluation board.
+
 endif
diff --git a/images/Makefile.zynqmp b/images/Makefile.zynqmp
index da3e90b847..872f399883 100644
--- a/images/Makefile.zynqmp
+++ b/images/Makefile.zynqmp
@@ -6,3 +6,7 @@
 pblb-$(CONFIG_MACH_XILINX_ZCU104) += start_zynqmp_zcu104
 FILE_barebox-zynqmp-zcu104.img = start_zynqmp_zcu104.pblb
 image-$(CONFIG_MACH_XILINX_ZCU104) += barebox-zynqmp-zcu104.img
+
+pblb-$(CONFIG_MACH_XILINX_ZCU106) += start_zynqmp_zcu106
+FILE_barebox-zynqmp-zcu106.img = start_zynqmp_zcu106.pblb
+image-$(CONFIG_MACH_XILINX_ZCU106) += barebox-zynqmp-zcu106.img