arm64: versal-net: Add support for mini configuration

Versal NET mini configuration is designed for running memory test. Current
output is on DCC but changing serial0 alias to pl011 will move console to
serial port.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/aec3f41a4cc48c45b8f07dd6e423d5838dbcc9d7.1663589964.git.michal.simek@amd.com

4 files changed, 161 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 5d4b76c..d6832d1 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -384,6 +384,7 @@ dtb-$(CONFIG_ARCH_VERSAL) += \
 	versal-mini-emmc1.dtb \
 	xilinx-versal-virt.dtb
 dtb-$(CONFIG_ARCH_VERSAL_NET) += \
+	versal-net-mini.dtb \
 	xilinx-versal-net-virt.dtb
 dtb-$(CONFIG_ARCH_ZYNQMP_R5) += \
 	zynqmp-r5.dtb
diff --git a/arch/arm/dts/versal-net-mini.dts b/arch/arm/dts/versal-net-mini.dts
new file mode 100644
index 0000000..8c29a6e
--- /dev/null
+++ b/arch/arm/dts/versal-net-mini.dts
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dts file for Xilinx Versal NET
+ *
+ * Copyright (C) 2021 - 2022, Xilinx, Inc.
+ * Copyright (C) 2022, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek@amd.com>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "xlnx,versal-net-mini";
+	model = "Xilinx Versal NET MINI";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	memory: memory@0 {
+		reg = <0 0xBBF00000 0 0x100000>, <0 0 0 0x80000000>;
+		device_type = "memory";
+	};
+
+	aliases {
+		/* serial0 = &serial0; */
+		serial0 = &dcc;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200";
+	};
+
+	clk1: clk1 {
+		u-boot,dm-pre-reloc;
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <1000000>;
+	};
+
+	dcc: dcc {
+		compatible = "arm,dcc";
+		status = "okay";
+		u-boot,dm-pre-reloc;
+	};
+
+	amba: axi {
+		compatible = "simple-bus";
+		u-boot,dm-pre-reloc;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		serial0: serial@f1920000 {
+			u-boot,dm-pre-reloc;
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0 0xf1920000 0 0x1000>;
+			reg-io-width = <4>;
+			clock-names = "uartclk", "apb_pclk";
+			clocks = <&clk1>, <&clk1>;
+			clock = <1000000>;
+			current-speed = <115200>;
+			skip-init;
+		};
+	};
+};
diff --git a/configs/xilinx_versal_net_mini_defconfig b/configs/xilinx_versal_net_mini_defconfig
new file mode 100644
index 0000000..e8fa08e
--- /dev/null
+++ b/configs/xilinx_versal_net_mini_defconfig
@@ -0,0 +1,72 @@
+CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="xilinx_versal_net_mini"
+CONFIG_SYS_ICACHE_OFF=y
+# CONFIG_ARM64_CRC32 is not set
+# CONFIG_ARM64_SUPPORT_AARCH32 is not set
+CONFIG_ARCH_VERSAL_NET=y
+CONFIG_SYS_TEXT_BASE=0xBBF10000
+CONFIG_SYS_MALLOC_LEN=0x20000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=3
+CONFIG_ENV_SIZE=0x80
+CONFIG_DEFAULT_DEVICE_TREE="versal-net-mini"
+CONFIG_SYS_PROMPT="Versal NET> "
+CONFIG_SYS_MEM_RSVD_FOR_MMU=y
+# CONFIG_PSCI_RESET is not set
+CONFIG_SYS_LOAD_ADDR=0x8000000
+CONFIG_SYS_MEMTEST_START=0x00000000
+CONFIG_SYS_MEMTEST_END=0x00001000
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xBBF10000
+# CONFIG_EXPERT is not set
+# CONFIG_LEGACY_IMAGE_FORMAT is not set
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+# CONFIG_AUTOBOOT is not set
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_BOARD_EARLY_INIT_R=y
+# CONFIG_BOARD_LATE_INIT is not set
+# CONFIG_CMDLINE_EDITING is not set
+# CONFIG_AUTO_COMPLETE is not set
+# CONFIG_SYS_LONGHELP is not set
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_BOOTM is not set
+# CONFIG_CMD_BOOTI is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_FDT is not set
+# CONFIG_CMD_GO is not set
+# CONFIG_CMD_RUN is not set
+# CONFIG_CMD_IMI is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_SAVEENV is not set
+# CONFIG_CMD_ENV_EXISTS is not set
+# CONFIG_CMD_CRC32 is not set
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_MX_CYCLIC=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_SYS_ALT_MEMTEST=y
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+# CONFIG_CMD_ECHO is not set
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SOURCE is not set
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_CACHE=y
+# CONFIG_CMD_SLEEP is not set
+CONFIG_OF_EMBED=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+# CONFIG_NET is not set
+# CONFIG_DM_WARN is not set
+# CONFIG_DM_DEVICE_REMOVE is not set
+# CONFIG_GPIO is not set
+# CONFIG_I2C is not set
+# CONFIG_INPUT is not set
+# CONFIG_MMC is not set
+# CONFIG_POWER is not set
+CONFIG_ARM_DCC=y
+CONFIG_PL01X_SERIAL=y
+# CONFIG_GZIP is not set
diff --git a/include/configs/xilinx_versal_net_mini.h b/include/configs/xilinx_versal_net_mini.h
new file mode 100644
index 0000000..1939832
--- /dev/null
+++ b/include/configs/xilinx_versal_net_mini.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Configuration for Xilinx Versal NET MINI configuration
+ *
+ * Copyright (C) 2018 - 2022, Xilinx, Inc.
+ * Copyright (C) 2022, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek@amd.com>
+ */
+
+#ifndef __CONFIG_VERSAL_NET_MINI_H
+#define __CONFIG_VERSAL_NET_MINI_H
+
+#define CONFIG_EXTRA_ENV_SETTINGS
+
+#include <configs/xilinx_versal_net.h>
+
+/* Undef unneeded configs */
+#undef CONFIG_EXTRA_ENV_SETTINGS
+
+#endif /* __CONFIG_VERSAL_NET_MINI_H */