arm64: zynqmp: Add QSPI flash mini u-boot configuration

Add configuration files/dtses for mini u-boot configuration
which runs on smaller footprint of internal memory. This
configuration has only required qspi flash support and it
uses DCC as serial.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/Makefile

@@ -152,6 +152,7 @@ dtb-$(CONFIG_ARCH_ZYNQMP) += \
 	zynqmp-mini-emmc0.dtb			\
 	zynqmp-mini-emmc1.dtb			\
 	zynqmp-mini-nand.dtb			\
+	zynqmp-mini-qspi.dtb			\
 	zynqmp-zcu100-revC.dtb			\
 	zynqmp-zcu102-revA.dtb			\
 	zynqmp-zcu102-revB.dtb			\

arch/arm/dts/zynqmp-mini-qspi.dts

@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dts file for Xilinx ZynqMP Mini Configuration
+ *
+ * (C) Copyright 2015 - 2018, Xilinx, Inc.
+ *
+ * Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+/dts-v1/;
+
+/ {
+	model = "ZynqMP MINI QSPI";
+	compatible = "xlnx,zynqmp";
+	#address-cells = <2>;
+	#size-cells = <1>;
+
+	aliases {
+		serial0 = &dcc;
+		spi0 = &qspi;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@fffc0000 {
+		device_type = "memory";
+		reg = <0x0 0xfffc0000 0x40000>;
+	};
+
+	dcc: dcc {
+		compatible = "arm,dcc";
+		status = "disabled";
+		u-boot,dm-pre-reloc;
+	};
+
+	amba: amba {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+
+		qspi: spi@ff0f0000 {
+			compatible = "xlnx,zynqmp-qspi-1.0";
+			status = "disabled";
+			clock-names = "ref_clk", "pclk";
+			clocks = <&misc_clk &misc_clk>;
+			num-cs = <1>;
+			reg = <0x0 0xff0f0000 0x1000 0x0 0xc0000000 0x8000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		misc_clk: misc_clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <125000000>;
+		};
+	};
+};
+
+&qspi {
+	status = "okay";
+	flash@0 {
+		compatible = "n25q512a11";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <4>;
+		spi-max-frequency = <10000000>;
+	};
+};
+
+&dcc {
+	status = "okay";
+};

configs/xilinx_zynqmp_mini_qspi_defconfig

@@ -0,0 +1,61 @@
+CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="xilinx_zynqmp_mini_qspi"
+CONFIG_ARCH_ZYNQMP=y
+CONFIG_SYS_TEXT_BASE=0xFFFC0000
+CONFIG_SYS_MEM_RSVD_FOR_MMU=y
+CONFIG_ZYNQMP_NO_DDR=y
+# CONFIG_CMD_ZYNQMP is not set
+CONFIG_DEFAULT_DEVICE_TREE="zynqmp-mini-qspi"
+# CONFIG_IMAGE_FORMAT_LEGACY is not set
+CONFIG_BOOTDELAY=-1
+# CONFIG_DISPLAY_CPUINFO is not set
+# CONFIG_CMDLINE_EDITING is not set
+# CONFIG_AUTO_COMPLETE is not set
+# CONFIG_SYS_LONGHELP is not set
+CONFIG_SYS_PROMPT="ZynqMP> "
+# CONFIG_CMD_BDI 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_DM is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_SF=y
+# 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_MISC is not set
+CONFIG_MP=y
+# CONFIG_PARTITIONS is not set
+CONFIG_OF_EMBED=y
+# CONFIG_NET is not set
+# CONFIG_DM_WARN is not set
+# CONFIG_DM_DEVICE_REMOVE is not set
+# CONFIG_MMC is not set
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_BAR=y
+CONFIG_SF_DUAL_FLASH=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_ZYNQMP_GQSPI=y
+# CONFIG_EFI_LOADER is not set

include/configs/xilinx_zynqmp_mini_qspi.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration for Xilinx ZynqMP QSPI Flash utility
+ *
+ * (C) Copyright 2018 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ * Siva Durga Prasad Paladugu <sivadur@xilinx.com>
+ */
+
+#ifndef __CONFIG_ZYNQMP_MINI_QSPI_H
+#define __CONFIG_ZYNQMP_MINI_QSPI_H
+
+#include <configs/xilinx_zynqmp_mini.h>
+
+#define CONFIG_SYS_ICACHE_OFF
+#define CONFIG_NR_DRAM_BANKS	1
+#define CONFIG_ENV_SIZE		1400
+#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_TEXT_BASE + 0x20000)
+#define CONFIG_SYS_MALLOC_LEN	0x2000
+
+#endif /* __CONFIG_ZYNQMP_MINI_QSPI_H */