riscv: configs: Add nx25-ae250.h to support RISC-V

Add nx25-ae250 board configuartion options for RISC-V

Signed-off-by: Rick Chen <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>
Signed-off-by: Greentime Hu <green.hu@gmail.com>

include/configs/nx25-ae250.h

@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2017 Andes Technology Corporation
+ * Rick Chen, Andes Technology Corporation <rick@andestech.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * CPU and Board Configuration Options
+ */
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_BOOTP_SEND_HOSTNAME
+#define CONFIG_BOOTP_SERVERIP
+
+#ifdef CONFIG_SKIP_LOWLEVEL_INIT
+#define CONFIG_SYS_TEXT_BASE	0x00000000
+#ifdef CONFIG_OF_CONTROL
+#undef CONFIG_OF_SEPARATE
+#define CONFIG_OF_EMBED
+#endif
+#else
+#define CONFIG_SYS_TEXT_BASE	0x80000000
+#endif
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CONFIG_SYS_LONGHELP		/* undef to save memory */
+#define CONFIG_SYS_CBSIZE	1024	/* Console I/O Buffer Size */
+
+/*
+ * Print Buffer Size
+ */
+#define CONFIG_SYS_PBSIZE	\
+	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/*
+ * max number of command args
+ */
+#define CONFIG_SYS_MAXARGS	16
+
+/*
+ * Boot Argument Buffer Size
+ */
+#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
+
+/*
+ * Size of malloc() pool
+ * 512kB is suggested, (CONFIG_ENV_SIZE + 128 * 1024) was not enough
+ */
+#define CONFIG_SYS_MALLOC_LEN   (512 << 10)
+
+/*
+ * Physical Memory Map
+ */
+#define CONFIG_NR_DRAM_BANKS	2
+#define PHYS_SDRAM_0	0x00000000		/* SDRAM Bank #1 */
+#define PHYS_SDRAM_1	\
+	(PHYS_SDRAM_0 + PHYS_SDRAM_0_SIZE)	/* SDRAM Bank #2 */
+#define PHYS_SDRAM_0_SIZE	0x20000000	/* 512 MB */
+#define PHYS_SDRAM_1_SIZE	0x20000000	/* 512 MB */
+#define CONFIG_SYS_SDRAM_BASE	PHYS_SDRAM_0
+
+/*
+ * Serial console configuration
+ */
+#define CONFIG_CONS_INDEX		1
+#define CONFIG_SYS_NS16550_SERIAL
+#ifndef CONFIG_DM_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE	-4
+#endif
+#define CONFIG_SYS_NS16550_CLK		19660800
+
+/*
+ * SD (MMC) controller
+ */
+#define CONFIG_FTSDC010_NUMBER		1
+#define CONFIG_FTSDC010_SDIO
+
+/* Init Stack Pointer */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x1000000 - \
+					GENERATED_GBL_DATA_SIZE)
+
+/*
+ * Load address and memory test area should agree with
+ * arch/riscv/config.mk. Be careful not to overwrite U-Boot itself.
+ */
+#define CONFIG_SYS_LOAD_ADDR		0x100000	/* SDRAM */
+
+/*
+ * memtest works on 512 MB in DRAM
+ */
+#define CONFIG_SYS_MEMTEST_START	PHYS_SDRAM_0
+#define CONFIG_SYS_MEMTEST_END		(PHYS_SDRAM_0 + PHYS_SDRAM_0_SIZE)
+
+/* environments */
+#define CONFIG_ENV_SPI_BUS		0
+#define CONFIG_ENV_SPI_CS		0
+#define CONFIG_ENV_SPI_MAX_HZ		50000000
+#define CONFIG_ENV_SPI_MODE		0
+#define CONFIG_ENV_SECT_SIZE		0x1000
+#define CONFIG_ENV_OVERWRITE
+
+/* SPI FLASH */
+#define CONFIG_SF_DEFAULT_BUS		0
+#define CONFIG_SF_DEFAULT_CS		0
+#define CONFIG_SF_DEFAULT_SPEED		1000000
+#define CONFIG_SF_DEFAULT_MODE		0
+
+/*
+ * For booting Linux, the board info and command line data
+ * have to be in the first 16 MB of memory, since this is
+ * the maximum mapped by the Linux kernel during initialization.
+ */
+
+/* Initial Memory map for Linux*/
+#define CONFIG_SYS_BOOTMAPSZ	(64 << 20)
+/* Increase max gunzip size */
+#define CONFIG_SYS_BOOTM_LEN	(64 << 20)
+
+#endif /* __CONFIG_H */