riscv: Add Microchip MPFS Icicle Kit support

This patch adds Microchip MPFS Icicle Kit support. For now, only
NS16550 Serial, Microchip clock, Cadence eMMC and MACB drivers are
enabled. The Microchip MPFS Icicle defconfig by default builds
U-Boot for S-Mode because U-Boot on Microchip PolarFire SoC will run
in S-Mode as payload of HSS + OpenSBI.

Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
diff --git a/include/configs/microchip_mpfs_icicle.h b/include/configs/microchip_mpfs_icicle.h
index 8a74705..2499037 100644
--- a/include/configs/microchip_mpfs_icicle.h
+++ b/include/configs/microchip_mpfs_icicle.h
@@ -7,53 +7,34 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-/*
- * CPU and Board Configuration Options
- */
+#include <linux/sizes.h>
 
-/*
- * Miscellaneous configurable options
- */
-#define CONFIG_SYS_CBSIZE	1024 /* Console I/O Buffer Size */
+#define CONFIG_SYS_SDRAM_BASE       0x80000000
+#define CONFIG_SYS_INIT_SP_ADDR     (CONFIG_SYS_SDRAM_BASE + SZ_2M)
 
-/*
- * Print Buffer Size
- */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_LOAD_ADDR        (CONFIG_SYS_SDRAM_BASE + SZ_2M)
 
-/*
- * max number of command args
- */
-#define CONFIG_SYS_MAXARGS	16
+#define CONFIG_SYS_MALLOC_LEN       SZ_8M
 
-/*
- * Boot Argument Buffer Size
- */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
+#define CONFIG_SYS_BOOTM_LEN        SZ_64M
 
-/*
- * Size of malloc() pool
- * 512kB is suggested, (CONFIG_ENV_SIZE + 128 * 1024) was not enough
- */
-#define CONFIG_SYS_MALLOC_LEN	(512 << 10)
+#define CONFIG_STANDALONE_LOAD_ADDR 0x80200000
 
-/*
- * Physical Memory Map
- */
-#define PHYS_SDRAM_0		0x80000000 /* SDRAM Bank #1 */
-#define PHYS_SDRAM_0_SIZE	0x40000000 /* 1 GB */
-#define CONFIG_SYS_SDRAM_BASE	PHYS_SDRAM_0
+/* Environment options */
 
-/* Init Stack Pointer */
-#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_SDRAM_BASE + 0x200000)
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(DHCP, dhcp, na)
 
-#define CONFIG_SYS_LOAD_ADDR	0x80000000 /* SDRAM */
+#include <config_distro_bootcmd.h>
 
-/*
- * memtest works on DRAM
- */
-
-/* When we use RAM as ENV */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"bootm_size=0x10000000\0" \
+	"kernel_addr_r=0x84000000\0" \
+	"fdt_addr_r=0x88000000\0" \
+	"scriptaddr=0x88100000\0" \
+	"pxefile_addr_r=0x88200000\0" \
+	"ramdisk_addr_r=0x88300000\0" \
+	BOOTENV
 
 #endif /* __CONFIG_H */