Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-riscv

- Increase stack size to avoid a stack overflow during distro boot.
- Add hifive-unleashed-a00.dts for SIFIVE FU540.
- Add OF_SEPARATE support for SIFIVE FU540.
- Add SPL support for Andes AX25 AE350.
- Improve U-Boot SPL / OpenSBI smp boot flow for RISC-V.

include/configs/ax25-ae350.h

@@ -7,6 +7,23 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
+#ifdef CONFIG_SPL
+#define CONFIG_SPL_MAX_SIZE		0x00100000
+#define CONFIG_SPL_BSS_START_ADDR	0x04000000
+#define CONFIG_SPL_BSS_MAX_SIZE		0x00100000
+
+#ifndef CONFIG_XIP
+#define CONFIG_SPL_LOAD_FIT_ADDRESS	0x00200000
+#else
+#define CONFIG_SPL_LOAD_FIT_ADDRESS	0x80010000
+#endif
+
+#ifdef CONFIG_SPL_MMC_SUPPORT
+#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
+#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME		"u-boot.itb"
+#endif
+#endif
+
 /*
  * CPU and Board Configuration Options
  */

include/opensbi.h

@@ -11,7 +11,7 @@
 #define FW_DYNAMIC_INFO_MAGIC_VALUE		0x4942534f
 
 /** Maximum supported info version */
-#define FW_DYNAMIC_INFO_VERSION			0x1
+#define FW_DYNAMIC_INFO_VERSION			0x2
 
 /** Possible next mode values */
 #define FW_DYNAMIC_INFO_NEXT_MODE_U		0x0
@@ -35,6 +35,22 @@ struct fw_dynamic_info {
 	unsigned long next_mode;
 	/** Options for OpenSBI library */
 	unsigned long options;
+	/**
+	 * Preferred boot HART id
+	 *
+	 * It is possible that the previous booting stage uses same link
+	 * address as the FW_DYNAMIC firmware. In this case, the relocation
+	 * lottery mechanism can potentially overwrite the previous booting
+	 * stage while other HARTs are still running in the previous booting
+	 * stage leading to boot-time crash. To avoid this boot-time crash,
+	 * the previous booting stage can specify last HART that will jump
+	 * to the FW_DYNAMIC firmware as the preferred boot HART.
+	 *
+	 * To avoid specifying a preferred boot HART, the previous booting
+	 * stage can set it to -1UL which will force the FW_DYNAMIC firmware
+	 * to use the relocation lottery mechanism.
+	 */
+	unsigned long boot_hart;
 } __packed;
 
 #endif