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.

configs/ae350_rv32_spl_defconfig

@@ -0,0 +1,38 @@
+CONFIG_RISCV=y
+CONFIG_SPL=y
+CONFIG_RISCV_SMODE=y
+CONFIG_SYS_TEXT_BASE=0x01200000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_TARGET_AX25_AE350=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SF_TEST=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_PREFER_SERVERIP=y
+CONFIG_CMD_CACHE=y
+CONFIG_OF_PRIOR_STAGE=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SECT_SIZE=0x1000
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_FTSDC010=y
+CONFIG_FTSDC010_SDIO=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0x0
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_FTMAC100=y
+CONFIG_BAUDRATE=38400
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_ATCSPI200_SPI=y

configs/ae350_rv32_spl_xip_defconfig

@@ -0,0 +1,40 @@
+CONFIG_RISCV=y
+CONFIG_SPL=y
+CONFIG_RISCV_SMODE=y
+CONFIG_SPL_TEXT_BASE=0x80000000
+CONFIG_SYS_TEXT_BASE=0x01200000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_TARGET_AX25_AE350=y
+CONFIG_XIP=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SF_TEST=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_PREFER_SERVERIP=y
+CONFIG_CMD_CACHE=y
+CONFIG_OF_BOARD=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SECT_SIZE=0x1000
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_FTSDC010=y
+CONFIG_FTSDC010_SDIO=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0x0
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_FTMAC100=y
+CONFIG_BAUDRATE=38400
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_ATCSPI200_SPI=y

configs/ae350_rv64_spl_defconfig

@@ -0,0 +1,39 @@
+CONFIG_RISCV=y
+CONFIG_SPL=y
+CONFIG_RISCV_SMODE=y
+CONFIG_SYS_TEXT_BASE=0x01200000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_TARGET_AX25_AE350=y
+CONFIG_ARCH_RV64I=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SF_TEST=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_PREFER_SERVERIP=y
+CONFIG_CMD_CACHE=y
+CONFIG_OF_PRIOR_STAGE=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SECT_SIZE=0x1000
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_FTSDC010=y
+CONFIG_FTSDC010_SDIO=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0x0
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_FTMAC100=y
+CONFIG_BAUDRATE=38400
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_ATCSPI200_SPI=y

configs/ae350_rv64_spl_xip_defconfig

@@ -0,0 +1,41 @@
+CONFIG_RISCV=y
+CONFIG_SPL=y
+CONFIG_RISCV_SMODE=y
+CONFIG_SPL_TEXT_BASE=0x80000000
+CONFIG_SYS_TEXT_BASE=0x01200000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_TARGET_AX25_AE350=y
+CONFIG_ARCH_RV64I=y
+CONFIG_XIP=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SF_TEST=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_PREFER_SERVERIP=y
+CONFIG_CMD_CACHE=y
+CONFIG_OF_BOARD=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SECT_SIZE=0x1000
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_FTSDC010=y
+CONFIG_FTSDC010_SDIO=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0x0
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_FTMAC100=y
+CONFIG_BAUDRATE=38400
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_ATCSPI200_SPI=y

configs/sifive_fu540_defconfig

@@ -7,8 +7,9 @@ CONFIG_RISCV_SMODE=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
 CONFIG_MISC_INIT_R=y
+CONFIG_DEFAULT_DEVICE_TREE="hifive-unleashed-a00"
 CONFIG_DISPLAY_CPUINFO=y
 CONFIG_DISPLAY_BOARDINFO=y
-CONFIG_OF_PRIOR_STAGE=y
+CONFIG_OF_SEPARATE=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_DM_MTD=y