4 files changed, 155 insertions, 0 deletions
diff --git a/roms/u-boot/board/emulation/qemu-riscv/Kconfig b/roms/u-boot/board/emulation/qemu-riscv/Kconfig
new file mode 100644
index 000000000..0818048ba
--- /dev/null
+++ b/roms/u-boot/board/emulation/qemu-riscv/Kconfig
@@ -0,0 +1,68 @@
+if TARGET_QEMU_VIRT
+
+config SYS_BOARD
+	default "qemu-riscv"
+
+config SYS_VENDOR
+	default "emulation"
+
+config SYS_CPU
+	default "generic"
+
+config SYS_CONFIG_NAME
+	default "qemu-riscv"
+
+config SYS_TEXT_BASE
+	default 0x81200000 if SPL
+	default 0x80000000 if !RISCV_SMODE
+	default 0x80200000 if RISCV_SMODE && ARCH_RV64I
+	default 0x80400000 if RISCV_SMODE && ARCH_RV32I
+
+config SPL_TEXT_BASE
+	default 0x80000000
+
+config SPL_OPENSBI_LOAD_ADDR
+	hex
+	default 0x81000000
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select GENERIC_RISCV
+	select SUPPORT_SPL
+	imply AHCI
+	imply SMP
+	imply BOARD_LATE_INIT
+	imply PCI_INIT_R
+	imply SPL_RAM_SUPPORT
+	imply SPL_RAM_DEVICE
+	imply CMD_PCI
+	imply CMD_POWEROFF
+	imply CMD_SCSI
+	imply CMD_PING
+	imply CMD_EXT2
+	imply CMD_EXT4
+	imply CMD_FAT
+	imply CMD_FS_GENERIC
+	imply DOS_PARTITION
+	imply ISO_PARTITION
+	imply EFI_PARTITION
+	imply SCSI_AHCI
+	imply AHCI_PCI
+	imply E1000
+	imply NVME
+	imply PCI
+	imply DM_PCI
+	imply PCIE_ECAM_GENERIC
+	imply SCSI
+	imply DM_SCSI
+	imply SYS_NS16550
+	imply SIFIVE_SERIAL
+	imply SYSRESET
+	imply SYSRESET_CMD_POWEROFF
+	imply SYSRESET_SYSCON
+	imply VIRTIO_MMIO
+	imply VIRTIO_PCI
+	imply VIRTIO_NET
+	imply VIRTIO_BLK
+
+endif
diff --git a/roms/u-boot/board/emulation/qemu-riscv/MAINTAINERS b/roms/u-boot/board/emulation/qemu-riscv/MAINTAINERS
new file mode 100644
index 000000000..78969ed6b
--- /dev/null
+++ b/roms/u-boot/board/emulation/qemu-riscv/MAINTAINERS
@@ -0,0 +1,11 @@
+QEMU RISC-V 'VIRT' BOARD
+M:	Bin Meng <bmeng.cn@gmail.com>
+S:	Maintained
+F:	board/emulation/qemu-riscv/
+F:	include/configs/qemu-riscv.h
+F:	configs/qemu-riscv32_defconfig
+F:	configs/qemu-riscv32_smode_defconfig
+F:	configs/qemu-riscv32_spl_defconfig
+F:	configs/qemu-riscv64_defconfig
+F:	configs/qemu-riscv64_smode_defconfig
+F:	configs/qemu-riscv64_spl_defconfig
diff --git a/roms/u-boot/board/emulation/qemu-riscv/Makefile b/roms/u-boot/board/emulation/qemu-riscv/Makefile
new file mode 100644
index 000000000..3f29b90a4
--- /dev/null
+++ b/roms/u-boot/board/emulation/qemu-riscv/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+
+obj-y	+= qemu-riscv.o
diff --git a/roms/u-boot/board/emulation/qemu-riscv/qemu-riscv.c b/roms/u-boot/board/emulation/qemu-riscv/qemu-riscv.c
new file mode 100644
index 000000000..dcfd3f20b
--- /dev/null
+++ b/roms/u-boot/board/emulation/qemu-riscv/qemu-riscv.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <env.h>
+#include <fdtdec.h>
+#include <image.h>
+#include <log.h>
+#include <spl.h>
+#include <init.h>
+#include <virtio_types.h>
+#include <virtio.h>
+
+int board_init(void)
+{
+	/*
+	 * Make sure virtio bus is enumerated so that peripherals
+	 * on the virtio bus can be discovered by their drivers
+	 */
+	virtio_init();
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	ulong kernel_start;
+	ofnode chosen_node;
+	int ret;
+
+	chosen_node = ofnode_path("/chosen");
+	if (!ofnode_valid(chosen_node)) {
+		debug("No chosen node found, can't get kernel start address\n");
+		return 0;
+	}
+
+#ifdef CONFIG_ARCH_RV64I
+	ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
+			      (u64 *)&kernel_start);
+#else
+	ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
+			      (u32 *)&kernel_start);
+#endif
+	if (ret) {
+		debug("Can't find kernel start address in device tree\n");
+		return 0;
+	}
+
+	env_set_hex("kernel_start", kernel_start);
+
+	return 0;
+}
+
+#ifdef CONFIG_SPL
+u32 spl_boot_device(void)
+{
+	/* RISC-V QEMU only supports RAM as SPL boot device */
+	return BOOT_DEVICE_RAM;
+}
+#endif
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+	/* boot using first FIT config */
+	return 0;
+}
+#endif