diff mbox series

[U-Boot,11/11] riscv: Add SiFive FU540 board support

Message ID 20190117103748.36613-12-anup.patel@wdc.com
State Superseded
Delegated to: Andes
Headers show
Series SiFive FU540 Support | expand

Commit Message

Anup Patel Jan. 17, 2019, 10:39 a.m. UTC 
This patch adds SiFive FU540 board support. For now, only
SiFive serial, SiFive PRCI, and Cadance MACB drivers are
only enabled. The SiFive FU540 defconfig by default builds
U-Boot for S-Mode because U-Boot on SiFive FU540 will run
in S-Mode as payload of BBL or OpenSBI.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
 arch/riscv/Kconfig             |  4 ++++
 board/sifive/fu540/Kconfig     | 42 +++++++++++++++++++++++++++++++++
 board/sifive/fu540/MAINTAINERS |  9 +++++++
 board/sifive/fu540/Makefile    |  5 ++++
 board/sifive/fu540/fu540.c     | 17 ++++++++++++++
 configs/sifive_fu540_defconfig | 11 +++++++++
 include/configs/sifive-fu540.h | 43 ++++++++++++++++++++++++++++++++++
 7 files changed, 131 insertions(+)
 create mode 100644 board/sifive/fu540/Kconfig
 create mode 100644 board/sifive/fu540/MAINTAINERS
 create mode 100644 board/sifive/fu540/Makefile
 create mode 100644 board/sifive/fu540/fu540.c
 create mode 100644 configs/sifive_fu540_defconfig
 create mode 100644 include/configs/sifive-fu540.h

Comments

Troy Benjegerdes Jan. 17, 2019, 4:55 p.m. UTC | #1 
So I take it I could use my version of U-boot to load BBL,
then your S-mode U-boot?

I've been holding off on refactoring or submitting anything
from the MicroSemi U-boot that runs in M-mode and inits the
DRAM until I have some decent method to regression test the
whole system (bootloader, kernel, userspace). I also want
to make sure we don't break any other RiscV platforms when
we add new code.

It looks HiFive unleashed boards are available for purchase
again, is there any place to get an AndesTech board?

(fyi, the *proof of concept* hacks for regression testing
that work for me based on MicroSemi patches are at
https://github.com/tmagik/freedom-u-sdk/tree/regression/kernel4.15 )

On Thu, Jan 17, 2019 at 10:39:27AM +0000, Anup Patel wrote:
> This patch adds SiFive FU540 board support. For now, only
> SiFive serial, SiFive PRCI, and Cadance MACB drivers are
> only enabled. The SiFive FU540 defconfig by default builds
> U-Boot for S-Mode because U-Boot on SiFive FU540 will run
> in S-Mode as payload of BBL or OpenSBI.
> 
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
> Signed-off-by: Atish Patra <atish.patra@wdc.com>
> ---
>  arch/riscv/Kconfig             |  4 ++++
>  board/sifive/fu540/Kconfig     | 42 +++++++++++++++++++++++++++++++++
>  board/sifive/fu540/MAINTAINERS |  9 +++++++
>  board/sifive/fu540/Makefile    |  5 ++++
>  board/sifive/fu540/fu540.c     | 17 ++++++++++++++
>  configs/sifive_fu540_defconfig | 11 +++++++++
>  include/configs/sifive-fu540.h | 43 ++++++++++++++++++++++++++++++++++
>  7 files changed, 131 insertions(+)
>  create mode 100644 board/sifive/fu540/Kconfig
>  create mode 100644 board/sifive/fu540/MAINTAINERS
>  create mode 100644 board/sifive/fu540/Makefile
>  create mode 100644 board/sifive/fu540/fu540.c
>  create mode 100644 configs/sifive_fu540_defconfig
>  create mode 100644 include/configs/sifive-fu540.h
> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 6879047ff7..36512a8995 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -14,11 +14,15 @@ config TARGET_AX25_AE350
>  config TARGET_QEMU_VIRT
>  	bool "Support QEMU Virt Board"
>  
> +config TARGET_SIFIVE_FU540
> +	bool "Support SiFive FU540 Board"
> +
>  endchoice
>  
>  # board-specific options below
>  source "board/AndesTech/ax25-ae350/Kconfig"
>  source "board/emulation/qemu-riscv/Kconfig"
> +source "board/sifive/fu540/Kconfig"
>  
>  # platform-specific options below
>  source "arch/riscv/cpu/ax25/Kconfig"
> diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
> new file mode 100644
> index 0000000000..6be3d88144
> --- /dev/null
> +++ b/board/sifive/fu540/Kconfig
> @@ -0,0 +1,42 @@
> +if TARGET_SIFIVE_FU540
> +
> +config SYS_BOARD
> +	default "fu540"
> +
> +config SYS_VENDOR
> +	default "sifive"
> +
> +config SYS_CPU
> +	default "generic"
> +
> +config SYS_CONFIG_NAME
> +	default "sifive-fu540"
> +
> +config SYS_TEXT_BASE
> +	default 0x80000000 if !RISCV_SMODE
> +	default 0x80200000 if RISCV_SMODE
> +
> +config BOARD_SPECIFIC_OPTIONS # dummy
> +	def_bool y
> +	select GENERIC_RISCV
> +	imply CMD_DHCP
> +	imply CMD_EXT2
> +	imply CMD_EXT4
> +	imply CMD_FAT
> +	imply CMD_FS_GENERIC
> +	imply CMD_NET
> +	imply CMD_PING
> +	imply CLK_SIFIVE
> +	imply CLK_SIFIVE_FU540_PRCI
> +	imply DOS_PARTITION
> +	imply EFI_PARTITION
> +	imply IP_DYN
> +	imply ISO_PARTITION
> +	imply MACB
> +	imply MII
> +	imply NET_RANDOM_ETHADDR
> +	imply PHY_LIB
> +	imply PHY_MSCC
> +	imply SIFIVE_SERIAL
> +
> +endif
> diff --git a/board/sifive/fu540/MAINTAINERS b/board/sifive/fu540/MAINTAINERS
> new file mode 100644
> index 0000000000..702d803ad8
> --- /dev/null
> +++ b/board/sifive/fu540/MAINTAINERS
> @@ -0,0 +1,9 @@
> +SiFive FU540 BOARD
> +M:	Paul Walmsley <paul.walmsley@sifive.com>
> +M:	Palmer Dabbelt <palmer@sifive.com>
> +M:	Anup Patel <anup.patel@wdc.com>
> +M:	Atish Patra <atish.patra@wdc.com>
> +S:	Maintained
> +F:	board/sifive/fu540/
> +F:	include/configs/sifive-fu540.h
> +F:	configs/sifive_fu540_defconfig
> diff --git a/board/sifive/fu540/Makefile b/board/sifive/fu540/Makefile
> new file mode 100644
> index 0000000000..6e1862c475
> --- /dev/null
> +++ b/board/sifive/fu540/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# Copyright (c) 2019 Western Digital Corporation or its affiliates.
> +
> +obj-y	+= fu540.o
> diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
> new file mode 100644
> index 0000000000..5adc4a3d4a
> --- /dev/null
> +++ b/board/sifive/fu540/fu540.c
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (c) 2019 Western Digital Corporation or its affiliates.
> + *
> + * Authors:
> + *   Anup Patel <anup.patel@wdc.com>
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +
> +int board_init(void)
> +{
> +	/* For now nothing to do here. */
> +
> +	return 0;
> +}
> diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
> new file mode 100644
> index 0000000000..2f8cca9de0
> --- /dev/null
> +++ b/configs/sifive_fu540_defconfig
> @@ -0,0 +1,11 @@
> +CONFIG_RISCV=y
> +CONFIG_TARGET_SIFIVE_FU540=y
> +CONFIG_RISCV_SMODE=y
> +CONFIG_ARCH_RV64I=y
> +CONFIG_DISTRO_DEFAULTS=y
> +CONFIG_NR_DRAM_BANKS=1
> +CONFIG_FIT=y
> +CONFIG_DISPLAY_CPUINFO=y
> +CONFIG_DISPLAY_BOARDINFO=y
> +CONFIG_CMD_MII=y
> +CONFIG_OF_PRIOR_STAGE=y
> diff --git a/include/configs/sifive-fu540.h b/include/configs/sifive-fu540.h
> new file mode 100644
> index 0000000000..7007b5f6af
> --- /dev/null
> +++ b/include/configs/sifive-fu540.h
> @@ -0,0 +1,43 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Copyright (c) 2019 Western Digital Corporation or its affiliates.
> + *
> + * Authors:
> + *   Anup Patel <anup.patel@wdc.com>
> + */
> +
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +#include <linux/sizes.h>
> +
> +#define CONFIG_SYS_SDRAM_BASE		0x80000000
> +#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
> +
> +#define CONFIG_SYS_LOAD_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
> +
> +#define CONFIG_SYS_MALLOC_LEN		SZ_8M
> +
> +#define CONFIG_SYS_BOOTM_LEN		SZ_16M
> +
> +#define CONFIG_STANDALONE_LOAD_ADDR	0x80200000
> +
> +/* Environment options */
> +#define CONFIG_ENV_SIZE			SZ_4K
> +
> +#define BOOT_TARGET_DEVICES(func) \
> +	func(DHCP, dhcp, na)
> +
> +#include <config_distro_bootcmd.h>
> +
> +#define CONFIG_EXTRA_ENV_SETTINGS \
> +	"fdt_high=0xffffffffffffffff\0" \
> +	"initrd_high=0xffffffffffffffff\0" \
> +	"kernel_addr_r=0x80600000\0" \
> +	"fdt_addr_r=0x82200000\0" \
> +	"scriptaddr=0x82300000\0" \
> +	"pxefile_addr_r=0x82400000\0" \
> +	"ramdisk_addr_r=0x82500000\0" \
> +	BOOTENV
> +
> +#endif /* __CONFIG_H */
> -- 
> 2.17.1
> 
> _______________________________________________
> U-Boot mailing list
> U-Boot@lists.denx.de
> https://lists.denx.de/listinfo/u-boot
Atish Patra Jan. 17, 2019, 6:20 p.m. UTC | #2 
On 1/17/19 8:58 AM, Troy Benjegerdes wrote:
> So I take it I could use my version of U-boot to load BBL,
> then your S-mode U-boot?
> 

No need of your version of U-boot to load BBL. This patchset intend
to follow the standard boot flow.

ZSBL->FSBL->BBL/OpenSBI->U-boot->Linux.
(From ROM)--(M Mode)----(S Mode)-(S Mode)

Couple of Methods to boot Linux:

1. Create a combined image of u-boot and Linux. Give that combined
image as a payload to BBL/OpenSBI. U-boot prompt should appear.

2. Just provide U-boot image as a payload to BBL/OpenSBI.
U-boot prompt should appear. Use TFTP to load Linux.

bootm can be used to boot Linux afterwards.

As of now, there is no SMP support in u-boot. So you may want to bringup 
one cpu and test non-smp configuration.

Once we have SPI driver support in U-boot, we should be load images from 
MMC as well.


> I've been holding off on refactoring or submitting anything
> from the MicroSemi U-boot that runs in M-mode and inits the
> DRAM until I have some decent method to regression test the
> whole system (bootloader, kernel, userspace). I also want
> to make sure we don't break any other RiscV platforms when
> we add new code.
> 

I am hoping AndesTech guys will give a go at the patchset ;).

> It looks HiFive unleashed boards are available for purchase
> again, is there any place to get an AndesTech board?
> 

I am not aware of any AndesTech Dev boards.

> (fyi, the *proof of concept* hacks for regression testing
> that work for me based on MicroSemi patches are at
> https://github.com/tmagik/freedom-u-sdk/tree/regression/kernel4.15 )
> 
cool.

Regards,
Atish
> On Thu, Jan 17, 2019 at 10:39:27AM +0000, Anup Patel wrote:
>> This patch adds SiFive FU540 board support. For now, only
>> SiFive serial, SiFive PRCI, and Cadance MACB drivers are
>> only enabled. The SiFive FU540 defconfig by default builds
>> U-Boot for S-Mode because U-Boot on SiFive FU540 will run
>> in S-Mode as payload of BBL or OpenSBI.
>>
>> Signed-off-by: Anup Patel <anup.patel@wdc.com>
>> Signed-off-by: Atish Patra <atish.patra@wdc.com>
>> ---
>>   arch/riscv/Kconfig             |  4 ++++
>>   board/sifive/fu540/Kconfig     | 42 +++++++++++++++++++++++++++++++++
>>   board/sifive/fu540/MAINTAINERS |  9 +++++++
>>   board/sifive/fu540/Makefile    |  5 ++++
>>   board/sifive/fu540/fu540.c     | 17 ++++++++++++++
>>   configs/sifive_fu540_defconfig | 11 +++++++++
>>   include/configs/sifive-fu540.h | 43 ++++++++++++++++++++++++++++++++++
>>   7 files changed, 131 insertions(+)
>>   create mode 100644 board/sifive/fu540/Kconfig
>>   create mode 100644 board/sifive/fu540/MAINTAINERS
>>   create mode 100644 board/sifive/fu540/Makefile
>>   create mode 100644 board/sifive/fu540/fu540.c
>>   create mode 100644 configs/sifive_fu540_defconfig
>>   create mode 100644 include/configs/sifive-fu540.h
>>
>> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
>> index 6879047ff7..36512a8995 100644
>> --- a/arch/riscv/Kconfig
>> +++ b/arch/riscv/Kconfig
>> @@ -14,11 +14,15 @@ config TARGET_AX25_AE350
>>   config TARGET_QEMU_VIRT
>>   	bool "Support QEMU Virt Board"
>>   
>> +config TARGET_SIFIVE_FU540
>> +	bool "Support SiFive FU540 Board"
>> +
>>   endchoice
>>   
>>   # board-specific options below
>>   source "board/AndesTech/ax25-ae350/Kconfig"
>>   source "board/emulation/qemu-riscv/Kconfig"
>> +source "board/sifive/fu540/Kconfig"
>>   
>>   # platform-specific options below
>>   source "arch/riscv/cpu/ax25/Kconfig"
>> diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
>> new file mode 100644
>> index 0000000000..6be3d88144
>> --- /dev/null
>> +++ b/board/sifive/fu540/Kconfig
>> @@ -0,0 +1,42 @@
>> +if TARGET_SIFIVE_FU540
>> +
>> +config SYS_BOARD
>> +	default "fu540"
>> +
>> +config SYS_VENDOR
>> +	default "sifive"
>> +
>> +config SYS_CPU
>> +	default "generic"
>> +
>> +config SYS_CONFIG_NAME
>> +	default "sifive-fu540"
>> +
>> +config SYS_TEXT_BASE
>> +	default 0x80000000 if !RISCV_SMODE
>> +	default 0x80200000 if RISCV_SMODE
>> +
>> +config BOARD_SPECIFIC_OPTIONS # dummy
>> +	def_bool y
>> +	select GENERIC_RISCV
>> +	imply CMD_DHCP
>> +	imply CMD_EXT2
>> +	imply CMD_EXT4
>> +	imply CMD_FAT
>> +	imply CMD_FS_GENERIC
>> +	imply CMD_NET
>> +	imply CMD_PING
>> +	imply CLK_SIFIVE
>> +	imply CLK_SIFIVE_FU540_PRCI
>> +	imply DOS_PARTITION
>> +	imply EFI_PARTITION
>> +	imply IP_DYN
>> +	imply ISO_PARTITION
>> +	imply MACB
>> +	imply MII
>> +	imply NET_RANDOM_ETHADDR
>> +	imply PHY_LIB
>> +	imply PHY_MSCC
>> +	imply SIFIVE_SERIAL
>> +
>> +endif
>> diff --git a/board/sifive/fu540/MAINTAINERS b/board/sifive/fu540/MAINTAINERS
>> new file mode 100644
>> index 0000000000..702d803ad8
>> --- /dev/null
>> +++ b/board/sifive/fu540/MAINTAINERS
>> @@ -0,0 +1,9 @@
>> +SiFive FU540 BOARD
>> +M:	Paul Walmsley <paul.walmsley@sifive.com>
>> +M:	Palmer Dabbelt <palmer@sifive.com>
>> +M:	Anup Patel <anup.patel@wdc.com>
>> +M:	Atish Patra <atish.patra@wdc.com>
>> +S:	Maintained
>> +F:	board/sifive/fu540/
>> +F:	include/configs/sifive-fu540.h
>> +F:	configs/sifive_fu540_defconfig
>> diff --git a/board/sifive/fu540/Makefile b/board/sifive/fu540/Makefile
>> new file mode 100644
>> index 0000000000..6e1862c475
>> --- /dev/null
>> +++ b/board/sifive/fu540/Makefile
>> @@ -0,0 +1,5 @@
>> +# SPDX-License-Identifier: GPL-2.0+
>> +#
>> +# Copyright (c) 2019 Western Digital Corporation or its affiliates.
>> +
>> +obj-y	+= fu540.o
>> diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
>> new file mode 100644
>> index 0000000000..5adc4a3d4a
>> --- /dev/null
>> +++ b/board/sifive/fu540/fu540.c
>> @@ -0,0 +1,17 @@
>> +// SPDX-License-Identifier: GPL-2.0+
>> +/*
>> + * Copyright (c) 2019 Western Digital Corporation or its affiliates.
>> + *
>> + * Authors:
>> + *   Anup Patel <anup.patel@wdc.com>
>> + */
>> +
>> +#include <common.h>
>> +#include <dm.h>
>> +
>> +int board_init(void)
>> +{
>> +	/* For now nothing to do here. */
>> +
>> +	return 0;
>> +}
>> diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
>> new file mode 100644
>> index 0000000000..2f8cca9de0
>> --- /dev/null
>> +++ b/configs/sifive_fu540_defconfig
>> @@ -0,0 +1,11 @@
>> +CONFIG_RISCV=y
>> +CONFIG_TARGET_SIFIVE_FU540=y
>> +CONFIG_RISCV_SMODE=y
>> +CONFIG_ARCH_RV64I=y
>> +CONFIG_DISTRO_DEFAULTS=y
>> +CONFIG_NR_DRAM_BANKS=1
>> +CONFIG_FIT=y
>> +CONFIG_DISPLAY_CPUINFO=y
>> +CONFIG_DISPLAY_BOARDINFO=y
>> +CONFIG_CMD_MII=y
>> +CONFIG_OF_PRIOR_STAGE=y
>> diff --git a/include/configs/sifive-fu540.h b/include/configs/sifive-fu540.h
>> new file mode 100644
>> index 0000000000..7007b5f6af
>> --- /dev/null
>> +++ b/include/configs/sifive-fu540.h
>> @@ -0,0 +1,43 @@
>> +/* SPDX-License-Identifier: GPL-2.0+ */
>> +/*
>> + * Copyright (c) 2019 Western Digital Corporation or its affiliates.
>> + *
>> + * Authors:
>> + *   Anup Patel <anup.patel@wdc.com>
>> + */
>> +
>> +#ifndef __CONFIG_H
>> +#define __CONFIG_H
>> +
>> +#include <linux/sizes.h>
>> +
>> +#define CONFIG_SYS_SDRAM_BASE		0x80000000
>> +#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
>> +
>> +#define CONFIG_SYS_LOAD_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
>> +
>> +#define CONFIG_SYS_MALLOC_LEN		SZ_8M
>> +
>> +#define CONFIG_SYS_BOOTM_LEN		SZ_16M
>> +
>> +#define CONFIG_STANDALONE_LOAD_ADDR	0x80200000
>> +
>> +/* Environment options */
>> +#define CONFIG_ENV_SIZE			SZ_4K
>> +
>> +#define BOOT_TARGET_DEVICES(func) \
>> +	func(DHCP, dhcp, na)
>> +
>> +#include <config_distro_bootcmd.h>
>> +
>> +#define CONFIG_EXTRA_ENV_SETTINGS \
>> +	"fdt_high=0xffffffffffffffff\0" \
>> +	"initrd_high=0xffffffffffffffff\0" \
>> +	"kernel_addr_r=0x80600000\0" \
>> +	"fdt_addr_r=0x82200000\0" \
>> +	"scriptaddr=0x82300000\0" \
>> +	"pxefile_addr_r=0x82400000\0" \
>> +	"ramdisk_addr_r=0x82500000\0" \
>> +	BOOTENV
>> +
>> +#endif /* __CONFIG_H */
>> -- 
>> 2.17.1
>>
>> _______________________________________________
>> U-Boot mailing list
>> U-Boot@lists.denx.de
>> https://lists.denx.de/listinfo/u-boot
> _______________________________________________
> U-Boot mailing list
> U-Boot@lists.denx.de
> https://lists.denx.de/listinfo/u-boot
>
Alexander Graf Jan. 17, 2019, 11:05 p.m. UTC | #3 
On 17.01.19 11:39, Anup Patel wrote:
> This patch adds SiFive FU540 board support. For now, only
> SiFive serial, SiFive PRCI, and Cadance MACB drivers are
> only enabled. The SiFive FU540 defconfig by default builds
> U-Boot for S-Mode because U-Boot on SiFive FU540 will run
> in S-Mode as payload of BBL or OpenSBI.
> 
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
> Signed-off-by: Atish Patra <atish.patra@wdc.com>

Reviewed-by: Alexander Graf <agraf@suse.de>


Alex
diff mbox series

Patch

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6879047ff7..36512a8995 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -14,11 +14,15 @@  config TARGET_AX25_AE350
 config TARGET_QEMU_VIRT
 	bool "Support QEMU Virt Board"
 
+config TARGET_SIFIVE_FU540
+	bool "Support SiFive FU540 Board"
+
 endchoice
 
 # board-specific options below
 source "board/AndesTech/ax25-ae350/Kconfig"
 source "board/emulation/qemu-riscv/Kconfig"
+source "board/sifive/fu540/Kconfig"
 
 # platform-specific options below
 source "arch/riscv/cpu/ax25/Kconfig"
diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
new file mode 100644
index 0000000000..6be3d88144
--- /dev/null
+++ b/board/sifive/fu540/Kconfig
@@ -0,0 +1,42 @@ 
+if TARGET_SIFIVE_FU540
+
+config SYS_BOARD
+	default "fu540"
+
+config SYS_VENDOR
+	default "sifive"
+
+config SYS_CPU
+	default "generic"
+
+config SYS_CONFIG_NAME
+	default "sifive-fu540"
+
+config SYS_TEXT_BASE
+	default 0x80000000 if !RISCV_SMODE
+	default 0x80200000 if RISCV_SMODE
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select GENERIC_RISCV
+	imply CMD_DHCP
+	imply CMD_EXT2
+	imply CMD_EXT4
+	imply CMD_FAT
+	imply CMD_FS_GENERIC
+	imply CMD_NET
+	imply CMD_PING
+	imply CLK_SIFIVE
+	imply CLK_SIFIVE_FU540_PRCI
+	imply DOS_PARTITION
+	imply EFI_PARTITION
+	imply IP_DYN
+	imply ISO_PARTITION
+	imply MACB
+	imply MII
+	imply NET_RANDOM_ETHADDR
+	imply PHY_LIB
+	imply PHY_MSCC
+	imply SIFIVE_SERIAL
+
+endif
diff --git a/board/sifive/fu540/MAINTAINERS b/board/sifive/fu540/MAINTAINERS
new file mode 100644
index 0000000000..702d803ad8
--- /dev/null
+++ b/board/sifive/fu540/MAINTAINERS
@@ -0,0 +1,9 @@ 
+SiFive FU540 BOARD
+M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Palmer Dabbelt <palmer@sifive.com>
+M:	Anup Patel <anup.patel@wdc.com>
+M:	Atish Patra <atish.patra@wdc.com>
+S:	Maintained
+F:	board/sifive/fu540/
+F:	include/configs/sifive-fu540.h
+F:	configs/sifive_fu540_defconfig
diff --git a/board/sifive/fu540/Makefile b/board/sifive/fu540/Makefile
new file mode 100644
index 0000000000..6e1862c475
--- /dev/null
+++ b/board/sifive/fu540/Makefile
@@ -0,0 +1,5 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2019 Western Digital Corporation or its affiliates.
+
+obj-y	+= fu540.o
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
new file mode 100644
index 0000000000..5adc4a3d4a
--- /dev/null
+++ b/board/sifive/fu540/fu540.c
@@ -0,0 +1,17 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+
+int board_init(void)
+{
+	/* For now nothing to do here. */
+
+	return 0;
+}
diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
new file mode 100644
index 0000000000..2f8cca9de0
--- /dev/null
+++ b/configs/sifive_fu540_defconfig
@@ -0,0 +1,11 @@ 
+CONFIG_RISCV=y
+CONFIG_TARGET_SIFIVE_FU540=y
+CONFIG_RISCV_SMODE=y
+CONFIG_ARCH_RV64I=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_FIT=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_DISPLAY_BOARDINFO=y
+CONFIG_CMD_MII=y
+CONFIG_OF_PRIOR_STAGE=y
diff --git a/include/configs/sifive-fu540.h b/include/configs/sifive-fu540.h
new file mode 100644
index 0000000000..7007b5f6af
--- /dev/null
+++ b/include/configs/sifive-fu540.h
@@ -0,0 +1,43 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2019 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_SDRAM_BASE		0x80000000
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
+
+#define CONFIG_SYS_LOAD_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_2M)
+
+#define CONFIG_SYS_MALLOC_LEN		SZ_8M
+
+#define CONFIG_SYS_BOOTM_LEN		SZ_16M
+
+#define CONFIG_STANDALONE_LOAD_ADDR	0x80200000
+
+/* Environment options */
+#define CONFIG_ENV_SIZE			SZ_4K
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(DHCP, dhcp, na)
+
+#include <config_distro_bootcmd.h>
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"fdt_high=0xffffffffffffffff\0" \
+	"initrd_high=0xffffffffffffffff\0" \
+	"kernel_addr_r=0x80600000\0" \
+	"fdt_addr_r=0x82200000\0" \
+	"scriptaddr=0x82300000\0" \
+	"pxefile_addr_r=0x82400000\0" \
+	"ramdisk_addr_r=0x82500000\0" \
+	BOOTENV
+
+#endif /* __CONFIG_H */