Merge https://source.denx.de/u-boot/custodians/u-boot-riscv

* Add StarFive VisionFive v2 Board support
* Support CONFIG_REMAKE_ELF
* Code cleanups for RISC-V architecture

3 files changed, 502 insertions, 0 deletions

diff --git a/doc/board/index.rst b/doc/board/index.rst
index 69e2cd5..b2da6ec 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -40,6 +40,7 @@ Board-specific doc
    sipeed/index
    socionext/index
    st/index
+   starfive/index
    ste/index
    tbs/index
    ti/index
diff --git a/doc/board/starfive/index.rst b/doc/board/starfive/index.rst
new file mode 100644
index 0000000..0c52dc7
--- /dev/null
+++ b/doc/board/starfive/index.rst
@@ -0,0 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+StarFive
+========
+
+.. toctree::
+   :maxdepth: 1
+
+   visionfive2
diff --git a/doc/board/starfive/visionfive2.rst b/doc/board/starfive/visionfive2.rst
new file mode 100644
index 0000000..22d2a31
--- /dev/null
+++ b/doc/board/starfive/visionfive2.rst
@@ -0,0 +1,492 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+StarFive VisionFive2
+====================
+
+JH7110 RISC-V SoC
+---------------------
+The JH7110 is 4+1 64-bit RISC-V SoC from StarFive.
+
+The StarFive VisionFive2 development platform is based on JH7110 and capable
+of running Linux.
+
+Mainline support
+----------------
+
+The support for following drivers are already enabled:
+
+1. ns16550 UART Driver.
+2. StarFive JH7110 clock Driver.
+3. StarFive JH7110 reset Driver.
+4. Cadence QSPI controller Driver.
+5. MMC SPI Driver for MMC/SD support.
+
+Booting from MMC using U-Boot SPL
+---------------------------------
+
+The current U-Boot port is supported in S-mode only and loaded from DRAM.
+
+A prior stage M-mode firmware/bootloader (e.g OpenSBI) is required to
+boot the u-boot.itb in S-mode and provide M-mode runtime services.
+
+Currently, the u-boot.itb is used as a dynamic of the OpenSBI FW_DYNAMIC
+firmware with the latest.
+
+Building
+~~~~~~~~
+
+1. Add the RISC-V toolchain to your PATH.
+2. Setup ARCH & cross compilation environment variable:
+
+.. code-block:: none
+
+   export CROSS_COMPILE=<riscv64 toolchain prefix>
+
+Before building U-Boot SPL, OpenSBI must be built first. OpenSBI can be
+cloned and built for JH7110 as below:
+
+.. code-block:: console
+
+	git clone https://github.com/riscv/opensbi.git
+	cd opensbi
+	make PLATFORM=generic FW_TEXT_START=0x40000000 FW_OPTIONS=0
+
+More detailed description of steps required to build FW_DYNAMIC firmware
+is beyond the scope of this document. Please refer OpenSBI documenation.
+(Note: OpenSBI git repo is at https://github.com/riscv/opensbi.git)
+
+Now build the U-Boot SPL and U-Boot proper
+
+.. code-block:: console
+
+	cd <U-Boot-dir>
+	make starfive_visionfive2_13b_defconfig
+	make OPENSBI=$(opensbi_dir)/opensbi/build/platform/generic/firmware/fw_dynamic.bin
+
+This will generate spl/u-boot-spl.bin and FIT image (u-boot.itb)
+
+u-boot-spl.bin cannot be used directly on StarFive VisionFive2,we need
+to convert the u-boot-spl.bin to u-boot-spl.bin.normal.out with
+the below command:
+
+	./spl_tool -c -f $(Uboot_PATH)/spl/u-boot-spl.bin
+
+More detailed description of spl_tool,please refer spl_tool documenation.
+(Note: spl_tool git repo is at https://github.com/starfive-tech/Tools/tree/master/spl_tool)
+
+This will generate u-boot-spl.bin.normal.out file.
+
+Flashing
+~~~~~~~~
+
+SPL loads the U-Boot SPL (u-boot-spl.bin.normal.out) from a partition with GUID type
+2E54B353-1271-4842-806F-E436D6AF6985
+
+U-Boot SPL expects a U-Boot FIT image (u-boot.itb) from a partition with GUID
+type BC13C2FF-59E6-4262-A352-B275FD6F7172
+
+FIT image (u-boot.itb) is a combination of fw_dynamic.bin, u-boot-nodtb.bin and
+device tree blob (jh7110-starfive-visionfive-2-v1.3b.dtb/jh7110-starfive-visionfive-2-v1.2a.dtb)
+
+Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch)
+
+.. code-block:: bash
+
+	sudo sgdisk --clear \
+	  --set-alignment=2 \
+	  --new=1:4096:8191 --change-name=1:spl --typecode=1:2E54B353-1271-4842-806F-E436D6AF6985\
+	  --new=2:8192:16383 --change-name=2:uboot --typecode=2:BC13C2FF-59E6-4262-A352-B275FD6F7172  \
+	  --new=3:16384:1654784 --change-name=3:system --typecode=3:EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 \
+	  /dev/sdb
+
+Program the SD card
+
+.. code-block:: bash
+
+	sudo dd if=u-boot-spl.bin.normal.out of=/dev/sdb1
+	sudo dd if=u-boot.itb of=/dev/sdb2
+
+	sudo mount /dev/sdb3 /mnt/
+	sudo cp u-boot-spl.bin.normal.out /mnt/
+	sudo cp u-boot.itb /mnt/
+	sudo cp Image.gz /mnt/
+	sudo cp initramfs.cpio.gz /mnt/
+	sudo cp jh7110-starfive-visionfive-2-v1.3b.dtb /mnt/
+	sudo umount /mnt
+
+Booting
+~~~~~~~
+
+Change DIP switches MSEL[1:0] are set to 10, select the boot mode to SD.
+Once you plugin the sdcard and power up, you should see the U-Boot prompt.
+
+Sample boot log from StarFive VisionFive2 board
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: none
+
+
+	U-Boot SPL 2023.04-rc2-00055-gfc43b9c51a-dirty (Mar 02 2023 - 10:51:39 +0800)
+	DDR version: dc2e84f0.
+	Trying to boot from MMC2
+
+	OpenSBI v1.2-80-g4b28afc
+	____                    _____ ____ _____
+	/ __ \                  / ____|  _ \_   _|
+	| |  | |_ __   ___ _ __ | (___ | |_) || |
+	| |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
+	| |__| | |_) |  __/ | | |____) | |_) || |_
+	\____/| .__/ \___|_| |_|_____/|___/_____|
+			| |
+			|_|
+
+	Platform Name             : StarFive VisionFive 2 v1.3B
+	Platform Features         : medeleg
+	Platform HART Count       : 5
+	Platform IPI Device       : aclint-mswi
+	Platform Timer Device     : aclint-mtimer @ 4000000Hz
+	Platform Console Device   : uart8250
+	Platform HSM Device       : ---
+	Platform PMU Device       : ---
+	Platform Reboot Device    : ---
+	Platform Shutdown Device  : ---
+	Platform Suspend Device   : ---
+	Firmware Base             : 0x40000000
+	Firmware Size             : 264 KB
+	Firmware RW Offset        : 0x20000
+	Runtime SBI Version       : 1.0
+
+	Domain0 Name              : root
+	Domain0 Boot HART         : 2
+	Domain0 HARTs             : 0*,1*,2*,3*,4*
+	Domain0 Region00          : 0x0000000002000000-0x000000000200ffff M: (I,R,W) S/U: ()
+	Domain0 Region01          : 0x0000000040000000-0x000000004001ffff M: (R,X) S/U: ()
+	Domain0 Region02          : 0x0000000040000000-0x000000004007ffff M: (R,W) S/U: ()
+	Domain0 Region03          : 0x0000000000000000-0xffffffffffffffff M: (R,W,X) S/U: (R,W,X)
+	Domain0 Next Address      : 0x0000000040200000
+	Domain0 Next Arg1         : 0x0000000040287970
+	Domain0 Next Mode         : S-mode
+	Domain0 SysReset          : yes
+	Domain0 SysSuspend        : yes
+
+	Boot HART ID              : 2
+	Boot HART Domain          : root
+	Boot HART Priv Version    : v1.11
+	Boot HART Base ISA        : rv64imafdcbx
+	Boot HART ISA Extensions  : none
+	Boot HART PMP Count       : 8
+	Boot HART PMP Granularity : 4096
+	Boot HART PMP Address Bits: 34
+	Boot HART MHPM Count      : 2
+	Boot HART MIDELEG         : 0x0000000000000222
+	Boot HART MEDELEG         : 0x000000000000b109
+
+
+	U-Boot 2023.04-rc2-00055-gfc43b9c51a-dirty (Mar 02 2023 - 10:51:39 +0800)
+
+	CPU:   rv64imac_zba_zbb
+	Model: StarFive VisionFive 2 v1.3B
+	DRAM:  8 GiB
+	Core:  107 devices, 18 uclasses, devicetree: separate
+	MMC:   mmc@16010000: 0, mmc@16020000: 1
+	Loading Environment from nowhere... OK
+	In:    serial@10000000
+	Out:   serial@10000000
+	Err:   serial@10000000
+	Net:   No ethernet found.
+	Working FDT set to ff74a340
+	Hit any key to stop autoboot:  0
+	StarFive #
+	StarFive #version
+	U-Boot 2023.04-rc2-00055-gfc43b9c51a-dirty (Mar 02 2023 - 10:51:39 +0800)
+
+	riscv64-buildroot-linux-gnu-gcc.br_real (Buildroot VF2_515_v1.0.0_rc4) 10.3.0
+	GNU ld (GNU Binutils) 2.36.1
+	StarFive #
+	StarFive #mmc dev 1
+	switch to partitions #0, OK
+	mmc1 is current device
+	StarFive #mmc info
+	Device: mmc@16020000
+	Manufacturer ID: 9f
+	OEM: 5449
+	Name: SD64G
+	Bus Speed: 50000000
+	Mode: SD High Speed (50MHz)
+	Rd Block Len: 512
+	SD version 3.0
+	High Capacity: Yes
+	Capacity: 58.3 GiB
+	Bus Width: 4-bit
+	Erase Group Size: 512 Bytes
+	StarFive #
+	StarFive #mmc part
+
+	Partition Map for MMC device 1  --   Partition Type: EFI
+
+	Part    Start LBA       End LBA         Name
+			Attributes
+			Type GUID
+			Partition GUID
+	1     0x00001000      0x00001fff      "spl"
+			attrs:  0x0000000000000000
+			type:   2e54b353-1271-4842-806f-e436d6af6985
+					(2e54b353-1271-4842-806f-e436d6af6985)
+			guid:   d5ee2056-3020-475b-9a33-25b4257c9f12
+	2     0x00002000      0x00003fff      "uboot"
+			attrs:  0x0000000000000000
+			type:   bc13c2ff-59e6-4262-a352-b275fd6f7172
+					(bc13c2ff-59e6-4262-a352-b275fd6f7172)
+			guid:   379ab7fe-fd0c-4149-b758-960c1cbfc0cc
+	3     0x00004000      0x00194000      "system"
+			attrs:  0x0000000000000000
+			type:   ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
+					(data)
+			guid:   539a6df9-4655-4953-8541-733ca36eb1db
+	StarFive #
+	StarFive #fatls mmc 1:3
+	6429424   Image.gz
+	717705   u-boot.itb
+	125437   u-boot-spl.bin.normal.out
+	152848495   initramfs.cpio.gz
+		11285   jh7110-starfive-visionfive-2-v1.3b.dtb
+
+	5 file(s), 0 dir(s)
+
+	StarFive #fatload mmc 1:3 ${kernel_addr_r} Image.gz
+	6429424 bytes read in 394 ms (15.6 MiB/s)
+	StarFive #fatload mmc 1:3 ${fdt_addr_r} jh7110-starfive-visionfive-2-v1.3b.dtb
+	11285 bytes read in 5 ms (2.2 MiB/s)
+	StarFive #fatload mmc 1:3 ${ramdisk_addr_r} initramfs.cpio.gz
+	152848495 bytes read in 9271 ms (15.7 MiB/s)
+	StarFive #booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r}
+	Uncompressing Kernel Image
+	## Flattened Device Tree blob at 46000000
+	Booting using the fdt blob at 0x46000000
+	Working FDT set to 46000000
+	Loading Ramdisk to f5579000, end fe73d86f ... OK
+	Loading Device Tree to 00000000f5573000, end 00000000f5578c14 ... OK
+	Working FDT set to f5573000
+
+	Starting kernel ...
+
+
+	] Linux version 6.2.0-starfive-00026-g11934a315b67 (wyh@wyh-VirtualBox) (riscv64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0, GNU ld (GNU Binutils for Ubuntu) 2.30) #1 SMP Thu Mar  2 14:51:36 CST 2023
+	[    0.000000] OF: fdt: Ignoring memory range 0x40000000 - 0x40200000
+	[    0.000000] Machine model: StarFive VisionFive 2 v1.3B
+	[    0.000000] efi: UEFI not found.
+	[    0.000000] Zone ranges:
+	[    0.000000]   DMA32    [mem 0x0000000040200000-0x00000000ffffffff]
+	[    0.000000]   Normal   [mem 0x0000000100000000-0x000000013fffffff]
+	[    0.000000] Movable zone start for each node
+	[    0.000000] Early memory node ranges
+	[    0.000000]   node   0: [mem 0x0000000040200000-0x000000013fffffff]
+	[    0.000000] Initmem setup node 0 [mem 0x0000000040200000-0x000000013fffffff]
+	[    0.000000] On node 0, zone DMA32: 512 pages in unavailable ranges
+	[    0.000000] SBI specification v1.0 detected
+	[    0.000000] SBI implementation ID=0x1 Version=0x10002
+	[    0.000000] SBI TIME extension detected
+	[    0.000000] SBI IPI extension detected
+	[    0.000000] SBI RFENCE extension detected
+	[    0.000000] SBI HSM extension detected
+	[    0.000000] CPU with hartid=0 is not available
+	[    0.000000] CPU with hartid=0 is not available
+	[    0.000000] CPU with hartid=0 is not available
+	[    0.000000] riscv: base ISA extensions acdfim
+	[    0.000000] riscv: ELF capabilities acdfim
+	[    0.000000] percpu: Embedded 18 pages/cpu s35960 r8192 d29576 u73728
+	[    0.000000] pcpu-alloc: s35960 r8192 d29576 u73728 alloc=18*4096
+	[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
+	[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 1031688
+	[    0.000000] Kernel command line: console=ttyS0,115200 debug rootwait earlycon=sbi
+	[    0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
+	[    0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
+	[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
+	[    0.000000] software IO TLB: area num 4.
+	[    0.000000] software IO TLB: mapped [mem 0x00000000f1573000-0x00000000f5573000] (64MB)
+	[    0.000000] Virtual kernel memory layout:
+	[    0.000000]       fixmap : 0xffffffc6fee00000 - 0xffffffc6ff000000   (2048 kB)
+	[    0.000000]       pci io : 0xffffffc6ff000000 - 0xffffffc700000000   (  16 MB)
+	[    0.000000]      vmemmap : 0xffffffc700000000 - 0xffffffc800000000   (4096 MB)
+	[    0.000000]      vmalloc : 0xffffffc800000000 - 0xffffffd800000000   (  64 GB)
+	[    0.000000]      modules : 0xffffffff0136a000 - 0xffffffff80000000   (2028 MB)
+	[    0.000000]       lowmem : 0xffffffd800000000 - 0xffffffd8ffe00000   (4094 MB)
+	[    0.000000]       kernel : 0xffffffff80000000 - 0xffffffffffffffff   (2047 MB)
+	[    0.000000] Memory: 3867604K/4192256K available (8012K kernel code, 4919K rwdata, 4096K rodata, 2190K init, 476K bss, 324652K reserved, 0K cma-reserved)
+	[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
+	[    0.000000] rcu: Hierarchical RCU implementation.
+	[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=4.
+	[    0.000000] rcu:     RCU debug extended QS entry/exit.
+	[    0.000000]  Tracing variant of Tasks RCU enabled.
+	[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
+	[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
+	[    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
+	[    0.000000] CPU with hartid=0 is not available
+	[    0.000000] riscv-intc: unable to find hart id for /cpus/cpu@0/interrupt-controller
+	[    0.000000] riscv-intc: 64 local interrupts mapped
+	[    0.000000] plic: interrupt-controller@c000000: mapped 136 interrupts with 4 handlers for 9 contexts.
+	[    0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
+	[    0.000000] riscv-timer: riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [4]
+	[    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 881590404240 ns
+	[    0.000003] sched_clock: 64 bits at 4MHz, resolution 250ns, wraps every 2199023255500ns
+	[    0.000437] Console: colour dummy device 80x25
+	[    0.000568] Calibrating delay loop (skipped), value calculated using timer frequency.. 8.00 BogoMIPS (lpj=16000)
+	[    0.000602] pid_max: default: 32768 minimum: 301
+	[    0.000752] LSM: initializing lsm=capability,integrity
+	[    0.001071] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
+	[    0.001189] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
+	[    0.004201] CPU node for /cpus/cpu@0 exist but the possible cpu range is :0-3
+	[    0.007426] cblist_init_generic: Setting adjustable number of callback queues.
+	[    0.007457] cblist_init_generic: Setting shift to 2 and lim to 1.
+	[    0.007875] riscv: ELF compat mode unsupported
+	[    0.007902] ASID allocator disabled (0 bits)
+	[    0.008405] rcu: Hierarchical SRCU implementation.
+	[    0.008426] rcu:     Max phase no-delay instances is 1000.
+	[    0.009247] EFI services will not be available.
+	[    0.010738] smp: Bringing up secondary CPUs ...
+	[    0.018358] smp: Brought up 1 node, 4 CPUs
+	[    0.021776] devtmpfs: initialized
+	[    0.027337] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
+	[    0.027389] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
+	[    0.027888] pinctrl core: initialized pinctrl subsystem
+	[    0.029881] NET: Registered PF_NETLINK/PF_ROUTE protocol family
+	[    0.030401] audit: initializing netlink subsys (disabled)
+	[    0.031041] audit: type=2000 audit(0.028:1): state=initialized audit_enabled=0 res=1
+	[    0.031943] cpuidle: using governor menu
+	[    0.043011] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
+	[    0.043033] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page
+	[    0.044943] iommu: Default domain type: Translated
+	[    0.044965] iommu: DMA domain TLB invalidation policy: strict mode
+	[    0.046089] SCSI subsystem initialized
+	[    0.046733] libata version 3.00 loaded.
+	[    0.047231] usbcore: registered new interface driver usbfs
+	[    0.047315] usbcore: registered new interface driver hub
+	[    0.047420] usbcore: registered new device driver usb
+	[    0.049770] vgaarb: loaded
+	[    0.050277] clocksource: Switched to clocksource riscv_clocksource
+	[    0.084690] NET: Registered PF_INET protocol family
+	[    0.085561] IP idents hash table entries: 65536 (order: 7, 524288 bytes, linear)
+	[    0.093010] tcp_listen_portaddr_hash hash table entries: 2048 (order: 4, 65536 bytes, linear)
+	[    0.093152] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
+	[    0.093224] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
+	[    0.093821] TCP bind hash table entries: 32768 (order: 9, 2097152 bytes, linear)
+	[    0.117880] TCP: Hash tables configured (established 32768 bind 32768)
+	[    0.118500] UDP hash table entries: 2048 (order: 5, 196608 bytes, linear)
+	[    0.118881] UDP-Lite hash table entries: 2048 (order: 5, 196608 bytes, linear)
+	[    0.119675] NET: Registered PF_UNIX/PF_LOCAL protocol family
+	[    0.121749] RPC: Registered named UNIX socket transport module.
+	[    0.121776] RPC: Registered udp transport module.
+	[    0.121784] RPC: Registered tcp transport module.
+	[    0.121791] RPC: Registered tcp NFSv4.1 backchannel transport module.
+	[    0.121816] PCI: CLS 0 bytes, default 64
+	[    0.124101] Unpacking initramfs...
+	[    0.125468] workingset: timestamp_bits=46 max_order=20 bucket_order=0
+	[    0.128372] NFS: Registering the id_resolver key type
+	[    0.128498] Key type id_resolver registered
+	[    0.128525] Key type id_legacy registered
+	[    0.128625] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
+	[    0.128649] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
+	[    0.129358] 9p: Installing v9fs 9p2000 file system support
+	[    0.130179] NET: Registered PF_ALG protocol family
+	[    0.130499] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247)
+	[    0.130544] io scheduler mq-deadline registered
+	[    0.130556] io scheduler kyber registered
+	[    0.416754] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
+	[    0.420857] SuperH (H)SCI(F) driver initialized
+	[    0.443735] loop: module loaded
+	[    0.448605] e1000e: Intel(R) PRO/1000 Network Driver
+	[    0.448627] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
+	[    0.450716] usbcore: registered new interface driver uas
+	[    0.450832] usbcore: registered new interface driver usb-storage
+	[    0.451638] mousedev: PS/2 mouse device common for all mice
+	[    0.453465] sdhci: Secure Digital Host Controller Interface driver
+	[    0.453487] sdhci: Copyright(c) Pierre Ossman
+	[    0.453584] sdhci-pltfm: SDHCI platform and OF driver helper
+	[    0.454140] usbcore: registered new interface driver usbhid
+	[    0.454174] usbhid: USB HID core driver
+	[    0.454833] riscv-pmu-sbi: SBI PMU extension is available
+	[    0.454920] riscv-pmu-sbi: 16 firmware and 4 hardware counters
+	[    0.454942] riscv-pmu-sbi: Perf sampling/filtering is not supported as sscof extension is not available
+	[    0.457071] NET: Registered PF_INET6 protocol family
+	[    0.460627] Segment Routing with IPv6
+	[    0.460821] In-situ OAM (IOAM) with IPv6
+	[    0.461005] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
+	[    0.462712] NET: Registered PF_PACKET protocol family
+	[    0.462933] 9pnet: Installing 9P2000 support
+	[    0.463141] Key type dns_resolver registered
+	[    0.463168] start plist test
+	[    0.469261] end plist test
+	[    0.506774] debug_vm_pgtable: [debug_vm_pgtable         ]: Validating architecture page table helpers
+	[    0.553683] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.
+	[    0.554741] starfive-jh7110-sys-pinctrl 13040000.pinctrl: StarFive GPIO chip registered 64 GPIOs
+	[    0.555900] gpio gpiochip1: Static allocation of GPIO base is deprecated, use dynamic allocation.
+	[    0.556772] starfive-jh7110-aon-pinctrl 17020000.pinctrl: StarFive GPIO chip registered 4 GPIOs
+	[    0.559454] printk: console [ttyS0] disabled
+	[    0.579948] 10000000.serial: ttyS0 at MMIO 0x10000000 (irq = 3, base_baud = 1500000) is a 16550A
+	[    0.580082] printk: console [ttyS0] enabled
+	[   13.642680] Freeing initrd memory: 149264K
+	[   13.651051] Freeing unused kernel image (initmem) memory: 2188K
+	[   13.666431] Run /init as init process
+	[   13.670116]   with arguments:
+	[   13.673168]     /init
+	[   13.675488]   with environment:
+	[   13.678668]     HOME=/
+	[   13.681038]     TERM=linux
+	Starting syslogd: OK
+	Starting klogd: OK
+	Running sysctl: OK
+	Populating /dev using udev: [   14.145944] udevd[93]: starting version 3.2.10
+	[   15.214287] random: crng init done
+	[   15.240816] udevd[94]: starting eudev-3.2.10
+	done
+	Saving random seed: OK
+	Starting system message bus: dbus[122]: Unknown username "pulse" in message bus configuration file
+	done
+	Starting rpcbind: OK
+	Starting iptables: OK
+	Starting bluetoothd: OK
+	Starting network: Waiting for interface eth0 to appear............... timeout!
+	run-parts: /etc/network/if-pre-up.d/wait_iface: exit status 1
+	FAIL
+	Starting dropbear sshd: OK
+	Starting NFS statd: OK
+	Starting NFS services: OK
+	Starting NFS daemon: rpc.nfsd: Unable to access /proc/fs/nfsd errno 2 (No such file or directory).
+	Please try, as root, 'mount -t nfsd nfsd /proc/fs/nfsd' and then restart rpc.nfsd to correct the problem
+	FAIL
+	Starting NFS mountd: OK
+	Starting DHCP server: FAIL
+
+	Welcome to Buildroot
+	buildroot login:
+
+Booting from SPI
+----------------
+
+Use Building steps from "Booting from MMC using U-Boot SPL" section.
+
+Partition the SPI in Linux via mtdblock. (Require to boot the board in
+SD boot mode by enabling MTD block in Linux)
+
+Use prebuilt image from here [1], which support to partition the SPI flash.
+
+
+Program the SPI (Require to boot the board in SD boot mode)
+
+Execute below steps on U-Boot proper,
+
+.. code-block:: none
+
+  sf probe
+  fatload mmc 1:3 $kernel_addr_r u-boot.itb
+  sf update $kernel_addr_r 0x100000 $filesize
+
+  fatload mmc 1:3 $kernel_addr_r u-boot-spl.bin.normal.out
+  sf update $kernel_addr_r 0x0 $filesize
+
+
+Power off the board
+
+Change DIP switches MSEL[1:0] are set to 00, select the boot mode to flash
+
+Power up the board.