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diff --git a/doc/board/sifive/unleashed.rst b/doc/board/sifive/unleashed.rst new file mode 100644 index 0000000000..4e4c852ff3 --- /dev/null +++ b/doc/board/sifive/unleashed.rst @@ -0,0 +1,579 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +HiFive Unleashed +================ + +FU540-C000 RISC-V SoC +--------------------- +The FU540-C000 is the world’s first 4+1 64-bit RISC-V SoC from SiFive. + +The HiFive Unleashed development platform is based on FU540-C000 and capable +of running Linux. + +Mainline support +---------------- + +The support for following drivers are already enabled: + +1. SiFive UART Driver. +2. SiFive PRCI Driver for clock. +3. Cadence MACB ethernet driver for networking support. +4. SiFive SPI Driver. +5. MMC SPI Driver for MMC/SD support. + +Booting from MMC using FSBL +--------------------------- + +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> + +3. make sifive_fu540_defconfig +4. make + +Flashing +~~~~~~~~ + +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.bin in S-mode and provide M-mode runtime services. + +Currently, the u-boot.bin is used as a payload of the OpenSBI FW_PAYLOAD +firmware. We need to compile OpenSBI with below command: + +.. code-block:: none + + make PLATFORM=generic FW_PAYLOAD_PATH=<path to u-boot-dtb.bin> + +More detailed description of steps required to build FW_PAYLOAD firmware +is beyond the scope of this document. Please refer OpenSBI documenation. +(Note: OpenSBI git repo is at https://github.com/riscv/opensbi.git) + +Once the prior stage firmware/bootloader binary is generated, it should be +copied to the first partition of the sdcard. + +.. code-block:: none + + sudo dd if=<prior_stage_firmware_binary> of=/dev/disk2s1 bs=1024 + +Booting +~~~~~~~ + +Once you plugin the sdcard and power up, you should see the U-Boot prompt. + +Sample boot log from HiFive Unleashed board +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: none + + U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530) + + CPU: rv64imafdc + Model: SiFive HiFive Unleashed A00 + DRAM: 8 GiB + MMC: spi@10050000:mmc@0: 0 + In: serial@10010000 + Out: serial@10010000 + Err: serial@10010000 + Net: eth0: ethernet@10090000 + Hit any key to stop autoboot: 0 + => version + U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530) + + riscv64-linux-gcc.br_real (Buildroot 2018.11-rc2-00003-ga0787e9) 8.2.0 + GNU ld (GNU Binutils) 2.31.1 + => mmc info + Device: spi@10050000:mmc@0 + Manufacturer ID: 3 + OEM: 5344 + Name: SU08G + Bus Speed: 20000000 + Mode: SD Legacy + Rd Block Len: 512 + SD version 2.0 + High Capacity: Yes + Capacity: 7.4 GiB + Bus Width: 1-bit + Erase Group Size: 512 Bytes + => mmc part + + Partition Map for MMC device 0 -- Partition Type: EFI + + Part Start LBA End LBA Name + Attributes + Type GUID + Partition GUID + 1 0x00000800 0x000107ff "bootloader" + attrs: 0x0000000000000000 + type: 2e54b353-1271-4842-806f-e436d6af6985 + guid: 393bbd36-7111-491c-9869-ce24008f6403 + 2 0x00040800 0x00ecdfde "" + attrs: 0x0000000000000000 + type: 0fc63daf-8483-4772-8e79-3d69d8477de4 + guid: 7fc9a949-5480-48c7-b623-04923080757f + +Now you can configure your networking, tftp server and use tftp boot method to +load uImage. + +.. code-block:: none + + => setenv ipaddr 10.206.7.133 + => setenv netmask 255.255.252.0 + => setenv serverip 10.206.4.143 + => setenv gateway 10.206.4.1 + +If you want to use a flat kernel image such as Image file + +.. code-block:: none + + => tftpboot ${kernel_addr_r} /sifive/fu540/Image + ethernet@10090000: PHY present at 0 + ethernet@10090000: Starting autonegotiation... + ethernet@10090000: Autonegotiation complete + ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) + Using ethernet@10090000 device + TFTP from server 10.206.4.143; our IP address is 10.206.7.133 + Filename '/sifive/fu540/Image'. + Load address: 0x84000000 + Loading: ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ########################################## + 1.2 MiB/s + done + Bytes transferred = 8867100 (874d1c hex) + +Or if you want to use a compressed kernel image file such as Image.gz + +.. code-block:: none + + => tftpboot ${kernel_addr_r} /sifive/fu540/Image.gz + ethernet@10090000: PHY present at 0 + ethernet@10090000: Starting autonegotiation... + ethernet@10090000: Autonegotiation complete + ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) + Using ethernet@10090000 device + TFTP from server 10.206.4.143; our IP address is 10.206.7.133 + Filename '/sifive/fu540/Image.gz'. + Load address: 0x84000000 + Loading: ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ########################################## + 1.2 MiB/s + done + Bytes transferred = 4809458 (4962f2 hex) + =>setenv kernel_comp_addr_r 0x90000000 + =>setenv kernel_comp_size 0x500000 + +By this time, correct kernel image is loaded and required environment variables +are set. You can proceed to load the ramdisk and device tree from the tftp server +as well. + +.. code-block:: none + + => tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk + ethernet@10090000: PHY present at 0 + ethernet@10090000: Starting autonegotiation... + ethernet@10090000: Autonegotiation complete + ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) + Using ethernet@10090000 device + TFTP from server 10.206.4.143; our IP address is 10.206.7.133 + Filename '/sifive/fu540/uRamdisk'. + Load address: 0x88300000 + Loading: ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ################################################################# + ############## + 418.9 KiB/s + done + Bytes transferred = 2398272 (249840 hex) + => tftpboot ${fdt_addr_r} /sifive/fu540/hifive-unleashed-a00.dtb + ethernet@10090000: PHY present at 0 + ethernet@10090000: Starting autonegotiation... + ethernet@10090000: Autonegotiation complete + ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00) + Using ethernet@10090000 device + TFTP from server 10.206.4.143; our IP address is 10.206.7.133 + Filename '/sifive/fu540/hifive-unleashed-a00.dtb'. + Load address: 0x88000000 + Loading: ## + 1000 Bytes/s + done + Bytes transferred = 5614 (15ee hex) + => setenv bootargs "root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi" + => booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r} + ## Loading init Ramdisk from Legacy Image at 88300000 ... + Image Name: Linux RootFS + Image Type: RISC-V Linux RAMDisk Image (uncompressed) + Data Size: 2398208 Bytes = 2.3 MiB + Load Address: 00000000 + Entry Point: 00000000 + Verifying Checksum ... OK + ## Flattened Device Tree blob at 88000000 + Booting using the fdt blob at 0x88000000 + Using Device Tree in place at 0000000088000000, end 00000000880045ed + + Starting kernel ... + + [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 + [ 0.000000] Linux version 5.3.0-rc1-00003-g460ac558152f (anup@anup-lab-machine) (gcc version 8.2.0 (Buildroot 2018.11-rc2-00003-ga0787e9)) #6 SMP Mon Jul 22 10:01:01 IST 2019 + [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') + [ 0.000000] printk: bootconsole [sbi0] enabled + [ 0.000000] Initial ramdisk at: 0x(____ptrval____) (2398208 bytes) + [ 0.000000] Zone ranges: + [ 0.000000] DMA32 [mem 0x0000000080200000-0x00000000ffffffff] + [ 0.000000] Normal [mem 0x0000000100000000-0x000000027fffffff] + [ 0.000000] Movable zone start for each node + [ 0.000000] Early memory node ranges + [ 0.000000] node 0: [mem 0x0000000080200000-0x000000027fffffff] + [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000027fffffff] + [ 0.000000] software IO TLB: mapped [mem 0xfbfff000-0xfffff000] (64MB) + [ 0.000000] CPU with hartid=0 is not available + [ 0.000000] CPU with hartid=0 is not available + [ 0.000000] elf_hwcap is 0x112d + [ 0.000000] percpu: Embedded 18 pages/cpu s34584 r8192 d30952 u73728 + [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2067975 + [ 0.000000] Kernel command line: root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi + [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) + [ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) + [ 0.000000] Sorting __ex_table... + [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off + [ 0.000000] Memory: 8182308K/8386560K available (5916K kernel code, 368K rwdata, 1840K rodata, 213K init, 304K bss, 204252K 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=8 to nr_cpu_ids=4. + [ 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: 0, nr_irqs: 0, preallocated irqs: 0 + [ 0.000000] plic: mapped 53 interrupts with 4 handlers for 9 contexts. + [ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1] + [ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns + [ 0.000006] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns + [ 0.008559] Console: colour dummy device 80x25 + [ 0.012989] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000) + [ 0.023104] pid_max: default: 32768 minimum: 301 + [ 0.028273] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) + [ 0.035765] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) + [ 0.045307] rcu: Hierarchical SRCU implementation. + [ 0.049875] smp: Bringing up secondary CPUs ... + [ 0.055729] smp: Brought up 1 node, 4 CPUs + [ 0.060599] devtmpfs: initialized + [ 0.064819] random: get_random_u32 called from bucket_table_alloc.isra.10+0x4e/0x160 with crng_init=0 + [ 0.073720] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns + [ 0.083176] futex hash table entries: 1024 (order: 4, 65536 bytes, linear) + [ 0.090721] NET: Registered protocol family 16 + [ 0.106319] vgaarb: loaded + [ 0.108670] SCSI subsystem initialized + [ 0.112515] usbcore: registered new interface driver usbfs + [ 0.117758] usbcore: registered new interface driver hub + [ 0.123167] usbcore: registered new device driver usb + [ 0.128905] clocksource: Switched to clocksource riscv_clocksource + [ 0.141239] NET: Registered protocol family 2 + [ 0.145506] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear) + [ 0.153754] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear) + [ 0.163466] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear) + [ 0.173468] TCP: Hash tables configured (established 65536 bind 65536) + [ 0.179739] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear) + [ 0.186627] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear) + [ 0.194117] NET: Registered protocol family 1 + [ 0.198417] RPC: Registered named UNIX socket transport module. + [ 0.203887] RPC: Registered udp transport module. + [ 0.208664] RPC: Registered tcp transport module. + [ 0.213429] RPC: Registered tcp NFSv4.1 backchannel transport module. + [ 0.219944] PCI: CLS 0 bytes, default 64 + [ 0.224170] Unpacking initramfs... + [ 0.262347] Freeing initrd memory: 2336K + [ 0.266531] workingset: timestamp_bits=62 max_order=21 bucket_order=0 + [ 0.280406] NFS: Registering the id_resolver key type + [ 0.284798] Key type id_resolver registered + [ 0.289048] Key type id_legacy registered + [ 0.293114] nfs4filelayout_init: NFSv4 File Layout Driver Registering... + [ 0.300262] NET: Registered protocol family 38 + [ 0.304432] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) + [ 0.311862] io scheduler mq-deadline registered + [ 0.316461] io scheduler kyber registered + [ 0.356421] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled + [ 0.363004] 10010000.serial: ttySIF0 at MMIO 0x10010000 (irq = 4, base_baud = 0) is a SiFive UART v0 + [ 0.371468] printk: console [ttySIF0] enabled + [ 0.371468] printk: console [ttySIF0] enabled + [ 0.380223] printk: bootconsole [sbi0] disabled + [ 0.380223] printk: bootconsole [sbi0] disabled + [ 0.389589] 10011000.serial: ttySIF1 at MMIO 0x10011000 (irq = 1, base_baud = 0) is a SiFive UART v0 + [ 0.398680] [drm] radeon kernel modesetting enabled. + [ 0.412395] loop: module loaded + [ 0.415214] sifive_spi 10040000.spi: mapped; irq=3, cs=1 + [ 0.420628] sifive_spi 10050000.spi: mapped; irq=5, cs=1 + [ 0.425897] libphy: Fixed MDIO Bus: probed + [ 0.429964] macb 10090000.ethernet: Registered clk switch 'sifive-gemgxl-mgmt' + [ 0.436743] macb: GEM doesn't support hardware ptp. + [ 0.441621] libphy: MACB_mii_bus: probed + [ 0.601316] Microsemi VSC8541 SyncE 10090000.ethernet-ffffffff:00: attached PHY driver [Microsemi VSC8541 SyncE] (mii_bus:phy_addr=10090000.ethernet-ffffffff:00, irq=POLL) + [ 0.615857] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 6 (70:b3:d5:92:f2:f3) + [ 0.625634] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k + [ 0.631381] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. + [ 0.637382] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver + [ 0.643799] ehci-pci: EHCI PCI platform driver + [ 0.648261] ehci-platform: EHCI generic platform driver + [ 0.653497] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver + [ 0.659599] ohci-pci: OHCI PCI platform driver + [ 0.664055] ohci-platform: OHCI generic platform driver + [ 0.669448] usbcore: registered new interface driver uas + [ 0.674575] usbcore: registered new interface driver usb-storage + [ 0.680642] mousedev: PS/2 mouse device common for all mice + [ 0.709493] mmc_spi spi1.0: SD/MMC host mmc0, no DMA, no WP, no poweroff, cd polling + [ 0.716615] usbcore: registered new interface driver usbhid + [ 0.722023] usbhid: USB HID core driver + [ 0.726738] NET: Registered protocol family 10 + [ 0.731359] Segment Routing with IPv6 + [ 0.734332] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver + [ 0.740687] NET: Registered protocol family 17 + [ 0.744660] Key type dns_resolver registered + [ 0.806775] mmc0: host does not support reading read-only switch, assuming write-enable + [ 0.814020] mmc0: new SDHC card on SPI + [ 0.820137] mmcblk0: mmc0:0000 SU08G 7.40 GiB + [ 0.850220] mmcblk0: p1 p2 + [ 3.821524] macb 10090000.ethernet eth0: link up (1000/Full) + [ 3.828938] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready + [ 3.848919] Sending DHCP requests .., OK + [ 6.252076] IP-Config: Got DHCP answer from 10.206.4.1, my address is 10.206.7.133 + [ 6.259624] IP-Config: Complete: + [ 6.262831] device=eth0, hwaddr=70:b3:d5:92:f2:f3, ipaddr=10.206.7.133, mask=255.255.252.0, gw=10.206.4.1 + [ 6.272809] host=dhcp-10-206-7-133, domain=sdcorp.global.sandisk.com, nis-domain=(none) + [ 6.281228] bootserver=10.206.126.11, rootserver=10.206.126.11, rootpath= + [ 6.281232] nameserver0=10.86.1.1, nameserver1=10.86.2.1 + [ 6.294179] ntpserver0=10.86.1.1, ntpserver1=10.86.2.1 + [ 6.301026] Freeing unused kernel memory: 212K + [ 6.304683] This architecture does not have kernel memory protection. + [ 6.311121] Run /init as init process + _ _ + | ||_| + | | _ ____ _ _ _ _ + | || | _ \| | | |\ \/ / + | || | | | | |_| |/ \ + |_||_|_| |_|\____|\_/\_/ + + Busybox Rootfs + + Please press Enter to activate this console. + / # + +Booting from MMC using U-Boot SPL +--------------------------------- + +Building +~~~~~~~~ + +Before building U-Boot SPL, OpenSBI must be built first. OpenSBI can be +cloned and built for FU540 as below: + +.. code-block:: console + + git clone https://github.com/riscv/opensbi.git + cd opensbi + make PLATFORM=generic + export OPENSBI=<path to opensbi/build/platform/generic/firmware/fw_dynamic.bin> + +Now build the U-Boot SPL and U-Boot proper + +.. code-block:: console + + cd <U-Boot-dir> + make sifive_fu540_defconfig + make + +This will generate spl/u-boot-spl.bin and FIT image (u-boot.itb) + + +Flashing +~~~~~~~~ + +ZSBL loads the U-Boot SPL (u-boot-spl.bin) from a partition with GUID type +5B193300-FC78-40CD-8002-E86C45580B47 + +U-Boot SPL expects a U-Boot FIT image (u-boot.itb) from a partition with GUID +type 2E54B353-1271-4842-806F-E436D6AF6985 + +FIT image (u-boot.itb) is a combination of fw_dynamic.bin, u-boot-nodtb.bin and +device tree blob (hifive-unleashed-a00.dtb) + +Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch) + +.. code-block:: none + + # sudo sgdisk --clear \ + > --set-alignment=2 \ + > --new=1:34:2081 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \ + > --new=2:2082:10273 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \ + > --new=3:10274: --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \ + > /dev/sda + +Program the SD card + +.. code-block:: none + + sudo dd if=spl/u-boot-spl.bin of=/dev/sda seek=34 + sudo dd if=u-boot.itb of=/dev/sda seek=2082 + +Booting +~~~~~~~ + +Once you plugin the sdcard and power up, you should see the U-Boot prompt. + +Sample boot log from HiFive Unleashed board +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: none + + U-Boot SPL 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) + Trying to boot from MMC1 + + + U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) + + CPU: rv64imafdc + Model: SiFive HiFive Unleashed A00 + DRAM: 8 GiB + MMC: spi@10050000:mmc@0: 0 + In: serial@10010000 + Out: serial@10010000 + Err: serial@10010000 + Net: eth0: ethernet@10090000 + Hit any key to stop autoboot: 0 + => version + U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) + + riscv64-unknown-linux-gnu-gcc (crosstool-NG 1.24.0.37-3f461da) 9.2.0 + GNU ld (crosstool-NG 1.24.0.37-3f461da) 2.32 + => mmc info + Device: spi@10050000:mmc@0 + Manufacturer ID: 3 + OEM: 5344 + Name: SC16G + Bus Speed: 20000000 + Mode: SD Legacy + Rd Block Len: 512 + SD version 2.0 + High Capacity: Yes + Capacity: 14.8 GiB + Bus Width: 1-bit + Erase Group Size: 512 Bytes + => mmc part + + Partition Map for MMC device 0 -- Partition Type: EFI + + Part Start LBA End LBA Name + Attributes + Type GUID + Partition GUID + 1 0x00000022 0x00000821 "loader1" + attrs: 0x0000000000000000 + type: 5b193300-fc78-40cd-8002-e86c45580b47 + guid: 66e2b5d2-74db-4df8-ad6f-694b3617f87f + 2 0x00000822 0x00002821 "loader2" + attrs: 0x0000000000000000 + type: 2e54b353-1271-4842-806f-e436d6af6985 + guid: 8befaeaf-bca0-435d-b002-e201f37c0a2f + 3 0x00002822 0x01dacbde "rootfs" + attrs: 0x0000000000000000 + type: 0fc63daf-8483-4772-8e79-3d69d8477de4 + type: linux + guid: 9faa81b6-39b1-4418-af5e-89c48f29c20d + +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. + +.. code-block:: none + + # sgdisk --clear \ + > --set-alignment=2 \ + > --new=1:40:2087 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \ + > --new=2:2088:10279 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \ + > --new=3:10536:65494 --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \ + > /dev/mtdblock0 + +Program the SPI (Require to boot the board in SD boot mode) + +Execute below steps on U-Boot proper, + +.. code-block:: none + + tftpboot $kernel_addr_r u-boot-spl.bin + sf erase 0x5000 $filesize + sf write $kernel_addr_r 0x5000 $filesize + + tftpboot $kernel_addr_r u-boot.itb + sf erase 0x105000 $filesize + sf write $kernel_addr_r 0x105000 $filesize + +Power off the board + +Change DIP switches MSEL[3:0] are set to 0110 + +Power up the board. + +[1] https://github.com/amarula/bsp-sifive |