1.. SPDX-License-Identifier: GPL-2.0+ 2 3HiFive Unleashed 4================ 5 6FU540-C000 RISC-V SoC 7--------------------- 8The FU540-C000 is the world’s first 4+1 64-bit RISC-V SoC from SiFive. 9 10The HiFive Unleashed development platform is based on FU540-C000 and capable 11of running Linux. 12 13Mainline support 14---------------- 15 16The support for following drivers are already enabled: 17 181. SiFive UART Driver. 192. SiFive PRCI Driver for clock. 203. Cadence MACB ethernet driver for networking support. 214. SiFive SPI Driver. 225. MMC SPI Driver for MMC/SD support. 23 24Booting from MMC using FSBL 25--------------------------- 26 27Building 28~~~~~~~~ 29 301. Add the RISC-V toolchain to your PATH. 312. Setup ARCH & cross compilation environment variable: 32 33.. code-block:: none 34 35 export CROSS_COMPILE=<riscv64 toolchain prefix> 36 373. make sifive_fu540_defconfig 384. make 39 40Flashing 41~~~~~~~~ 42 43The current U-Boot port is supported in S-mode only and loaded from DRAM. 44 45A prior stage M-mode firmware/bootloader (e.g OpenSBI) is required to 46boot the u-boot.bin in S-mode and provide M-mode runtime services. 47 48Currently, the u-boot.bin is used as a payload of the OpenSBI FW_PAYLOAD 49firmware. We need to compile OpenSBI with below command: 50 51.. code-block:: none 52 53 make PLATFORM=generic FW_PAYLOAD_PATH=<path to u-boot-dtb.bin> 54 55More detailed description of steps required to build FW_PAYLOAD firmware 56is beyond the scope of this document. Please refer OpenSBI documenation. 57(Note: OpenSBI git repo is at https://github.com/riscv/opensbi.git) 58 59Once the prior stage firmware/bootloader binary is generated, it should be 60copied to the first partition of the sdcard. 61 62.. code-block:: none 63 64 sudo dd if=<prior_stage_firmware_binary> of=/dev/disk2s1 bs=1024 65 66Booting 67~~~~~~~ 68 69Once you plugin the sdcard and power up, you should see the U-Boot prompt. 70 71Sample boot log from HiFive Unleashed board 72~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 74.. code-block:: none 75 76 U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530) 77 78 CPU: rv64imafdc 79 Model: SiFive HiFive Unleashed A00 80 DRAM: 8 GiB 81 MMC: spi@10050000:mmc@0: 0 82 In: serial@10010000 83 Out: serial@10010000 84 Err: serial@10010000 85 Net: eth0: ethernet@10090000 86 Hit any key to stop autoboot: 0 87 => version 88 U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530) 89 90 riscv64-linux-gcc.br_real (Buildroot 2018.11-rc2-00003-ga0787e9) 8.2.0 91 GNU ld (GNU Binutils) 2.31.1 92 => mmc info 93 Device: spi@10050000:mmc@0 94 Manufacturer ID: 3 95 OEM: 5344 96 Name: SU08G 97 Bus Speed: 20000000 98 Mode: SD Legacy 99 Rd Block Len: 512 100 SD version 2.0 101 High Capacity: Yes 102 Capacity: 7.4 GiB 103 Bus Width: 1-bit 104 Erase Group Size: 512 Bytes 105 => mmc part 106 107 Partition Map for MMC device 0 -- Partition Type: EFI 108 109 Part Start LBA End LBA Name 110 Attributes 111 Type GUID 112 Partition GUID 113 1 0x00000800 0x000107ff "bootloader" 114 attrs: 0x0000000000000000 115 type: 2e54b353-1271-4842-806f-e436d6af6985 116 guid: 393bbd36-7111-491c-9869-ce24008f6403 117 2 0x00040800 0x00ecdfde "" 118 attrs: 0x0000000000000000 119 type: 0fc63daf-8483-4772-8e79-3d69d8477de4 120 guid: 7fc9a949-5480-48c7-b623-04923080757f 121 122Now you can configure your networking, tftp server and use tftp boot method to 123load uImage. 124 125.. code-block:: none 126 127 => setenv ipaddr 10.206.7.133 128 => setenv netmask 255.255.252.0 129 => setenv serverip 10.206.4.143 130 => setenv gateway 10.206.4.1 131 132If you want to use a flat kernel image such as Image file 133 134.. code-block:: none 135 136 => tftpboot ${kernel_addr_r} /sifive/fu540/Image 137 ethernet@10090000: PHY present at 0 138 ethernet@10090000: Starting autonegotiation... 139 ethernet@10090000: Autonegotiation complete 140 ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) 141 Using ethernet@10090000 device 142 TFTP from server 10.206.4.143; our IP address is 10.206.7.133 143 Filename '/sifive/fu540/Image'. 144 Load address: 0x84000000 145 Loading: ################################################################# 146 ################################################################# 147 ################################################################# 148 ################################################################# 149 ################################################################# 150 ################################################################# 151 ################################################################# 152 ################################################################# 153 ################################################################# 154 ################################################################# 155 ################################################################# 156 ################################################################# 157 ################################################################# 158 ################################################################# 159 ################################################################# 160 ################################################################# 161 ################################################################# 162 ################################################################# 163 ################################################################# 164 ################################################################# 165 ################################################################# 166 ################################################################# 167 ################################################################# 168 ################################################################# 169 ################################################################# 170 ################################################################# 171 ########################################## 172 1.2 MiB/s 173 done 174 Bytes transferred = 8867100 (874d1c hex) 175 176Or if you want to use a compressed kernel image file such as Image.gz 177 178.. code-block:: none 179 180 => tftpboot ${kernel_addr_r} /sifive/fu540/Image.gz 181 ethernet@10090000: PHY present at 0 182 ethernet@10090000: Starting autonegotiation... 183 ethernet@10090000: Autonegotiation complete 184 ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) 185 Using ethernet@10090000 device 186 TFTP from server 10.206.4.143; our IP address is 10.206.7.133 187 Filename '/sifive/fu540/Image.gz'. 188 Load address: 0x84000000 189 Loading: ################################################################# 190 ################################################################# 191 ################################################################# 192 ################################################################# 193 ################################################################# 194 ################################################################# 195 ################################################################# 196 ################################################################# 197 ################################################################# 198 ################################################################# 199 ################################################################# 200 ################################################################# 201 ################################################################# 202 ################################################################# 203 ################################################################# 204 ################################################################# 205 ################################################################# 206 ################################################################# 207 ################################################################# 208 ################################################################# 209 ################################################################# 210 ################################################################# 211 ################################################################# 212 ################################################################# 213 ################################################################# 214 ################################################################# 215 ########################################## 216 1.2 MiB/s 217 done 218 Bytes transferred = 4809458 (4962f2 hex) 219 =>setenv kernel_comp_addr_r 0x90000000 220 =>setenv kernel_comp_size 0x500000 221 222By this time, correct kernel image is loaded and required environment variables 223are set. You can proceed to load the ramdisk and device tree from the tftp server 224as well. 225 226.. code-block:: none 227 228 => tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk 229 ethernet@10090000: PHY present at 0 230 ethernet@10090000: Starting autonegotiation... 231 ethernet@10090000: Autonegotiation complete 232 ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00) 233 Using ethernet@10090000 device 234 TFTP from server 10.206.4.143; our IP address is 10.206.7.133 235 Filename '/sifive/fu540/uRamdisk'. 236 Load address: 0x88300000 237 Loading: ################################################################# 238 ################################################################# 239 ################################################################# 240 ################################################################# 241 ################################################################# 242 ################################################################# 243 ################################################################# 244 ############## 245 418.9 KiB/s 246 done 247 Bytes transferred = 2398272 (249840 hex) 248 => tftpboot ${fdt_addr_r} /sifive/fu540/hifive-unleashed-a00.dtb 249 ethernet@10090000: PHY present at 0 250 ethernet@10090000: Starting autonegotiation... 251 ethernet@10090000: Autonegotiation complete 252 ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00) 253 Using ethernet@10090000 device 254 TFTP from server 10.206.4.143; our IP address is 10.206.7.133 255 Filename '/sifive/fu540/hifive-unleashed-a00.dtb'. 256 Load address: 0x88000000 257 Loading: ## 258 1000 Bytes/s 259 done 260 Bytes transferred = 5614 (15ee hex) 261 => setenv bootargs "root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi" 262 => booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r} 263 ## Loading init Ramdisk from Legacy Image at 88300000 ... 264 Image Name: Linux RootFS 265 Image Type: RISC-V Linux RAMDisk Image (uncompressed) 266 Data Size: 2398208 Bytes = 2.3 MiB 267 Load Address: 00000000 268 Entry Point: 00000000 269 Verifying Checksum ... OK 270 ## Flattened Device Tree blob at 88000000 271 Booting using the fdt blob at 0x88000000 272 Using Device Tree in place at 0000000088000000, end 00000000880045ed 273 274 Starting kernel ... 275 276 [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 277 [ 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 278 [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') 279 [ 0.000000] printk: bootconsole [sbi0] enabled 280 [ 0.000000] Initial ramdisk at: 0x(____ptrval____) (2398208 bytes) 281 [ 0.000000] Zone ranges: 282 [ 0.000000] DMA32 [mem 0x0000000080200000-0x00000000ffffffff] 283 [ 0.000000] Normal [mem 0x0000000100000000-0x000000027fffffff] 284 [ 0.000000] Movable zone start for each node 285 [ 0.000000] Early memory node ranges 286 [ 0.000000] node 0: [mem 0x0000000080200000-0x000000027fffffff] 287 [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000027fffffff] 288 [ 0.000000] software IO TLB: mapped [mem 0xfbfff000-0xfffff000] (64MB) 289 [ 0.000000] CPU with hartid=0 is not available 290 [ 0.000000] CPU with hartid=0 is not available 291 [ 0.000000] elf_hwcap is 0x112d 292 [ 0.000000] percpu: Embedded 18 pages/cpu s34584 r8192 d30952 u73728 293 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2067975 294 [ 0.000000] Kernel command line: root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi 295 [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) 296 [ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) 297 [ 0.000000] Sorting __ex_table... 298 [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off 299 [ 0.000000] Memory: 8182308K/8386560K available (5916K kernel code, 368K rwdata, 1840K rodata, 213K init, 304K bss, 204252K reserved, 0K cma-reserved) 300 [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 301 [ 0.000000] rcu: Hierarchical RCU implementation. 302 [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4. 303 [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. 304 [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4 305 [ 0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0 306 [ 0.000000] plic: mapped 53 interrupts with 4 handlers for 9 contexts. 307 [ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1] 308 [ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns 309 [ 0.000006] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns 310 [ 0.008559] Console: colour dummy device 80x25 311 [ 0.012989] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000) 312 [ 0.023104] pid_max: default: 32768 minimum: 301 313 [ 0.028273] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) 314 [ 0.035765] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) 315 [ 0.045307] rcu: Hierarchical SRCU implementation. 316 [ 0.049875] smp: Bringing up secondary CPUs ... 317 [ 0.055729] smp: Brought up 1 node, 4 CPUs 318 [ 0.060599] devtmpfs: initialized 319 [ 0.064819] random: get_random_u32 called from bucket_table_alloc.isra.10+0x4e/0x160 with crng_init=0 320 [ 0.073720] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns 321 [ 0.083176] futex hash table entries: 1024 (order: 4, 65536 bytes, linear) 322 [ 0.090721] NET: Registered protocol family 16 323 [ 0.106319] vgaarb: loaded 324 [ 0.108670] SCSI subsystem initialized 325 [ 0.112515] usbcore: registered new interface driver usbfs 326 [ 0.117758] usbcore: registered new interface driver hub 327 [ 0.123167] usbcore: registered new device driver usb 328 [ 0.128905] clocksource: Switched to clocksource riscv_clocksource 329 [ 0.141239] NET: Registered protocol family 2 330 [ 0.145506] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear) 331 [ 0.153754] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear) 332 [ 0.163466] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear) 333 [ 0.173468] TCP: Hash tables configured (established 65536 bind 65536) 334 [ 0.179739] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear) 335 [ 0.186627] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear) 336 [ 0.194117] NET: Registered protocol family 1 337 [ 0.198417] RPC: Registered named UNIX socket transport module. 338 [ 0.203887] RPC: Registered udp transport module. 339 [ 0.208664] RPC: Registered tcp transport module. 340 [ 0.213429] RPC: Registered tcp NFSv4.1 backchannel transport module. 341 [ 0.219944] PCI: CLS 0 bytes, default 64 342 [ 0.224170] Unpacking initramfs... 343 [ 0.262347] Freeing initrd memory: 2336K 344 [ 0.266531] workingset: timestamp_bits=62 max_order=21 bucket_order=0 345 [ 0.280406] NFS: Registering the id_resolver key type 346 [ 0.284798] Key type id_resolver registered 347 [ 0.289048] Key type id_legacy registered 348 [ 0.293114] nfs4filelayout_init: NFSv4 File Layout Driver Registering... 349 [ 0.300262] NET: Registered protocol family 38 350 [ 0.304432] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) 351 [ 0.311862] io scheduler mq-deadline registered 352 [ 0.316461] io scheduler kyber registered 353 [ 0.356421] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled 354 [ 0.363004] 10010000.serial: ttySIF0 at MMIO 0x10010000 (irq = 4, base_baud = 0) is a SiFive UART v0 355 [ 0.371468] printk: console [ttySIF0] enabled 356 [ 0.371468] printk: console [ttySIF0] enabled 357 [ 0.380223] printk: bootconsole [sbi0] disabled 358 [ 0.380223] printk: bootconsole [sbi0] disabled 359 [ 0.389589] 10011000.serial: ttySIF1 at MMIO 0x10011000 (irq = 1, base_baud = 0) is a SiFive UART v0 360 [ 0.398680] [drm] radeon kernel modesetting enabled. 361 [ 0.412395] loop: module loaded 362 [ 0.415214] sifive_spi 10040000.spi: mapped; irq=3, cs=1 363 [ 0.420628] sifive_spi 10050000.spi: mapped; irq=5, cs=1 364 [ 0.425897] libphy: Fixed MDIO Bus: probed 365 [ 0.429964] macb 10090000.ethernet: Registered clk switch 'sifive-gemgxl-mgmt' 366 [ 0.436743] macb: GEM doesn't support hardware ptp. 367 [ 0.441621] libphy: MACB_mii_bus: probed 368 [ 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) 369 [ 0.615857] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 6 (70:b3:d5:92:f2:f3) 370 [ 0.625634] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k 371 [ 0.631381] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. 372 [ 0.637382] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver 373 [ 0.643799] ehci-pci: EHCI PCI platform driver 374 [ 0.648261] ehci-platform: EHCI generic platform driver 375 [ 0.653497] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver 376 [ 0.659599] ohci-pci: OHCI PCI platform driver 377 [ 0.664055] ohci-platform: OHCI generic platform driver 378 [ 0.669448] usbcore: registered new interface driver uas 379 [ 0.674575] usbcore: registered new interface driver usb-storage 380 [ 0.680642] mousedev: PS/2 mouse device common for all mice 381 [ 0.709493] mmc_spi spi1.0: SD/MMC host mmc0, no DMA, no WP, no poweroff, cd polling 382 [ 0.716615] usbcore: registered new interface driver usbhid 383 [ 0.722023] usbhid: USB HID core driver 384 [ 0.726738] NET: Registered protocol family 10 385 [ 0.731359] Segment Routing with IPv6 386 [ 0.734332] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver 387 [ 0.740687] NET: Registered protocol family 17 388 [ 0.744660] Key type dns_resolver registered 389 [ 0.806775] mmc0: host does not support reading read-only switch, assuming write-enable 390 [ 0.814020] mmc0: new SDHC card on SPI 391 [ 0.820137] mmcblk0: mmc0:0000 SU08G 7.40 GiB 392 [ 0.850220] mmcblk0: p1 p2 393 [ 3.821524] macb 10090000.ethernet eth0: link up (1000/Full) 394 [ 3.828938] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready 395 [ 3.848919] Sending DHCP requests .., OK 396 [ 6.252076] IP-Config: Got DHCP answer from 10.206.4.1, my address is 10.206.7.133 397 [ 6.259624] IP-Config: Complete: 398 [ 6.262831] device=eth0, hwaddr=70:b3:d5:92:f2:f3, ipaddr=10.206.7.133, mask=255.255.252.0, gw=10.206.4.1 399 [ 6.272809] host=dhcp-10-206-7-133, domain=sdcorp.global.sandisk.com, nis-domain=(none) 400 [ 6.281228] bootserver=10.206.126.11, rootserver=10.206.126.11, rootpath= 401 [ 6.281232] nameserver0=10.86.1.1, nameserver1=10.86.2.1 402 [ 6.294179] ntpserver0=10.86.1.1, ntpserver1=10.86.2.1 403 [ 6.301026] Freeing unused kernel memory: 212K 404 [ 6.304683] This architecture does not have kernel memory protection. 405 [ 6.311121] Run /init as init process 406 _ _ 407 | ||_| 408 | | _ ____ _ _ _ _ 409 | || | _ \| | | |\ \/ / 410 | || | | | | |_| |/ \ 411 |_||_|_| |_|\____|\_/\_/ 412 413 Busybox Rootfs 414 415 Please press Enter to activate this console. 416 / # 417 418Booting from MMC using U-Boot SPL 419--------------------------------- 420 421Building 422~~~~~~~~ 423 424Before building U-Boot SPL, OpenSBI must be built first. OpenSBI can be 425cloned and built for FU540 as below: 426 427.. code-block:: console 428 429 git clone https://github.com/riscv/opensbi.git 430 cd opensbi 431 make PLATFORM=generic 432 export OPENSBI=<path to opensbi/build/platform/generic/firmware/fw_dynamic.bin> 433 434Now build the U-Boot SPL and U-Boot proper 435 436.. code-block:: console 437 438 cd <U-Boot-dir> 439 make sifive_fu540_defconfig 440 make 441 442This will generate spl/u-boot-spl.bin and FIT image (u-boot.itb) 443 444 445Flashing 446~~~~~~~~ 447 448ZSBL loads the U-Boot SPL (u-boot-spl.bin) from a partition with GUID type 4495B193300-FC78-40CD-8002-E86C45580B47 450 451U-Boot SPL expects a U-Boot FIT image (u-boot.itb) from a partition with GUID 452type 2E54B353-1271-4842-806F-E436D6AF6985 453 454FIT image (u-boot.itb) is a combination of fw_dynamic.bin, u-boot-nodtb.bin and 455device tree blob (hifive-unleashed-a00.dtb) 456 457Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch) 458 459.. code-block:: none 460 461 # sudo sgdisk --clear \ 462 > --set-alignment=2 \ 463 > --new=1:34:2081 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \ 464 > --new=2:2082:10273 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \ 465 > --new=3:10274: --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \ 466 > /dev/sda 467 468Program the SD card 469 470.. code-block:: none 471 472 sudo dd if=spl/u-boot-spl.bin of=/dev/sda seek=34 473 sudo dd if=u-boot.itb of=/dev/sda seek=2082 474 475Booting 476~~~~~~~ 477 478Once you plugin the sdcard and power up, you should see the U-Boot prompt. 479 480Sample boot log from HiFive Unleashed board 481~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 482 483.. code-block:: none 484 485 U-Boot SPL 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) 486 Trying to boot from MMC1 487 488 489 U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) 490 491 CPU: rv64imafdc 492 Model: SiFive HiFive Unleashed A00 493 DRAM: 8 GiB 494 MMC: spi@10050000:mmc@0: 0 495 In: serial@10010000 496 Out: serial@10010000 497 Err: serial@10010000 498 Net: eth0: ethernet@10090000 499 Hit any key to stop autoboot: 0 500 => version 501 U-Boot 2020.04-rc2-00109-g63efc7e07e-dirty (Apr 30 2020 - 13:52:36 +0530) 502 503 riscv64-unknown-linux-gnu-gcc (crosstool-NG 1.24.0.37-3f461da) 9.2.0 504 GNU ld (crosstool-NG 1.24.0.37-3f461da) 2.32 505 => mmc info 506 Device: spi@10050000:mmc@0 507 Manufacturer ID: 3 508 OEM: 5344 509 Name: SC16G 510 Bus Speed: 20000000 511 Mode: SD Legacy 512 Rd Block Len: 512 513 SD version 2.0 514 High Capacity: Yes 515 Capacity: 14.8 GiB 516 Bus Width: 1-bit 517 Erase Group Size: 512 Bytes 518 => mmc part 519 520 Partition Map for MMC device 0 -- Partition Type: EFI 521 522 Part Start LBA End LBA Name 523 Attributes 524 Type GUID 525 Partition GUID 526 1 0x00000022 0x00000821 "loader1" 527 attrs: 0x0000000000000000 528 type: 5b193300-fc78-40cd-8002-e86c45580b47 529 guid: 66e2b5d2-74db-4df8-ad6f-694b3617f87f 530 2 0x00000822 0x00002821 "loader2" 531 attrs: 0x0000000000000000 532 type: 2e54b353-1271-4842-806f-e436d6af6985 533 guid: 8befaeaf-bca0-435d-b002-e201f37c0a2f 534 3 0x00002822 0x01dacbde "rootfs" 535 attrs: 0x0000000000000000 536 type: 0fc63daf-8483-4772-8e79-3d69d8477de4 537 type: linux 538 guid: 9faa81b6-39b1-4418-af5e-89c48f29c20d 539 540Booting from SPI 541---------------- 542 543Use Building steps from "Booting from MMC using U-Boot SPL" section. 544 545Partition the SPI in Linux via mtdblock. (Require to boot the board in 546SD boot mode by enabling MTD block in Linux) 547 548Use prebuilt image from here [1], which support to partition the SPI flash. 549 550.. code-block:: none 551 552 # sgdisk --clear \ 553 > --set-alignment=2 \ 554 > --new=1:40:2087 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \ 555 > --new=2:2088:10279 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \ 556 > --new=3:10536:65494 --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \ 557 > /dev/mtdblock0 558 559Program the SPI (Require to boot the board in SD boot mode) 560 561Execute below steps on U-Boot proper, 562 563.. code-block:: none 564 565 tftpboot $kernel_addr_r u-boot-spl.bin 566 sf erase 0x5000 $filesize 567 sf write $kernel_addr_r 0x5000 $filesize 568 569 tftpboot $kernel_addr_r u-boot.itb 570 sf erase 0x105000 $filesize 571 sf write $kernel_addr_r 0x105000 $filesize 572 573Power off the board 574 575Change DIP switches MSEL[3:0] are set to 0110 576 577Power up the board. 578 579[1] https://github.com/amarula/bsp-sifive 580