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BL808 U-Boot HOWTO
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| git clone https://github.com/smaeul/bouffalo-loader | |
| git clone https://github.com/smaeul/opensbi -b bl808 | |
| git clone https://github.com/smaeul/u-boot -b bl808-2023-01-18 | |
| cd u-boot | |
| make CROSS_COMPILE=riscv64-linux-musl- bl808_d0_defconfig | |
| make CROSS_COMPILE=riscv64-linux-musl- | |
| cd ../opensbi | |
| make CROSS_COMPILE=riscv64-linux-musl- PLATFORM=generic \ | |
| FW_FDT_PATH=../u-boot/arch/riscv/dts/bl808-d0-ox64.dtb \ | |
| FW_PAYLOAD_OFFSET=0x100000 \ | |
| FW_PAYLOAD_PATH=../u-boot/u-boot.bin \ | |
| FW_TEXT_START=0x50000000 | |
| strip --strip-all build/platform/generic/firmware/fw_payload.elf | |
| # copy build/platform/generic/firmware/fw_payload.elf to SD card | |
| cd ../u-boot | |
| make CROSS_COMPILE=riscv32-linux-musl- bl808_m0_defconfig | |
| make CROSS_COMPILE=riscv32-linux-musl- | |
| # Connect /dev/ttyUSB0 to GPIO14/GPIO15. This is your M0 UART, running at 115200 baud. | |
| # Connect /dev/ttyUSB1 to GPIO12/GPIO13. This is your D0 UART, running at 115200 baud. | |
| # Flash the M0 U-Boot using any of the available tools, for example: | |
| bflb-mcu-tool --chipname bl808 --port /dev/ttyUSB0 --baudrate 2000000 --firmware u-boot.bin | |
| # On /dev/ttyUSB0, 115200 baud, you can interact with M0 U-Boot: | |
| U-Boot 2023.01-00244-g1d993ea68a (Jan 15 2023 - 02:47:09 -0600) | |
| DRAM: 512 KiB | |
| Core: 30 devices, 13 uclasses, devicetree: embed | |
| MMC: mmc@20060000: 0 | |
| Loading Environment from <NULL>... OK | |
| => load mmc 0:1 51000000 fw_payload.elf | |
| 564808 bytes read in 2058 ms (267.6 KiB/s) | |
| => rproc init 0 | |
| => rproc load 0 51000000 100000 | |
| Load Remote Processor 0 with data@addr=0x51000000 1048576 bytes: Success! | |
| => rproc start 0 | |
| => | |
| # Note that you still have a shell here, so you can load and run more programs | |
| # (e.g. an IRQ forwarder) or manipulate D0 state. You can reset D0 with: | |
| => rproc stop 0 | |
| => rproc load 0 51000000 100000 | |
| Load Remote Processor 0 with data@addr=0x51000000 1048576 bytes: Success! | |
| => rproc start 0 | |
| # On /dev/ttyUSB1, 115200 baud, you can interact with D0 U-Boot: | |
| # Note: OpenSBI messages will not show up the first time because the pin mux is not set up. | |
| DRAM: 64 MiB | |
| Core: 27 devices, 11 uclasses, devicetree: board | |
| MMC: mmc@20060000: 0 | |
| Loading Environment from nowhere... OK | |
| In: serial@2000a100 | |
| Out: serial@2000a100 | |
| Err: serial@2000a100 | |
| Net: No ethernet found. | |
| Hit any key to stop autoboot: 0 | |
| ## Error: "distro_bootcmd" not defined | |
| => load mmc 0:1 $loadaddr bl808/Image | |
| 13271040 bytes read in 2554 ms (5 MiB/s) | |
| => booti $loadaddr - $fdtcontroladdr | |
| Moving Image from 0x51000000 to 0x50200000, end=50ee8000 | |
| ## Flattened Device Tree blob at 53b6b260 | |
| Booting using the fdt blob at 0x53b6b260 | |
| Working FDT set to 53b6b260 | |
| Loading Device Tree to 0000000052b5a000, end 0000000052b5fb80 ... OK | |
| Working FDT set to 52b5a000 | |
| Starting kernel ... | |
| [ 0.000000] Linux version 6.2.0-rc2-00210-ge1525068345d (samuel@titanium) (riscv64-linux-musl-gcc (GCC) 11.1.0, GNU ld (GNU Binutils) 2.36.1) #2 PREEMPT Sat Jan 14 16:58:42 CST 2023 | |
| [ 0.000000] OF: fdt: Ignoring memory range 0x50000000 - 0x50200000 | |
| [ 0.000000] Machine model: Pine64 Ox64 (D0) | |
| [ 0.000000] efi: UEFI not found. | |
| [ 0.000000] Zone ranges: | |
| [ 0.000000] DMA32 [mem 0x0000000050200000-0x0000000053ffffff] | |
| [ 0.000000] Normal empty | |
| [ 0.000000] Movable zone start for each node | |
| [ 0.000000] Early memory node ranges | |
| [ 0.000000] node 0: [mem 0x0000000050200000-0x0000000053ffffff] | |
| [ 0.000000] Initmem setup node 0 [mem 0x0000000050200000-0x0000000053ffffff] | |
| [ 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] riscv: base ISA extensions acdfim | |
| [ 0.000000] riscv: ELF capabilities acdfim | |
| ... |
Prebuilt binaries are available at:
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Updates for tag bl808-2023-01-18:
u-boot.binwithbflb-mcu-tool --chipname bl808 --port /dev/ttyUSB0 --baudrate 2000000 --firmware u-boot.binor equivalent. You no longer needbouffalo-loader. However, if you want, you can still use it, by disablingCONFIG_XIP.