[help]: how to boot opensbi with test payload on CanMV-k230 board

[yf13]

Help

how can we boot opensbi with its test payload on CanMV-k230 device?

Here I can build out fw_payload.elf following little core opensbi make methods, but I don't know how to run it from within K230 u-boot console, can you please teach?

[LearnigF]

I think the jtag debugger would be a good solution to your problem

[wangjianxin-canaan]

你在uboot下 试下 boot_baremetal 命令 可以先把fw_payload.elf文件下载到内容，然后执行下类似下面命令 boot_baremetal 0 0x$fileaddr 0x$filesize；boot_baremetal 命令的详细使用方法如下

boot_baremetal boot_baremetal cpu addr size

[yf13]

@wangjianxin-canaan thanks a lot. @LearnigF CanMV device doesn't support JTAG debugger. :(

[wangjianxin-canaan]

canMV device doesn't support JTAG debugger.

canmv default disable jtag by u-boot, you can enable jtag debuger ,and enable jtag debugger way is modify src/little/uboot/arch/riscv/dts/k230_canmv.dts file :

0001-enable-jtag.patch

[yf13]

@wangjianxin-canaan which pins on CanMV230 can be used for jtag?

[wangjianxin-canaan]

@wangjianxin-canaan which pins on CanMV230 can be used for jtag?

uboot default disable cklink jtag,you can enable cklink jtag by modify follow code:

    #src/little/uboot/arch/riscv/dts/k230_canmv.dts gpio5 and gipi6 modify
    (IO5 ) ( 1<<SEL | 0<<SL | BANK_VOLTAGE_IO2_IO13 <<MSC | 1<<IE | 0<<OE | 0<<PU | 0<<PD | 4<<DS | 0<<ST )
    (IO6 ) ( 1<<SEL | 0<<SL | BANK_VOLTAGE_IO2_IO13 <<MSC | 1<<IE | 0<<OE | 1<<PU | 0<<PD | 4<<DS | 0<<ST )

[LearnigF]

In fact I wonder why you don't want to use the uboot command to start opensbi。Without uboot, it means that ddr training can't be done and your code can only run on sram

[yf13]

@wangjianxin-canaan thank you!

I understand that with the patched u-boot, we can connect CKLINK to pins IO5 and IO6 on CanMV-K230 for JTAG debugging.