Hi, I just got a HiFive Premier P550 board. It booted fine into the Ubuntu login screen. I didn’t know the password. I tried blank, “ubuntu”, “sifive”, nothing worked. I figured I could reset the password via the Ubuntu Recovery Mode from GRUB. Unfortunately my USB keyboard wouldn’t work with GRUB (perhaps grub is missing USB 3 support?).
So I figured I should just update the whole thing.
I got the serial console connected. I could type but not see anything. I had to see what I was typing by using the HDMI output to a monitor.
I downloaded the latest release copy of bootloader_ddr5_secboot.bin from https://github.com/sifiveinc/freedom-u-sdk/releases/ (043a47a2516ea0cd1314c7d0f0788b8e86837db9335cd570addb2e27b1398250). I downloaded ubuntu-24.04-preinstalled-server-riscv64.img.xz and decompressed it (05ac95ac214292d3db8d406fa9a22e1b400765b32957ee8095290eacc6a795e5 after decompression), storing both on an EXT4 USB stick.
Using the guide at https://www.sifive.com/document-file/hifive-premier-p550-image-update-procedure I was able to run
ext4load usb 0 0x90000000 bootloader_ddr5_secboot.bin
es_burn write 0x90000000 flash
es_fs write usb 0 ubuntu-24.04-preinstalled-server-riscv64.img mmc 0
The output of these commands looked correct and roughly matched whats in the guide.
After resetting the device, I now get serial terminal output but no HDMI output, and the machine doesn’t appear to boot. This is what I see from the serial terminal on reset:
pll config ok
die_num:0,die_ordinal:0
Firmware version:1.5;disable ECC
PHY0 training process:100%
PHY1 training process:100%
DDR type:LPDDR5;Size:32GB,Data Rate:6400MT/s
DDR self test OK
LPCPU Load FW Start
LPCPU Reset
LPCPU Release
LPCPU Notify
lmbox lpcpu <- u84: 0x0000000000000000 (wdt_handle_disable) (GENERIC_NOTIFY)
LPCPU Firmware Version: 2.34
I don’t know what to do from here. I have no HDMI video out and the terminal doesn’t seem to respond to anything typed in it.