xv6 MangoPi MQ Test Report

Test Environment

Operating System Information

• Source code link: https://github.com/michaelengel/xv6-d1
• Reference Installation Document: https://github.com/michaelengel/xv6-d1

Hardware Information

• MangoPi MQ
• Power Adapter
• A USB to UART Debugger

Installation Steps

Compile Kernel

Fetch the source code:

dd if=milkv-duo_sdcard.img of=/dev/your/device bs=1M status=progress

Modify Makefile to avoid compilation errors:

diff --git a/Makefile b/Makefile
index 57875f1..bc65d72 100644
--- a/Makefile
+++ b/Makefile
@@ -60,7 +60,7 @@ LD = $(TOOLPREFIX)ld
 OBJCOPY = $(TOOLPREFIX)objcopy
 OBJDUMP = $(TOOLPREFIX)objdump

-CFLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb
+CFLAGS = -Wall -O -fno-omit-frame-pointer -ggdb
 CFLAGS += -MD
 CFLAGS += -mcmodel=medany
 CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax

Compile:

make fs.img
make

Flash the firmware via FEL

Install xfel. e.g. on Arch Linux via AUR: paru -S xfel

Connect to the OTG port on board through USB-C.

Send the payload through xfel:

xfel ddr f133
xfel write 0x40000000 kernel/kernel.bin
xfel exec 0x40000000

Check the serial port for outputs.

The board’s TX and RX pins are pins 7, 8 on connector P3, respectively.

Expected Results

The system boots up normally and allows login through the serial port.

Actual Results

Output is stuck at xv6 kernel is booting.

Boot Log

ZQ value = 0x2f***********
get_pmu_exist() = 4294967295
ddr_efuse_type: 0xb
[AUTO DEBUG] single rank and full DQ!
ddr_efuse_type: 0xb
[AUTO DEBUG] rank 0 row = 13
[AUTO DEBUG] rank 0 bank = 4
[AUTO DEBUG] rank 0 page size = 2 KB
DRAM BOOT DRIVE INFO: %s
DRAM CLK = 528 MHz
DRAM Type = 2 (2:DDR2,3:DDR3)
DRAMC read ODT  off.
DRAM ODT off.
ddr_efuse_type: 0xb
DRAM SIZE =64 M
DRAM simple test OK.

xv6 kernel is booting

Test Criteria

Successful: The actual result matches the expected result.

Failed: The actual result does not match the expected result.

Test Conclusion

Test failed.