example not loading

[andrejro]

I am trying to load it on a Raspberry Pi 2 Model B V1.2, but the boot stops here:

...
MESS:00:00:02.183462:0: brfs: File read: /mfs/sd/bcm2710-rpi-2-b.dtb
MESS:00:00:02.188122:0: Loading 'bcm2710-rpi-2-b.dtb' to 0x100 size 0x6752
MESS:00:00:02.207289:0: brfs: File read: 26450 bytes
MESS:00:00:02.225048:0: brfs: File read: /mfs/sd/overlays/overlay_map.dtb
MESS:00:00:02.310355:0: brfs: File read: 1523 bytes
MESS:00:00:02.317951:0: brfs: File read: /mfs/sd/config.txt
MESS:00:00:02.321910:0: dtparam: uart0=on
MESS:00:00:02.337884:0: brfs: File read: 261 bytes
MESS:00:00:02.344219:0: brfs: File read: /mfs/sd/cmdline.txt
MESS:00:00:02.348209:0: Read command line from file 'cmdline.txt':
MESS:00:00:02.354084:0: 'console=serial0,115200 console=tty1 root=PARTUUID=9fa20ed1-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait'
MESS:00:00:04.055273:0: gpioman: gpioman_get_pin_num: pin EMMC_ENABLE not defined
MESS:00:00:04.109160:0: gpioman: gpioman_get_pin_num: pin WL_ON not defined
MESS:00:00:04.118277:0: brfs: File read: 121 bytes
MESS:00:00:04.225113:0: brfs: File read: /mfs/sd/example-pi-2.bin
MESS:00:00:04.229514:0: Loading 'example-pi-2.bin' to 0x8000 size 0x16e668
MESS:00:00:04.236119:0: Device tree loaded to 0x2eff9400 (size 0x6b92)
MESS:00:00:04.243690:0: uart: Set PL011 baud rate to 103448.300000 Hz
MESS:00:00:04.250074:0: uart: Baud rate change done...
MESS:00:00:04.253504:0: uart: Baud rate change done...
MESS:00:00:04.263739:0: gpioman: gpioman_get_pin_num: pin SDCARD_CONTROL_POWER not defined

[kenbell]

It might be worth trying the minimal config.txt from the repo - looks like this device is trying to load devicetree overlays.

[andrejro]

Actually, the config.txt from the repo has been used, as it is copied by make install.
I installed the RPi microSD image 2021-01-11-raspios-buster-armhf-lite.zip on a microSD and followed the README.md.
The following is the output of make install.

arm-none-eabi-objdump -D example-pi-2 > example-pi-2.list
arm-none-eabi-objcopy -j .text -j .rodata -j .shstrtab -j .typelink \
    -j .itablink -j .gopclntab -j .go.buildinfo -j .noptrdata -j .data \
    -j .bss --set-section-flags .bss=alloc,load,contents \
    -j .noptrbss --set-section-flags .noptrbss=alloc,load,contents\
    example-pi-2 -O binary example-pi-2.o
arm-none-eabi-gcc -D ENTRY_POINT=`arm-none-eabi-readelf -e example-pi-2 | grep Entry | sed 's/.*\(0x[a-zA-Z0-9]*\).*/\1/'` -c boot.S -o boot.o
arm-none-eabi-objcopy boot.o -O binary stub.o
# Truncate pads the stub out to correctly align the binary
# 32768 = 0x10000 (TEXT_START) - 0x8000 (Default kernel load address)
truncate -s 32768 stub.o
cat stub.o example-pi-2.o > example-pi-2.bin
cp example-pi-2.bin /media/usb/example-pi-2.bin
cp config.txt /media/usb/config.txt