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jyoung
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Joined: 20 Mar 2007
Posts: 440
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 Posted: Wed Nov 16, 2022 12:56 am Post subject: |
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I tried using this boot.cmd
| Code: | setenv bootargs console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootwait panic=10
fatload mmc 0 40008000 uImage
bootm 40008000 |
I've omitted the initrd, since I don't have one, and the line with sun7i-a20-bananapi.dtb.uimg, since I was unsure about that. When I try to boot, it seems to get a bit further, but then reports
| Code: | EHCI failed to shut down host controller.
Loading Kernel Image
FDT and ATAGS support not compiled in
resetting... |
The FDT message seems related to sun7i-a20-bananapi.dtb.uimg, but I'm not sure about the ATAGS. In the uboot .config file I find
| Code: | | # CONFIG_SUPPORT_PASSING_ATAGS is not set |
So, perhaps rebuilding uboot with this enabled might solve this problem. I'm still looking for a way to generate sun7i-a20-bananapi.dtb.uimg. I think you're right, mkimage is probably the way to do it, but when I list all the image types that mkimage can generate, there isn't a clear fit
| Code: |
mkimage -T list
Invalid image type, supported are:
aisimage Davinci AIS image
atmelimage ATMEL ROM-Boot Image
copro Coprocessor Image
filesystem Filesystem Image
firmware Firmware
firmware_ivt Firmware with HABv4 IVT
flat_dt Flat Device Tree
fpga FPGA Image
gpimage TI Keystone SPL Image
imx8image NXP i.MX8 Boot Image
imx8mimage NXP i.MX8M Boot Image
imximage Freescale i.MX Boot Image
invalid Invalid Image
kernel Kernel Image
kernel_noload Kernel Image (no loading done)
kwbimage Kirkwood Boot Image
lpc32xximage LPC32XX Boot Image
mtk_image MediaTek BootROM loadable Image
multi Multi-File Image
mxsimage Freescale MXS Boot Image
omapimage TI OMAP SPL With GP CH
pblimage Freescale PBL Boot Image
pmmc TI Power Management Micro-Controller Firmware
ramdisk RAMDisk Image
rkimage Rockchip Boot Image
rksd Rockchip SD Boot Image
rkspi Rockchip SPI Boot Image
script Script
socfpgaimage Altera SoCFPGA CV/AV preloader
socfpgaimage_v1 Altera SoCFPGA A10 preloader
standalone Standalone Program
stm32image STMicroelectronics STM32 Image
sunxi_egon Allwinner eGON Boot Image
sunxi_toc0 Allwinner TOC0 Boot Image
tee Trusted Execution Environment Image
ublimage Davinci UBL image
vybridimage Vybrid Boot Image
x86_setup x86 setup.bin
zynqimage Xilinx Zynq Boot Image
zynqmpbif Xilinx ZynqMP Boot Image (bif)
zynqmpimage Xilinx ZynqMP Boot Image
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Wed Nov 16, 2022 1:11 am Post subject: |
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| Interesting, I just recompiled uboot with CONFIG_SUPPORT_PASSING_ATAGS=y, and now it's able to get as far as "Starting kernel ...". But, it hangs there. |
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jyoung
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Posts: 440
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| Posted: Wed Nov 16, 2022 4:29 pm Post subject: |
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| I just tried booting with the new uboot but with the old (working) kernel. The result is the same, "Staring kernel..." and then hangs. I think that this suggests that the issue is with uboot or the uboot configuration, and not with the kernel. |
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Wed Nov 16, 2022 5:09 pm Post subject: |
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I found a file called u-boot-dtb.img in the github folder, which sounds like it might be what we need. I tried again with a boot.cmd file that looks like
| Code: | setenv bootargs console=ttyS0,115200 console=tty2 root=/dev/mmcblk0p2 rootwait panic=10
fatload mmc 0 40008000 uImage
fatload mmc 0 4a000000 u-boot-dtb.img
bootm 40008000 - 4a000000 |
Note the - for the address of the initrd. The example from a few posts back had that line as
| Code: | | bootm ${kernel_addr_r} [$ramdisk_addr_r}|-] [${fdt_addr_r}] |
I didn't notice this before, but it looks like the address of the initrd is optional, but the fdt file is not. After generating a new boot.scr file, I now get a message
| Code: | ERROR: uImage is not a fdt - must RESET the board to recover.
EHCI failed to shut down host controller.
Loading Kernel Image
Staring kernel ... |
Okay, it looks like u-boot-dtb.img may not have been the right choice. But the message also calls it a uImage, weirdly implying that it's trying to load it as a kernel. |
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pingtoo
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Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Wed Nov 16, 2022 8:52 pm Post subject: |
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Found a better source https://linux-sunxi.org/Manual_build_howto
Summary of what I learn from above and I think it will apply for your case, (this is about mainline Linux, no info for U-Boot)
Command to use for building mainline linux for Banana Pi (sunxi-a20)
- kernel manual config:
- make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
- Kernel:
- ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make -j4 zImage
- Modules:
- ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make -j4 modules
ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make modules_install
- DTB:
- ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make -j4 dtbs
in linux build dir/arch/arm/boot/dts/
filename: sun7i-a20-bananapi.dtb
- boot.scr
- mkimage -C none -A arm -T script -d boot.cmd boot.scr
- boot.cmd for mainline kernel
| Code: | setenv bootargs console=ttyS0,115200n8 console=tty1 root=/dev/mmcblk0p2 rootwait panic=10
fatload mmc 0:1 0x49000000 sun7i-a20-bananapi.dtb
fatload mmc 0:1 0x46000000 zImage
bootz 0x46000000 - 0x49000000 |
extlinux.conf | Code: | TIMEOUT 3
DEFAULT default
MENU TITLE Boot menu
LABEL default
MENU LABEL Default
LINUX /zImage
FDT /sun7i-a20-bananapi.dtb
APPEND root=/dev/mmcblk0p2 rootwait console=ttyS0,115200n8 console=tty1 panic=10
LABEL exit (leave extlinux(pxe) mode and drop to use boot.scr
MENU LABEL Local boot script (boot.scr)
LOCALBOOT 1 |
- You can drop the "ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-" from command line if you are building inside BananaPi.
- root=dev/mmcblk0p2, if your rootfs is somewhere else please change accordingly.
- I have not yet figure out what is the error "EHCI failed to shut down host controller."
- .dtb file can be placed directly, it have same header as uImage so it can be use where it is expected.
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Wed Nov 16, 2022 10:38 pm Post subject: |
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Okay, what about the load address for sun7i-a20-bananapi-m1-plus.dtb? In this example, it's different from the address for uImage. Running
| Code: | | mkimage -l sun7i-a20-bananapi-m1-plus.dtb |
just returns
| Code: | Image contains unit addresses @, this will break signing
FIT description: unavailable
Created: unavailable
Can't find images parent node '/images' (FDT_ERR_NOTFOUND) |
It's a binary, so opening it in a text editor doesn't reveal the address. As a guess, I tried 0x49000000. Here's the boot.cmd file
| Code: | setenv bootargs console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootwait panic=10
fatload mmc 0:1 0x49000000 sun7i-a20-bananapi-m1-plus.dtb
fatload mmc 0:1 0x40008000 uImage
bootm 0x40008000 - 0x49000000 |
Now, the boot sequence seems to go a bit further. I get
| Code: | ## Flattened Device Tree blot at 49000000
Booting using the fdt blob at 0x49000000
EHCI failed to shut down host controller.
Loading Kernel Image
Loading Device Tree to 49ff6000, end 49fff684 ... OK
Starting kernel .... |
And then it hangs. |
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Wed Nov 16, 2022 10:44 pm Post subject: |
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Wait, that setup was still using the old (working) kernel. I just tried swapping in the new kernel, and it booted! I am logged in now, and uname -a confirms that it's running the new kernel.
Do we know if 0x49000000 is universally correct for any *.dtb, or was it just a lucky guess that because it worked for sun7i-a20-bananapi.dtb it would also work for sun7i-a20-bananapi-m1-plus.dtb?
Also, I'm not sure what the forum etiquette is, but I think we should change the thread's title. The bug that originally prompted it was a failure to connect to the network (which is now working!), but the solution was almost entirely to do with the boot loader. |
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pingtoo
l33t
Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Wed Nov 16, 2022 10:50 pm Post subject: |
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Why sun7i-a20-bananapi-m1-plus.dtb?
I think it should be sun7i-a20-bananapi.dtb.
Do you also have the usb-uart hookup? Some message will only display on serial port, so may be there are more there.
try add setenv bootm_boot_mode=sec into boot.cmd or rebuild u-boot with CONFIG_ARMV7_LPAE=n (search for "Use LPAE page table format" in menuconfig) |
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pingtoo
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Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Wed Nov 16, 2022 10:53 pm Post subject: |
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OK, since it is working you can ignore my previous post, they are target for old sunxi kernel.
If you are satisfy current situation, just modify title and add [solved] to title, |
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pingtoo
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Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Wed Nov 16, 2022 10:56 pm Post subject: |
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[quote="jyoung"]Do we know if 0x49000000 is universally correct for any *.dtb, or was it just a lucky guess that because it worked for sun7i-a20-bananapi.dtb it would also work for sun7i-a20-bananapi-m1-plus.dtb?]/quote]
0x49000000 I guest it just an address far enough so the kernel will not overlap especially for zImage, |
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Wed Nov 16, 2022 11:49 pm Post subject: |
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| I have the USB UART adapter, but I haven't tried it out yet since the new uboot was able to display. Is there a good wiki or tutorial on how to use it? From what I'm seeing, the procedure would be to connect the adapter to the appropriate pins (excluding the 5V pin), start minicom on my desktop, and then boot up the BPI, yes? |
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pingtoo
l33t
Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Thu Nov 17, 2022 1:13 pm Post subject: |
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| jyoung wrote: | | I have the USB UART adapter, but I haven't tried it out yet since the new uboot was able to display. Is there a good wiki or tutorial on how to use it? From what I'm seeing, the procedure would be to connect the adapter to the appropriate pins (excluding the 5V pin), start minicom on my desktop, and then boot up the BPI, yes? |
You can follow https://bananapi.gitbook.io/bpi-m1/en/bpi-m1uartinterface |
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Fri Nov 18, 2022 6:54 pm Post subject: |
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If I'm reading this tutorial right minicom has to be started on the BPI, yes? But, we're looking for messages at boot time, correct? Would the boot loader broadcast through the serial port before minicom is started? Sorry for the confusion, I've never used these tools before.
Also, as of now there are no longer any signs that anything is wrong with the system. It is kind of weird that the old kernel won't load with the new boot loader. On the other hand, it is really old, and I'm not sure that we need to trouble shoot it. |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54244
Location: 56N 3W
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| Posted: Fri Nov 18, 2022 9:39 pm Post subject: |
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jyoung,
If the kernel has serial port support, you need to tell it to put the console on whatever it calls the serial port.
It can go onto the normal HDMI console too.
I use | Code: | | console=tty0 console=ttyS0,115200n8 console=ttyAMA0,115200n8 |
on the kernel command line.
console=tty0 is the normal console.
console=ttyS0,115200n8 console=ttyAMA0,115200n8 is the serial port to use, here there are two as the nane changes from ttyS0 to ttyAMA0. the 115200n8 is the serial part setup.
That much gets you kernel messages on the serial port but not a login prompt.
For a login prompt /etc/inittab needs
| Code: | # SERIAL CONSOLES
s0:12345:respawn:/sbin/agetty -L 115200 ttyAMA0 vt100 |
see the comments in the file.
115200n8 in 115200 baud. No stop bit and 8 data bits.
minicom needs to be set up to match, or you wont lie what you see, if you see anything :)
Play with minicom and the USB/Serial port before you try to talk to anything else.
Connect The Tx and RX wires on the adaptor together. This is called a loopback test.
What you type into minicom will go out of the Tx wire and back in the RX wire and appear in minicom as an 'echo'
If you get two copies, you probably have 'local echo' in minicom set to on. Turn that off.
The BPI will echo everything you send it when all is well.
If you separate the Tx and Rx wires your typing will not be echoed.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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pingtoo
l33t
Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Fri Nov 18, 2022 10:04 pm Post subject: |
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| jyoung wrote: | If I'm reading this tutorial right minicom has to be started on the BPI, yes? But, we're looking for messages at boot time, correct? Would the boot loader broadcast through the serial port before minicom is started? Sorry for the confusion, I've never used these tools before.
Also, as of now there are no longer any signs that anything is wrong with the system. It is kind of weird that the old kernel won't load with the new boot loader. On the other hand, it is really old, and I'm not sure that we need to trouble shoot it. |
minicom is to run on you other computer where usb end is connected, not on BPI
if you really want to use the old kernel, you can see the other post that I asked you to put in the bootm_boot_mode=sec in boot.cmd.
I think by default serial port does not have tty listen for incoming, so once past u-boot and kernel boot up into multi-user mode, you will find that minicom stop working. So please follow Neddy advise setup /etc/inittab to have agetty listen on the serial device. As for the kernel command line, it is optional, if you don't setup as suggested, then you will not see linux kernel messages on serial console until the agetty running. |
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jyoung
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Joined: 20 Mar 2007
Posts: 440
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| Posted: Sun Jan 01, 2023 6:38 pm Post subject: |
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Hi Folks,
Sorry I dropped this thread. I got busy with work, and I've been meaning to revisit. Since it's basically dead, I'll post a summary here for future readers and mark it as SOLVED. pingtoo, I'm extremely grateful for all your dedicated help!
These are the steps that succeeded for this project:
clone https://github.com/andy-shev/u-boot
run make
copy ./arch/arm/dts/sun7i-a20-bananapi-m1-plus.dtb to the boot partition
write the binary to the u-boot-sunxi-with-spl.bin bootable drive | Code: | | dd if=u-boot-sunxi-with-spl.bin of=/dev/mmcblk0 bs=1024 seek=8 |
sun7i-a20-bananapi-m1-plus.dtb to the boot partition
on the boot partition, write a boot.cmd configuration file, here's mine
| Code: | setenv bootargs console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootwait panic=10
fatload mmc 0:1 0x49000000 sun7i-a20-bananapi-m1-plus.dtb
fatload mmc 0:1 0x40008000 uImage
bootm 0x40008000 - 0x49000000 |
generate a bootmkimage -C none -A arm -T script -d boot.cmd boot.scr |
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Gentoo on ARM
