Can anyone share their working u-boot configuration for RPi3? With a
working graphics mode and device tree overlay. config.txt boot.scr and
any other config files you might have.
I'm running a normal Raspbian Stretch lite image with stock 32bit kernel.
I compiled u-boot with |rpi_3_32b_defconfig|
/Göran Lundberg
On 2018-03-06 14:42, Göran Lundberg wrote:
I got it autobooting by adding enable_uart=1 to /boot/config.txt
But it seems like a bug that could be fixed, since it was booting, but
only manually.
Anyone got an idea what might cause this?
But the graphics mode is all wrong. The four raspberrys are purple and
the resolution is extremely low.
In u-boot, the graphics is ok in high resolution, but when booting the
kernel it all changes.
I'm guessing it's got something to do with the device tree not loading
properly.
I finally got a serial console working. Here's the output:
U-Boot 2018.03-rc3-00090-g3990c9d627 (Mar 01 2018 - 15:51:26 +0100)
DRAM: 998 MiB
RPI 3 Model B (0xa02082)
MMC: mmc@7e202000: 0, sdhci@7e300000: 1
Loading Environment from FAT... *** Warning - bad CRC, using default
environment
Failed (-5)
In: serial
Out: vidconsole
Err: vidconsole
Net: No ethernet found.
starting USB...
USB0: Core Release: 2.80a
scanning bus 0 for devices... 4 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
915 bytes read in 4 ms (222.7 KiB/s)
## Executing script at 02000000
switch to partitions #0, OK
mmc0 is current device
4579632 bytes read in 198 ms (22.1 MiB/s)
17794 bytes read in 3 ms (5.7 MiB/s)
Kernel image @ 0x1000000 [ 0x000000 - 0x45e130 ]
## Flattened Device Tree blob at 2effb600
Booting using the fdt blob at 0x2effb600
reserving fdt memory region: addr=0 size=1000
Using Device Tree in place at 2effb600, end 2f002b81
Starting kernel ...
Any idea what is wrong here:
Loading Environment from FAT... *** Warning - bad CRC, using default
environment
I don't have an env file on the SD-card. So how can it give a CRC error?
I tried to use saveenv at the u-boot prompt but i got an infinite
repeating error.
fsm 1, hsts 00000001
And this line:
reserving fdt memory region: addr=0 size=1000
Why is addr=0? And size=1000 seems low?
But on the next line the size seems right.
Here's my boot.scr:
setenv fdtfile bcm2710-rpi-3-b.dtb
mmc dev 0
fatload mmc 0:1 ${kernel_addr_r} kernel7.img
fatload mmc 0:1 ${fdt_addr} ${fdtfile}
setenv bootargs earlyprintk console=tty0 root=/dev/mmcblk0p2
rootfstype=ext4 noinitrd rootwait dwc_otg.lpm_enable=0 elevator=deadline
bootz ${kernel_addr_r} - ${fdt_addr}
Any help appreciated!
On 2018-03-02 20:55, Peter Robinson wrote:
On Fri, Mar 2, 2018 at 10:47 AM, Göran Lundberg
<goran@lundberg.email> wrote:
Hi!
I'm trying to boot from u-boot on a Raspberry Pi 3. But for some
reason it
isn't autobooting on the SD-card.
Is it possible to get more debug output on the screen console? I
don't have
a serial console at the moment.
The output on the screen is:
Net: No ehternet found.
starting USB...
USB: Core Release 2.80a
scanning bus 0 for devices... 4 USB Devices found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
U-Boot>
Shouldn't it mention mmc somewhere in the boot message?
The first command I type on the prompt is always failing, it's not
outputting anything. Just a new prompt on the next line. The next
commands i
type in are working. Which seems strange.
I got boot.scr set up right, except graphic settings which are
wrong. It is
booting the kernel when I type 'run bootcmd'. But only after I type in
another command before it.
It seems like it's not detecting the SD-card (mmc0) until I have typed
anything into the prompt.
Do I have to set any other env variable for it to autoboot? I would
have
printed the output of printenv here, but since I don't have a serial
console, retyping everything is very time consuming.
printenv seems to have the right settings. It's basically a full
console
screen of variables. It just doesn't seem to load them until I type in
another command before it.
boot_targets=mmc0 usb0 pxe dhcp
Which seems right to me.
I compiled the latest u-boot from github.
If you need more info please let me know and I'll post it.
Hope that anyone can point me in the right direction here. Would really
appreciate it.
I'm seeing the same issues with 2018.03 rc3.
I'm not sure what the issue is and I've not had time to investigate it
further yet, but if you type "boot" and hit enter it should boot,
sometimes you actually have to type it twice. It will boot but I'm not
sure which bits here have causes this regression.
Peter
On 2018-03-02 20:55, Peter Robinson wrote:
On Fri, Mar 2, 2018 at 10:47 AM, Göran Lundberg
<goran@lundberg.email> wrote:
Hi!
I'm trying to boot from u-boot on a Raspberry Pi 3. But for some
reason it
isn't autobooting on the SD-card.
Is it possible to get more debug output on the screen console? I
don't have
a serial console at the moment.
The output on the screen is:
Net: No ehternet found.
starting USB...
USB: Core Release 2.80a
scanning bus 0 for devices... 4 USB Devices found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
U-Boot>
Shouldn't it mention mmc somewhere in the boot message?
The first command I type on the prompt is always failing, it's not
outputting anything. Just a new prompt on the next line. The next
commands i
type in are working. Which seems strange.
I got boot.scr set up right, except graphic settings which are
wrong. It is
booting the kernel when I type 'run bootcmd'. But only after I type in
another command before it.
It seems like it's not detecting the SD-card (mmc0) until I have typed
anything into the prompt.
Do I have to set any other env variable for it to autoboot? I would
have
printed the output of printenv here, but since I don't have a serial
console, retyping everything is very time consuming.
printenv seems to have the right settings. It's basically a full
console
screen of variables. It just doesn't seem to load them until I type in
another command before it.
boot_targets=mmc0 usb0 pxe dhcp
Which seems right to me.
I compiled the latest u-boot from github.
If you need more info please let me know and I'll post it.
Hope that anyone can point me in the right direction here. Would really
appreciate it.
I'm seeing the same issues with 2018.03 rc3.
I'm not sure what the issue is and I've not had time to investigate it
further yet, but if you type "boot" and hit enter it should boot,
sometimes you actually have to type it twice. It will boot but I'm not
sure which bits here have causes this regression.
Peter
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