hi，predecessor
I can brush the machine now, but I can’t enter the u-boot before because I failed to brush the machine, but I still can’t enter this time, a predecessor said that the serial port problem, but my serial port is good, there is no problem, if there is a problem, I can not see the log, and I can enter the u-boot by pressing the Enter key before. There is a saying on the Internet is flow control, but you see my serial port configuration is None, or can not receive any information about the keyboard, I am stuck here for a long time
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我现在可以刷机了，但是我进入不了u-boot之前不能进入是因为刷机失败，但是我这次还是进入不了，之前有个前辈说是串口问题，但是我这个串口是好的，没有问题的，要是有问题就看不到日志了，而且之前我按住回车键是可以进入u-boot的，网上有说法是流控制，但是你看我串口配置都None了，还是接收不到任何关于键盘的信息，我卡在这边很久了
U-Boot 2020.04 (Jul 08 2023 - 07:00:08 +0800)
SoC: tegra210
Model: NVIDIA Jetson Nano Developer Kit
Board: NVIDIA P3450-0000
DRAM: 4 GiB
MMC: sdhci@700b0000: 1, sdhci@700b0600: 0
Loading Environment from SPI Flash... SF: Detected mx25u3235f with page size 256 Bytes, erase size 4 KiB, total 4 MiB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: No ethernet found.
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
845 bytes read in 31 ms (26.4 KiB/s)
1: primary kernel
Retrieving file: /boot/initrd
7160134 bytes read in 328 ms (20.8 MiB/s)
Retrieving file: /boot/Image
34564104 bytes read in 1516 ms (21.7 MiB/s)
append: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 console=ttyS0,115200n8 debug_uartport=lsport,4 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=0x1000@0xff780000 core_edp_mv=1075 core_edp_ma=4000 gpt earlycon=uart8250,mmio32,0x70006000 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
## Flattened Device Tree blob at 83100000
Booting using the fdt blob at 0x83100000
ERROR: reserving fdt memory region failed (addr=0 size=0)
ERROR: reserving fdt memory region failed (addr=0 size=0)
Using Device Tree in place at 0000000083100000, end 000000008317cef3
copying carveout for /host1x@50000000/dc@54200000...
copying carveout for /host1x@50000000/dc@54240000...
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.9.299-tegra (zzy@Ubuntu22) (gcc version 7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] (Linaro GCC 7.3-2018.05) ) #1 SMP PREEMPT Wed Jul 5 20:59:17 CST 2023
[ 0.000000] Boot CPU: AArch64 Processor [411fd071]
[ 0.000000] OF: fdt:memory scan node memory@80000000, reg size 32,
[ 0.000000] OF: fdt: - 80000000 , 7ee00000
[ 0.000000] OF: fdt: - 100000000 , 7f200000
[ 0.000000] earlycon: uart8250 at MMIO32 0x0000000070006000 (options '')
[ 0.000000] bootconsole [uart8250] enabled
[ 1.074957] tegradc tegradc.1: dpd enable lookup fail:-19
[ 1.580699] Host read timeout at address 545c00c4
[ 1.850702] imx219 8-0010: imx219_board_setup: error during i2c read probe (-121)
[ 1.858339] imx219 8-0010: board setup failed
[ 3.188409] cgroup: cgroup2: unknown option "nsdelegate"
[ 4.700509] using random self ethernet address
[ 4.705190] using random host ethernet address
[ 4.770032] random: crng init done
[ 4.773435] random: 7 urandom warning(s) missed due to ratelimiting
[ 4.998087] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8265-26.ucode failed with error -2
[ 5.007775] iwlwifi 0000:01:00.0: Falling back to user helper
[ 5.598529] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8265-25.ucode failed with error -2
[ 5.609883] iwlwifi 0000:01:00.0: Falling back to user helper
[ 5.623616] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8265-24.ucode failed with error -2
[ 5.633002] iwlwifi 0000:01:00.0: Falling back to user helper
[ 5.639886] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8265-23.ucode failed with error -2
[ 5.649331] iwlwifi 0000:01:00.0: Falling back to user helper
[ 5.729936] using random self ethernet address
[ 5.734469] using random host ethernet address
[ 5.963353] thermal thermal_zone6: failed to read out thermal zone (-5)
[ 11.429527] Bridge firewalling registered
Ubuntu 18.04.6 LTS ubuntu ttyS0
ubuntu login:
