Uboot 命令TFTP下载RT-Smart系统镜像并烧写到emmc
Uboot 命令TFTP 下载RT-Smart系统镜像并烧写到emmc上回说到Windows下通过 UbootTFTP 方式下载和启动rt-smart 内核， 其实只是通过TFTP下载rt-smart 内核到内存，启动开发板，并不是下载到emmc(ROM),怎么烧写emmc呢？ 下面讲解
准备
[*] 设置TFTP服务
[*] 设置开板板IP
[*] 设置服务器TFTP
请到上回Windows下通过 UbootTFTP 方式下载和启动rt-smart 内核
下载系统镜像
=> tftp emmc.img
Using ethernet@02188000 device
TFTP from server 192.168.0.26; our IP address is 192.168.0.100
Filename 'emmc.img'.
Load address: 0x80800000
Loading: #################################################################
#################################################################
.......
####################
1.6 MiB/s
done
Bytes transferred = 69207040 (4200400 hex)
提示下载启始地址0x80800000，大小69207040Bytes ／512Bytes/blk = 135170 转换为16进制 0x21002
写入emmmc
按上面计算写emmc命令为mmc write 0x80800000 0 21002
=> mmc write 0x80800000 0 21002
MMC write: dev # 1, block # 0, count 135170 ... 135170 blocks written: OK
注：从内存地址0x80800000开始 写到emmc０blk开始写 135170(x21002) blks(块）
这时看uboot环境还是之前的，这内存的，boo可以直接启动
设置uboot环境变量并保存：
第二次不了，环境变量，是新系统镜像的，所以要重新设置一下setenv bootcmd "fatload mmc 1:1 0x80001000 /kernel/rtthread.bin; dcache flush; go 0x80001000"
saveenv
RT-Smart系统命令：
boot
执行结果:
=> setenv bootcmd "fatload mmc 1:1 0x80001000 /kernel/rtthread.bin; dcache flush; go 0x80001000"
=> saveenv
Saving Environment to MMC...
Writing to MMC(1)... done
=> boot
reading /kernel/rtthread.bin
1182208 bytes read in 52 ms (21.7 MiB/s)
## Starting application at 0x80001000 ...
\ | /
- RT - Thread Smart Operating System
/ | \ 5.0.0 build Dec 23 2021
2006 - 2020 Copyright by rt-thread team
lwIP-2.1.2 initialized!
E/drv.enet: emac device init success
I/I2C: I2C bus registered
I/I2C: I2C bus registered
E/drv.enet:
PHY Link down, please check the cable connection and link partner setting.
I/SDIO: emmc card capacity 3817472 KB.
found part, begin: 2098176, size: 128.0MB
found part, begin: 136315904, size: 128.0MB
I/touch: rt_touch init success
I/gt911: touch device gt911 init success
I/sal.skt: Socket Abstraction Layer initialize success.
emmc file system initialization done!
Dir / sd0 mount failed!
E/: The wifi Stage 1 status 0 0 0 1
I/WLAN.dev: wlan init success
I/WLAN.lwip: eth device init ok name:w0
I/WLAN.dev: wlan init success
I/WLAN.lwip: eth device init ok name:w1
rw007sn:
rw007 ver:
D/drv.enet: enet1 link up
W/WLAN.mgnt: F:rt_wlan_connect L:1091 not find ap! ssid:rt-thread
hello rt-smart!
/sd/wifi.sh wi-fi configuration file not exist in sd card!
I/mcf.link.tcp: TCPServer Waiting for client on port 5555...
I/mcf.link: MCF link port(3) register successfully.
msh /> I/mcf.trans: MCF(V0.1.0) initialized successfully.
I/urpc: uRPC(V0.1.0) initialize successfully.
I/mcf.trans: MCF protocol started successfully.
内核成功启动，试试命令
msh />
msh />ls
Directory /:
kernel <DIR>
root <DIR>
sd <DIR>
msh />
RT-Thread shell commands:
reboot - reboot system
cpu_usage - display cpu usage
dbg - dbg
memcheck - check memory data
memtrace - dump memory trace information
gic_dump - show gic status
list_page - show page info
list_fd - list file descriptor
lsof - list open files
mount - mount<device><mountpoint><fstype>
unmount - unmount the mountpoint
hello - say hello world
clear - clear the terminal screen
version - show RT-Thread version information
list_thread - list thread
list_sem - list semaphore in system
list_event - list event in system
list_mutex - list mutex in system
list_mailbox - list mail box in system
list_msgqueue - list message queue in system
list_memheap - list memory heap in system
list_mempool - list memory pool in system
list_timer - list timer in system
list_device - list device in system
list - list all symbol in system
help - RT-Thread shell help.
ps - List threads in the system.
free - Show the memory usage in the system.
ls - List information about the FILEs.
cp - Copy SOURCE to DEST.
mv - Rename SOURCE to DEST.
cat - Concatenate FILE(s)
rm - Remove(unlink) the FILE(s).
cd - Change the shell working directory.
pwd - Print the name of the current working directory.
mkdir - Create the DIRECTORY.
mkfs - format disk with file system
df - disk free
echo - echo string to file
set - set or show environment variable
list_channel - list IPC channel information
list_process - list process
kill - send a signal to a process
killall - kill processes by name
list_shm - show share memory info
sys_log - sys_log 1(enable)/0(disable)
ifconfig - list the information of all network interfaces
ping - ping network host
dns - list and set the information of dns
netstat - list the information of TCP / IP
pwm_enable - pwm_enable pwm1 1
pwm_disable - pwm_disable pwm1 1
pwm_set - pwm_set pwm1 1 100 50
date - get date and time or set
wifi - wifi command.
msh />
nice成功了
设置uboot启动延时
setenv bootdelay 0 本帖最后由 fannifu 于 2022-5-12 23:45 编辑
dhcp 下截 emmc.img 烧录
dhcp 0x80800000 192.168.0.38:emmc.img 烧录
mmc write 0x80800000 0 41AA 烧写uboot
mmc write 0x80800000 1 3fe
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