电缆调制解调器 SPI Flash 存储器具有以下结构：
7 cmdlinepart partitions found on MTD device spansion
partitions[0] = {.name = U-Boot, .offset = 0x00000000,.size = 0x00020000 (128K) }
partitions[1] = {.name = env1, .offset = 0x00020000,.size = 0x00010000 (64K) }
partitions[2] = {.name = env2, .offset = 0x00030000,.size = 0x00010000 (64K) }
partitions[3] = {.name = firmware_101222c, .offset = 0x004a0000,.size = 0x002d0000 (2880K) }
partitions[4] = {.name = nvram, .offset = 0x007b0000,.size = 0x00050000 (320K) }
partitions[5] = {.name = UBFI1, .offset = 0x00040000,.size = 0x003b0000 (3776K) }
partitions[6] = {.name = UBFI2, .offset = 0x003f0000,.size = 0x003b0000 (3776K) }
Creating 7 MTD partitions on "spansion":
0x00000000-0x00020000 : "U-Boot"
0x00020000-0x00030000 : "env1"
0x00030000-0x00040000 : "env2"
0x004a0000-0x00770000 : "firmware_101222c"
0x007b0000-0x00800000 : "nvram"
0x00040000-0x003f0000 : "UBFI1"
0x003f0000-0x007a0000 : "UBFI2"
引导加载程序正在工作，我可以通过串行接口连接到调制解调器，控制引导过程并上传固件。我无法通过 ip 192.168.100.1 连接管理界面，可能是由于 nvram 中存储的配置错误。我可以只擦除 Nvram 而不触及其他分区吗？
? - alias for 'help'
autoscr - run script from memory
base - print or set address offset
bdinfo - print Board Info structure
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootm - boot application image from memory
bootp - boot image via network using BootP/TFTP protocol
cmp - memory compare
coninfo - print console devices and information
cp - memory copy
crc32 - checksum calculation
echo - echo args to console
erase - erase FLASH memory
eval - return addition/subraction
exit - exit script
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
iminfo - print header information for application image
imls - list all images found in flash
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
md - memory display
mm - memory modify (auto-incrementing)
mtest - simple RAM test
mw - memory write (fill)
nm - memory modify (constant address)
printenv- print environment variables
protect - enable or disable FLASH write protection
rarpboot- boot image via network using RARP/TFTP protocol
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv - set environment variables
sleep - delay execution for some time
test - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
version - print monitor version