Estou tentando fazer com que um novo kernel Linux inicialize em um dispositivo Linux PPC usando o U-Boot, mas ele não inicializa o kernel.
Minha imagem de kernel inicializável é construída e está sendo inicializada pela rede pelo U-Boot. O problema é que, depois de descompactar o kernel, nada acontece. Eu não consigo descobrir o que está acontecendo - foi sugerido para mim que o kernel descompactado está sendo escrito sobre a imagem do kernel inicializável, corrompendo assim o kernel descompactado, mas eu não sei como encontrar onde na memória isso é tudo acontecendo. Aqui está a saída do U-Boot:
Booting kernel from Legacy Image at 00800000
Image Name: Linux-4.9.48
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 3098594 Bytes = 3 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Após este ponto, não faz nada.
Alguém tem alguma outra ideia de por que isso está acontecendo, ou sabe onde encontrar um mapa de memória do uBoot? Obrigado antecipadamente!
Edit: Publicação de saída de printenv mais saída de inicialização completa
ramboot=run ramargs addmtd addother;tftp $ramdiskaddr $ramdiskfile;tftp
$loadaddr $bootfile;bootm $loadaddr $ramdiskaddr
nfsboot=run nfsargs addmtd addip addother;tftp $loadaddr $bootfile; bootm
$loadaddr
bootdelay=2
baudrate=115200
loads_echo=1
netmask=255.255.0.0
hostname=Paradigm_
loadaddr=800000
addip=setenv bootargs $bootargs
ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname:$netdev:off
addmtd=setenv bootargs $bootargs mtdparts=$mtd_id:$mtdkernel,$mtdrootfs,$mtduboot,$mtdfuturea,$mtdfutureb,$mtdunu
sed,$mtdenvars
addother=setenv bootargs $bootargs console=$consoledev,$baudrate
$othbootargs contrast=$contrast
consoledev=ttyS3
fargs=setenv bootargs root=/dev/ram rw
fboot=run fargs addmtd addip addother; bootm $kernel_base $fs_base
flkernel=echo ************************;echo * Starting flkernel... *;echo
************************;prot off $kernel_base $kernel_end;erase
$kernel_base $kernel_end;tftp $loadaddr $bootfile;cp.b $loadaddr
$kernel_base $filesize;prot on $kernel_base $kernel_end;cmp.b $loadaddr
$kernel_base $filesize;echo *********************;echo * flkernel Complete
*;echo *********************
flrootfs=echo ************************;echo * Starting flrootfs... *;echo
************************;prot off $fs_base $fs_end;erase $fs_base
$fs_end;tftp $loadaddr $rootfsfile;cp.b $loadaddr $fs_base $filesize;prot on
$fs_base $fs_end;cmp.b $loadaddr $fs_base $filesize;echo
*********************;echo * flrootfs Complete *;echo *********************
flub=mw.l $loadaddr ffffffff 10000;tftp $loadaddr $ubootbinfile;prot off
$uboot_base $uboot_end;erase $uboot_base $uboot_end;cp.b $loadaddr
$uboot_base $filesize;prot on $uboot_base $uboot_end;cmp.b $loadaddr
$uboot_base $filesize
fs_base=fc700000
fs_end=fe6fffff
hboot=run fargs addip addother;tftp $loadaddr $bootfile;prot off $fs_base
$fs_end;bootm $loadaddr
kernel_base=fc000000
kernel_end=fc6fffff
mtd_id=phys_mapped_flash
mtdkernel=7M@0x00000000(Kernel)
mtdrootfs=32M@0x00700000(RootFS)
mtduboot=768K@0x03F00000(U-Boot)
mtdunused=192K@0x03FC0000(Unused)
mtdfuturea=8M@0x02700000(Future-A)
mtdfutureb=16M@0x02F00000(Future-B)
mtdenvars=64K@0x03FF0000(EnvVars)
netdev=eth0
nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=$serverip:$rootpath
othbootargs=ramdisk_size=64000 panic=5
ramargs=setenv bootargs root=/dev/ram rw
rootfsfile=initrd
uboot_base=fff00000
uboot_end=fffbffff
uboot_version=2.1.1.9.0.502
ubootbinfile=u-boot.bin
usbargs=setenv bootargs root=/dev/uba1 rw rootfstype=ext3 rootdelay=3
usbboot=echo ***********************;echo * Starting usbboot... *;echo
***********************;run usbargs addmtd addip addother;bootm $kernel_base
ethaddr=00:c0:16:00:93:a1
ethact=TSEC0
RTC_bat_low=0
bootfile=/srv/tftp/bison/lexs/uImage
rootpath=/srv/nfs4/bison/lexs
serverip=172.30.0.2
gatewayip=172.30.1.1
ipaddr=172.30.2.208
bootcmd=run nfsboot
stdin=serial
stdout=serial
stderr=serial
Environment size: 2869/8188 bytes
etcunison=> boot
Speed: 100, full duplex
Using TSEC0 device
TFTP from server 172.30.0.2; our IP address is 172.30.2.208
Filename '/srv/tftp/bison/lexs/uImage'.
Load address: 0x800000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#####################
done
Bytes transferred = 3097895 (2f4527 hex)
## Booting kernel from Legacy Image at 00800000 ...
Image Name: Linux-4.9.48
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 3097831 Bytes = 3 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK