i.MX25 SODIMM PC Recovery
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Description
The recovery procedure consists of following steps:
- Loading bootloader binary over JTAG interface using OpenOCD Programming feature
- Running bootloader from RAM
- Flashing bootloader over Ethernet
- Erasing bootloader environment
- Flashing kernel over Ethernet
- Flashing root filesystem over Ethernet
- Reseting module
Requirements:
- JTAG adapter with OpenOCD software
- Serial adapter with terminal application
- Running TFTP server
- Running DHCP server (optional)
Yocto Project
Downloading files
Store the binaries into the active TFTP directory:
cd /srv/tftp/vmx25 wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/barebox/binaries/barebox-vmx25-1.0.img wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/linux/binaries/zImage-vmx25-1.0.bin wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/linux/binaries/zImage-vmx25-254-1.0.dtb wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/linux/binaries/linux/zImage-vmx25-264-1.0.dtb wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/linux/binaries/zImage-vmx25-265-1.0.dtb wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/yocto/binaries/core-image-base-vmx25-1.0.ubi
Updating bootloader
#dhcp eth0.serverip=192.168.1.1 eth0.ipaddr=192.168.1.2 eth0.netmask=255.255.255.0 image=vmx25/barebox-vmx25-1.0.img part=/dev/nand0.barebox.bb unprotect $part erase $part tftp $image $part erase /dev/nand0.environment reset
Updating kernel
#dhcp eth0.serverip=192.168.1.1 eth0.ipaddr=192.168.1.2 eth0.netmask=255.255.255.0 image=vmx25/zImage-vmx25-1.0.bin part=/dev/nand0.kernel.bb unprotect $part erase $part tftp $image $part
Updating DTB files
#dhcp eth0.serverip=192.168.1.1 eth0.ipaddr=192.168.1.2 eth0.netmask=255.255.255.0 tftp vmx25/zImage-vmx25-254-1.0.dtb /env/dtb/imx25-voipac-vmx25-254.dtb tftp vmx25/zImage-vmx25-264-1.0.dtb /env/dtb/imx25-voipac-vmx25-264.dtb tftp vmx25/zImage-vmx25-265-1.0.dtb /env/dtb/imx25-voipac-vmx25-265.dtb saveenv
Based on the module configuration, env/config-board should be adjusted:
edit env/config-board ... # BASIC=254, PRO=264, MAX=265 #global.vmx.model=254 #global.vmx.model=264 global.vmx.model=265 ... saveenv
Updating filesystem
#dhcp eth0.serverip=192.168.1.1 eth0.ipaddr=192.168.1.2 eth0.netmask=255.255.255.0 image=vmx25/core-image-base-vmx25-1.0.ubi part=/dev/nand0.rootfs.bb unprotect $part erase $part tftp $image $part reset
Busybox version
Downloading files
cd /srv/tftp/vmx25 wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/barebox/binaries/old/barebox-2014.03.0_vmx25_20151129.img wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/linux/binaries/old/zImage-3.12.13_sdint_vmx25_20151129.bin wget http://downloads.voipac.com/files/i.MX25_SODIMM_PC-Development_kit/module/software/filesystem/binaries/rootfs-1.22-ubifs_vmx25_20140817.bin
Updating bootloader
release=20151129
dhcp
eth0.serverip=192.168.0.1
update barebox vmx25/barebox-2014.03.0_vmx25_${release}.img
erase /dev/nand0.environment
reset
Updating bootloader environmnet
The configuration file need to be updated according to the module configuration and bootmode selection:
barebox@Voipac VMX25:/ edit /env/config ... # Module Configuration (Device Tree mode) # BASIC=254, PRO=264, MAX=265 #global.vmxmodel=254 #global.vmxmodel=264 global.vmxmodel=265 # Nand Boot Mode global.boot.default=nand-legacy-ubi ... barebox@Voipac VMX25:/ saveenv barebox@Voipac VMX25:/ reset
Updating kernel
release=20151129
dhcp
eth0.serverip=192.168.0.1
update kernel vmx25/zImage-3.12.13_sdint_vmx25_${release}.bin
Updating UBIFS filesystem
release=20140817
dhcp
eth0.serverip=192.168.0.1
update rootfs vmx25/rootfs-1.22-ubifs_vmx25_${release}.bin