| #!/bin/sh |
| |
| # Get the mtd device number (mtdX) |
| findmtd() { |
| m="$(grep -xl "$1" /sys/class/mtd/*/name)" |
| m="${m%/name}" |
| m="${m##*/}" |
| echo "${m}" |
| } |
| |
| # Attach the pnor mtd device to ubi |
| attach_ubi() { |
| pnormtd="$(findmtd pnor)" |
| pnor="${pnormtd#mtd}" |
| pnordev="/dev/mtd${pnor}" |
| |
| ubiattach /dev/ubi_ctrl -m "${pnor}" -d "${pnor}" |
| rc=$? |
| if [ ${rc} -ne 0 ]; then |
| # Check the pnor mtd device is formatted as ubi by reading the first 3 byes, |
| # which should be the ascii chars 'UBI' |
| magic="$(hexdump -C -n 3 ${pnordev})" |
| if [[ "${magic}" =~ "UBI" ]]; then |
| # Device already formatted as ubi, ubiattach failed for some other reason |
| return ${rc} |
| else |
| # Format device as ubi |
| echo "Starting ubiformat ${pnordev}" |
| ubiformat "${pnordev}" -y -q |
| # Retry the ubiattach |
| ubiattach /dev/ubi_ctrl -m "${pnor}" -d "${pnor}" |
| fi |
| fi |
| } |
| |
| case "$1" in |
| ubiattach) |
| attach_ubi |
| ;; |
| *) |
| echo "Invalid argument" |
| exit 1 |
| ;; |
| esac |
| rc=$? |
| if [ ${rc} -ne 0 ]; then |
| echo "$0: error ${rc}" |
| exit ${rc} |
| fi |