mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-24 15:16:42 +00:00
173 lines
7.5 KiB
Bash
Executable File
173 lines
7.5 KiB
Bash
Executable File
#!/bin/bash
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#
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set -e -o pipefail
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. /etc/functions
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. /etc/gui_functions
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. /tmp/config
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TRACE_FUNC
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if [ "$CONFIG_RESTRICTED_BOOT" = y ]; then
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whiptail_error --title 'Restricted Boot Active' \
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--msgbox "Disable Restricted Boot to flash new firmware." 0 80
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exit 1
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fi
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# Most boards use a .rom file as a "plain" update, contents of the BIOS flash
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UPDATE_PLAIN_EXT=rom
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# talos-2 uses a .tgz file for its "plain" update, contains other parts as well
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# as its own integrity check. This isn't integrated with the "update package"
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# workflow (as-is, a .tgz could be inside that package in theory) but more work
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# would be needed to properly integrate it.
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if [ "${CONFIG_BOARD%_*}" = talos-2 ]; then
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UPDATE_PLAIN_EXT=tgz
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fi
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# Check that a glob matches exactly one thing. If so, echoes the single value.
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# Otherwise, fails. As always, do not quote the glob.
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#
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# E.g, locate a ROM with unknown version when only one should be present:
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# if ROM_FILE="$(single_glob /media/heads-*.rom)"; then
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# echo "ROM is $ROM_FILE"
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# else
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# echo "Failed to find a ROM" >&2
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# fi
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single_glob() {
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if [ "$#" -eq 1 ] && [ -f "$1" ]; then
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echo "$1"
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else
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return 1
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fi
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}
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while true; do
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unset menu_choice
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whiptail_type $BG_COLOR_MAIN_MENU --title "Firmware Management Menu" \
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--menu "Select the firmware function to perform\n\nRetaining settings copies existing settings to the new firmware:\n* Keeps your GPG keyring\n* Keeps changes to the default /boot device\n\nErasing settings uses the new firmware as-is:\n* Erases any existing GPG keyring\n* Restores firmware to default factory settings\n* Clears out /boot signatures\n\nIf you are just updating your firmware, you probably want to retain\nyour settings." 0 80 10 \
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'f' ' Flash the firmware with a new ROM, retain settings' \
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'c' ' Flash the firmware with a new ROM, erase settings' \
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'x' ' Exit' \
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2>/tmp/whiptail || recovery "GUI menu failed"
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menu_choice=$(cat /tmp/whiptail)
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case "$menu_choice" in
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"x")
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exit 0
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;;
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f | c)
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if (whiptail_warning --title 'Flash the BIOS with a new ROM' \
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--yesno "You will need to insert a USB drive containing your BIOS image (*.zip or\n*.$UPDATE_PLAIN_EXT).\n\nAfter you select this file, this program will reflash your BIOS.\n\nDo you want to proceed?" 0 80); then
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mount_usb
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if grep -q /media /proc/mounts; then
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# 'find' parameters to match desired ROM extensions
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FIND_ROM_EXTS=(\( -name "*.$UPDATE_PLAIN_EXT" -o -type f -name "*.zip" \))
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if [ "${CONFIG_BOARD%_*}" = talos-2 ]; then
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# Show only *.tgz on talos-2 (lacks ZIP update package support)
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FIND_ROM_EXTS=(-name "*.$UPDATE_PLAIN_EXT")
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fi
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# Media errors can cause this to fail (flash drive pulled, filesystem
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# corruption, etc.)
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if ! find /media ! -path '*/\.*' -type f "${FIND_ROM_EXTS[@]}" | sort >/tmp/filelist.txt; then
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whiptail --title 'Unable to read USB drive' \
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--msgbox "The USB drive is not readable. Check the drive, reformat, or try a
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\ndifferent drive." 16 60
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exit 1
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fi
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file_selector "/tmp/filelist.txt" "Choose the ROM to flash"
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if [ "$FILE" == "" ]; then
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exit 1
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else
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PKG_FILE=$FILE
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fi
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# Display the package file without the "/media/" prefix
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PKG_FILE_DISPLAY="${PKG_FILE#"/media/"}"
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# Unzip the package
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PKG_EXTRACT="/tmp/flash_gui/update_package"
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rm -rf "$PKG_EXTRACT"
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mkdir -p "$PKG_EXTRACT"
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# is an update package provided?
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if [ -z "${PKG_FILE##*.zip}" ]; then
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# If extraction fails, delete everything and fall through to the
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# integrity failure prompt. This is the most likely path if the ROM
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# was actually corrupted in transit. Corrupting the ZIP in a way that
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# still extracts is possible (the sha256sum detects this) but less
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# likely.
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unzip "$PKG_FILE" -d "$PKG_EXTRACT" || rm -rf "$PKG_EXTRACT"
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# Older packages had /tmp/verified_rom hard-coded in the sha256sum.txt
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# Remove that so it's a relative path to the ROM in the package.
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# Ignore failure, if there is no sha256sum.txt the sha256sum will fail
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sed -i -e 's| /tmp/verified_rom/\+| |g' "$PKG_EXTRACT/sha256sum.txt" || true
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# check file integrity
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if ! (cd "$PKG_EXTRACT" && sha256sum -cs sha256sum.txt); then
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whiptail --title 'ROM Integrity Check Failed! ' \
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--msgbox "Integrity check failed in\n$PKG_FILE_DISPLAY.\nDid not flash.\n\nPlease check your file (e.g. re-download).\n" 16 60
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exit 1
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fi
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# The package must contain exactly one *.rom file, flash that.
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if ! PACKAGE_ROM="$(single_glob "$PKG_EXTRACT/"*."$UPDATE_PLAIN_EXT")"; then
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whiptail --title 'BIOS Image Not Found! ' \
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--msgbox "A BIOS image was not found in\n$PKG_FILE_DISPLAY.\n\nPlease check your file (e.g. re-download).\n" 16 60
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exit 1
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fi
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if ! whiptail_warning --title 'Flash ROM?' \
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--yesno "This will replace your current ROM with:\n\n$PKG_FILE_DISPLAY\n\nDo you want to proceed?" 0 80; then
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exit 1
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fi
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# Continue on using the verified ROM
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ROM="$PACKAGE_ROM"
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else
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# talos-2 uses a .tgz file for its "plain" update, contains other parts as well, validated against hashes under flash.sh
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# Skip prompt for hash validation for talos-2. Only method is through tgz or through bmc with individual parts
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if [ "${CONFIG_BOARD%_*}" != talos-2 ]; then
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# Though a plain ROM isn't a package, copy it to /tmp before doing
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# anything, so we can be sure the media won't disappear or fail
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# while flashing.
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if ! cp "$PKG_FILE" "$PKG_EXTRACT/"; then
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whiptail --title 'Failed to read ROM' \
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--msgbox "Failed to read ROM:\n$PKG_FILE_DISPLAY\n\nPlease check your file (e.g. re-download).\n" 16 60
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exit 1
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fi
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ROM="$PKG_EXTRACT/$(basename "$PKG_FILE")"
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ROM_HASH=$(sha256sum "$ROM" | awk '{print $1}')
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if ! (whiptail_error --title 'Flash ROM without integrity check?' \
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--yesno "You have provided a *.$UPDATE_PLAIN_EXT file. The integrity of the file can not be\nchecked automatically for this file type.\n\nROM: $PKG_FILE_DISPLAY\nSHA256SUM: $ROM_HASH\n\nIf you do not know how to check the file integrity yourself,\nyou should use a *.zip file instead.\n\nIf the file is damaged, you will not be able to boot anymore.\nDo you want to proceed flashing without file integrity check?" 0 80); then
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exit 1
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fi
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else
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#We are on talos-2, so we have a tgz file. We will pass it directly to flash.sh which will take care of it
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ROM="$PKG_FILE"
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fi
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fi
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if [ "$menu_choice" == "c" ]; then
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/bin/flash.sh -c "$ROM"
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# after flash, /boot signatures are now invalid so go ahead and clear them
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if ls /boot/kexec* >/dev/null 2>&1; then
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(
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mount -o remount,rw /boot 2>/dev/null
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rm /boot/kexec* 2>/dev/null
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mount -o remount,ro /boot 2>/dev/null
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)
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fi
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else
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/bin/flash.sh "$ROM"
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fi
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whiptail --title 'ROM Flashed Successfully' \
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--msgbox "$PKG_FILE_DISPLAY\n\nhas been flashed successfully.\n\nPress Enter to reboot\n" 0 80
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umount /media
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/bin/reboot
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fi
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fi
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;;
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esac
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done
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exit 0
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