mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-19 04:57:55 +00:00
138 lines
3.2 KiB
Bash
138 lines
3.2 KiB
Bash
#!/bin/sh
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#
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# Core shell functions that do not require bash. These functions are used with
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# busybox ash on legacy-flash boards, and with bash on all other boards.
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die() {
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echo >&2 "$*";
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sleep 2;
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exit 1;
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}
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warn() {
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echo >&2 "$*";
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sleep 1;
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}
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DEBUG() {
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if [ "$CONFIG_DEBUG_OUTPUT" = "y" ];then
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echo "DEBUG: $*" | tee -a /tmp/debug.log >&2;
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fi
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}
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TRACE() {
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if [ "$CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT" = "y" ];then
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echo "TRACE: $*" | tee -a /tmp/debug.log >&2;
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fi
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}
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preserve_rom() {
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TRACE "Under /etc/ash_functions:preserve_rom"
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new_rom="$1"
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old_files=`cbfs -t 50 -l 2>/dev/null | grep "^heads/"`
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for old_file in `echo $old_files`; do
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new_file=`cbfs.sh -o $1 -l | grep -x $old_file`
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if [ -z "$new_file" ]; then
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echo "+++ Adding $old_file to $1"
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cbfs -t 50 -r $old_file >/tmp/rom.$$ \
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|| die "Failed to read cbfs file from ROM"
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cbfs.sh -o $1 -a $old_file -f /tmp/rom.$$ \
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|| die "Failed to write cbfs file to new ROM file"
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fi
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done
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}
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recovery() {
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TRACE "Under /etc/ash_functions:recovery"
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echo >&2 "!!!!! $*"
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# Remove any temporary secret files that might be hanging around
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# but recreate the directory so that new tools can use it.
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#safe to always be true. Otherwise "set -e" would make it exit here
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shred -n 10 -z -u /tmp/secret/* 2> /dev/null || true
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rm -rf /tmp/secret
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mkdir -p /tmp/secret
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# ensure /tmp/config exists for recovery scripts that depend on it
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touch /tmp/config
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. /tmp/config
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if [ "$CONFIG_TPM" = "y" ]; then
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tpmr extend -ix 4 -ic recovery
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fi
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if [ "$CONFIG_RESTRICTED_BOOT" = y ]; then
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echo >&2 "Restricted Boot enabled, recovery console disabled, rebooting in 5 seconds"
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sleep 5
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/bin/reboot
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fi
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while [ true ]
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do
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echo >&2 "!!!!! Starting recovery shell"
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sleep 1
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if [ -x /bin/setsid ]; then
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/bin/setsid -c /bin/sh
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else
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/bin/sh
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fi
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done
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}
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pause_recovery() {
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TRACE "Under /etc/ash_functions:pause_recovery"
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read -p $'!!! Hit enter to proceed to recovery shell !!!\n'
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recovery $*
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}
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combine_configs() {
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TRACE "Under /etc/ash_functions:combine_configs"
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cat /etc/config* > /tmp/config
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}
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enable_usb()
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{
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TRACE "Under /etc/ash_functions:enable_usb"
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#insmod ehci_hcd prior of uhdc_hcd and ohci_hcd to suppress dmesg warning
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if ! lsmod | grep -q ehci_hcd; then
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insmod /lib/modules/ehci-hcd.ko \
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|| die "ehci_hcd: module load failed"
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fi
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if [ "$CONFIG_LINUX_USB_COMPANION_CONTROLLER" = y ]; then
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if ! lsmod | grep -q uhci_hcd; then
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insmod /lib/modules/uhci-hcd.ko \
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|| die "uhci_hcd: module load failed"
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fi
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if ! lsmod | grep -q ohci_hcd; then
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insmod /lib/modules/ohci-hcd.ko \
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|| die "ohci_hcd: module load failed"
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fi
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if ! lsmod | grep -q ohci_pci; then
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insmod /lib/modules/ohci-pci.ko \
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|| die "ohci_pci: module load failed"
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fi
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fi
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if ! lsmod | grep -q ehci_pci; then
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insmod /lib/modules/ehci-pci.ko \
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|| die "ehci_pci: module load failed"
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fi
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if ! lsmod | grep -q xhci_hcd; then
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insmod /lib/modules/xhci-hcd.ko \
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|| die "xhci_hcd: module load failed"
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fi
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if ! lsmod | grep -q xhci_pci; then
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insmod /lib/modules/xhci-pci.ko \
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|| die "xhci_pci: module load failed"
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sleep 2
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fi
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if [ "$CONFIG_USB_KEYBOARD" = y ]; then
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if ! lsmod | grep -q usbhid; then
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insmod /lib/modules/usbhid.ko \
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|| die "usbhid: module load failed"
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fi
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fi
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}
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