mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-20 21:43:11 +00:00
0a823cb491
Laptops can include optional USB keyboard support (default off unless the board also sets the default to 'y'). The setting is in the configuration GUI. CONFIG_USER_USB_KEYBOARD is now the user-controlled setting on those boards. 'CONFIG_USB_KEYBOARD' is no longer used to avoid any conflict with prior releases that expect this to be a compile-time setting only (conflicts risk total lock out requiring hardware flash, so some caution is justified IMO). Boards previously exporting CONFIG_USB_KEYBOARD now export CONFIG_USB_KEYBOARD_REQUIRED. Those boards don't have built-in keyboards, USB keyboard is always enabled. (librem_mini, librem_mini_v2, librem_11, librem_l1um, librem_l1um_v2, talos-2, kgpe-d16_workstation-usb_keyboard, x230-hotp-maximized_usb-kb). Librem laptops now export CONFIG_SUPPORT_USB_KEYBOARD to enable optional support. The default is still 'off'. Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
235 lines
7.8 KiB
Bash
Executable File
235 lines
7.8 KiB
Bash
Executable File
#! /bin/ash
|
|
# Note this is used on legacy-flash boards that lack bash, it runs with busybox
|
|
# ash. Calls to bash scripts must be guarded by checking config.
|
|
|
|
mknod /dev/ttyprintk c 5 3
|
|
echo "hello world" > /dev/ttyprintk
|
|
|
|
# Setup our path
|
|
export PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
|
|
|
|
# This is the very first script invoked by the Linux kernel and is
|
|
# running out of the ram disk. There are no fileysstems mounted.
|
|
# It is important to have a way to invoke a recovery shell in case
|
|
# the boot scripts are messed up, but also important to modify the
|
|
# PCRs if this happens to prevent the TPM disk keys from being revealed.
|
|
|
|
# First thing it is vital to mount the /dev and other system directories
|
|
mkdir /proc /sys /dev /tmp /boot /media 2>&- 1>&-
|
|
mount /dev 2>/dev/ttyprintk
|
|
mount /proc 2>/dev/ttyprintk
|
|
mount /sys 2>/dev/ttyprintk
|
|
|
|
if [ "$CONFIG_LINUXBOOT" = "y" ]; then
|
|
mount /sys/firmware/efi/efivars
|
|
fi
|
|
|
|
# Setup the pty psudeo filesystem
|
|
mkdir /dev/pts
|
|
mount /dev/pts 2>/dev/ttyprintk
|
|
|
|
if [ ! -r /dev/ptmx ]; then
|
|
ln -s /dev/pts/ptmx /dev/ptmx
|
|
fi
|
|
|
|
# Needed by bash
|
|
[ -e /dev/stdin ] || ln -s /proc/self/fd/0 /dev/stdin
|
|
[ -e /dev/stdout ] || ln -s /proc/self/fd/1 /dev/stdout
|
|
[ -e /dev/stderr ] || ln -s /proc/self/fd/2 /dev/stderr
|
|
[ -e /dev/fd ] || ln -s /proc/self/fd /dev/fd
|
|
|
|
# Recovery shells will erase anything from here
|
|
mkdir -p /tmp/secret
|
|
|
|
# Now it is safe to print a banner
|
|
if [ -r /etc/motd ]; then
|
|
cat /etc/motd > /dev/tty0
|
|
fi
|
|
|
|
# Load the date from the hardware clock, setting it in local time
|
|
hwclock -l -s
|
|
|
|
# Read the system configuration parameters
|
|
. /etc/ash_functions
|
|
. /etc/config
|
|
|
|
# Board config had CONFIG_DEBUG_OUTPUT=y defined.
|
|
# Note that boards's coreboot config kernel command line "debug" option only will have all kernel messages output on console prior of this point
|
|
if [ "$CONFIG_DEBUG_OUTPUT" = "y" ]; then
|
|
#Maximize printk messages to output all to console (8=debug)
|
|
#DEBUG and TRACE calls will output to /dev/kmsg, outputting both on dmesg and on console
|
|
dmesg -n 8 || true
|
|
DEBUG "Debug output enabled from board CONFIG_DEBUG_OUTPUT=y option (/etc/config)"
|
|
else
|
|
# Board config did't have CONFIG_DEBUG_OUTPUT=y defined
|
|
# config.user extracted and combined from CBFS had CONFIG_DEBUG_OUTPUT=y
|
|
# Output only print messages with a priority of 4 (warnings) or lower (errors and critical) kernel messages to console
|
|
# This way, "debug" kernel command line option will have all kernel messages output on console prior of this point
|
|
# This is useful to debug boot issues but permits qemu board to boot without flooding console with kernel messages by disabling CONFIG_DEBUG_OUTPUT=y in qemu board config
|
|
dmesg -n 4 || true
|
|
DEBUG "Debug output enabled from /etc/config.user's CONFIG_DEBUG_OUTPUT=y after combine_configs (Config menu enabled Debug)"
|
|
fi
|
|
|
|
TRACE "Under init"
|
|
|
|
# set CONFIG_TPM dynamically before init
|
|
if [ ! -e /dev/tpm0 ]; then
|
|
CONFIG_TPM='n'
|
|
CONFIG_TPM2_TOOLS='n'
|
|
fi
|
|
|
|
#Specify whiptail background colors cues under FBWhiptail only
|
|
if [ -x /bin/fbwhiptail ]; then
|
|
export BG_COLOR_WARNING="${CONFIG_WARNING_BG_COLOR:-"--background-gradient 0 0 0 150 125 0"}"
|
|
export BG_COLOR_ERROR="${CONFIG_ERROR_BG_COLOR:-"--background-gradient 0 0 0 150 0 0"}"
|
|
else
|
|
export BG_COLOR_WARNING="${CONFIG_WARNING_BG_COLOR:-""}"
|
|
export BG_COLOR_ERROR="${CONFIG_ERROR_BG_COLOR:-""}"
|
|
fi
|
|
|
|
if [ "$CONFIG_TPM" = "y" ]; then
|
|
# Initialize tpm2 encrypted sessions here
|
|
tpmr startsession
|
|
fi
|
|
|
|
if [ "$CONFIG_COREBOOT" = "y" ]; then
|
|
[ -x /bin/bash ] && /bin/cbfs-init
|
|
fi
|
|
if [ "$CONFIG_LINUXBOOT" = "y" ]; then
|
|
/bin/uefi-init
|
|
fi
|
|
|
|
# Set GPG_TTY before calling gpg in key-init
|
|
export GPG_TTY=/dev/console
|
|
|
|
# Initialize gpnupg with distro/user keys and setup the keyrings
|
|
[ -x /bin/bash ] && /bin/key-init
|
|
|
|
# Override CONFIG_USE_BLOB_JAIL if needed and persist via user config
|
|
if lspci -n | grep -E -q "8086:(2723|4df0)"; then
|
|
if ! cat /etc/config.user 2>/dev/null | grep -q "USE_BLOB_JAIL"; then
|
|
echo "CONFIG_USE_BLOB_JAIL=y" >> /etc/config.user
|
|
fi
|
|
fi
|
|
|
|
# Override CONFIG_TPM and CONFIG_TPM2_TOOLS from /etc/config with runtime value
|
|
# determined above.
|
|
#
|
|
# Values in user config have higher priority during combining thus effectively
|
|
# changing the value for the rest of the scripts which source /tmp/config.
|
|
echo "export CONFIG_TPM=\"$CONFIG_TPM\"" >> /etc/config.user
|
|
echo "export CONFIG_TPM2_TOOLS=\"$CONFIG_TPM2_TOOLS\"" >> /etc/config.user
|
|
|
|
# CONFIG_BASIC was previously CONFIG_PUREBOOT_BASIC in the PureBoot distribution.
|
|
# Substitute it in config.user if present for backward compatibility.
|
|
sed -i -e 's/^export CONFIG_PUREBOOT_BASIC=/export CONFIG_BASIC=/g' /etc/config.user
|
|
|
|
combine_configs
|
|
. /tmp/config
|
|
|
|
# Enable maximum debug info from here if config.user extracted and combined from CBFS had CONFIG_DEBUG_OUTPUT=y
|
|
if [ "$CONFIG_DEBUG_OUTPUT" = "y" ]; then
|
|
#Output all kernel messages to console (8=debug)
|
|
#DEBUG and TRACE calls will be in dmesg and on console
|
|
if ! grep -q 'CONFIG_DEBUG_OUTPUT="y"' /etc/config;then
|
|
# Board config did't have CONFIG_DEBUG_OUTPUT=y defined
|
|
# config.user extracted and combined from CBFS had CONFIG_DEBUG_OUTPUT=y
|
|
dmesg -n 8
|
|
DEBUG "Debug output enabled from /etc/config.user's CONFIG_DEBUG_OUTPUT=y after combine_configs (Config menu enabled Debug)"
|
|
TRACE "Under init:after combine_configs"
|
|
fi
|
|
fi
|
|
|
|
|
|
# Setup recovery serial shell
|
|
if [ ! -z "$CONFIG_BOOT_RECOVERY_SERIAL" ]; then
|
|
stty -F "$CONFIG_BOOT_RECOVERY_SERIAL" 115200
|
|
pause_recovery 'Console recovery shell' \
|
|
< "$CONFIG_BOOT_RECOVERY_SERIAL" \
|
|
> "$CONFIG_BOOT_RECOVERY_SERIAL" 2>&1 &
|
|
fi
|
|
|
|
# load USB modules for boards using a USB keyboard
|
|
if [ "$CONFIG_USB_KEYBOARD_REQUIRED" = y ] || [ "$CONFIG_USER_USB_KEYBOARD" = "y" ]; then
|
|
enable_usb
|
|
fi
|
|
|
|
# If the user has been holding down r, enter a recovery shell
|
|
# otherwise immediately start the configured boot script.
|
|
# We don't print a prompt, since this is a near instant timeout.
|
|
read \
|
|
-t 0.1 \
|
|
-n 1 \
|
|
boot_option
|
|
echo
|
|
|
|
if [ "$boot_option" = "r" ]; then
|
|
# Start an interactive shell
|
|
recovery 'User requested recovery shell'
|
|
# just in case...
|
|
exit
|
|
elif [ "$boot_option" = "o" ]; then
|
|
# Launch OEM Factory Reset/Re-Ownership
|
|
oem-factory-reset
|
|
# just in case...
|
|
exit
|
|
fi
|
|
|
|
if [ "$CONFIG_BASIC" = "y" ]; then
|
|
echo -e "***** BASIC mode: tamper detection disabled\n" > /dev/tty0
|
|
fi
|
|
|
|
# export firmware version
|
|
export FW_VER=$(dmesg | grep 'DMI' | grep -o 'BIOS.*' | cut -f2- -d ' ')
|
|
# chop off date, since will always be epoch w/timeless builds
|
|
FW_VER=${FW_VER::-10}
|
|
|
|
# Add our boot devices into the /etc/fstab, if they are defined
|
|
# in the configuration file.
|
|
if [ ! -z "$CONFIG_BOOT_DEV" ]; then
|
|
echo >> /etc/fstab "$CONFIG_BOOT_DEV /boot auto defaults,ro 0 0"
|
|
fi
|
|
|
|
# Set the console font if needed
|
|
[ -x /bin/bash ] && setconsolefont.sh
|
|
|
|
if [ "$CONFIG_BASIC" = "y" ]; then
|
|
CONFIG_BOOTSCRIPT=/bin/gui-init-basic
|
|
export CONFIG_HOTPKEY=n
|
|
fi
|
|
|
|
# Perform board-specific init if present
|
|
if [ -x /bin/board-init.sh ]; then
|
|
/bin/board-init.sh
|
|
fi
|
|
|
|
if [ ! -x "$CONFIG_BOOTSCRIPT" -a ! -x "$CONFIG_BOOTSCRIPT_NETWORK" ]; then
|
|
recovery 'Boot script missing? Entering recovery shell'
|
|
else
|
|
if [ -x "$CONFIG_BOOTSCRIPT_NETWORK" ]; then
|
|
echo '***** Network Boot:' $CONFIG_BOOTSCRIPT_NETWORK
|
|
$CONFIG_BOOTSCRIPT_NETWORK
|
|
echo '***** Network Boot Completed:' $CONFIG_BOOTSCRIPT_NETWORK
|
|
# not blocking
|
|
fi
|
|
|
|
if [ -x "$CONFIG_BOOTSCRIPT" ]; then
|
|
echo '***** Normal boot:' $CONFIG_BOOTSCRIPT
|
|
|
|
if [ -x /bin/setsid ] && [ -x /bin/agetty ]; then
|
|
for console in $CONFIG_BOOT_EXTRA_TTYS; do
|
|
setsid agetty -aroot -l"$CONFIG_BOOTSCRIPT" "$console" linux &
|
|
done
|
|
fi
|
|
|
|
#Setup a control tty so that all terminals outputs correct tty when tty is called
|
|
exec cttyhack "$CONFIG_BOOTSCRIPT"
|
|
else
|
|
# wait for boot via network to occur
|
|
pause_recovery 'Override network boot. Entering recovery shell'
|
|
fi
|
|
fi
|
|
|
|
# We should never reach here, but just in case...
|
|
recovery 'Boot script failure? Entering recovery shell'
|