diff options
Diffstat (limited to '')
| -rwxr-xr-x | modules.d/99uefi-lib/module-setup.sh | 17 | ||||
| -rwxr-xr-x | modules.d/99uefi-lib/uefi-lib.sh | 162 |
2 files changed, 179 insertions, 0 deletions
diff --git a/modules.d/99uefi-lib/module-setup.sh b/modules.d/99uefi-lib/module-setup.sh new file mode 100755 index 0000000..6deeee8 --- /dev/null +++ b/modules.d/99uefi-lib/module-setup.sh @@ -0,0 +1,17 @@ +#!/bin/bash + +# called by dracut +check() { + return 255 +} + +# called by dracut +depends() { + echo bash + return 0 +} + +# called by dracut +install() { + inst_simple "$moddir/uefi-lib.sh" "/lib/uefi-lib.sh" +} diff --git a/modules.d/99uefi-lib/uefi-lib.sh b/modules.d/99uefi-lib/uefi-lib.sh new file mode 100755 index 0000000..06004ee --- /dev/null +++ b/modules.d/99uefi-lib/uefi-lib.sh @@ -0,0 +1,162 @@ +#!/bin/bash +# +# Copyright 2013 Red Hat, Inc. All rights reserved. +# Copyright 2013 Harald Hoyer <harald@redhat.com> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +getbyte() { + local IFS= LC_CTYPE=C res c=0 + read -r -n 1 -d '' c + res=$? + # the single quote in the argument of the printf + # yields the numeric value of $c (ASCII since LC_CTYPE=C) + [[ -n $c ]] && c=$(printf '%u' "'$c") || c=0 + printf "%s" "$c" + return $res +} + +getword() { + local b1=0 b2=0 val=0 + b1=$(getbyte) + b2=$(getbyte) + ((val = b2 * 256 + b1)) + echo "$val" + return 0 +} + +# E.g. Acpi(PNP0A08,0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/MAC(90E2BA265ED4,0x0)/Vlan(172)/Fibre(0x4EA06104A0CC0050,0x0) +uefi_device_path() { + data=${1:-/sys/firmware/efi/efivars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac} + [ -f "$data" ] || return 1 + + local IFS= LC_CTYPE=C res tt len type hextype first + first=1 + { + getword > /dev/null + getword > /dev/null + while :; do + type=$(getbyte) || return 1 + subtype=$(getbyte) || return 1 + len=$(getword) || return 1 + hextype=$(printf "%02x%02x" "$type" "$subtype") + if [[ $first == 1 ]]; then + first=0 + elif [[ $hextype != "7fff" ]]; then + printf "/" + fi + case $hextype in + 0101) + # PCI + tt=$(getword) + printf "PCI(0x%x,0x%x)" $((tt / 256)) $((tt & 255)) + ;; + 0201) + # ACPI + printf "Acpi(0x%x,0x%x)" $(($(getword) + $(getword) * 65536)) $(($(getword) + $(getword) * 65536)) + ;; + 0303) + # FIBRE + getword &> /dev/null + getword &> /dev/null + printf "Fibre(0x%x%x%x%x%x%x%x%x,0x%x)" \ + "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" \ + "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" \ + "$(($(getword) + $(getword) * 65536 + 4294967296 * ($(getword) + $(getword) * 65536)))" + ;; + 030b) + # MAC + printf "MAC(%02x%02x%02x%02x%02x%02x," "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" + for ((i = 0; i < 26; i++)); do tt=$(getbyte) || return 1; done + printf "0x%x)" "$(getbyte)" + ;; + 0314) + # VLAN + printf "VLAN(%d)" "$(getword)" + ;; + 7fff) + # END + printf "\n" + return 0 + ;; + *) + #printf "Unknown(Type:0x%02x SubType:0x%02x len=%d)\n" "$type" "$subtype" "$len" >&2 + for ((i = 0; i < len - 4; i++)); do tt=$(getbyte); done + ;; + esac + done + } < "$data" +} + +get_fcoe_boot_mac() { + data=${1:-/sys/firmware/efi/efivars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac} + [ -f "$data" ] || return 1 + local IFS= LC_CTYPE=C tt len type hextype + { + getword > /dev/null + getword > /dev/null + while :; do + type=$(getbyte) || return 1 + subtype=$(getbyte) || return 1 + len=$(getword) || return 1 + hextype=$(printf "%02x%02x" "$type" "$subtype") + case $hextype in + 030b) + # MAC + printf "%02x:%02x:%02x:%02x:%02x:%02x" "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" "$(getbyte)" + for ((i = 0; i < 27; i++)); do tt=$(getbyte) || return 1; done + ;; + 7fff) + # END + return 0 + ;; + *) + #printf "Unknown(Type:0x%02x SubType:0x%02x len=%d)\n" "$type" "$subtype" "$len" >&2 + for ((i = 0; i < len - 4; i++)); do tt=$(getbyte); done + ;; + esac + done + } < "$data" +} + +get_fcoe_boot_vlan() { + data=${1:-/sys/firmware/efi/efivars/FcoeBootDevice-a0ebca23-5f9c-447a-a268-22b6c158c2ac} + [ -f "$data" ] || return 1 + local IFS= LC_CTYPE=C tt len type hextype + { + getword > /dev/null + getword > /dev/null + while :; do + type=$(getbyte) || return 1 + subtype=$(getbyte) || return 1 + len=$(getword) || return 1 + hextype=$(printf "%02x%02x" "$type" "$subtype") + case $hextype in + 0314) + # VLAN + printf "%d" "$(getword)" + ;; + 7fff) + # END + return 0 + ;; + *) + #printf "Unknown(Type:0x%02x SubType:0x%02x len=%d)\n" "$type" "$subtype" "$len" >&2 + for ((i = 0; i < len; i++)); do tt=$(getbyte); done + ;; + esac + done + } < "$data" +} |