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9bc36ee344
The verification flag was being passed through to the bootloader template script but no longer had any effect. Force the base image to always remain writable, its only purpose is to be modified in a later build step anyway.
127 lines
3.5 KiB
Bash
Executable File
127 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Helper script to generate GRUB bootloader configuration files for
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# x86 platforms.
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SCRIPT_ROOT=$(readlink -f $(dirname "$0")/..)
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. "${SCRIPT_ROOT}/common.sh" || exit 1
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# We're invoked only by build_image, which runs in the chroot
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assert_inside_chroot
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# Flags.
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DEFINE_string arch "x86" \
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"The boot architecture: arm or x86. (Default: x86)"
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DEFINE_string to "/tmp/boot" \
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"Path to populate with bootloader templates (Default: /tmp/boot)"
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DEFINE_string boot_args "" \
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"Additional boot arguments to pass to the commandline (Default: '')"
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# Parse flags
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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switch_to_strict_mode
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# Useful for getting partition UUID values
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. "${BUILD_LIBRARY_DIR}/disk_layout_util.sh" || exit 1
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# Common kernel command-line args
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common_args="console=tty0 ro noswap cros_legacy"
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common_args="${common_args} ${FLAGS_boot_args}"
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# Populate the x86 rootfs to support legacy and EFI bios config templates.
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# The templates are used by the installer to populate partition 12 with
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# the correct bootloader configuration.
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if [[ "${FLAGS_arch}" = "x86" || "${FLAGS_arch}" = "amd64" ]]; then
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sudo mkdir -p ${FLAGS_to}
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# Get partition UUIDs from the json config
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ROOTA="PARTUUID=$(get_uuid ROOT-A)"
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ROOTB="PARTUUID=$(get_uuid ROOT-B)"
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# Build configuration files for pygrub/pvgrub
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GRUB_DIR="${FLAGS_to}/grub"
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sudo mkdir -p "${GRUB_DIR}"
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# Add hvc0 for hypervisors
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grub_args="${common_args} console=hvc0"
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sudo_clobber "${GRUB_DIR}/menu.lst.A" <<EOF
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timeout 0
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title CoreOS A Root
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root (hd0,0)
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kernel /syslinux/vmlinuz.A ${grub_args} root=${ROOTA}
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title CoreOS B Root
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root (hd0,0)
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kernel /syslinux/vmlinuz.B ${grub_args} root=${ROOTB}
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EOF
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info "Emitted ${GRUB_DIR}/menu.lst.A"
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sudo_clobber "${GRUB_DIR}/menu.lst.B" <<EOF
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default 1
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EOF
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sudo_append "${GRUB_DIR}/menu.lst.B" <"${GRUB_DIR}/menu.lst.A"
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info "Emitted ${GRUB_DIR}/menu.lst.B"
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sudo cp ${GRUB_DIR}/menu.lst.A ${GRUB_DIR}/menu.lst
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SYSLINUX_DIR="${FLAGS_to}/syslinux"
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sudo mkdir -p "${SYSLINUX_DIR}"
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# Add ttyS0 as a secondary console, useful for qemu -nographic
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# This leaves /dev/console mapped to tty0 (vga) which is reasonable default.
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syslinux_args="console=ttyS0,115200n8 ${common_args}"
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sudo_clobber "${SYSLINUX_DIR}/syslinux.cfg" <<EOF
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SERIAL 0 115200
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PROMPT 0
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TIMEOUT 0
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DEFAULT boot_kernel
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include /syslinux/boot_kernel.cfg
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# coreos.A
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include /syslinux/root.A.cfg
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# coreos.B
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include /syslinux/root.B.cfg
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EOF
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info "Emitted ${SYSLINUX_DIR}/syslinux.cfg"
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# Different files are used so that the updater can only touch the file it
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# needs to for a given change. This will minimize any potential accidental
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# updates issues, hopefully.
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sudo_clobber "${SYSLINUX_DIR}/boot_kernel.cfg" <<EOF
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label boot_kernel
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menu label boot_kernel
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kernel vmlinuz-boot_kernel
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append ${syslinux_args} root=gptprio:
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EOF
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info "Emitted ${SYSLINUX_DIR}/boot_kernel.cfg"
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sudo_clobber "${SYSLINUX_DIR}/root.A.cfg" <<EOF
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label coreos.A
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menu label coreos.A
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kernel vmlinuz.A
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append ${syslinux_args} root=${ROOTA}
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EOF
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info "Emitted ${SYSLINUX_DIR}/root.A.cfg"
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sudo_clobber "${SYSLINUX_DIR}/root.B.cfg" <<EOF
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label coreos.B
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menu label coreos.B
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kernel vmlinuz.B
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append ${syslinux_args} root=${ROOTB}
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EOF
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info "Emitted ${SYSLINUX_DIR}/root.B.cfg"
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exit 0
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fi
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info "The target platform does not use bootloader templates."
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