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partition_scripts/test-partitioning_cgpt.sh

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#!/usr/bin/env zsh
set -x
# Partition table for root and boot
parted_type="gpt"
gpt_idbloader=(64 8063)
gpt_uboot=(16384 24575)
gpt_trust=(24576 32767)
gpt_boot=(32768 229376) # start and end values for partitioning the `boot` partition.
gpt_root=(262144) # currently libdevuansdk chooses this as a startpoint, and maxes out remaining
bootfs="vfat"
rootfs="ext4"
# Define max sizes and offsets
IDBLOADER_OFFSET=$((4*1024*1024/512)) # 4MiB 8192
UBOOT_OFFSET=$((8*1024*1024/512)) # 8MiB 16384
TRUST_OFFSET=$((12*1024*1024/512)) # 12MiB 24575
BOOT_OFFSET=$((16*1024*1024/512)) # 16MiB 32768
ROOT_OFFSET=$((128*1024*1024/512)) # 128MiB 262144
gpt_idbloader=(64 $((IDBLOADER_OFFSET-1)))
gpt_uboot=($((IDBLOADER_OFFSET)) $((TRUST_OFFSET-1)))
gpt_trust=($((TRUST_OFFSET)) $((BOOT_OFFSET-1)))
gpt_boot=($((BOOT_OFFSET)) $((ROOT_OFFSET-1)))
gpt_root=($((ROOT_OFFSET)))
size=4098
image_name=decode-cgpt
workdir=${PWD}
dd if=/dev/zero \
of=$workdir/${image_name}.img \
bs=1M \
count=$size
parted $workdir/${image_name}.img --script -- mklabel gpt
cgpt create -z $workdir/${image_name}.img
cgpt create $workdir/${image_name}.img
cgpt repair $workdir/${image_name}.img
cgpt show $workdir/${image_name}.img
# Create partition using start and end values for partitioning the `idbloader` partition.
# -i 3 -l idbloader -b 64 -s 8063 -t basicdata
#
# -i Specify partition number
# -l says label in the instructions but actually changes the name
# -b First block (a.k.a. start of partition)
# -s Size (in blocks)
# -t Partition Type GUID - see below after code
cgpt add \
-i 3 \
-l idbloader \
-b ${gpt_idbloader[1]} \
-s ${gpt_idbloader[2]} \
-t data \
$workdir/${image_name}.img
# Create partition using start and end values for partitioning the `uboot` partition.
# -i 4 -l uboot -b 16384 -s 24575 -t basicdata
cgpt add \
-i 4 \
-l uboot \
-b ${gpt_uboot[1]} \
-s ${gpt_uboot[2]} \
-t data \
$workdir/${image_name}.img
## Create partition using start and end values for partitioning the `trust` partition.
# -i 5 -l trust -b 24576 -s 32767 -t basicdata
cgpt add \
-i 5 \
-l trust \
-b ${gpt_trust[1]} \
-s ${gpt_trust[2]} \
-t data \
$workdir/${image_name}.img
# Create partition using start and end values for partitioning the `boot` partition.
# -i 1 -l kernel -b 32768 -s 229376 -t kernel -S 1 -T 5 -P 10
cgpt add \
-i 1 \
-l boot \
-b ${gpt_boot[1]} \
-s ${gpt_boot[2]} \
-t kernel \
-S 1 -T 5 -P 10 \
$workdir/${image_name}.img
# Create partion using just the start value, and maxes out remaining,
# -i 2 -l root -b 262144 -s 8130527 -t data
cgpt add \
-i 2 \
-l root \
-b ${gpt_root[1]} \
-s $(expr $(cgpt show $workdir/${image_name}.img | \
awk '/Sec GPT table/ {print $1}') - ${gpt_root[1]}) \
-t data \
$workdir/${image_name}.img
sgdisk -p $workdir/${image_name}.img
# cgpt add -h
# The partition type may also be given as one of these aliases:
# firmware ChromeOS firmware FFFF
# kernel ChromeOS kernel 7F00 ChromeOS kernel
# rootfs ChromeOS rootfs 7F01 ChromeOS root
# data Linux data 8300 Linux filesystem
# basicdata Basic data 0700 Microsoft basic data
# reserved ChromeOS reserved 7F02 ChrOS reserved
# efi EFI System Partition EF00 EFI system partition
# unused Unused (nonexistent) partition NOT AVAILABLE
# sgdisk -L
#
# 0700 Microsoft basic data 0c01 Microsoft reserved
# 2700 Windows RE 3000 ONIE boot
# 3001 ONIE config 3900 Plan 9
# 4100 PowerPC PReP boot 4200 Windows LDM data
# 4201 Windows LDM metadata 4202 Windows Storage Spaces
# 7501 IBM GPFS 7f00 ChromeOS kernel
# 7f01 ChromeOS root 7f02 ChromeOS reserved
# 8200 Linux swap 8300 Linux filesystem
# 8301 Linux reserved 8302 Linux /home
# 8303 Linux x86 root (/) 8304 Linux x86-64 root (/)
# 8305 Linux ARM64 root (/) 8306 Linux /srv
# 8307 Linux ARM32 root (/) 8308 Linux dm-crypt
# 8309 Linux LUKS 830a Linux IA-64 root (/)
# 830b Linux x86 root verity 830c Linux x86-64 root verity
# 830d Linux ARM32 root verity 830e Linux ARM64 root verity
# 830f Linux IA-64 root verity 8310 Linux /var
# 8311 Linux /var/tmp 8400 Intel Rapid Start
# 8500 Container Linux /usr 8501 Container Linux resizable rootfs
# 8502 Container Linux /OEM customization 8503 Container Linux root on RAID
# 8e00 Linux LVM a000 Android bootloader
# a001 Android bootloader 2 a002 Android boot 1
# a003 Android recovery 1 a004 Android misc
# a005 Android metadata a006 Android system 1
# a007 Android cache a008 Android data
# a009 Android persistent a00a Android factory
# a00b Android fastboot/tertiary a00c Android OEM
# a00d Android vendor a00e Android config
# a00f Android factory (alt) a010 Android meta
# a011 Android EXT a012 Android SBL1
# a013 Android SBL2 a014 Android SBL3
# a015 Android APPSBL a016 Android QSEE/tz
# a017 Android QHEE/hyp a018 Android RPM
# a019 Android WDOG debug/sdi a01a Android DDR
# a01b Android CDT a01c Android RAM dump
# a01d Android SEC a01e Android PMIC
# a01f Android misc 1 a020 Android misc 2
# a021 Android device info a022 Android APDP
# a023 Android MSADP a024 Android DPO
# a025 Android recovery 2 a026 Android persist
# a027 Android modem ST1 a028 Android modem ST2
# a029 Android FSC a02a Android FSG 1
# a02b Android FSG 2 a02c Android SSD
# a02d Android keystore a02e Android encrypt
# a02f Android EKSST a030 Android RCT
# a031 Android spare1 a032 Android spare2
# a033 Android spare3 a034 Android spare4
# a035 Android raw resources a036 Android boot 2
# a037 Android FOTA a038 Android system 2
# a039 Android cache a03a Android user data
# a03b LG (Android) advanced flasher a03c Android PG1FS
# a03d Android PG2FS a03e Android board info
# a03f Android MFG a040 Android limits
# a200 Atari TOS basic data a500 FreeBSD disklabel
# a501 FreeBSD boot a502 FreeBSD swap
# a503 FreeBSD UFS a504 FreeBSD ZFS
# a505 FreeBSD Vinum/RAID a580 Midnight BSD data
# a581 Midnight BSD boot a582 Midnight BSD swap
# a583 Midnight BSD UFS a584 Midnight BSD ZFS
# a585 Midnight BSD Vinum a600 OpenBSD disklabel
# a800 Apple UFS a901 NetBSD swap
# a902 NetBSD FFS a903 NetBSD LFS
# a904 NetBSD concatenated a905 NetBSD encrypted
# a906 NetBSD RAID ab00 Recovery HD
# af00 Apple HFS/HFS+ af01 Apple RAID
# af02 Apple RAID offline af03 Apple label
# af04 AppleTV recovery af05 Apple Core Storage
# af06 Apple SoftRAID Status af07 Apple SoftRAID Scratch
# af08 Apple SoftRAID Volume af09 Apple SoftRAID Cache
# af0a Apple APFS b300 QNX6 Power-Safe
# bc00 Acronis Secure Zone be00 Solaris boot
# bf00 Solaris root bf01 Solaris /usr & Mac ZFS
# bf02 Solaris swap bf03 Solaris backup
# bf04 Solaris /var bf05 Solaris /home
# bf06 Solaris alternate sector bf07 Solaris Reserved 1
# bf08 Solaris Reserved 2 bf09 Solaris Reserved 3
# bf0a Solaris Reserved 4 bf0b Solaris Reserved 5
# c001 HP-UX data c002 HP-UX service
# e100 ONIE boot e101 ONIE config
# e900 Veracrypt data ea00 Freedesktop $BOOT
# eb00 Haiku BFS ed00 Sony system partition
# ed01 Lenovo system partition ef00 EFI system partition
# ef01 MBR partition scheme ef02 BIOS boot partition
# f800 Ceph OSD f801 Ceph dm-crypt OSD
# f802 Ceph journal f803 Ceph dm-crypt journal
# f804 Ceph disk in creation f805 Ceph dm-crypt disk in creation
# f806 Ceph block f807 Ceph block DB
# f808 Ceph block write-ahead log f809 Ceph lockbox for dm-crypt keys
# f80a Ceph multipath OSD f80b Ceph multipath journal
# f80c Ceph multipath block 1 f80d Ceph multipath block 2
# f80e Ceph multipath block DB f80f Ceph multipath block write-ahead l
# f810 Ceph dm-crypt block f811 Ceph dm-crypt block DB
# f812 Ceph dm-crypt block write-ahead lo f813 Ceph dm-crypt LUKS journal
# f814 Ceph dm-crypt LUKS block f815 Ceph dm-crypt LUKS block DB
# f816 Ceph dm-crypt LUKS block write-ahe f817 Ceph dm-crypt LUKS OSD
# fb00 VMWare VMFS fb01 VMWare reserved
# fc00 VMWare kcore crash protection fd00 Linux RAID
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