-
https://isolated.site/category/n1/
- lots of good research posts
- inspired to reserve env/reserved partition as bad block and format single rootfs
- ex4load works with disable 64-bit feature
-
https://github.com/isjerryxiao/n1-setup/
- physical partition offset list
-
https://github.com/yangxuan8282/phicomm-n1
- alpine version, not work in my N1 box
- future research for pxe boot
-
Telegram
- https://t.me/flippingflooping
- 群指定教程
- http://t.cn/Ew2ynzS 降级 + 刷官改（最新官改固件看下一行）
- http://t.cn/Ew2Lr3L 官改 Android 固件
- http://t.cn/Ew2yk1X 跑 Linux
- http://t.cn/Ew2ySQG Armbian Ubuntu 开热点
- http://t.cn/Ew2yUh7 Armbian 替换 dtb 解决断网问题
- http://t.cn/Ew2LFK8 变砖短接强刷
-
- Amlogic kernel/uboot/armbian/etc. upstream
-
http://linux-meson.com/doku.php
- Linux for Amlogic Meson
- logs/uboot-help.log
- bins/bootloader.bin
- bins/env.bin
- bins/reserved.bin
2097152 bootloader.bin
8388608 env.bin
4718592 reserved.bin
2.0M bootloader.bin
8.0M env.bin
4.5M reserved.bin
1.2M bootloader.bin.xz
3.1K env.bin.xz
259K reserved.bin.xz
- 2015.01-00010-gfe36fb9-dirty (Mar 17 2018 - 12:20:04) 01 uboot version
- Android version = V2.28_0620
Hit Enter or space or Ctrl+C key to stop autoboot -- : 0
gxl_p230_v1#<INTERRUPT>
-
/etc/fw_env.config -
https://github.com/ARM-software/u-boot/blob/master/tools/env/fw_env.config
-
https://github.com/nerves-project/nerves_system_rpi3/blob/master/rootfs_overlay/etc/fw_env.config
-
block device
- /dev/mmcblk1 = block device
- unit = Byte
- 0x27400000
mmc env offset: 0x2740000002 saveenv- match env start offset with partition table
- 0x10000 = 64 KiB
Environment size: 6028/65532 bytes02 env size
# Device name offset Env. size Flash sector size Number of sectors /dev/mmcblk1 0x27400000 0x10000
-
partition (Android ?)
- /dev/env = partition
- unit = Byte
- offset = 0
- Env. size = 0x10000 = 64 KiB
- Flash sector size = 0x10000 = 64 KiB
if the Flash sector size is ommitted, this value is assumed to be the same as the Environment size
- ? sector size = Env. size, then number of sectors = 1 ?
# Device name offset Env. size Flash sector size Number of sectors /dev/env 0x000000 0x10000 0x10000
- bins/env.bin
- serial = usid = SN15_0123456789
- ethaddr = AA:BB:CC:DD:EE:FF = mac (option)
- mac_wifi = AA:BB:CC:DD:EE:FE (option)
- bins/bootloader.bin
start offset/B end offset/B size Note 0 0x1f0 0x200 1 x 512B, sector blank 0x200 0x200000-1 2 MiB - 512 Byte = bootloader 0x200000 0x400000-1 0x200000 2 MiB blank
dd if=bootloader.bin of=bootloader.bin.1 bs=1024 count=2048
dd if=bootloader.bin of=bootloader.bin.2 bs=1024 skip=2048
hexdump -C bootloader.bin.2
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00200000
-
- https://isolated.site/2018/12/02/partition-table-format-of-phicomm-n1/
- refs/partition-table-format-of-phicomm-n1.md
start offset/B end offset/B size Note 0 0x220-1 0x220 544B, partition table 0x300000 0x320000-1 0x20000 128 KiB, 0xAA55 0x400000 0x480000-1 0x80000 0.5 MiB, bin 0x480000 0x4000000-1 blank
dd if=reserved.bin of=reserved.bin.1 bs=1024 count=4608
dd if=reserved.bin of=reserved.bin.2 bs=1024 skip=4608
hexdump -C reserved.bin.2
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
03b80000
- Partition table
- number_of_partitions = 0x0D = 13, match with 02.EMMC
PartitionTable:
16bytes: [signature] # = 'MPT\x0001.00.00\x00\x00\x00\x00'
uint32: [number_of_partitions]
array of `PartitionEntry`
checksum of partition entries
PartitionEntry:
16bytes: [lable]
uint64: [size_in_bytes]
uint64: [start_off_in_bytes]
uint64: [mask] # Defined in DTB. But what is it?
Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F
02400000 4D 50 54 00 30 31 2E 30 30 2E 30 30 00 00 00 00 MPT 01.00.00
02400010 0D 00 00 00 97 1F E1 05 62 6F 6F 74 6C 6F 61 64 ??bootload
02400020 65 72 00 00 00 00 00 00 00 00 40 00 00 00 00 00 er @
02400030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
02400040 72 65 73 65 72 76 65 64 00 00 00 00 00 00 00 00 reserved
02400050 00 00 00 04 00 00 00 00 00 00 40 02 00 00 00 00 @
02400060 00 00 00 00 00 00 00 00 63 61 63 68 65 00 00 00 cache
02400070 00 00 00 00 00 00 00 00 00 00 10 00 00 00 00 00
02400080 00 00 C0 06 00 00 00 00 02 00 00 00 00 00 00 00 ?
02400090 65 6E 76 00 00 00 00 00 00 00 00 00 00 00 00 00 env
024000A0 00 00 80 00 00 00 00 00 00 00 50 07 00 00 00 00 € P
024000B0 00 00 00 00 00 00 00 00 6C 6F 67 6F 00 00 00 00 logo
024000C0 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00 00
024000D0 00 00 50 08 00 00 00 00 01 00 00 00 00 00 00 00 P
024000E0 72 65 63 6F 76 65 72 79 00 00 00 00 00 00 00 00 recovery
024000F0 00 00 00 02 00 00 00 00 00 00 C0 2A 00 00 00 00 ?
02400100 01 00 00 00 00 00 00 00 72 73 76 00 00 00 00 00 rsv
02400110 00 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 €
02400120 00 00 40 2D 00 00 00 00 01 00 00 00 00 00 00 00 @-
02400130 74 65 65 00 00 00 00 00 00 00 00 00 00 00 00 00 tee
02400140 00 00 80 00 00 00 00 00 00 00 40 2E 00 00 00 00 € @.
02400150 01 00 00 00 00 00 00 00 63 72 79 70 74 00 00 00 crypt
02400160 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00 00
02400170 00 00 40 2F 00 00 00 00 01 00 00 00 00 00 00 00 @/
02400180 6D 69 73 63 00 00 00 00 00 00 00 00 00 00 00 00 misc
02400190 00 00 00 02 00 00 00 00 00 00 C0 31 00 00 00 00 ?
024001A0 01 00 00 00 00 00 00 00 62 6F 6F 74 00 00 00 00 boot
024001B0 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00 00
024001C0 00 00 40 34 00 00 00 00 01 00 00 00 00 00 00 00 @4
024001D0 73 79 73 74 65 6D 00 00 00 00 00 00 00 00 00 00 system
024001E0 00 00 00 50 00 00 00 00 00 00 C0 36 00 00 00 00 P ?
024001F0 01 00 00 00 00 00 00 00 64 61 74 61 00 00 00 00 data
02400200 00 00 00 00 00 00 00 00 00 00 C0 4A 01 00 00 00 繨
02400210 00 00 40 87 00 00 00 00 04 00 00 00 00 00 00 00 @?
| block name mmcblk0p |
partition name Notes |
physical start offset hex |
start offset K/M/GiB |
partition size hex |
size K/M/GiB |
|---|---|---|---|---|---|
| 0 | mmcblk0 | 0x0 | 0 | 0x1d2000000 | 7.28125 G |
| 1 | bootloader | 0x0 | 0 | 0x400000 | 4 M |
| NA | safe gap | 0x400000 | 4 M | 0x2000000 | 32 M |
| 2 | reserved | 0x2400000 | 36 M | 0x4000000 | 64 M |
| NA | safe gap | 0x6400000 | 100 M | 0x800000 | 8 M |
| 3 | cache | 0x6c00000 | 108 M | 0x20000000 | 0.5 G |
| NA | safe gap | 0x26c00000 | 0x800000 | 8 M | |
| 4 | env bootargs, mac |
0x27400000 | 0.613 G | 0x800000 | 8 M |
| NA | safe gap | 0x27c00000 | 0x800000 | 8 M | |
| 5 | logo | 0x28400000 | 0.629 G | 0x2000000 | 32 M |
| NA | safe gap | 0x2a400000 | 0x800000 | 8 M | |
| 6 | recovery | 0x2ac00000 | 0.668 G | 0x2000000 | 32 M |
| NA | safe gap | 0x2cc00000 | 0x800000 | 8 M | |
| 7 | rsv | 0x2d400000 | 0.707 G | 0x800000 | 8 M |
| NA | safe gap | 0x2dc00000 | 0x800000 | 8 M | |
| 8 | tee | 0x2e400000 | 0.723 G | 0x800000 | 8 M |
| NA | safe gap | 0x2ec00000 | 0x800000 | 8 M | |
| 9 | crypt | 0x2f400000 | 0.738 G | 0x2000000 | 32 M |
| NA | safe gap | 0x31400000 | 0x800000 | 8 M | |
| 10 | misc | 0x31c00000 | 0.777 G | 0x2000000 | 32 M |
| NA | safe gap | 0x33c00000 | 0x800000 | 8 M | |
| 11 | boot | 0x34400000 | 0.816 G | 0x2000000 | 32 M |
| NA | safe gap | 0x36400000 | 0x800000 | 8 M | |
| 12 | system | 0x36c00000 | 0.855 G | 0x50000000 | 1.25 G |
| NA | safe gap | 0x86c00000 | 0x800000 | 8 M | |
| 13 | data | 0x87400000 0x1d2000000 |
2.113 G | 0x14ac00000 | 5.168 G |
| 96 | mmcblk0rpmb | 512 K | |||
| 32 | mmcblk0boot0 | 4 M | |||
| 64 | mmcblk0boot1 | 4 M |
- root password 31183118
p230:/ $ su Please enter password! 31183118
p230:/ # cat /proc/partitions
major minor #blocks name (1024 Byte=1KiB per block)
253 0 512000 zram0
179 0 7634944 mmcblk0
179 1 4096 mmcblk0p1
179 2 65536 mmcblk0p2
179 3 524288 mmcblk0p3
179 4 8192 mmcblk0p4
179 5 32768 mmcblk0p5
179 6 32768 mmcblk0p6
179 7 8192 mmcblk0p7
179 8 8192 mmcblk0p8
179 9 32768 mmcblk0p9
179 10 32768 mmcblk0p10
179 11 32768 mmcblk0p11
179 12 1310720 mmcblk0p12
179 13 5419008 mmcblk0p13
179 96 4096 mmcblk0rpmb
179 64 4096 mmcblk0boot1
179 32 4096 mmcblk0boot0
major minor #blocks name (1024 Byte=1KiB per block)
179 0 7634944 mmcblk0
179 1 4096 bootloader
179 2 65536 reserved
179 3 524288 cache
179 4 8192 env bootargs,mac
179 5 32768 logo
179 6 32768 recovery
179 7 8192 rsv NULL
179 8 8192 tee NULL
179 9 32768 crypt NULL
179 10 32768 misc NULL
179 11 32768 boot
179 12 1310720 system
179 13 5419008 data
179 96 4096 mmcblk0rpmb
179 64 4096 mmcblk0boot1
179 32 4096 mmcblk0boot0
- mmcblk0rpmb have diff size 4096 vs 512 ?
- from Telegram https://t.me/phicomm_n1
179 96 512 mmcblk0rpmb
- What are below 3 x parts?
- mmcblk1boot0
- mmcblk1boot1
- mmcblk1rpmb
- https://isolated.site/2019/06/06/use-single-partition-to-boot-linux-on-phicomm-n1/
- refs/use-single-partition-to-boot-linux-on-phicomm-n1.md
- https://www.digi.com/resources/documentation/digidocs/90001547/reference/bsp/v4-9_6ul/r_mmc-sd-sdio_6ul.htm
Note that the documentation is for ConnectCore 6UL SBC Pro, but the idea about eMMC remains the same.
offset.sh
Help you modify each emmc partiton
Usage: offset.sh [-d] partition
_bootloader="bootloader 0x000000000000 0x000000400000"
_reserved="reserved 0x000002400000 0x000004000000"
_cache="cache 0x000006c00000 0x000020000000"
_env="env 0x000027400000 0x000000800000"
_logo="logo 0x000028400000 0x000002000000"
_recovery="recovery 0x00002ac00000 0x000002000000"
_rsv="rsv 0x00002d400000 0x000000800000"
_tee="tee 0x00002e400000 0x000000800000"
_crypt="crypt 0x00002f400000 0x000002000000"
_misc="misc 0x000031c00000 0x000002000000"
_boot="boot 0x000034400000 0x000002000000"
_system="system 0x000036c00000 0x000050000000"
_data="data 0x000087400000 0x00014ac00000"
_all="bootloader reserved cache env logo recovery rsv tee crypt misc boot system data"
| Partition | used | all | unit | Notes |
|---|---|---|---|---|
| bootloader | 2 | 4 | MiB | keep all 4MiB for compatibility |
| reserved | 4.5 | 64 | MiB | keep 4.5 MiB 0x480000 data |
| env | 64K | 8 | MiB | keep 64 KiB 0x10000 data |
| logo | 8 | 32 | MiB | keep 32 MiB, not need for me |
- https://isolated.site/2019/06/06/use-single-partition-to-boot-linux-on-phicomm-n1/
- refs/use-single-partition-to-boot-linux-on-phicomm-n1.md
# Mark reserved regions as bad block to prevent Linux from using them.
# /dev/env: This "device" (present in Linux 3.x) uses 0x27400000 ~ +0x800000.
# It seems that they're overwritten each time system boots if value
# there is invalid. Therefore we must not touch these blocks.
#
# /dev/logo: This "device" uses 0x28400000~ +0x800000. You may mark them as
# bad blocks if you want to preserve or replace the boot logo.
#
# All other "devices" (i.e., `recovery`, `rsv`, `tee`, `crypt`, `misc`, `boot`,
# `system`, `data` should be safe to overwrite.)
MacOS extract zip/7z file and double click the *.img
diskutil list /dev/disk2
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme +1.7 GB disk2
1: Windows_FAT_16 BOOT 134.2 MB disk2s1
2: Linux 1.6 GB disk2s2
-
mount BOOT partition as BOOOT
diskutil unmount /Volumes/BOOT
-
mount ROOTFS
ext4fuse /dev/disk2s2 armbianbusterdiskutil unmount armbianbuster
-
copy script out
-
must su - root, mount rootfs
root# ls -l
total 40
-r--r--r-- 1 root wheel 3523 Jun 18 14:38 .bashrc
-r--r--r-- 1 root wheel 0 Jun 18 14:38 .desktop_autologin
-r--r--r-- 1 root wheel 0 Jun 18 14:38 .not_logged_in_yet
-r--r--r-- 1 root wheel 148 Aug 17 2015 .profile
-r--r--r-- 1 root wheel 261 Jun 18 14:41 fstab
-r-xr-xr-x 1 root wheel 3355 Jun 18 14:41 install-2018.sh
-r-xr-xr-x 1 root wheel 3296 Jun 18 14:41 install.sh
root# cat fstab
#/var/swap none swap sw 0 0
#/dev/root / auto noatime,errors=remount-ro 0 1
#proc /proc proc defaults 0 0
/dev/root / ext4 defaults,noatime,errors=remount-ro 0 1
tmpfs /tmp tmpfs defaults,nosuid 0 0
LABEL=BOOT_EMMC /boot vfat defaults 0 2
# cp install.sh ../../install.sh-Armbian_5.89_Aml-s905_Debian_buster_default_5.1.0_20190617.img
/usr/sbin/nand-sata-install link to /root/install.sh
armbianbuster root# file usr/bin/ddbr*
usr/bin/ddbr: Bourne-Again shell script text executable, ASCII text
usr/bin/ddbr_backup_nand: POSIX shell script text executable, ASCII text
usr/bin/ddbr_backup_nand_full: POSIX shell script text executable, ASCII text
usr/bin/ddbr_restore_nand: POSIX shell script text executable, ASCII text