Modified from the original script from Armbian 5.67, credits to them. It seems that u-boot on Phicomm N1 hardcoded 0x27400000 for reading / storing its environment variables, and is overwrittenContinue reading
I’m still not clear why but Armbian on Phicomm N1 was unable to get the factory set MAC address. Instead, it uses a random address each time it boots. ToContinue reading
The script install.sh shipped with Armbian works well. But if we’re willing to sacrifice the boot logo, the first partition can starts at offset 128M, instead of 700M as usedContinue reading
Found at offset 0x2400000 of /dev/mmcblk1:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | 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 @? |
Looks like it’s using format below:
1 2 3 4 5 6 7 8 9 10 11 | 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? |
Found some code about this: Structure definition of partitions (and mask?), The partition table structure. IContinue reading
Dump logo from /dev/logo: dd if=/dev/logo of=logo.dmp bs=1M. Unpack dumped partition using aml-imgpack. But note that all opens need to be fixed. The original author uses text mode to manipulateContinue reading
Update: I suggest to use this script instead if you care about (a bit) more free disk space and/or want to change the box’s boot splash image. From GitHub, slightlyContinue reading
This does not always happen, but rather probabilistic. I suspect that dhcp6c crashes (or more likely, killed by ddwrt) after PPPoE reconnect, but somehow leaves radvd alive. It seems thatContinue reading
At the first glance I was thinking it’s a bug in my router or it could be some obsolete data that has not been purged:
1 2 3 4 5 6 7 | ppp0 Link encap:Point-to-Point Protocol inet6 addr: 2001:db8:1234:5678::abcd/64 Scope:Global [...] br0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet6 addr: 2001:db8:1234:5688::1234:0/64 Scope:Global [...] |
But it isn’t. TheContinue reading
After reinitialized my VPS, WordPress’s iOS app starts to keep reporting “parse error. not well formed”. I once thought this was caused by my too constrained TLS cipher suites asContinue reading
Setting an MX DNS record First of all, for a domain like @example.org to be able to receive mails, an MX record is need. I just added a MX recordContinue reading