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Author SHA1 Message Date
Daniel Barlow
151dc88c28 little evidence of thinking 2023-04-23 21:24:37 +01:00
Daniel Barlow
2f3b108ef1 tftpboot: set phram erase block size to match hardware 
this is needed for tftp boot with a jffs2 filesystem
 2023-04-23 21:24:37 +01:00
Daniel Barlow
6adab44fcf rotuer; run chronyd for accurate time 2023-04-23 20:56:20 +01:00
Daniel Barlow
4342d3403f make rotuer example build again 2023-04-23 20:56:20 +01:00
Daniel Barlow
28264febdb add smaller-than-gnu "hello world" package 2023-04-23 20:56:20 +01:00
Daniel Barlow
2c4f8b823e remove jffs2boot target 
It's not needed now initramfs is compiled into the kernel.
 2023-04-23 20:56:20 +01:00
Daniel Barlow
3595e36294 workaround for huge musl binaries 
something in our configuration is causing gcc to generate binaries
in excess of 68K for "hello world". hardeningDisable seems to stop it
doing that, turning it on for s6 which writes _lots_ of binaries
but would be good to get to the bottom of this

https://discourse.nixos.org/t/crosscompilation-to-musl32-problems/3110
may have more
 2023-04-22 23:04:03 +01:00
Daniel Barlow
245bf534e6 refactor: inline definition 2023-04-22 23:03:36 +01:00
Daniel Barlow
3feb8eb5f9 shrink hostap, build it without openssl 2023-04-22 22:17:35 +01:00
Daniel Barlow
c7aa8c7756 some notes on how we couldn't make it smaller 2023-04-19 22:03:18 +01:00
Daniel Barlow
c6b8a8488f build s6 with shared libraries 2023-04-19 21:44:06 +01:00
Daniel Barlow
99af416e14 use /bin/sh for init scripts 2023-04-19 21:41:05 +01:00
Daniel Barlow
ad3ef53171 ntp: don't install manpages, docs etc 2023-04-18 23:57:15 +01:00
Daniel Barlow
65dfbad365 systemconfig: chown files if uid/gid > 0 2023-04-15 22:53:28 +01:00
Daniel Barlow
5dd0c6e3c0 rewrite preinit as very small C program 
By using the kernel "nolibc" header to avoid requiring a C library, we
can bring the initramfs size to around 4k

This does involve a tiny bit of inline mips assembly which I'm not
sure about. gcc seems unwilling to generate the code to load $gp at
function entry of main(), so we do it by hand - but I'd rather find
out why gcc doesn't.
 2023-04-15 18:27:39 +01:00
Daniel Barlow
b1a89ae8c3 jffs2: squash uids, enable lzo compression 2023-04-15 17:23:58 +01:00
Daniel Barlow
11f2715d18 mips-vm: enlarge mtd 2023-04-15 17:22:35 +01:00
Daniel Barlow
1cc0b13b57 rewrite systemconfig in C and link statically 
systemconfig (a.k.a "activate") is run from the initramfs. Converting
it from a shell script to an executable means it doesn't depend on
there being a shell in the initramfs
 2023-04-15 17:21:27 +01:00
Daniel Barlow
c744ef8c17 systemconfig: accept uid and gid options 
all we do with them is assert they're zero, to unbreak CI.
This code is getting rewritten anyway
 2023-04-14 23:19:56 +01:00
Brian McKenna
fb796e61e0 pseudofile: allow setting uid and gid of files 
Necessary for Dropbear to accept non-root authorized_keys files.
 2023-04-14 23:12:52 +01:00
Daniel Barlow
9f3c80e774 make initramfs busybox (very slightly) smaller 2023-04-11 23:08:02 +01:00
Daniel Barlow
29c7af5892 set qemu flash erase block size 2023-04-10 22:57:51 +01:00
Daniel Barlow
2566dc564c remove need for symlinks in initramfs busybox 2023-04-10 22:57:50 +01:00
Daniel Barlow
0ad7b0e48b don't hardcode mtd0 initramfs->second stage 2023-04-10 22:57:50 +01:00
Daniel Barlow
0a2881914b set erase block size to something that works for jffs2 2023-04-10 22:57:50 +01:00
Daniel Barlow
4638092d3d build initramfs into kernel 
this doesn't matter for qemu, but there's no other way of
getting a hardware device to find it if the bootloader
won't co-operate
 2023-04-10 22:57:50 +01:00
Daniel Barlow
633a4f8003 move BLK_DEV_INITRD to base.nix 2023-04-10 22:57:50 +01:00
Daniel Barlow
fe99abc450 shrink rsync 
remove openssl requirement, it  uses it for "optimised assembly
versions" of md5 - but only on x86/arm/sparc not mips anyway
 2023-04-10 22:57:50 +01:00
Daniel Barlow
42725f56f9 make jffs2 module provide o.rootfs, conditionally 
it's enabled if config.rootfsType == "jffs2"
 2023-04-10 20:01:58 +01:00
Daniel Barlow
63a89f7d0d add config.boot.initramfs.enable 2023-04-10 19:07:27 +01:00
Daniel Barlow
07eb3d66da remove unused combined-image output 2023-04-10 18:15:48 +01:00
Daniel Barlow
0687ae7f5c rename flashable->flashimage, o.squashfs to rootfs 
"rootfs" describes what it is for, "squashfs" merely says
how it's implemented

(also, rootfs-as-jffs2 will soon be added)
 2023-04-10 18:13:27 +01:00
Daniel Barlow
2e15acd61c whitespace 2023-04-10 17:46:39 +01:00
Daniel Barlow
18b35b1ca6 thinking ... 2023-04-10 17:36:00 +01:00
Daniel Barlow
f5156425a2 correct jffs2 endian, remove unused bindings 2023-04-07 09:39:47 +01:00
Daniel Barlow
db54c877d6 add CI test for jffs2 2023-04-06 20:58:26 +01:00
Daniel Barlow
54a1ab3529 support jffs2, with initramfs 
the jffs2 filesystem contains only /nix/store and a script which is
run in early init (initramfs) and is responsible for recreating
"traditional" directories (/bin /etc/**/* /var &c) based on the
configuration.

this is tested only in qemu so far and could use some cleanup
 2023-04-04 23:35:49 +01:00
Daniel Barlow
25d9da967c remove support for sockets in pseudofiles 
(1) we can't make them on a real filesystem except by running
something that calls socket()
(2) whyever would we want to?
 2023-04-04 23:23:22 +01:00
Daniel Barlow
aa1a2e5d75 package gen_init_cpio, tool for making an initramfs 2023-04-04 22:54:20 +01:00
Daniel Barlow
f02efa3fe3 refactor 2023-04-04 21:11:28 +01:00
Daniel Barlow
342c87b256 qemu: boot from mtd using mtd2block 
doesn't make much difference for squashfs but this will make it much
simpler to test jffs2/ubifs
 2023-04-04 21:07:02 +01:00
Daniel Barlow
07e7d63ade fixup 98243d43da 2023-04-02 18:46:27 +01:00
Daniel Barlow
3194262eb3 it has not been a production-ready week 2023-03-31 23:44:49 +01:00
Daniel Barlow
98243d43da add mtdutils mkfs.jffs2 --graft option 
we'd like a bit more of the convenience of mksquashfs
(never thought I'd say _that_) for jffs2, in particular
not having to copy all the desired store paths into a
single directory just so we can create an image from them
 2023-03-31 23:42:13 +01:00
Daniel Barlow
e0bd64b80f week source 2023-03-28 16:14:00 +01:00
Daniel Barlow
a5630c1f30 add cautionary note about flashing a running device 2023-03-26 10:21:36 +01:00
Daniel Barlow
a172180be8 don't set lua5_3 in overlay 
sphinx depends on lua5_3, so overriding it globally means rebuilding
that - which isn't really necessary
 2023-03-24 23:43:13 +00:00
Daniel Barlow
608d750b60 describe how to flash Liminix, and kexecboot 2023-03-24 23:39:06 +00:00
Daniel Barlow
f5a7b78679 rename kexec-tools-static 
it doesn't build natively on x86-64 and I don't suppose we need it to
anyway
 2023-03-24 20:51:46 +00:00
Daniel Barlow
3608cc5e33 add kenrel command line cookie to mips-vm script 2023-03-24 18:48:38 +00:00