Commit Graph

85 Commits

Author SHA1 Message Date
Kevin Lange
0a08fa257e Partition mappings 2014-03-16 18:39:03 -07:00
Kevin Lange
013939fbc3 New ext2 module 2014-03-16 13:30:25 -07:00
Kevin Lange
984fa1d4c6 EXT2 backed by block device
WARNING: THIS BREAKS PARTITIONS

Until I get partition maps and can produce device entries like
/dev/hda1, partitions will be broken, so DON'T TRY TO BUILD AN IMAGE
WITH THE IMAGE BUILDER.

Hopefully this is all rectified in under 24 hours...
2014-03-16 01:33:01 -07:00
Kevin Lange
1ccd39de5c kill kprint_to_screen 2014-03-15 23:56:10 -07:00
Kevin Lange
b46d632116 serial, null, zero to modules 2014-03-15 19:48:51 -07:00
Kevin Lange
91767bcc69 Debug shell as a module 2014-03-14 23:17:59 -07:00
Kevin Lange
e9e892bae5 Unresolved symbol handling 2014-03-12 00:18:55 -07:00
Kevin Lange
ed03c517ad More real module loading
Still need to do proper loading of the ELF sections somewhere, but other
than that, we've got a standard interface now. Needs a syscall so we can
write an insmod or something like that.
2014-03-11 23:56:08 -07:00
Kevin Lange
c67d054526 Actually need to handle these as errors, but let's just be safe. 2014-03-11 07:59:00 -07:00
Kevin Lange
be7dc6fb17 Support more relocation methods 2014-03-09 23:01:30 -07:00
Kevin Lange
1389916cba quick cleanup 2014-03-09 22:37:49 -07:00
Kevin Lange
c051fe7ee1 First module load! 2014-03-09 22:31:34 -07:00
Kevin Lange
cc4391d783 Initial work on modules
There's a lot here, so let's through it:
- Lots of work to include a symbol table in the kernel. We can't rely on
  our bootloader to give us our own ELF information, so we do this
  separately. This probably should be changed to output a C source
  rather than assembly, but that's a TODO.
- Makefile can now generate modules. It works basically the same way any
  other kernel object works, expect with a slightly different linking
  scheme.
- Commands have been added to the debug shell to load modules, but they
  don't work yet - still need to get through relocation and linking.
- Commands have been added to the debug shell to print the symbol list,
  as well as print symbol values (but note that printing symbol values
  is kinda dangerous if you don't know what they are, so don't just go
  printing things willy-nilly).
2014-03-09 19:36:28 -07:00
Kevin Lange
d42617020f random rtl network stuff, not working yet 2014-02-26 21:00:16 -08:00
Kevin Lange
3749c6e954 more debug shell socket stuff 2014-01-14 21:21:33 -08:00
Kevin Lange
18f3f54494 kinda silly, but whatever 2014-01-10 00:45:59 -08:00
Kevin Lange
f5be45a2c9 lots of legacy cleanup 2013-12-15 21:33:46 -08:00
Kevin Lange
6629eed64a debug shell cleanup 2013-12-14 13:47:18 -08:00
Kevin Lange
ebe1c24dbd Some sort of PCI subsystem, maybe 2013-12-12 23:40:52 -08:00
Kevin Lange
ee978f3dbe Fix freeing keys, add another test 2013-12-01 23:50:13 -08:00
Kevin Lange
902b0342b9 Add some more hashmap functions
And port kernel console command lookup to use a hashmap.
2013-12-01 23:29:40 -08:00
Kevin Lange
26cfa78f89 Use hashmap for args
There, now it's fast.
2013-12-01 21:22:06 -08:00
Kevin Lange
a376ab2563 Fix some weirdness 2013-12-01 20:07:31 -08:00
Kevin Lange
56ad9598d0 New kernel args parser
I know, this is a lot slower than the old one, but it's a transition to
a new-new args parser that will use a hashmap... as soon as I get around
to writing a hashmap implementation.
2013-12-01 19:37:22 -08:00
Kevin Lange
1cbd26689b Some FS navigation in the debug console
Since I'm working on VFS rewrites...
2013-11-30 22:27:45 -08:00
Kevin Lange
89cb3c8dbd A reasonable shell command system 2013-11-30 00:09:04 -08:00
Kevin Lange
382a24adb8 Fix run-config to work with serial tty 2013-11-28 15:58:57 -08:00
Kevin Lange
2978d31461 Unrecognized command 2013-11-27 22:47:05 -08:00
Kevin Lange
283ac3c824 Add some tokenizing 2013-11-27 22:41:27 -08:00
Kevin Lange
8c469883bc Wrap serial console in a TTY 2013-11-27 22:24:58 -08:00
Kevin Lange
3c9a717429 Tasklet cleanups, make kttydebug useful 2013-11-27 21:21:39 -08:00
Kevin Lange
10f4cc6811 Tasklets; fix dead sleep; kernel serial console
- Tasklets are essentially kernel threads. Still working on passing
  arguments to them, but they essentially just run functions and have
  special names like [[kttydebug]]. Eventually, I want disk scheduling
  and various (non-interrupt-driven) drivers running on these, but I'm
  still not sure how stable they are.
- Fix the scheduler so it supports not having anything to run. This took
  some tracking of what's running, and then inserting some liberal
  sleeps. Doesn't appear to break anything. Makes the system work when
  you try to sleep with only one process "running", so that's good.
- Start working on reimplementing the old kernel shell, but this time as
  a tasklet running in the background over serial. Probably going to try
  to add all the same features as before (tab completion, history, rich
  editing), but it may take some time to get it all in there. This
  console is mostly focused on helping with debugging EXT2 and other
  future stuff.
2013-11-27 19:11:58 -08:00
Kevin Lange
1dde9dfcb5 Fix argv storage for init 2013-06-06 18:29:22 -07:00
Kevin Lange
0f344f2900 Rewrite fork/clone.
This is still a bit ugly, needs cleanup.
Fixes that weird GCC issue.
2013-06-06 18:04:13 -07:00
Kevin Lange
e70ebf8857 Big fat cleanup and GCC fix batch 2013-06-05 23:10:36 -07:00
Kevin Lange
ae08c74115 I'll stop the world and melt with you
(but I won't stop the world to load binaries)
2013-05-22 01:34:56 -07:00
Kevin Lange
ade59a11bc XXX ABI BREAKING CHANGE - New load/heap/stack/shm
Address for program loading, kernel heap, userspace SHM regions, and
stacks have been changed.

Delete:
  toolchain/build
  toolchain/local
  .userspace_check

Run:
  python userspace/build.py clean
  make clean-disk
  make clean
  ./build.sh
2013-04-21 17:35:03 -07:00
Kevin Lange
6f94ce2296 procfs extensions and ps command 2013-03-18 21:52:45 -07:00
Kevin Lange
71342f842d procfs, and more pty cleanup 2013-03-18 00:52:12 -07:00
Kevin Lange
3ca94a0528 fix unsigned/signed compare 2012-12-07 19:29:54 -08:00
Kevin Lange
a5b00112af Add tick counts 2012-12-07 19:06:43 -08:00
Kevin Lange
a9d895a923 unify logging 2012-12-07 18:33:07 -08:00
Kevin Lange
f5b5b8821d Clean up some minor bits and pieces. 2012-12-04 20:09:06 -08:00
Kevin Lange
50ea1462c3 Fix IDE on new qemu, virtualbox 2012-12-02 21:43:54 -08:00
Kevin Lange
ed5b9543fb Big commit: Serial console
* fix some terminal bugs (some, not all)
* add a serial device to the VFS
* fix up serial so it works better
* add a serial-console application
* fix a bug in some other stuff relating to allocations
* change size of the terminal described by toaru.terminfo
* adds a new system call
2012-11-28 23:05:19 -08:00
Kevin Lange
deaa6ad513 Rough support for environment variables
- libc functions not implemented yet
- see `env` for an example of reading variables
- see `esh` for an example of how to set and maintain variables for
  sending to other applications

  Both of the above will be the basis for the libc implementation.
2012-10-07 20:46:35 -07:00
Kevin Lange
77ed41c225 kernel vga term, commas in arguments, ide fixes 2012-10-03 22:03:21 -07:00
Kevin Lange
2eb953f1f1 Massive fixes to the EXT2 driver.
* Works with different block sizes
* Works with different inode sizes
* Tested on a real EXT2 file system made with mkfs.ext2

* MBR reading is available
* You can specify a partition with hdd=0 or hdd=1 etc.

* If you make a "real" disk image, you can get GRUB installed in
  its MBR, toss in a suitable config file, and boot right off the
  disk rather than having to use QEMU to boot the kernel or using
  some silly CDROM ramdisk nonsense.
2012-09-29 00:39:01 -07:00
Kevin Lange
57534cf009 Fix things up to prepare a working ramdisk. 2012-09-18 00:06:32 -07:00
Kevin Lange
777b442a1e Finish rename of bochs driver to lfb driver.
* Removed some deprecated header stuff.
* Renamed functions / global variables.
2012-09-17 22:46:43 -07:00