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exoberry's Introduction

Exoberry

What is Exoberry?

Exoberry is an exokernel written for the Raspberry Pi 3.

How to Install

To install Exoberry you will need

  • Raspbery Pi 3 Model B
  • USB to TTL serial cable
  • SD card with installed Raspbian OS (2017 Version)
  • The Exoberry image either built from source or downloaded from releases.
  1. Copy kernel8.img file to the boot partition of your Raspberry Pi flash card and delete the other kernel*.img files on your SD card.

  2. Put the following lines in config.txt

    kernel_old=1
    disable_commandline_tags=1
  3. Connect the USB-to-TTL serial cable

  4. Power on your Raspberry Pi

Building from Source

git clone https://github.com/MutexUnlocked/exoberry.git
cd exoberry
make

You should now see the kernel image in your current directory.

Credits

exoberry's People

Contributors

friedy10 avatar na-g avatar zephyr1x avatar

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exoberry's Issues

Planning Area

I am doing a free operating system called DEOS.

The exokernel concept is a compromise: let the kernel allocate the basic physical resources of the machine (e.g. disk blocks, memory pages, and processor time) to multiple application programs, and let each program decide what to do with these resources. The program can then link to a support library that implements the abstractions it needs (or it can implement its own). There doesen't seem to be any commerical operating systems that use an exokernel.

I plan on adding an emulator for maybe BSD or another Unix-like operating system. Right now it is just a basic kernel with transport layer and Internet layer protocols.

Let's start of the year with something great hope you can all help! Post questions, ideas, etc. here.

DEOS fails with exit 1

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--recv
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127.0.0.1	localhost
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�[0Ktravis_time:start:01f35e62
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Cloning into 'friedrich12/DEOS'...
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remote: Compressing objects:  55% (71/128)   �[K
remote: Compressing objects:  56% (72/128)   �[K
remote: Compressing objects:  57% (73/128)   �[K
remote: Compressing objects:  58% (75/128)   �[K
remote: Compressing objects:  59% (76/128)   �[K
remote: Compressing objects:  60% (77/128)   �[K
remote: Compressing objects:  61% (79/128)   �[K
remote: Compressing objects:  62% (80/128)   �[K
remote: Compressing objects:  63% (81/128)   �[K
remote: Compressing objects:  64% (82/128)   �[K
remote: Compressing objects:  65% (84/128)   �[K
remote: Compressing objects:  66% (85/128)   �[K
remote: Compressing objects:  67% (86/128)   �[K
remote: Compressing objects:  68% (88/128)   �[K
remote: Compressing objects:  69% (89/128)   �[K
remote: Compressing objects:  70% (90/128)   �[K
remote: Compressing objects:  71% (91/128)   �[K
remote: Compressing objects:  72% (93/128)   �[K
remote: Compressing objects:  73% (94/128)   �[K
remote: Compressing objects:  74% (95/128)   �[K
remote: Compressing objects:  75% (96/128)   �[K
remote: Compressing objects:  76% (98/128)   �[K
remote: Compressing objects:  77% (99/128)   �[K
remote: Compressing objects:  78% (100/128)   �[K
remote: Compressing objects:  79% (102/128)   �[K
remote: Compressing objects:  80% (103/128)   �[K
remote: Compressing objects:  81% (104/128)   �[K
remote: Compressing objects:  82% (105/128)   �[K
remote: Compressing objects:  83% (107/128)   �[K
remote: Compressing objects:  84% (108/128)   �[K
remote: Compressing objects:  85% (109/128)   �[K
remote: Compressing objects:  86% (111/128)   �[K
remote: Compressing objects:  87% (112/128)   �[K
remote: Compressing objects:  88% (113/128)   �[K
remote: Compressing objects:  89% (114/128)   �[K
remote: Compressing objects:  90% (116/128)   �[K
remote: Compressing objects:  91% (117/128)   �[K
remote: Compressing objects:  92% (118/128)   �[K
remote: Compressing objects:  93% (120/128)   �[K
remote: Compressing objects:  94% (121/128)   �[K
remote: Compressing objects:  95% (122/128)   �[K
remote: Compressing objects:  96% (123/128)   �[K
remote: Compressing objects:  97% (125/128)   �[K
remote: Compressing objects:  98% (126/128)   �[K
remote: Compressing objects:  99% (127/128)   �[K
remote: Compressing objects: 100% (128/128)   �[K
remote: Compressing objects: 100% (128/128), done.�[K
Receiving objects:   0% (1/256)   
Receiving objects:   1% (3/256)   
Receiving objects:   2% (6/256)   
Receiving objects:   3% (8/256)   
Receiving objects:   4% (11/256)   
Receiving objects:   5% (13/256)   
Receiving objects:   6% (16/256)   
Receiving objects:   7% (18/256)   
Receiving objects:   8% (21/256)   
Receiving objects:   9% (24/256)   
Receiving objects:  10% (26/256)   
Receiving objects:  11% (29/256)   
Receiving objects:  12% (31/256)   
Receiving objects:  13% (34/256)   
Receiving objects:  14% (36/256)   
Receiving objects:  15% (39/256)   
Receiving objects:  16% (41/256)   
Receiving objects:  17% (44/256)   
Receiving objects:  18% (47/256)   
Receiving objects:  19% (49/256)   
Receiving objects:  20% (52/256)   
Receiving objects:  21% (54/256)   
Receiving objects:  22% (57/256)   
Receiving objects:  23% (59/256)   
Receiving objects:  24% (62/256)   
Receiving objects:  25% (64/256)   
Receiving objects:  26% (67/256)   
Receiving objects:  27% (70/256)   
Receiving objects:  28% (72/256)   
Receiving objects:  29% (75/256)   
Receiving objects:  30% (77/256)   
Receiving objects:  31% (80/256)   
Receiving objects:  32% (82/256)   
Receiving objects:  33% (85/256)   
Receiving objects:  34% (88/256)   
Receiving objects:  35% (90/256)   
Receiving objects:  36% (93/256)   
Receiving objects:  37% (95/256)   
Receiving objects:  38% (98/256)   
Receiving objects:  39% (100/256)   
Receiving objects:  40% (103/256)   
Receiving objects:  41% (105/256)   
Receiving objects:  42% (108/256)   
Receiving objects:  43% (111/256)   
Receiving objects:  44% (113/256)   
Receiving objects:  45% (116/256)   
Receiving objects:  46% (118/256)   
Receiving objects:  47% (121/256)   
Receiving objects:  48% (123/256)   
Receiving objects:  49% (126/256)   
Receiving objects:  50% (128/256)   
Receiving objects:  51% (131/256)   
Receiving objects:  52% (134/256)   
Receiving objects:  53% (136/256)   
Receiving objects:  54% (139/256)   
Receiving objects:  55% (141/256)   
Receiving objects:  56% (144/256)   
Receiving objects:  57% (146/256)   
Receiving objects:  58% (149/256)   
Receiving objects:  59% (152/256)   
Receiving objects:  60% (154/256)   
Receiving objects:  61% (157/256)   
Receiving objects:  62% (159/256)   
Receiving objects:  63% (162/256)   
Receiving objects:  64% (164/256)   
Receiving objects:  65% (167/256)   
Receiving objects:  66% (169/256)   
Receiving objects:  67% (172/256)   
Receiving objects:  68% (175/256)   
Receiving objects:  69% (177/256)   
Receiving objects:  70% (180/256)   
Receiving objects:  71% (182/256)   
Receiving objects:  72% (185/256)   
Receiving objects:  73% (187/256)   
Receiving objects:  74% (190/256)   
Receiving objects:  75% (192/256)   
Receiving objects:  76% (195/256)   
Receiving objects:  77% (198/256)   
Receiving objects:  78% (200/256)   
Receiving objects:  79% (203/256)   
Receiving objects:  80% (205/256)   
Receiving objects:  81% (208/256)   
remote: Total 256 (delta 53), reused 108 (delta 22), pack-reused 100�[K
Receiving objects:  82% (210/256)   
Receiving objects:  83% (213/256)   
Receiving objects:  84% (216/256)   
Receiving objects:  85% (218/256)   
Receiving objects:  86% (221/256)   
Receiving objects:  87% (223/256)   
Receiving objects:  88% (226/256)   
Receiving objects:  89% (228/256)   
Receiving objects:  90% (231/256)   
Receiving objects:  91% (233/256)   
Receiving objects:  92% (236/256)   
Receiving objects:  93% (239/256)   
Receiving objects:  94% (241/256)   
Receiving objects:  95% (244/256)   
Receiving objects:  96% (246/256)   
Receiving objects:  97% (249/256)   
Receiving objects:  98% (251/256)   
Receiving objects:  99% (254/256)   
Receiving objects: 100% (256/256)   
Receiving objects: 100% (256/256), 2.27 MiB | 24.95 MiB/s, done.
Resolving deltas:   0% (0/78)   
Resolving deltas:   1% (1/78)   
Resolving deltas:   2% (2/78)   
Resolving deltas:   8% (7/78)   
Resolving deltas:  15% (12/78)   
Resolving deltas:  19% (15/78)   
Resolving deltas:  28% (22/78)   
Resolving deltas:  29% (23/78)   
Resolving deltas:  30% (24/78)   
Resolving deltas:  37% (29/78)   
Resolving deltas:  38% (30/78)   
Resolving deltas:  41% (32/78)   
Resolving deltas:  48% (38/78)   
Resolving deltas:  52% (41/78)   
Resolving deltas:  55% (43/78)   
Resolving deltas:  58% (46/78)   
Resolving deltas:  60% (47/78)   
Resolving deltas:  61% (48/78)   
Resolving deltas:  62% (49/78)   
Resolving deltas:  64% (50/78)   
Resolving deltas:  66% (52/78)   
Resolving deltas:  74% (58/78)   
Resolving deltas:  75% (59/78)   
Resolving deltas:  76% (60/78)   
Resolving deltas:  78% (61/78)   
Resolving deltas:  79% (62/78)   
Resolving deltas:  80% (63/78)   
Resolving deltas:  82% (64/78)   
Resolving deltas: 100% (78/78)   
Resolving deltas: 100% (78/78), done.

travis_time:end:01f35e62:start=1515366604092678781,finish=1515366606007910724,duration=1915231943
�[0K$ cd friedrich12/DEOS
$ git checkout -qf 2e941d7d1f4cf2ef6d8d76f835950883c4c1ce31
travis_fold:end:git.checkout
�[0K$ export CC=gcc
$ gcc --version
gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

travis_time:start:0b52c12f
�[0K$ make
***
*** Error: Couldn't find a working QEMU executable.
*** Is the directory containing the qemu binary in your PATH
*** or have you tried setting the QEMU variable in conf/env.mk?
***
***
*** Error: Couldn't find a working QEMU executable.
*** Is the directory containing the qemu binary in your PATH
*** or have you tried setting the QEMU variable in conf/env.mk?
***
+ as kern/entry.S
+ cc kern/entrypgdir.c
+ cc kern/init.c
+ cc kern/console.c
+ cc kern/monitor.c
+ cc kern/printf.c
+ cc kern/kdebug.c
+ cc lib/printfmt.c
+ cc lib/readline.c
+ cc lib/string.c
+ ld obj/kern/kernel
obj/kern/printfmt.o: In function `printnum':
lib/printfmt.c:41: undefined reference to `__udivdi3'
lib/printfmt.c:49: undefined reference to `__umoddi3'
make: *** [obj/kern/kernel] Error 1

travis_time:end:0b52c12f:start=1515366613299648285,finish=1515366613693245972,duration=393597687
�[0K
�[31;1mThe command "make" exited with 2.�[0m

Done. Your build exited with 1.

This might be able to help with the problem.
These functions return the negation of a.

Runtime Function: unsigned int __udivsi3 (unsigned int a, unsigned int b)
Runtime Function: unsigned long __udivdi3 (unsigned long a, unsigned long b)
Runtime Function: unsigned long long __udivti3 (unsigned long long a, unsigned long long b)

Problem with printnum in lib/printfmt.c

$ make
+ as kern/entry.S
+ cc kern/entrypgdir.c
+ cc kern/init.c
+ cc kern/console.c
+ cc kern/monitor.c
+ cc kern/printf.c
+ cc kern/kdebug.c
+ cc lib/printfmt.c
+ cc lib/readline.c
+ cc lib/string.c
+ ld obj/kern/kernel
obj/kern/printfmt.o: In function `printnum':
lib/printfmt.c:41: undefined reference to `__udivdi3'
lib/printfmt.c:50: undefined reference to `__umoddi3'
make: *** [obj/kern/kernel] Error 1

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