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tools:retrobsd [2015/03/09 07:52] darron |
tools:retrobsd [2015/03/22 21:55] |
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| - | ==== RetroBSD ==== | ||
| - | <wrap right> | ||
| - | {{: | ||
| - | \\ \\ | ||
| - | {{: | ||
| - | </ | ||
| - | RetroBSD is an embedded version of 2.11BSD for PIC32 micro-controllers. | ||
| - | |||
| - | === Setup === | ||
| - | First we need to fetch a working cross-compiler. RetroBSD supports this one in Linux. | ||
| - | |||
| - | < | ||
| - | cd /usr/local | ||
| - | wget https:// | ||
| - | unzip pic32-tools-chipKIT-cxx-master-Linux32-image-20120720.zip | ||
| - | </ | ||
| - | |||
| - | === Checkout === | ||
| - | Now we fetch the RetroBSD source from GitHUB. | ||
| - | < | ||
| - | mkdir -p /embedded | ||
| - | cd /embedded | ||
| - | git clone https:// | ||
| - | cd retrobsd | ||
| - | </ | ||
| - | === Configure === | ||
| - | In this example we will configure RetroBSD for the [[: | ||
| - | |||
| - | First select the SDXL. | ||
| - | < | ||
| - | sed -i ' | ||
| - | </ | ||
| - | |||
| - | Now we will enable two UARTS. Edit the following file, | ||
| - | < | ||
| - | vi sys/ | ||
| - | </ | ||
| - | |||
| - | and add the following within the DEFS section, save the file. | ||
| - | < | ||
| - | DEFS += -DUART1_BAUD=115200 | ||
| - | DEFS += -DUART1_ENABLED=YES | ||
| - | DEFS += -DUART2_BAUD=115200 | ||
| - | DEFS += -DUART2_ENABLED=YES | ||
| - | </ | ||
| - | |||
| - | Now edit the kernel configuration to enable the devices. | ||
| - | < | ||
| - | vi sys/ | ||
| - | </ | ||
| - | |||
| - | Add the following options to enable the UARTS. | ||
| - | < | ||
| - | # tty0 | ||
| - | device uart1 baud=115200 | ||
| - | # tty1 | ||
| - | device uart2 baud=115200 | ||
| - | </ | ||
| - | |||
| - | |||
| - | === Build === | ||
| - | Building will create the unix boot image and the SDcard image for the system. | ||
| - | < | ||
| - | make cleanall | ||
| - | make | ||
| - | </ | ||
| - | |||
| - | === Install === | ||
| - | |||
| - | First we create the file system image on a micro SD card. | ||
| - | < | ||
| - | dd if=sdcard.img of=/dev/sdc bs=4M | ||
| - | </ | ||
| - | |||
| - | Next, Hold the PROG button and toggle RESET on the SDXL board to enter the boot laoder. We will use [[: | ||
| - | < | ||
| - | pload program / | ||
| - | Total: 157004 | ||
| - | Time: 0:08.45s | ||
| - | </ | ||
| - | |||
| - | ==== Test ==== | ||
| - | Connect with a terminal emulator to the virtual com port and press enter, the system should now boot. | ||
| - | < | ||
| - | screen / | ||
| - | </ | ||
| - | |||
| - | Enter the username root with an empty password to login. | ||
| - | < | ||
| - | |||
| - | 2.11 BSD Unix for PIC32, revision G205 build 2: | ||
| - | | ||
| - | / | ||
| - | cpu: 795F512H 80 MHz, bus 80 MHz | ||
| - | oscillator: external, PLL div 1:2 mult x20 | ||
| - | console: ttyUSB0 (6,0) | ||
| - | sd0: port SPI2, select pin G9 | ||
| - | sd0: type SDHC, size 3932160 kbytes, speed 13 Mbit/sec | ||
| - | phys mem = 128 kbytes | ||
| - | user mem = 96 kbytes | ||
| - | root dev = rd0a (0,1) | ||
| - | root size = 102400 kbytes | ||
| - | swap dev = rd0b (0,2) | ||
| - | swap size = 2048 kbytes | ||
| - | /dev/rd0a: 659 files, 10738 used, 91261 free | ||
| - | Starting daemons: update /var/cron: No such file or directory | ||
| - | /var/cron: created | ||
| - | tabs: No such file or directory | ||
| - | tabs: created | ||
| - | cron | ||
| - | |||
| - | |||
| - | 2.11 BSD UNIX (pic32) (console) | ||
| - | |||
| - | login: root | ||
| - | Password: | ||
| - | Welcome to RetroBSD! | ||
| - | erase, kill ^U, intr ^C | ||
| - | # ps axl | ||
| - | F S | ||
| - | 3 S | ||
| - | 200 S | ||
| - | 200 S | ||
| - | 200 S | ||
| - | 200 S | ||
| - | 1 R | ||
| - | # | ||
| - | </ | ||
