{"id":7233,"date":"2018-02-03T12:33:38","date_gmt":"2018-02-03T12:33:38","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=7233"},"modified":"2018-03-08T14:16:15","modified_gmt":"2018-03-08T14:16:15","slug":"raspberry-pi-3-boot-options-in-bootconfig-txt","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=7233","title":{"rendered":"Raspberry Pi 3, Boot options in \/boot\/config.txt"},"content":{"rendered":"<p><a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/config-txt\/\">documentation > configuration > config-txt<\/a><\/p>\n<ul>\n<li>Memory<\/li>\n<li>Licence Keys\/Codecs<\/li>\n<li>Video\/Display<\/li>\n<li>Audio<\/li>\n<li>Camera<\/li>\n<li>Boot<\/li>\n<li>Ports and Device Tree<\/li>\n<li>Overclocking<\/li>\n<li>Conditional Filters<\/li>\n<li>Miscellaneous<\/li>\n<\/ul>\n<p>=<\/p>\n<ul>\n<li>Videocore GPU (VC4)<\/li>\n<\/ul>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n $ ls -la \/boot\r\ntotal 21059\r\ndrwxr-xr-x  3 root root    2560 Jan  1  1970 .\r\ndrwxr-xr-x 21 root root    4096 Nov 29 02:37 ..\r\n-rwxr-xr-x  1 root root   15830 Oct 30 10:36 bcm2708-rpi-0-w.dtb\r\n-rwxr-xr-x  1 root root   15367 Oct 30 10:36 bcm2708-rpi-b.dtb\r\n-rwxr-xr-x  1 root root   15626 Oct 30 10:36 bcm2708-rpi-b-plus.dtb\r\n-rwxr-xr-x  1 root root   15086 Oct 30 10:36 bcm2708-rpi-cm.dtb\r\n-rwxr-xr-x  1 root root   16693 Oct 30 10:36 bcm2709-rpi-2-b.dtb\r\n-rwxr-xr-x  1 root root   17794 Oct 30 10:36 bcm2710-rpi-3-b.dtb\r\n-rwxr-xr-x  1 root root   16550 Oct 30 10:36 bcm2710-rpi-cm3.dtb\r\n-rwxr-xr-x  1 root root   50248 Aug 11 17:03 bootcode.bin\r\n-rwxr-xr-x  1 root root     142 Jan  1  1980 cmdline.txt\r\n-rwxr-xr-x  1 root root    1627 Feb  1 17:00 config.txt\r\n-rwxr-xr-x  1 root root   18693 Aug 21  2015 COPYING.linux\r\n-rwxr-xr-x  1 root root    2578 Oct 30 10:36 fixup_cd.dat\r\n-rwxr-xr-x  1 root root    6551 Oct 30 10:36 fixup.dat\r\n-rwxr-xr-x  1 root root    9694 Oct 30 10:36 fixup_db.dat\r\n-rwxr-xr-x  1 root root    9694 Oct 30 10:36 fixup_x.dat\r\n-rwxr-xr-x  1 root root     145 Nov 29 02:37 issue.txt\r\n-rwxr-xr-x  1 root root 4579632 Oct 30 10:36 kernel7.img\r\n-rwxr-xr-x  1 root root 4379152 Oct 30 10:36 kernel.img\r\n-rwxr-xr-x  1 root root    1494 Nov 18  2015 LICENCE.broadcom\r\n-rwxr-xr-x  1 root root   18974 Nov 29 02:37 LICENSE.oracle\r\ndrwxr-xr-x  2 root root   10240 Nov 29 01:21 overlays\r\n-rwxr-xr-x  1 root root  667460 Oct 30 10:36 start_cd.elf\r\n-rwxr-xr-x  1 root root 4956676 Oct 30 10:36 start_db.elf\r\n-rwxr-xr-x  1 root root 2820196 Oct 30 10:36 start.elf\r\n-rwxr-xr-x  1 root root 3904228 Oct 30 10:36 start_x.elf\r\n<\/pre>\n<p><a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/config-txt\/boot.md\">Boot options in config.txt<\/a><\/p>\n<h4><code>enable_uart=1<\/code><\/h4>\n<p><a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/uart.md\">The Raspberry Pi UARTs<\/a><\/p>\n<h4><code>start_x=1<\/code><\/h4>\n<p><code>start_x=1<\/code> should be specified when using the camera module.<br \/>\n<a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/config-txt\/boot.md\"><\/a><\/p>\n<h4><code>gpu_mem=128<\/code><\/h4>\n<p>GPU memory in megabytes. This sets the memory split between the CPU and GPU; the CPU gets the remaining memory. Minimum value is 16; maximum value is 192, 448, or 944, depending on whether you are using a 256M, 512MB, or 1024MB Pi.<br \/>\n<a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/config-txt\/memory.md\">Memory options in config.txt<\/a><\/p>\n<h4><code>force_turbo=1<\/code><\/h4>\n<p>disable dynamic clocking (and force overclocking) with <code>force_turbo=1<\/code><br \/>\n<a href=\"https:\/\/www.raspberrypi.org\/documentation\/configuration\/config-txt\/overclocking.md\">Overclocking options in config.txt<\/a><\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>documentation > configuration > config-txt Memory Licence Keys\/Codecs Video\/Display Audio Camera Boot Ports and Device Tree Overclocking Conditional Filters Miscellaneous = Videocore GPU (VC4) $ ls -la \/boot total 21059 drwxr-xr-x 3 root root 2560 Jan 1 1970 . drwxr-xr-x 21 root root 4096 Nov 29 02:37 .. -rwxr-xr-x 1 root root 15830 Oct 30 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7233","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7233"}],"version-history":[{"count":3,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7233\/revisions"}],"predecessor-version":[{"id":7435,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7233\/revisions\/7435"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}