NixOS on ARM: Difference between revisions

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~~Additionally,~~ emulation is supported ~~via QEMU's vexpress-a9 target~~.

QEMU emulation is not supported as of right now.

=== Installation ===

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The ARMv6 image boots out-of-the-box! Note that Raspberry Pi 2 is not yet supported by these images, but in the future the ARMv7 image will work.

~~=== Versatile Express (Cortex-A9) in QEMU ===~~

~~First, convert the downloaded sd-image-armv7l-linux.img to a new qcow2 formatted disk image (for example, arm-vm.qcow2) and resize it to the desired size (for example, 2.5G):~~

~~<syntaxhighlight lang="bash">qemu-img convert -O qcow2 sd-image-armv7l-linux.img arm-vm.qcow2~~

~~qemu-img resize arm-vm.qcow2 2.5G</syntaxhighlight>~~

~~Then, to boot the VM, download U-Boot for the Versatile board (uboot-vexpress_ca9x4_defconfig-2015.07_u-boot) and run:~~

~~<syntaxhighlight lang="bash">qemu-system-arm -kernel uboot-vexpress_ca9x4_defconfig-2015.07_u-boot -M vexpress-a9 -serial stdio -sd arm-vm.qcow2 -m 512</syntaxhighlight>~~

The amount of memory (-m 512) should be at least 512 megabytes, or you will get all sorts of funny behaviour if/when U-Boot tries to access nonexistent RAM. Unfortunately, the maximum amount of memory is limited to 1024 megabytes.

== NixOS installation & configuration ==

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HDMI displays work, but sadly USB keyboards don't. A 3.3v serial port is via the 26-pin connector works.

~~=== Versatile Express (Cortex-A9) in QEMU ===~~

~~The emulated serial port (connected to QEMU's stdin/stdout) works.~~

== Porting NixOS to new boards ==

@@ Line 45: / Line 45: @@
 |}
-Additionally, emulation is supported via QEMU's vexpress-a9 target.
+QEMU emulation is not supported as of right now.
 === Installation ===
@@ Line 72: / Line 72: @@
 The ARMv6 image boots out-of-the-box! Note that Raspberry Pi 2 is not yet supported by these images, but in the future the ARMv7 image will work.
-=== Versatile Express (Cortex-A9) in QEMU ===
-First, convert the downloaded sd-image-armv7l-linux.img to a new qcow2 formatted disk image (for example, arm-vm.qcow2) and resize it to the desired size (for example, 2.5G):
-<syntaxhighlight lang="bash">qemu-img convert -O qcow2 sd-image-armv7l-linux.img arm-vm.qcow2
-qemu-img resize arm-vm.qcow2 2.5G</syntaxhighlight>
-Then, to boot the VM, download U-Boot for the Versatile board (uboot-vexpress_ca9x4_defconfig-2015.07_u-boot) and run:
-<syntaxhighlight lang="bash">qemu-system-arm -kernel uboot-vexpress_ca9x4_defconfig-2015.07_u-boot -M vexpress-a9 -serial stdio -sd arm-vm.qcow2 -m 512</syntaxhighlight>
-The amount of memory (-m 512) should be at least 512 megabytes, or you will get all sorts of funny behaviour if/when U-Boot tries to access nonexistent RAM. Unfortunately, the maximum amount of memory is limited to 1024 megabytes.
 == NixOS installation & configuration ==
@@ Line 146: / Line 135: @@
 HDMI displays work, but sadly USB keyboards don't. A 3.3v serial port is via the 26-pin connector works.
-=== Versatile Express (Cortex-A9) in QEMU ===
-The emulated serial port (connected to QEMU's stdin/stdout) works.
 == Porting NixOS to new boards ==