Homebrew [Release] Linux for the 3DS

[AweGuy22]

Noob question: Where are the files and scripts located? Are they in an image or something?

 

[TheCyberQuake]

is it possible to run our own .sh files on this?

were you in desktop mode?

Happened in both Weston and CLI

 

[YugamiSekai]

Doesn't this mean we can theoretically make our own OSes on the 3DS in firm format?

 

[TheCyberQuake]

Doesn't this mean we can theoretically make our own OSes on the 3DS in firm format?

We technically could have with a9lh. But from what I've heard brahma payloads have some limitations that make larger projects like that hard. The firm format is a lot easier from what I've heard and had most of those previous restrictions removed. So it may be easier to do a fully custom OS if someone wanted to do it.

 

[nl255]

We technically could have with a9lh. But from what I've heard brahma payloads have some limitations that make larger projects like that hard. The firm format is a lot easier from what I've heard and had most of those previous restrictions removed. So it may be easier to do a fully custom OS if someone wanted to do it.

Though wouldn't it have been possible to get around that by using a brahma/a9lh payload to load a larger second stage loader which then loads the kernel/OS?

 

[TheCyberQuake]

Though wouldn't it have been possible to get around that by using a brahma/a9lh payload to load a larger second stage loader which then loads the kernel/OS?

Maybe, I'm not an expert on the subject. But what you described sounds like a pain to get working compared to what we can do now with b9s

 

[goose121]

How did you fix this?

I don't quite remember, honestly; I think that I was trying to use the old method of a button as a filename prefix, then holding down the button during boot, when I actually had to hold the start button during boot and select the payload

 

[ShadowEO]

Would be nice if it did. Old 3DS has 128 MB; New 3DS has 256 MB.

Wayland would be better on 3DS than X11, though even with Wayland, applications like Firefox would have difficulty fitting into 256 MB.

Thinking back, where the hell did I get that info from. I think I accidentally pulled that from my ass while typing that post, I remembered searching so I could verify, but I think I got too wrapped up in my post to actually look at what I found. My apologies! ;

 

[TheLukeGuy]

I don't quite remember, honestly; I think that I was trying to use the old method of a button as a filename prefix, then holding down the button during boot, when I actually had to hold the start button during boot and select the payload

Ah, alright.

 

[Pacheko17]

Black screen when starting it from luma with B9S.
Tried using key combo and payload select screen, no luck.

 

[XiaoDii]

After I typed "halt", weston stopped and the screen got stuck. Is it a bug or something?

 

[BGC592]

After I typed "halt", weston stopped and the screen got stuck. Is it a bug or something?

From what I understand, halt is supposed to shut down a system (hence it's name). Usually if it were on a computer it would also power down the hardware, which doesn't appear to be the case on the 3ds (sorta like on older computer systems where you had to manually power down the hardware). The screen getting stuck would be a side effect of this. Maybe this is a bug or maybe 3ds linux doesn't have the proper permissions to do a hardware power off.

 

[uyjulian]

From what I understand, halt is supposed to shut down a system (hence it's name). Usually if it were on a computer it would also power down the hardware, which doesn't appear to be the case on the 3ds (sorta like on older computer systems where you had to manually power down the hardware). The screen getting stuck would be a side effect of this. Maybe this is a bug or maybe 3ds linux doesn't have the proper permissions to do a hardware power off.

Edit: MCU-poweroff support is implemented in arm9linuxfw, but it just looks at a button combination and decides if it is going to power off.
https://github.com/xerpi/arm9linuxfw/blob/7506e8143d2dd8f784ea158cac94c1562d3c3338/source/main.c#L17
The proper way to do a power-off would be to send the power button command to the linux side, and linux can decide to send a power off command to the arm9 (with the power button command or shutdown -h now), which then forwards it to the MCU. I'm not sure if MCU is accessible from arm11.
Power button detection:

i2cReadRegister(I2C_DEV_MCU, 0x10) == 0x01;

Original post:
I don't think MCU support is implemented, so halt just halts the system.

It looks like GodMode9 has code for doing a MCU-poweroff and handling the power button, however.

https://github.com/d0k3/GodMode9/blob/d0c4e11badf9aec4d8c2219076c863debcfe0083/source/main.c

Relavant:
Reboot:

i2cWriteRegister(I2C_DEV_MCU, 0x20, 1 << 2);

Power off:

i2cWriteRegister(I2C_DEV_MCU, 0x20, 1 << 0);

 

[superl2]

The latest commit, which adds a touch keyboard, causes an error at compilation. "nintendo3ds_bottom_lcd_draw_text" is being called with an extra argument. I looked at the source, and there were five arguments in the function, but 6 were called.

drivers/input/misc/nintendo3ds_codec_hid.c:137:5: error: too many arguments to function 'nintendo3ds_bottom_lcd_draw_text'
nintendo3ds_bottom_lcd_draw_text(vkb->font, vkb->x_offsets[row][col], row * vkb->font->height * 2, color, COLOR_BLACK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/input/misc/nintendo3ds_codec_hid.c:19:0:
arch/arm/mach-nintendo3ds/include/mach/bottom_lcd.h:38:5: note: declared here
int nintendo3ds_bottom_lcd_draw_text(const struct font_desc *font, int x, int y, unsigned int color, const char *text);

Also, not sure why, but my new 3ds xl crashes when running /sdmount.sh.

Another side note: How hard is it to port android over?

 

[xerpi]

The latest commit, which adds a touch keyboard, causes an error at compilation. "nintendo3ds_bottom_lcd_draw_text" is being called with an extra argument. I looked at the source, and there were five arguments in the function, but 6 were called.

drivers/input/misc/nintendo3ds_codec_hid.c:137:5: error: too many arguments to function 'nintendo3ds_bottom_lcd_draw_text'
nintendo3ds_bottom_lcd_draw_text(vkb->font, vkb->x_offsets[row][col], row * vkb->font->height * 2, color, COLOR_BLACK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/input/misc/nintendo3ds_codec_hid.c:19:0:
arch/arm/mach-nintendo3ds/include/mach/bottom_lcd.h:38:5: note: declared here
int nintendo3ds_bottom_lcd_draw_text(const struct font_desc *font, int x, int y, unsigned int color, const char *text);

Also, not sure why, but my new 3ds xl crashes when running /sdmount.sh.

Another side note: How hard is it to port android over?

I've just fixed the compilation error, there were some changes from paulguy missing.
About sdmount.sh crashing, yeah I'm aware, I'll try to fix it but I'm busy these days so that will have to wait.

EDIT: I've ported all the 3ds changes into a single patch to Linux upstream.

 

[Dysproh]

You for got step 4.5, which was "???".

 

[YugamiSekai]

No Windows build instructions?

 

[uyjulian]

No Windows build instructions?

use a virtual machine or digitalocean

 

[YugamiSekai]

use a virtual machine or digitalocean

My laptop is not fast enough

 

[xerpi]

My laptop is not fast enough

If your laptop has something better than a core 2 duo, then it's fast enough (hw virtualization instructions).