Mali kernel driver TX011-SW-99002-r5p1-00rel0 for firefly

koryherzinger

Hello all... I'm hoping someone can help me out.

I have built the stock kernel (https://bitbucket.org/T-Firefly/firefly-rk3288-kernel.git) and imported the Mali userspace binaries into my rootfs.  I'm trying to launch weston with the fbdev backend, but I get an error:

1. 
   
2. [12:01:21.889] weston 1.4.0
   
3.                http://wayland.freedesktop.org/
   
4.                Bug reports to: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland&component=weston&version=1.4.0
   
5.                Build: 6d359c5-dirty Fixed issue with processing position on touch up. (2014-12-11 16:46:13 -0800)
   
6. [12:01:21.890] OS: Linux, 3.10.0, #1 SMP PREEMPT Mon Jun 8 16:34:54 PDT 2015, armv7l
   
7. [12:01:21.890] Using config file '/etc/xdg-config/default/weston.ini'
   
8. [12:01:21.890] Loading module '/usr/lib/weston/fbdev-backend.so'
   
9. [12:01:21.892] initializing fbdev backend
   
10. [12:01:21.892] Creating fbdev output.
    
11. [12:01:21.892] Opening fbdev frame buffer.
    
12. [12:01:21.892] Calculating pixman format from:
    
13.                 - type: 0 (aux: 0)
    
14.                 - visual: 2
    
15.                 - bpp: 32 (grayscale: 0)
    
16.                 - red: offset: 24, length: 8, MSB: 0
    
17.                 - green: offset: 16, length: 8, MSB: 0
    
18.                 - blue: offset: 8, length: 8, MSB: 0
    
19.                 - transp: offset: 0, length: 8, MSB: 0
    
20. [12:01:21.892] Mapping fbdev frame buffer.
    
21. [12:01:21.892] Failed to mmap frame buffer: Invalid argument
    
22. [12:01:21.892] Mapping frame buffer failed.
    
23. [12:01:21.893] fatal: failed to create compositor
    

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So I thought I'd try to 'dd' some random data into the framebuffer:

1. 
   
2. # dd if=/dev/random of=/dev/fb0 bs=512 count=32
   
3. dd: writing '/dev/fb0': No such device
   
4. 0+1 records in
   
5. 0+0 records out
   
6. 0 bytes (0 B) copied, 0.000217584 s, 0.0 kB/s
   

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The device node exists:

1. 
   
2. # ls -l /dev/fb*
   
3. crw-rw-rw- 1 root video 29, 0 Jan  1 12:00 /dev/fb0
   
4. crw-rw-rw- 1 root video 29, 1 Jan  1 12:00 /dev/fb1
   
5. crw-rw-rw- 1 root video 29, 2 Jan  1 12:00 /dev/fb2
   
6. crw-rw-rw- 1 root video 29, 3 Jan  1 12:00 /dev/fb3
   
7. crw-rw-rw- 1 root video 29, 4 Jan  1 12:00 /dev/fb4
   

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But there seems to be some disconnect in the kernel between this device node and the backing driver.

I've also tried launch X with the fbdev driver, but I get a similar error:

1. 
   
2. [1098091.703] (II) LoadModule: "fbdev"
   
3. [1098091.704] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
   
4. [1098091.705] (II) Module fbdev: vendor="X.Org Foundation"
   
5. [1098091.705]   compiled for 1.14.2, module version = 0.4.4
   
6. [1098091.705]   Module class: X.Org Video Driver
   
7. [1098091.705]   ABI class: X.Org Video Driver, version 14.1
   
8. [1098091.705] (II) FBDEV: driver for framebuffer: fbdev
   
9. [1098091.705] (++) using VT number 7
   
10. [1098091.705] (WW) Falling back to old probe method for fbdev
    
11. [1098091.705] (II) Loading sub module "fbdevhw"
    
12. [1098091.705] (II) LoadModule: "fbdevhw"
    
13. [1098091.705] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
    
14. [1098091.706] (II) Module fbdevhw: vendor="X.Org Foundation"
    
15. [1098091.706]   compiled for 1.14.99.1, module version = 0.0.2
    
16. [1098091.706]   ABI class: X.Org Video Driver, version 14.1
    
17. [1098091.707] (II) FBDEV(0): using default device
    
18. [1098091.707] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
    
19. [1098091.707] (**) FBDEV(0): Depth 24, (--) framebuffer bpp 32
    
20. [1098091.707] (==) FBDEV(0): RGB weight 888
    
21. [1098091.707] (==) FBDEV(0): Default visual is TrueColor
    
22. [1098091.707] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
    
23. [1098091.707] (II) FBDEV(0): hardware: fb0 (video memory: 0kB)
    
24. [1098091.707] (II) FBDEV(0): checking modes against framebuffer device...
    
25. [1098091.707] (II) FBDEV(0):    mode "1280x720" ok
    
26. [1098091.707] (II) FBDEV(0): checking modes against monitor...
    
27. [1098091.707] (--) FBDEV(0): Virtual size is 1280x720 (pitch 1280)
    
28. [1098091.707] (**) FBDEV(0):  Mode "1280x720": 74.2 MHz (scaled from 0.0 MHz), 45.0 kHz, 59.9 Hz
    
29. [1098091.707] (II) FBDEV(0): Modeline "1280x720"x0.0   74.18  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz)
    
30. [1098091.707] (==) FBDEV(0): DPI set to (96, 96)
    
31. [1098091.707] (II) Loading sub module "fb"
    
32. [1098091.707] (II) LoadModule: "fb"
    
33. [1098091.708] (II) Loading /usr/lib/xorg/modules/libfb.so
    
34. [1098091.712] (II) Module fb: vendor="X.Org Foundation"
    
35. [1098091.712]   compiled for 1.14.99.1, module version = 1.0.0
    
36. [1098091.712]   ABI class: X.Org ANSI C Emulation, version 0.4
    
37. [1098091.712] (**) FBDEV(0): using shadow framebuffer
    
38. [1098091.713] (II) Loading sub module "shadow"
    
39. [1098091.713] (II) LoadModule: "shadow"
    
40. [1098091.713] (II) Loading /usr/lib/xorg/modules/libshadow.so
    
41. [1098091.715] (II) Module shadow: vendor="X.Org Foundation"
    
42. [1098091.715]   compiled for 1.14.99.1, module version = 1.1.0
    
43. [1098091.715]   ABI class: X.Org ANSI C Emulation, version 0.4
    
44. [1098091.715] (==) Depth 24 pixmap format is 32 bpp
    
45. [1098091.715] (EE) FBDEV(0): mmap fbmem: Invalid argument
    
46. [1098091.715] (EE) FBDEV(0): mapping of video memory failed
    
47. [1098091.715] (EE)
    
48. Fatal server error:
    
49. [1098091.715] (EE) AddScreen/ScreenInit failed for driver 0
    
50. [1098091.715] (EE)
    
51. [1098091.715] (EE)

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The X log seems to think that the fb0 device has 0kB of video memory.  This might explain why the mmap fails for both weston and X.

Does anyone have any ideas why the stock kernel isn't working for me with the fbdev driver?

Thanks!